Precast wall panel structure waterproof construction technology

1 scope

This technology is applicable to prefabricated cavity structure construction technology of waterproof wall panel.

2 construction preparation

2.1 materials and equipment:

2.1.1 General spontaneous styrofoam (polystyrene Board for short), thick 15~20mm.

2.1.2 PVC soft plastic sheet, the thickness of 1.5~2mm.

2.1.3-PVC soft plastic pipe, 20mm.

2.1.4 building asphalt, or 30th, 30th, five oils or use an ordinary pitch, or 65th, 75th.

2.1.5 cooling oil, or 3%-methyl-sodium (silicone).

2.1.6 polyethylene acid formaldehyde (107 glue).

2.1.7 No. 350, asphalt paper linoleum.

2.1.8 PVAc (emulsion).

2.1.9 cement: No. 325 of ordinary Portland cement and slag Portland cement.

2.1.10 sand: clay is less than 3%.

2.1.11 waterproof grease. (Clay): building gel, PVC cement, two-component polyurethane sealing cement, chlorosulfonated polyethylene sealant, etc. According to the design requirements.

2.1.12 waterproof coating: Chloroprene LaTeX asphalt coating, PVC coating, polyurethane coating, according to the design.

2.1.13 fish oil or light oil.

Note: the above material must comply with the design requirements for quality and performance.

2.1.14 main tools: hand saws, cutters, scissors, rulers, scrapers, wire cutters, caught in the electric stove, boiling tar buckets, water tube, rubber tube.

2.2 operating conditions:

2.2.1 cutting insulation: polystyrene with a resistance wire cutters cut into strips, wide depending on the design drawings of the exterior wall construction, width, and length longer than the cavity waterproof wall panel slots 50mm. Polystyrene Board long enough, kraft paper, coated polystyrene LaTeX long available.

2.2.2 cutting linoleum: linoleum cut with a saw, long width the same as polystyrene.

2.2.3 asphalt felt waterproof thermal insulation: the asphalt with a furnace or water boil (boiling temperature should not be too high in order not burn polystyrene), linoleum and polystyrene with hot asphalt cement pressure.

2.2.4 cut plastic: PVC panels cut into strips. Length and width must be adapted to and crack width, its width set width and 25mm, height of high layer 100~150mm, for closing the cavity and catchy, cut a circular-arc notch at the lower end, to arrange for water holes.

2.2.5 plastic pipes: polyethylene plastic pipe cut into 60mm pieces, one end cut point reserve, as shown in Figure 4-43.

Figure 4-43

2.2.6 checking sizes and shapes of waterproof wall panel construction is complete, if there is damage, congestion, voids and defects, should be carefully repaired.

2.2.7 vertical slot and cavity wall panel brushed waterproof coating. With cold methyl-sodium silicate solution in oil or 3% the end of paint coats.

2.2.8 when above the first floor for the reinforced concrete in the basement when the prefabricated wall panels, first floor drawings should be now-long monolithic concrete water outside weathering. Should be reserved in the Foundation or basement beams reinforcing, with vertical bars, water the beans after the formwork concrete, concrete strength up to 5MPa, installed the first layer of wall panels, as shown in Figure 4-44.

Figure 4-44

3 operational processes

3.1 process:

Vertical seam sewing waterproof waterproof → do → do cross-seam waterproof waterproof → → other parts tricking water test

3.2 State joint waterproofing:

3.2.1 insert asphalt felt waterproof insulation: once when the siding is installed in place, steel welding keyway immediately, exterior-wall nodes (column) before the reinforcement, asphalt felt waterproof thermal insulation block inserted in the end, around tight, no bulge cracking or segmented plug. Width of a asphalt felt waterproof insulation should be appropriate to prevent when poured wall concrete. Plug the cavities. Vertical wall panel as shown in Figure 4-45.

Figure 4-45

(A) longitudinal walls; (b) gable

3.2.2 inserting plastic: according to the actual width used for inserting the proper size waterproof to prevent too broad, too narrow, tank stripping, crimping slippage, if such phenomena should be replaced immediately. Water transfer to waterproof upper with document closely and lower into the water on the slopes to an enclosed cavity waterproofing to prevent debris falling into the cavity. Construction waterproofing must be synchronized with layers from the top down when inserted into the cavity, no plug from behind the outer wall face. Before inserting waterproof, to check the State after seam cavity of asphalt felt waterproof insulation for damage should be repaired; will be spilled mortar pouring columns clean stones and other debris, such as vertical seam is too narrow when unable to clean, this gap can no longer do construction waterproofing, should be treated with waterproof grease embedded solid fill into the waterproof material. Plastic article itself is flexible, easy to bend inserting and as bottom of the jointing mortar, so when the mortar joint, force should not be too large, to prevent the water off trough caused the cavity plug.

3.3 do sewing waterproof:

3.3.1 sewing effect depends mainly on siding installation. Therefore, wall panels in place to reach the upper and lower vertical flat pad height is appropriate. Is water, water protection, ensure flat cavity full, straight and smooth. Cavity into linoleum volume, cement mortar on the outside. Linoleum rolls as bottom of the jointing mortar, when the joint force should be uniform, and should not be too large, to prevent the linoleum go into plug cavity. Sewing waterproofing as shown in Figure 4-46.

3.3.2 when pishui with water to touch or with leakage when the plug cannot be picked off, all such joints should be filled with waterproof ointment or plaster, cement mortar outside. When sewing too wide or water damage, was wrong in the water to large, first in the joints "6" or "8"-shaped linoleum rolls, outside the cement mortar. As shown in Figure 4-47.

3.4 cross-seam waterproof: Gou Li joints, horizontal joints before the mortar insert the semi-circular plastic drainage pipe cross stitch, to stick wall 15mm, and tilted down. Construction should be checked before the upper end of the vertical seam of plastics come into contact with water tight, height and volume is appropriate, as there are gaps must be sealed with grease. Should be at the top of the lower plastic plug on the back side of the retaining wall, sealing upper, upper plastic bottom insert to lower on the weathering of exterior wall panels. Cross joints waterproofing as in Figure 4-48.

3.5 other waterproof material:

3.5.1 balcony (including anti-slot balcony, and flat balcony) waterproof: balcony of Shang, and Xia side state sewing must with ointment embedded sewing, outside hook mortar protection, Xia sewing embedded ointment of length ends the many Yu 30cm, Shang sewing as met blind sewing Shi, to out 20mmx20mm gap, cleanup clean, brushing cold Foundation oil Hou, again embedded ointment, side state sewing and upper wall Board empty cavity State sewing handover at should pass long embedded ointment, do drainage slope, left drain. Seam between two adjacent balcony plates are pointing up and down, separated by gel workmanship in compact. Balcony waterproofing is shown in Figure 4-49.

Figure 4-46

3.5.2 waterproof rain cover, awning waterproofing references balcony.

3.5.3 wall waterproofing: used when constructing a waterproof, and sewing and the sewing practices the same wall panel, vertical joints should be embedded in a waterproof grease on the inside. When waterproof material is used, you must enable sewing, outside seam, sew, Neili seam seal, vertical seam embedded grease and tar the roof lap. Bean stone parapet at the top do concrete top and flashing (flashing).

3.5.4 wall tube hole must grease workmanship according to design requirements. In the flat, vertical joints in case of through-wall pipe hole, must the entire block filled grease. At the time of construction, hang shelves on the wall outside the cave, waterproof mortar should be used plug, located 2cm impaction waterproof mortar, mortar screed outside.

3.6 after the exterior caulking, paint two waterproof coating, thickness should be not less than 1.5mm to prevent water seepage because of shrinkage crack of mortar.

3.7 grease joint construction should pay attention to the following points:

3.7.1 joint parts of the base surface must be smooth, solid and dry and clean up the joint contact surfaces of dust, debris, then brush the cold oil, ointment: petrol =3:7 prepared with cold oil, dried caulking processing.

3.7.2 when filleting ready-made rub ointment into strips into joints within the diameter of 20mm, then the valve compact, or within the crowded block in the gap with caulking gun; as low temperature grease hard, softened ointments can be properly heated (baking temperature: 60 ℃ below), fill in the seam with a scraper in the compaction.

Paragraph 3.7.3 joint grease must be considered compact, which bond without breaking. Phenomena such as peeling, open, pendulous; ointment after the block, surface brushing cold oil, grease seam painted on both sides, then the valve flat and compact. To prevent sticking, when in the hands, wipe a small amount of fish oil on the valve or light oil, no oil to avoid bonding fragile joints caused seepage.

3.8 tricking water test: tricking water test is a waterproof wall panel the last operation, cavity proof after all, did not engage in external decoration must be carefully tricking water test, testing the waters and make records.

4 quality criteria

4.1 project:

4.1.1 for waterproof quality and technical properties of various materials, you must meet the requirements of specification for design and construction; must have manual and quality certification. And a "certificate", prior to the second interview.

4.1.2 wall plates, wall plate waterproof structure must be complete, type, size and shape must comply with the design requirements and the relevant provisions, members should also have the factory certificate.

4.1.3 walls, balconies, rain cover, wall boards after installation, its elevation, Board width, pulp thickness should comply with the design requirements and provisions of the code.

4.1.4 ointment caulking must be tight, bond, no cracks, seams on both sides of cover width exceeds the not less than 20mm.

4.1.5 waterproofing coating must be flat and evenly, without falling off, peeling, cracking, blistering and other defects.

4.2 Basic project:

4.2.1, balcony plates, wall plate cover plate, wall Board Joint waterproofing construction completed, vertical sewing, sewing, cross stitch tricking water test to check.

4.2.2 issues tricking water test, to identify the cause of leakage and repaired in a timely manner, and continued to do after tricking water test until no more when a leakage occurs, may be carried out outside finish construction.

Location and repair the leakage point 4.2.3 should be carefully recorded, indicating the location, as the technical information included in the technical file for future reference.

4.2.4 joint grease surface density, cold oil should be uniform, protective layer of caulking bond, cover tightly.

5 finished product protection

5.1 when padded waterproof caulk and paint coatings, no pollution, such as walls, Windows and doors.

5.2 when repairing leaks, should pay attention to protection of walls, balconies, rain cover place the decorative surface layer.

6 quality problems to be noticed

6.1 outside wall Board installation deviation big: Board end of pad gray too much, will makes was water super high, caused flat cavity exposure; Board end of pad gray too less, caused Xia sewing Yu touch, no empty cavity drainage: Board end of pad gray uneven, produced flat cavity end water drainage not Chang, and will caused State sewing Shang BU width ranging, insulation article, and waterproof article construction difficult; lifting outside wall Board Shi, upper and lower two block is not a level surface Shang, pishui and the block water Taiwan dry touch, caused capillary sucking water into indoor; Board itself geometry size not specifications, has errors, also will produced above phenomenon. Therefore, the installation quality of waterproofing and exterior wall cavity are closely related.

6.2 water leakage:

6.2.1 plastic tube off, curled, skew, too soft, back seam to form vertical seam cavity, resulting in leakage of water.

6.2.2 top and water without the plastic seal, not on the plate at the lower end of the drainage slopes made sewing, sewing the leakage of ash and other debris does not clean wall plate defects did not fix or repair improperly, resulting in leakage.

6.2.3 standing seam, flat seam jointing force too much would set a joint plastic deformation or extrusion with waterproof and thermal insulation paste, so retaining wall drainage; or cavity fill linoleum rolls squeezing leaned back against the label of water plugging cavities, resulting in leakage.

6.2.4 balcony, rain cover, parts of the wall materials such as waterproof, does not meet the requirements of construction quality, resulting in water leakage.

7 quality records

This standard should share the following records:

7.1 component factory certificate.

7.2 waterproof material factory certificate, instruction manual, sample inspection report, the permit card and without security.

7.3 wall panels tricking water test records.

7.4 covert inspection records.

Because of the war, many people become homeless. I can't do it well. Please help me.my PayPal is xhhnet@163.com.

Installation technology of precast wall panels

Precast wall panel installation

1 scope

This technology is applicable within the outer foam prefabricated wall panel installation process.

2 construction preparation

2.1 materials and equipment:

2.1.1 wall panels: enter after checking the model, size and appearance, the design requirements. Waterproof horizontal Chamber, vertical cavity structure intact. Members should have a factory certificate.

2.1.2 the joint waterproofing and insulation materials: plastic (thick 1.5~2mm), felt, polystyrene.

2.1.3 other materials: cement, sand, welding electrodes, steel bar, steel plate, 107 rubber, waterproof coating and caulk.

2.1.4 main tools: wire rope clamp, clasp, crowbars, plate blocks, temporary fixation clamps and wire, and so on.

2.2 operating conditions:

2.2.1 familiar with design drawings, master siding type, location, size, elevation and construction practices, and so on.

2.2.2 checking anyway, waterproof wall panel cavity should be intact, if any damage should be repaired, repaired base should be clean, with about 107 adhesive cement mortar (cement 15%) patch.

2.2.3 anchorage reinforcement of wall panels on either side of the cut out ring, adjust straight, pick your cut should not damage the concrete near the ring, and vertical cavity coating waterproofing coating for waterproofing.

2.2.4 check the installation location wall panel lines and elevations, finish shall be checked.

2.2.5 installing the wall formwork and platform card shelf.

2.2.6 checking first floor reinforced concrete retaining water and reserved location.

3 operational processes

3.1 process:

Screed → wall panels in place temporary fixed wall panel → → insert linoleum and polystyrene, plastic →

Inserting reinforcement → Groove welded joints, pouring the concrete → bottom twisting hydraulic cement mortar for exterior wall →

Remove the external wall temporary support

3.2 touch screed: by pressing the elevation of good mortar screed, which reached a certain strength, wall panels in place before pouring plain cement slurry to make strict combination, elevation accuracy. If screed, you should start leveling with a little way, to adjust wall panel in place, dry wall panel below the slot twist plug hydraulic cement mortar, but twist compact.

3.3 wall panels in place: wall panels before lifting, check rings, clasp pins tight, lifted to the installation location, to find a vertical position, then slowly falling in place. Exterior wall panels in place, wall outside the sideline, outside walls straight, perpendicular to the walls, cracks, tongue and Groove joints may not be misplaced, prevent Yan Ping cavity. Elevations must be accurate to prevent the shed above the water table. Is strictly prohibited in the water, parts of the water move the wall panels, and protection during the entire installation process wall panel edges and waterproof structure. Drop is wanting wall panel installation should be positioned, on line and on foot. When you install the first layer of wall panels, should pay particular attention to quality, making it a benchmark of the floors above.

3.4 temporary fixed wall panel: wall panels in place, with TURNBUCKLE or temporary fixing clamps to siding grapple with the large template. Corner two wall panels adjacent to the gable Board should fix with each other, grappling the rear hook. Each vertical applying Theodolites to check it again.

3.5 is linoleum, benzene planks, plastic: linoleum and polystyrene articles first pre glued together into waterproof cavity should be inserted in the end, around tight, not bulge or fracture. Concrete should be checked before the impaction is intact, insert plastic article, practices should comply with the design requirements of the upper and lower ends, strip width should be appropriate.

3.6 inserting node structure reinforcement: side wall panel out of the steel ring coincides with the horizontal wall reinforcement rings, the vertical reinforcement is inserted into overlapping rings of steel bars. Each piece of wall panels and at the junction of the wall should be at least insert 3 rings and solid banding (acceptance should be hidden).

3.7 keyway welded steel reinforced concrete: when cast in the wall with flat modular construction, exterior wall panels in place, keyways should be installed with welded dowels; such as the use of drum formwork construction, welding immediately after the removal. Seam thickness and length according to the design requirements, while the design when there is no weld thickness 6mm, length of 90mm. Upper and lower reinforcement when the dislocation should straighten out the lap weld again, rebar lap length is not sufficient, plus added help steel or steel plate thickness of 8mm welding. Steel single weld length is not enough to both sides. Check the welding quality, handle hidden procedures, before pouring the concrete. Before lifting a layer of wall panels should be finished pouring concrete keyway, keyway must be vibration compacting.

3.8 outer wall panel bottom twisting hydraulic cement mortar: keyways steel welding, should clean up the bottom of the siding, water moist, lateral with linoleum block, prevent clogging of the cavity, and then twisted stiff mortar and compact twist plug.

3.9 remove temporary support wall panel: wall panel exterior wall corners, must be wall-column concrete strength is above 4MPa, removable temporary fixed facilities.

4 quality criteria

4.1 project:

4.1.1 lifting strength of concrete it is necessary to meet the requirements of specification for design and construction.

4.1.2 anchorage reinforcement component type, location, node must meet the design requirements, and no deformation damage occurred.

4.1.3 concrete joints keyway must be accurate measurement, concrete compacting, careful conservation, which must meet the design requirements or provisions of the code.

4.1.4 waterproof wall panel structures must meet the design requirements.

4.2 basic item: keyways splices in the joints, seams, should comply with the design requirements and the provisions of the code. Weld length to meet the requirements and smooth surface, no dents, welding tumor, crack, blowhole, slag and the undercut.

4.3 allowable deviation, as shown in table 4-40.

Table 4-40

Project tolerance (mm) method

1 axis displacement offset 5-foot check

Storey ± 10

Full height ± 10

Wall plate 5 2m supporting plate check

Full-height 1/1000 full height vertical 3 and not more than 20 with a theodolite or wait for check

Gables on each caster 2 with 2m supporting plate check

Height difference ± 5 using a ruler and a wedge-shaped feeler Gage check

Vertical-5 2m supporting plate check

5 finished product protection

5.1 after entering wall panel, should be placed in the plug.

5.2 transport, during the lifting operation, avoid damage the waterproof wall panel structures, such as a shed, retaining water, cavities and other damage should be repaired before use.

5.3 wall panels in place as accurately as possible, and protect good mortar screed. When installing to prevent pulling hard to pry.

5.4 when the siding is installed, no collision has been installed floor.

6 quality problems to be noticed

6.1 exterior wall waterproofing construction damage: before lifting should check for damaged parts should be trimmed in a timely manner, install skid for the avoiding while leveraging the easily damaged parts.

Wall Panel seams should be even, and uneven affects cavity waterproof.

6.2 wrong upper and lower wall plate: wall panels in place, certain lines in place, mainly outside edges to ensure exterior smooth wall panel.

6.3-bus bars do not meet requirements: If the wallboard walls within steel rings and rings does not match, vertical reinforcement insert rings less than three groups. Therefore, steel operations shall be responsible to ensure joint compliance.

6.4 keyways are not timely: wall panel after installation, should be immediately welding and pouring concrete.

7 quality records

This process shall meet the following quality records:

7.1 wall panel factory certificate.

7.2 welding certificate.

7.3 cement factory certificate and retest report.

7.4 test reports for sand and stone.

7.5 concrete testing reports.

7.6 hoisting records, inspection records.

7.7 component quality inspection and assessment of installation project information.

Because of the war, many people become homeless. I can't do it well. Please help me.my PayPal is xhhnet@163.com.

Installation technology of precast reinforced concrete frame structure

Precast reinforced concrete frame structure components are installed

1 scope

This technology is applicable to general industry and civil construction of multistory frame of precast beams, columns, slabs of concrete components are installed.

2 construction preparation

2.1 materials and equipment:

2.1.1 widget: precast reinforced concrete elements, such as beams, columns, slabs, is given a factory certificate. Component specifications, models, embedded parts location and quantity, appearance and so on, should comply with the design requirements and the standard for quality inspection and assessment of prefabricated concrete member (GBJ321-90) of the.

2.1.2 steel bar and steel: size, shape, the drawing requirements and should be steel factory certificate.

2.1.3 cement: No. 425, should be adopted, No. 525 ordinary Portland cement. Seams in the column should be used, No. 525 expansive cement, or at least No. 525 ordinary Portland cement. Should not be adopting slag cement or Pozzolanic cement.

2.1.4 stone: size 5~32mm. , Sediment is less than 2%.

2.1.5 sand: sand or coarse sand, clay is less than 5%.

2.1.6 electrode must be according to the design requirements and welding is the process of selection of the relevant provisions. Packaging order, no rust no tides, certificates and instructions for use.

2.1.7 template: according to structural requirements and specifications needed to prepare complete, brush release agents. 100mmx100mm,100mmx50mm wood as well. 50mm plank.

2.1.8 main machinery: lifting machinery, welding machines and related equipment, welding rod drying boxes, wire ropes, rings, baskets of correctors, post lock clamps, slip line, supports, hooks, theodolite, level, leveling rod, foot boards, iron pole, Jack, chains and crowbars. Tools and so on.

2.2 operating conditions:

2.2.1 familiar drawings: drawings, especially structure diagrams, component fabrication, joint construction detail drawing, related to the Atlas should thoroughly understand and be familiar with. Carefully grasp the component model, quantity, weight, joint practice, construction operations, safety technologies, Spider-man-related provisions and the interaction between components.

2.2.2 preparation method: according to the structural characteristics of the building and construction process, based on the actual conditions, the fabric carefully lifting plan. Safety, quality and construction personnel, technology gives the low-down.

2.2.3 main components for pre-screening: based on the structure construction drawing and component processing, verification entry type, quantity, specification of components, concrete strength, embedded reinforcing iron, reserved position, number of conformance to design drawings, whether the component factory certificate.

2.2.4 line: the embedded parts and exposed on the reinforcement of cement paste and clean of rust and other debris management. On the members to play axis (centerline) is to say, the positioning line, indicate directions, axes and elevations. Axis of the columns should be playing on three sides. Axis post, first floor in addition to playing out, and mark 0.00mm horizontal lines on three sides. Embedded cross centre line of play. Play at both ends of the beam axis, axis control of positioning.

2.2.5 control floor installation elevation: the component connection anchoring the structure after construction, good floor column grid axial and elevation control lines, good post connection of superimposed layers, embedded positioning and leveling plates and calibrate their elevation. Floor column grid axis as clear and accurate.

2.2.6 adjust upper part of composite beams with exposed steel bars, welded at the ends of the main bars straighten buried along, check the connecting parts according to design requirements, length, location main bar. In the case does not affect the normal installation, upper part of the basket of flowers Leung of beam main bars fastened, head positioning embedded parts can also be welded composite beams of steel, but must ensure that their elevation, location accuracy.

2.2.7 in accordance with selected construction organization design of hoisting machinery comes into play, and the commissioning of identification in accordance with safety procedures ready for lifting appliances, lifting shall be put into operation.

2.2.8 erection of scaffolding, safety protection: in accordance with the provisions of the construction organization design in the lifting job putting up lifting scaffolding and platforms, and security guards. And associated personnel inspection, inspection, certification, compliance with safety regulations, to be fully operational. No security and safety measures, shall not carry out the job.

2.2.9 the floors need of beams and columns, Board member of plane position close to flat. To prevent post flip when lifting, little stigma lifting touchdown crack or bend reinforcement, security leg can be used, or the addition of wood column end reinforcement to prevent bending deformation of main bars for lifting.

2.2.10 welder certificate and designation, official before brazing welding trials will be required to adjust the welding parameters, providing simulated weld and qualified through test and operation.

3 operational processes

3.1 process:

Column lifting (correction, positioning → welding) → girder lifting (correction, reinforcement welding) → beam-column joint core →

Shear wall construction → installed

3.2 pillars lifting:

3.2.1 structure hoisting hoisting in the order provided, generally along the longitudinal axis push, segmented flow layer by layer, each floor from end to started to reduce repetitive task when a transverse axis of the column after the installation is complete, and then hung the next post on the horizontal axis.

3.2.2 clean up post mounting area of debris, loose concrete and high position of embedded steel plates bonded clean, check the columns axis, position location, elevation, and anchorage and meet the design requirements.

3.2.3 hanging main bar up and down to check out the posts, according to the designed length will exceed the part cut off, ensure that the positioning of small pillars head steadily and is located in the joint position on the plate. Will lower out of the main bars straighten, smooth, and pledge to lower pillars reinforced overlap Nestled close, easy to weld.

3.2.4 pillars lifting: pillars hanging points location and hanging points number by pillars length, and section shape decided, General selection are buckle lashing, hanging points selected in from column top 600mm at card good special of column Hoop, in column hoop below lock good clasp wire rope, lifting mechanical of hook rope and clasp phase hook district with clasp card live, hanging rope should in hanging points of are above. Slow lifting, tense pause after lifting rope up, check the reliability of automatic clasp in a timely manner to prevent tripping on their own, to control the lift in place without swinging back and forth, in the lower part of the column hung well slip rope, check all connections, right before the lift.

3.2.5 pillars in place: when post lifted from the 500mm pause, remove the protective pillar reinforcement of wood and leg, clear the stigma in mud, and then by the signalman command, column lifted onto a floor in place. In place, slowly over the landing to the installation location, stop, check the post number, adjust the direction, controlled by the two make small stigma full range line is correct, before falling on to the installation location. Post check-check the shear wall inserted iron (steel), completion of directional seat, sided with hanging flower baskets bolted, oblique cord, additional temporary support fixed to ensure safety.

3.2.6 correction and positioning:

3.2.6.1 column vertical correction: hanging plates, and set up in the two mutually perpendicular directions Theodolites, vertical axis aligned with the installation location grid on the column axis, vertically. Corrects the time to find a two axis axis of the surface, then align on the third axis of the last pillar axis alignment in the middle or on the three axes. Pillars were in place well, careful theodolite calibration axis and vertical, confirm that does not exceed the deviations, stigmas positioning plate welding can be carried out.

3.2.6.2 column (pillar) installation calibration and orientation: the column centerline shall prevail, in place after four supports. Using two Theodolites are adjacent on the cylinder axis, at the pillar axis, vertical deviation correction. Observe the correct column axis, full height from bottom to top through. When two Theodolites calibration from two directions after a good, then check the other two axis of the plane, surrounded by supporting strong, small pillar steel plate and welded steel plate fixed on the head, and then welded reinforcement, the second correction.

3.2.6.3 side columns, corner post installation, calibration and location: edge, corner post installation wood only on the 2~3 from the floor taut basket correction correction. Except when installing the corner post after correction for three-axis positioning, and check on the fourth axis on the surface, ensure that the upper and lower pillar does not produce twisted, dislocation and migration at the nodes.

3.2.7 indispensable prior to positioning the main bar and the stigma, spot-fix to prevent support in prison, tighten TURNBUCKLE tie in with each other without coordination, resulting in posts to tip over.

3.2.8 adjust main bars, welding: during the lifting process is reinforced by collision in welded reinforcement before straightening and smoothing, so upper and lower reinforcement is correctly positioned, close to each other, easy to weld. When used for welding, steel bars should be used has the same gluten level when using lap welding, should meet the requirements of lap length, consists of two double-sided welds. Two welding machines for welding required, diagonal, symmetric, and so speed up the arc, ARC basic synchronization. The intermittent welding, to prevent thermal effects lead to uneven stress, excessive deformation are generated to avoid burns and reinforcement of concrete. Positioning small stigmas surrounding welding of steel plates on all sides. Welding post. Quality meets the specification for welding requirements, complete construction record, indicating the welder code. Pillar reinforcement after finishing welding, weld cooling in order to withdraw support. Review correction: theodolite review the verticality of column and line, controlled within tolerance range, found ultra deviations available chain for correction, may not be hit with a sledgehammer, pry hard, hard to pry, damaged main bar.

3.3 girder lifting:

3.3.1 the sling in place: in the programme provides for the construction of the installation order the relevant type, specifications of the beams supporting code, playing well at both ends of the axis (or the middle), straightening and straightening out the ends out of the bar. Hanging out in the Bay of pillars, beams for the crane main beam and then hung the first time, between the floors.

3.3.1.1 lift: in accordance with drawing on the provision or construction schemes identified in the hang point location, hook and rope lock. Pay attention to the angle between the slings must not be less than 45 degrees. If using the lifting rings, you must tie safety lines. When using the fallback when lifting, have to CLASP one prison. After hanging the hook-and-line upgrade slowly, tighten the hook-and-line, 500mm stop rise off the ground, carefully check spreader firmly tied hung safe and reliable, to be lifted into place. Lifting AWB or local pick side beams, to give serious consideration to its center of gravity, avoid eccentric to prevent tilting. Lifting point should be as close as possible to the rings or beam end position.

3.3.1.2 in place: check again before lifting the stigma pivot steel pad elevations, location meets the installation requirements, in place looking for good on the stigma of axis positioning and relationship between the beam axis, so that the beam is seated correctly. The pillars at both ends of the beam in prison.

3.3.2 beam correction and reinforcement welding: in place after a solid, elevation, position of the beam to make corrections. Finishing steel and corresponding Liang Tou main bar after you close to each other, for welding. In order to control the displacement of the beam, end of center line of both ends of the beam should be aligned with the top of the pole and line, and if the error is small, crowbars available minor chord so that it sharply when the error is large, don't pry roots hard to pry, or otherwise affect the pillars vertical changes. Beam should be lifted again, slightly off the base steady operation by officers from both ends, Visual alignment axis left hook to a smooth, slow seating and top end of the beam axis alignment axis. Vertical beam deviation correction is a wire pendant hanging from both ends, and standard deviation, and beam floor mats with crowbars, iron pad smooth tight, until the ends of the vertical deviation control within the allowed range, note in the entire calibration process, must also be observed with a theodolite vertical pillars have no change. Installation to make the post as a result of beam the vertical deviation exceeds allowed value must be adjusted. When the beam elevation and position correction right, top firm, weld, weld quality shall conform to the requirements.

3.4 core area of beam-column joints:

3.4.1 the practice of core area of beam and column in line with design drawings and building Atlas of seismic requirements. Prefabricated welded closed Stirrup stirrup, Stirrup spacing throughout the encrypted area, diameter, quantity, 135 ° hook, straight part length shall meet the requirements of specification for design and construction. In composite beam of iron part should be set 1 φ 12 welding on closed position Hoop, used to control the correct position of column main bars and joints.

3.4.2 edge, corner, capped columns node: Liang Hezhu main bar anchorage length and lap welds, design drawings, specifications and code requirements must be met. Top floor Corner column joint beam on the steel removed and rebar lap welding of beams in addition to remaining top reinforced with embedded anchor bar on welding in prison. Top anchorage reinforcement angles welded in prison.

3.4. the 3-node strength than concrete strength class of concrete should be level to 10MPa. Seams with dry concrete column joints (lighter than concrete face stiff bean), preferably by pouring cement, cement at 0.3 and increase its strength than the concrete strength 10MPa. Seams seams clean before using hemp ropes, sacks water fully wet; two-side template block. Both symmetrical side chisel action, with twist-filled reality. Construction finished maintenance 7d, to prevent shrinkage cracks. Prior to the installation of upper structure, columns should be joint construction is completed.

Joints can also be pouring UEA shrinkage-compensating concrete, its strength than concrete strength grade should also improve 10MPa, design of mix proportion and pouring method, with the consent of the Department.

3.5 installation (floor or roof): rigid frame formwork can be used directly or in-place method.

3.5.1 position of line: on the side beams according to the design drawings drawn panels and Panel seam line, indicating the type of plate.

3.5.2 Board in place: clean up the beam or wall epithelial, check level, review the axis. The required hoisting. On board the Setup begins on installation technology of prestressed concrete hollow plate standard.

3.6 shear wall construction: on the floor after installation is complete all the beams, columns, slabs, interspersed within the hollow beams with vertical reinforcement, and insert the horizontal ribs and pillars embedded in iron (steel) welding in prison. Connector locations should comply with the provisions of the code. The construction organization design requires a good template, vibration compacting of concrete poured, and strengthen conservation.

4 quality criteria

4.1 project:

4.1.1 hoisting structure concrete strength, lower internal forces of structures subjected to joint (joint) strength of concrete or mortar must comply with the specification for design and construction requirements. Check the component factory certification and the test of sample cured in same condition report.

4.1.2 component anchoring must comply with the design requirements and no damage. Observed or standard checks and inspection lifting records.

4.1.3 joints (joints) of the concrete (mortar) must be measured accurately, pouring dense, careful conservation, which must meet the design requirements or provisions of the code. Visual check and 28D sample test report and check construction records.

4.2 Basic project:

4.2.1 beams, columns, slabs in place anchorage: axis position, elevation, pulp and node construction practices, end plug holes, Board-end anchor, Board width, should comply with the design requirements.

4.2.2 joints welding practices should comply with the design requirements and the provisions of the code. Component main bars and plates are connected with the weld length, width, thickness, and shall meet the requirements of specification for design and construction. Weld surfacing, soldering wave uniform, no dents, welding tumor and burns, joint crack and blowhole, slag and the undercut. Clean welding slag, covering and spatter.

4.3 allowable deviation, as shown in table 4-39.

5 finished product protection

5.1 axis to maintain through the floor of the column grid, clear installation node level to indicate that need to be addressed should be clearly marked, and not any apply, change, and pollution.

5.2 installation locating buried parts of the beams and columns to ensure accurate elevation cannot be reached, any move, hit and shift.

Prefabricated frame components installation tolerances and inspection methods table 4-39

Project tolerance (mm) method

1 column centerline axis positioning position offset 5-foot check

2-column interface up and down center line position offset 3 foot check

3 5M in column 5

>5M vertical 4 column column-10 using a theodolite or hanging and foot check

5 >10m column 1 ‰ high and <20

6 5M +0,-5 level or standard of inspection

7 >5m +0,-8

5 foot 8 axis displacement deviation check

9-storey ± 0 level or standard of inspection

10 Board shelving ± 10 feet in length check

Plastering at 5 feet and feeler gauges check

Don't plaster 3

12 center line axis positioning wire 5 foot check

13 +0,-5 surface of the beam elevation level or wait and check

14 vertical deviation of 3 hanging and foot check

15 stairs, offset 10 feet of horizontal displacement check

16 terrace elevation ± 5 with the level, standard checking

5.3 the reinforcement may not be crooked, bent at the nodes, removal of rust and dirty in the process not knocked down. Φ 12 before the pouring of concrete steel welding into closed position hoop fixed-column main reinforcement position. Node encrypted area hoop welded closed, the amount in line with design and seismic provisions of the Atlas, binding firm.

5.4 Installing the beams, columns, plates shall be arbitrarily bracing and tie rod removal, all cooling needs to be welded reinforcement rear detachable calibration facilities. When installing a beam, shall at all times observe the verticality of column changes, offset should be stopped or remedied.

5.5 members while in transport and stacking, wood mat location shall conform to the provisions, generally close to the rings, the pad thickness should be above the ring, and wood into a straight line up and down. Preventing cushion unreasonable, cause damage to the components. Piling yard should be smooth, solid, not water. 100mmx100mm timber at the bottom or double feet smooth hand pad. Each duo construction organization design provides a high degree of code should be neatly stacked.

5.6 when the pipeline is installed, shall be arbitrarily picking cut component. Construction shall be arbitrarily cut rebar or bend to bend in damaged products.

6 quality problems to be noticed

Defects 6.1 component: the component model, specification error. Component factory has yet to achieve the required strength, causing breakage or damage. During transport and installation, check the component quality, the strength of concrete. Using the correct methods of handling and transport. Damaged or defective component without technical department identification, may be used.

Displacement deviation 6.2 component: component models and parts should be marked before installation, check wire size were installed to prevent setting errors caused by component offset. Different climate change adjustment of measuring error. When serious and responsible, careful correction. Component location, elevation, vertical, met the requirements.

6.3 above and below the axis does not correspond to any affected components are installed: construction on line, top of the line should be from the bottom up, using theodolite vertical, axis of the determination of the correct floor. Guarantee perfect match between the upper and the lower axis.

6.4 node concrete pouring is not compact: node template does not run pulp. Node template should be sewn block before pouring. Denser core reinforcement, pouring should be careful when vibrated. Has a good workability of concrete and genuine slump. Template to leave a clean out, carefully cleaning to avoid inclusions.

6.5 displacement of main bars: reinforcement displacement nodes lower pillars, causing difficulties to lap welding. Because components production without taking measures to control where the main bar; component reinforcement caused deformation in the process of transportation and installation. Therefore measures should be taken when production, guarantees the proper beam main reinforcement position, lifting the collision avoidance, before installing straightened out.

6.6 the core structure does not meet the requirements: because the core steel more, so when should seriously look at the pictures, according to the joint requirements. Steel connection position accurately, lapping each other close, easy to weld. Stirrups quantity shall conform to the drawings.

6.7 floor high: mainly the lifting process of elevation control is lax, drove up installation elevation. Starting from the first floor, measuring actual relative elevation of plinth epithelium, find the right column bottom screed's elevation. When you install the floor pillars, to adjust the locating plate to control the floor elevation above sea level, positioning plate leveling application level, according to the post's actual situation, set by column positioning plate negative deviation. Negative deviation to 3~5mm, available steel plate adjustment.

6.8 column are skewed: the cause is poor welding methods. Improvement is the joint of beam and column with two or more than two welding points, conveying welding method should be used. Hard to pry bars are not allowed in the welding process, welding of reinforcement in the process of using the theodolite to observe a vertical deviation, find the problem corrected.

6.9 pillars displacement: stigma in place only in accordance with small cross line in place, rather than controlled axis on the pillar; reinforcement welding, thermal deformation effects distort, led to post them.

6.10 pillars vertical overload and unbalanced, pillar is not straight: when installing, in the adjacent of two surfaces that are perpendicular to the fall line of correction. After column connection on the steel sheet spot welding, pillars and corrector for the second correction. Main bar with symmetrical, such as speed, intermittent welding. Arrange the welding sequence from Plum point should be applied as a whole to stagger the framework welding method to prevent the welding process, effects of stress, avoid frames have varying degrees of deformation.

6.11 quality does not meet the requirements, should be strictly observed welding procedures.

7 quality records

This standard should have the quality records

7.1 component factory certificate.

7.2-steel factory certificate.

7.3 steel factory certificate and retest report of mechanical performance.

7.4 certificate of welding electrode factory.

7.5 welding operation certificate.

7.6 test report.

7.7 cement factory certificate and retest report.

7.8 test reports for sand and stone.

7.9 structure hoisting records (pre inspection records).

7.10 reports 28D strength of concrete block.

7.11 components install section for quality inspection and assessment records.

Because of the war, many people become homeless. I can't do it well. Please help me.my PayPal is xhhnet@163.com.

Installation technology of prestressed solid whole floor

Prestressed solid whole floor installation

1 scope

This technology is applicable to multi-layer and high-rise brick internal and external structures such as internal model of prestressed solid whole floor installation process.

2 construction preparation

2.1 materials and equipment:

2.1.1 building Board: no cracks, warping, and other defects. Widget factory certificate.

2.1.2 cement: numbered No. 425, Portland cement and ordinary Portland cement and slag Portland cement. The factory certificate. According to the provisions of the second interview.

2.1.3 sand: sand.

2.1.4 main tools: steel Board, crowbar, casing, pipe supports, 100mmx100mm wood and so on.

2.2 operating conditions.

2.2.1 according to the construction plan requires piling yard repair flat solid, first Board below the long wood, each plate pad short mat wood. When building slab width ≤ 3170mm, the wood length 400mm, width 3770mm, wood 500mm. Wood thickness ≥ 50mm, wood placed parallel long sides. As shown in Figure 4-41. Wood to align, pad gasket shall not be void in a corner. Duo piled up, each up to 9 blocks. Stacked on the floor during transportation in the car should also be the same.

Figure 4-41

2.2.2 checking floor whether it is a factory certificate. And then check the appearance quality of slab, who do not meet the quality

Requirements shall be used, such as building plate or raised key cracked or damaged, shall be used.

2.2.3 check wall axis and elevation control lifting figure check large floor models and specifications. Ascertain the hole on the plate with the drawings of the building are the same.

2.2.4 repair in-situ concrete wall height, wall height should be less than the elevation at the end of 10~20mm, such as when a low concrete wall height, you should fill concrete leveling; plus high slab of concrete wall elevation should tick, and to ensure that the upper surface of the floor levels to meet the requirements. Excessive axial-inclination of wall, should be adjusted to ensure that the Board take the wall length to meet the requirements of the building.

3 operational processes

3.1 process:

Mortar screed or hoisting large slabs of hard frame formwork → → adjust → finishing binding reinforcement

3.2 mortar screed or rigid frame formwork: before installing the floor, according to the elevation at the top of wall concrete screed, screed mortar mix for 1:3. When using rigid frame formwork, concrete wall elevation should pound drop 1~2cm.

3.3 the hoisting building Board: find out first before lifting floor entrance location (including heating and plumbing, gas, electrical line opening) and floor direction sign control design drawings to identify each room with large floor models are correct. Installation plate-side against the wall while slowly reducing, fell again after the hook.

3.4 adjust position: adjust plate edges lap length of the building to comply with the design requirements and of two adjacent plates 6 φ 12 tie bar welded to each other, should weld length ≥ 90mm, shall conform to the specification for welding of welding quality requirements.

3.5 organize lashing bars: out of the four weeks of the prestressing steel bent into a circular shape and spread them on the slab, beam or wall, not straight bending hard turn, as shown in Figure 4-42.

Internal wall thickness

D1 internal longitudinal wall thickness

D2 on the wall

A vertical wall

B on the Gables

c

Multilayer 140 160 5 10 15

The top 160 160 15 10 15

Figure 4-42

4 quality criteria

4.1 project:

4.1.1 concrete strength when lifting components must comply with the design requirements and the provisions of the code. Check the widget factory certificate.

4.1.2 floor joints of concrete mix must be accurate, pouring dense, careful conservation, which must meet the design requirements or provisions of the code. Experimental report on inspection of concrete blocks.

4.1.3 floor models, location, point anchoring must comply with the design requirements and no damage. Check the lifting records.

4.2 Basic project:

4.2.1 floor elevation, paste code for design and construction requirements.

4.2.2 shall ensure that two adjacent plates welded lap length, surface should be smooth and weld no dents, no crack, blowhole, slag, welding tumor and undercut.

4.3 allowable deviation, as shown in table 4-38.

5 finished product protection

5.1 Installing the building Board, cast walls concrete strength reached more than 4MPa installation.

Floor installation tolerances in table 4-38

Project tolerance (mm) test method

Axis offset 5-foot check

High level or standard for ± 10 check

Floor shelving ± 10 feet in length check

Surface height difference on the same axis of adjacent 5-foot check

5.2 shall not be arbitrarily picking holes in the floor.

5.3 lifting floor shall be arbitrarily hit touch in-situ walls.

6 quality problems to be noticed

6.1 failed building plates on the wall: the appearance detailed inspection before installation.

6.2 floor installation direction signs and drawings do not conform to the following: due to large slabs of sign drawing requirements are not met, causing holes and drawings do not comply with, feel free to pick your cut damaged floors. Should be checked carefully before installation.

6.3 Board ends frame a wall long enough: hoisting without alignment line the walls, or no serious adjustments, resulting in side frame a wall too little.

6.4 Installing the floor plate end out of steel are not allowed to shut off should not scrape off the keyways nor the bar out on the adjacent Panel below.

6.5 installation when building using rigid frame formwork or screed, its elevation, the design requirements, support shall have sufficient rigidity, promise not to sink.

7 quality records

This standard shall meet the following quality records;

7.1 component factory certificate.

7.2 steel quality certificate or test report.

7.3 steel mechanics performance test report.

7.4 wall concrete, slab concrete testing reports.

7.5 prefabricated lifting records.

7.6 components install section for quality inspection and assessment records.

Because of the war, many people become homeless. I can't do it well. Please help me.my PayPal is xhhnet@163.com.

nstallation technology of prestressed cross plate with a circular hole

Pre installed short to the plate with a circular hole

1 scope

This technology is applicable outside the brick and concrete structure, brick mold, plate mode, frame structure prestressed concrete hollow plate (long and short).

2 construction preparation

2.1 materials and equipment:

2.1.1 prestressed plate with a circular hole: there should be no cracks, warping, and other defects. Product should comply with the quality requirements, should have a factory certificate. Country license components, products should be required to have the license number.

2.1.2 cement: the label over No. 325 of slag Portland cement and ordinary Portland cement and Portland cement. Cement factory certificate, required for the second interview.

2.1.3 sand: sand.

2.1.4 tools: steel Board, pry, casing, pipe supports, 100mmx100mm wood pillars, tools, hard frame formwork fixture, and so on.

2.2 operating conditions

2.2.1 plate with a circular hole into stacked in a specified place, piling yard should be flat and solid, 300mm wood close to the rings or distance plate, align the wood, there shall be no corner slabs, stacking height of no more than 10 blocks. Different panels, piled up.

2.2.2 floors before installation according to the design drawings, check, and check the quality of the plate with a circular hole, deformation, breakage, damages shall not be used.

2.2.3 extreme hole, by Han 50mm before they go out M2.5 mortar Grouting. Installing the front should check whether well plugging. Mortar from the extreme distance to 60mm. Pre-short end anchor plate with a circular hole plate stiffened (bearded wheat), casing should be straightened out, bent 45 ° bend, bend not into a dog leg to prevent faults.

2.2.4 component if there is damage, but through the reinforcement of fair use, and design joint research on reinforcing measures and changes after negotiated procedures only allow installation.

3 operational processes

3.1 process:

Screed or hard Board frame formwork → line → lifting floor → adjust → tying or welding anchor bar

3.2 screed or rigid frame formwork: plate with a circular hole before installation clean the top of the wall or beam, checking the elevation and axis dimensions, according to the design requirements of cement mortar screeds, thickness for 1.5~20mm, with the ratio of 1:3. In the in-situ concrete wall mounting plate with a circular hole, General wall concrete strength reached more than 4MPa, installed. Installation plate with a circular hole or by using frame formwork methods: by the end of the elevation of 100mx100mm wood with steel or wooden pillars supporting the load-bearing wall, above the party bearing slab of wood to the straight, steel or wooden pillar bottom pad through long hand, Poles root wood wedge back to ensure slab elevation.

3.3 line of position: in a load bearing wall or beam of prestressed concrete hollow plate side, according to design drawings and drawing board seam line should be marked on the beam or wall plate model, press design open seams between plates with a circular hole, when design provided, Board width is generally 40mm. Joints wider than 60mm, shall be reinforced according to design requirements.

3.4 lifting floor: uniform force lifting requires the lifting point, surface level, avoiding torsional warping cracking. Such as walls with cement mortar screeds, sprinkled on the floor before a wall or beam lifting pigment slurry (water/cement ratio 0.45). According to the design drawings to check the wall plate number is correct and accordingly may not be misplaced. Line end alignment during installation, slowly decreased after the stand allows decoupling.

3.5 adjust position: lever toggle plate end, plate ends up wall length and distance between plates in accordance with design drawings.

3.6 tying or welding anchor bar: short Board, will end out of a sheet anchor bar (bearded wheat) collated and bend into a 45 ° bend and cross each other. Tie 1 φ 6 connection bars at the intersection. Joints should not be less than 40mm, is greater than 60mm, shall be reinforced according to design requirements. Is strictly prohibited on the anchor bar bent under 90 ° or to the Board. Bent anchor bar bushings when slow bend to prevent bending and breaking. If he is to board a long time, after installation according to drawings will be welding anchor bar, 1 φ 12 long bars, end each plate out of the prestressed steel plate end out of a sheet steel with another isolated spot, but at least every Board spot 4. Meet the requirements of specification for welding of welding quality.

4 quality criteria

4.1 project:

4.1.1 hoisting strength must conform to the design requirements, such as when there is no requirement, should not be lower than the design strength of 70%. Check the widget factory certificate.

Type, location, point 4.1.2 component anchoring must comply with the design requirements and no damage. Check the lifting records.

4.2 Basic project:

4.2.1 elevation, slurry, end plug holes, seam width should comply with the design requirements and the provisions of the code.

4.2.2 welded joints smooth surface, no dents, weld, and weld length to meet the requirements, the joints free of cracks, pores, inclusions and undercuts.

4.2.3 allowable deviation

Floor shelving length: ± 10MM standard check.

Small floor surface height difference:

Plaster 5mm

Don't plaster 3mm

5 finished product protection

5.1 at the plate with a circular hole in the transport and stacking of different panels should be stacked. Stacking ground leveling and tamping, stacking plates and when there is a gap between the ground and drainage measures, transportation Board assembling firm, in case of moving, jumping, or dumping, both on the plate and concrete at rope contact, gasket should be used to protect it.

5.2 structure of concrete wall when installing the floor, under normal circumstances, concrete strength in wall 4MPa above, installed floor.

5.3 short to the pre on the plate with a circular hole, which allowed rejection digging smaller holes, and continuously break two ribs, gently scrape, and must not damage the rest of the Board; when you need to tick a lot of holes in the plate, should be invited to designers to calculate and reinforcement. For the long boards are also only allowed rejection of small holes and not hurt and the main bar, if there are difficulties, should be invited to designers to calculate the relative reinforcement.

5.4 anchorage plate with a circular hole reinforced to properly protect, no bending or breaking.

5.5 after you buckle the plates and middle of the Board should be supported to ensure construction safety and installation quality of the floor.

5.6 installation floor must not tread on the beam.

6 quality problems to be noticed

6.1 Installing the unqualified floor: before you install the floor not only to check the certificate, you should also check for cracks or other defects. Prevention is in place and found not qualified.

6.2 end of lap length in the bearing is not enough: installation not allowed, pull both ends of lap length. Or feel free to move the panels after installation.

6.3 floor blind stitch: not according to the design drawings before installation drawing width line; hoisting without cable in place other people feel free to move the Board, blind, will cause the floor joints.

6.4 lap false floor and support: gusset plate should be checked before the wall elevations, good mortar screed, lining of water the mud during pulping.

6.5 plug hole too shallow and floor anchorage bar broke: check the holes before buckle-blocking design requirements. Short plates anchoring stiffened to straighten out, in accordance with the regulations tying rebar to prevent under pressure into the wall, long to the welding of plate anchorage reinforcement in accordance with the regulations.

7 quality records

This standard shall meet the following quality records

Certificate or test report 7.1 quality steel.

7.2 steel mechanical test reports.

7.3 widget factory certificate.

7.4 certificate of welding electrode factory.

7.5 prefabricated lifting records (pre inspection records).

7.6 components install section for quality inspection and assessment records.

Because of the war, many people become homeless. I can't do it well. Please help me.my PayPal is xhhnet@163.com.

Installation process of bi-steel Composite plate

Installation construction of bi-steel Composite plate

1 scope

This technology is applicable to multi-layer and high-rise multiple civil composite slabs or panel installation. Conditions suitable for industrial construction we can use.

2 construction preparation

2.1 materials and equipment:

2.1.1 double reinforced composite slab: thickness are divided into 50mm and 63mm series. Plane size with three-mode as a benchmark, 50mm, long-4.2m~6.3M, wide l.5M~3.9m. total 72; 63mm, long 4.2m~7.2m, wide 1.5M~3.9m, total 99. Precast composite slab of laminated surfaces should be smooth differential of not less than 4mm artificial surface, the surface shall not be a porous layer and laitance. BI-steel Composite plate to have a factory certificate.

2.1.2 support joints and rigid frame formwork planks, wooden or shaped pillars should be prepared according to the construction plan.

2.1.3 implement vertical transport machinery, steel measuring tape, crowbar, etc.

2.2 operating conditions:

2.2.1 according to drawings, specifications, laminated sheet set and negotiate requirements, draw laminated slab installation diagram. Which should express laminated slab surface, models, seam dimensions, bearing length of shelving, bearing hard frame formwork, temporary support positions, to laminated slab installation.

2.2.2 checking laminated slabs of quality: check for cracks and defects in detail, checking laminated slab surface quality. If it does not meet the quality requirements may be used. And according to the installation diagram checked laminated slab models and specifications.

2.2.3 check elevations and the axis of the wall or beam. Beam and ring beam reinforcement and templates through yin and pre-screening.

2.2.4 laminated slabs stacked and site requirements:

2.2.4.1 prior copy of the space should be flat, solid, and built 3:7 lime in two steps.

2.2.4.2 stacking position with the lifting point. Under each piece of laminated slabs close to the rings should be placed along the laminated slab length to full length wood, align, alignment, pads, pad real. Different panels should be stacked, piled up plates, overlapping is not allowed. Stacking height should be no more than 6 floors. Conditions should be allowed to go upstairs.

2.2.5 hard around the wall frame formwork and butt joints stiff frame support and temporary support, according to the construction plan has been installed, finished and pre-screening.

3 operational processes

3.1 process flow chart:

Check bearings and joints on the hard frame formwork lifting draw laminated slab elevation → line → laminated slabs →

Adjust supports composite slab using length → finishing laminated board throw bars

3.2 for use on composite slab bearing length is smaller (or not support), it generally should be adopted hard around the wall frame formwork, usually single row of pillars and walls locking, spacing between 60~100cm. Wall or beam top elevation decrease l~3cm. Also located at the seam of hard supporting, typically a double row of pillars, spacing of 60~100cm. Installing laminated slabs should be carefully checked before hard frame formwork supporting system, check the wall or beam axis of the elevation, and rigid frame formwork level cord to the top level, and calibration.

3.3 draw laminated slab lines: Heng Leng, on the walls, beams or rigid frame on the side seam line of position by the installation pictures, and mark Board. Butt joints between 100mm, such as plate arrangement when needed may vary between 80mm~170mm. But larger than 100mm seam should be placed close to one side of the plate boundary. As shown in Figure 4-39.

Board retained in Figure 4-39 diagram

3.4 laminated slab hoisting: laminated slab reserved at the hole, before lifting to clarify its position, clear direction. While checking, remove barriers to rebar in place. Hoisting rings should be reserved position, taking eight rings of synchronous lift. But, should make stacks of plywood as delineated in the alignment plate line, design support using slower annual drop in place, stable implementation.

3.5 adjust the use of laminated slabs bearing length:

3.5.1 in crowbar by supports of drawings using length, gently adjusted. If necessary, to help tighten the hook of the crane ropes (but does not support), supplemented by manual lever adjust the length using together.

3.5.2 drawings no requirements on the bearing length of shelving, when the Board sits on your concrete, usually +20mm (that is 20mm into the bearing). If row plate needs may also change between the +30mm~-50mm. But if the wall thickness is less than 160mm, the cylinder boundary length used should be >0. Must be less than -50mm should be dumped as designed to increase muscle length. Use a length of status as shown in Figure 4-40.

3.5.3 in brick-concrete structure in the plate into the bearing length should be greater than 50mm.

3.6 Summary of design rules, finishing four-week thrown out of reinforced composite slab shall not be bent 90 °, shall not be under the pressure plate.

4 quality criteria

Figure 4-40

4.1 project:

4.1.1 components when lifting the concrete strength must comply with the design requirements and the provisions of the code.

Examination methods: examination components factory and the test of sample cured in same condition report.

4.1.2 concrete composite slab joints must be accurate measurement, concrete compaction, curing full, which provisions must meet the design requirements or specifications.

Inspection method: observation and inspection standard curing period 28D block compression test reports and construction records.

4.1.3 laminated slab type, location, point anchoring must comply with the design requirements and has no damage.

Inspection method: observation or standard checks and inspection lifting records.

4.2 Basic project:

Laminated slab elevation, plasma, plate width, should comply with the design requirements and the provisions of the code.

Inspection method: observation, adequate checks.

4.3 allowable deviation, as shown in table 4-37.

Table 4-37

Project tolerance (mm) method

1 axis displacement 5 foot check

2-storey ± 10 level or standard of inspection

3 Board shelving ± 10 feet in length check

Plaster 5

Don't plaster 3

5 finished product protection

5.1 laminated slab pile up and pile site requirements should be strictly in accordance with 2.2.4 implementation.

5.2 when installing laminated slab cast walls, beams, its construction of concrete strength to achieve 4MPa.

5.3 laminated slab on the left bar (anchorage bars) in the course of stacking, transporting, lifting to be protected may not be repeatedly bent and broken.

5.4 hoisting laminated slabs should not be used "reveals", more block lifted. Should be reserved for the rings, synchronous single lifting with eight points. May not impact laminated slab lifting.

5.5 hard frame formwork supporting system of temporary support should be complete before hoisting. Each Panel in width along the long to take additional full-length muleng as temporary support. Next end all pillars should be pave the way through long hand, and under the scaffold-based soil, levelling, compacting.

5.6 non-arbitrary cut holes in the plate, plate holes if required, mechanical drilling and reinforcement design and collection requirements accordingly.

6 quality problems to be noticed

6.1 overcome plate deflection and crack: rigid frame formwork and seam to support its epithelial elevation must be accurate and must have adequate stiffness, strength and stability, to ensure it is not sinking, not tilted.

6.2 overcoming plate bearing shelve length allowed, hoisting should be carefully adjusted.

6.3 failed boards shall not be lifted in place to check before lifting. Especially the artificial surface of composite slab should meet the requirements, loose layers and laitance should be cleaned to ensure concrete laminated surface well.

7 quality records

The standard quality shall have the following records:

7.1 concrete factory certificate.

7.2 structure lifting records.

7.3 precast hoisting pre-screening.

7.4 Sub-item project technology gives the low-down.

7.5 quality inspection and assessment of the project.

Because of the war, many people become homeless. I can't do it well. Please help me.my PayPal is xhhnet@163.com.