Installation technology of indoor plastic drainage pipeline

1 scope

The standard is suitable for civil and industrial indoor living drainage, rain and acid or alkaline drainage pipe installation works.

2 construction preparation

2.1 materials requirements:

2.1.1 pipes unplasticized polyvinyl chloride (UPVC). The adhesive used should be of the same manufacturers accessory products should be suitable and sanitary connections, and product certification and manual.

2.1.2 pipe inside and outside surface should be smooth, without air bubbles, cracks, the wall thickness uniformity, consistent color. Straight pipe deflection is not more than l%. Tube modelling should be rules, smooth, Burr-free. Socket and socket support.

2.1.3 other materials: adhesives, steel, bar, card, bolts, nuts, SOAP, etc.

2.2 the main tools:

2.2.1 hand drills, impact drills, hand saws, milling mouthparts, steel scraper, adjustable wrench, hammer, level, sets of silk, brush, cotton, thread, etc.

2.3 operating conditions:

2.3.1 pipes, should measure a good Groove, Groove must be straight, must have a slope, bottom solid.

2.3.2 concealed piping (including equipment and silos, pipes in the ceiling) should first check the arrangement of the elevation, coordinates various pipes with or without contradiction. Reserve holes, embedded with complete. Civil template has been removed, clean operation site, install height more than 3.5M should make an outline.

2.3.3 indoor wall mounted pipe and structural progress under two conditions apart to install. Indoor horizon should be playing, early decorated plastering is complete. Installation site without obstructions.

3 operational processes

3.1 process:

Installation preparation – perform the installation standpipe installation → → → dry tube tube fixed → card →

Seal plug-hole water → → closed water test test

3.2 operations: according to the drawing requirements and the actual situation, reserved outlet position measurement, draw processing sketches. According to sketches nice pipe size, broken pipe. Flush fracture, fracture of milling cutter or scraper to get rid of fin, edge milling outside the 15-degree angle. Bonding before the socket insert the test first, not all inserts, General 3/4 of the socket depth. After passing the test plug, with cotton and spigot required bonding parts of water, dust, wipe clean. If oil needs to use acetone to remove. Use brush to apply adhesive, smear after smear socket socket, then inserted vertically, insert the bonding socket a little turn to facilitate adhesive evenly around 30s to 1min firm bonding. Glued immediately after the overflow adhesive wipe clean. Attention should be reserved more than adhesion.

3.3 pipe installation: first according to the design drawings of the coordinates, elevation reserved slot holes or service sleeve. When buried according to the design coordinates, elevation, slope, direction of slope excavation grooves and solid. Tora hanging tube should be used according to the design coordinates, elevation, aspect do care, and hangers. Construction conditions, to perform a pipe, by number to the installation site installation. Each section must by adhesion bonding process one by one. After all the adhesions, pipe straight slope even reserved outlet position accurately. Install riser need to install expansion joints, expansion joints on the floor along the margin or squat 70~100mm. Closed water test should be done after the dry tube installed, export with inflatable rubber plug closed without leakage, the water level does not drop for qualified. Fine sand backfill for underground pipelines should be to inhibit the 100mm, sift the overlying soil, tamp not touch damaged pipes. Tora hanging tubes glued and then pressing the slope in the direction of flow. Final provision sealing and plugging the hole.

3.4 pipe installation: first by design coordinates requirements, or after the tick will be reserved hole, hole size not too large, but can not damage reinforcement. To clear the area before installation, pitched on demand platform. Has good pipe transported to the installation site. First clean up had been earmarked for expansion joints will lock unscrewed, remove the u-shaped rubber rings to clean up debris. Review the top hole is appropriate. Stand pipe insertion end insert length marks should be marked, and then coated with liquid soap, locks and u-shaped rubber bands. Installation place the State on the upper end of the tube into the hole in the Insert vertical force to mark (general reserve amount of shrinkage and expansion for the 20~30mm). Right after u made by steel hold card is fastened on the expansion joints along. Being then attempt to find and measure the roof from the tees estuary Center to meet the requirements. Errors can stop a hole, reserved and upper expansion joint sealing.

3.5 branch pipe installation: first of all remove embedded parts hanging tab hole or review is appropriate. To clear the area, pitched as necessary operating platform. Good tubes by number to the field. Remove the adhesive part of the dirt and water. Branch level up, Xu adhesive, push nozzle into reserved. According to the length adjust the slope of the pipe segment. Suitable fixing clamp closed reserved tube and plug the hole.

3.6 connecting pipe installation: verification practice building floors, walls, thickness. Find the provision of coordinates, elevation. Then press results trimmed hole. Site measured dimensions recorded and prefabrication, number. When you install a bonding, reserved nozzle must be cleaned, then bonding. After the cement was found, looking for straight, closed tube and plug the hole. Open the next layer of pipe cleaning, using inflatable rubber plug closed the upper, closed water test. When removing the rubber plug, and sealed the sweep.

3.7 drainage pipe installation, closed water test required by the regulation. Every hidden embedded pipe must be carried out according to a process. After the installation of sanitary ware and equipment, water must pass ball test. And should be in front of the paint finish last operation.

3.8 the underground pipes and roof ventilation pipe do not use rigid PVC drainage fittings cast iron water pipe, cement-twist can be used. To prevent leaks, pipe plug plastic pipe horizontal sanding with a coarse sandpaper rough.

3.9 adhesive volatile after use should be kept sealed. When winter construction adhesive, coagulation time and 2~3min. Bonded areas must be well ventilated and away from open flame.

4 quality criteria

4.1 project:

4.1.1 pipe materials, specifications, dimensions, technical performance must comply with the design requirements of the bonding agent.

4.1.2 covert drainage and storm sewer water test results must comply with the design requirements and construction specifications.

Inspection methods: inspection zone (above) irrigation experiment records, proof and adhesive pipe factory certificate.

4.1.3 the slope must conform to the design or construction of the pipeline specification.

Inspection method: check concealed work record or level (level), the cable and check.

4.1.4 the piping and pipe support (Tun), laying on the permafrost and untreated soil is strictly prohibited.

Inspection method: observation of concealed works of checks or check the record.

4.1.5 drainage pipe must be installed according to design requirements the slip joint. If design is not required, expansion joint spacing shall not exceed 4m.

Inspection method: observation and standard checks.

4.1.6 the water test results after the completion of the drainage system, provision must comply with the design requirements and specifications.

Inspection method: water check or check water test records.

4.2 Basic project:

4.2.1 the piping (crane, Torr) and socket (Tun) installations should comply with the following requirements:

4.2.1.1 neat, brackets and pipe in close contact.

4.2.1.2 bracket distance should according to table 1-10 requirement.

Plastic horizontal drainage pipe fittings the spacing table 1-10

Nominal diameter (mm) 50 75 100

Support spacing (mm) 0.6 0.8 1.0

4.2.1.3 allowable deviation is shown in table l-11.

Indoor plastic drainage pipe installation method for the determination of tolerances and table 1-11

Project tolerance (mm) method

Horizontal pipe bending in longitudinal and transverse direction per 1M 1.5 level (level),

Full length horizontal pipe bending in longitudinal and transverse direction (25m) is less than 38 rulers, cable and check

Per 1M 3 hanging and foot check

Full length (5M) is not more than 15 hanging and foot check

5 finished product protection

5.1 pipe after installation is complete, all nozzles should be closed tight, preventing debris from entering and causing the pipe plug.

5.2 Installing the pipeline protection should be enhanced, especially riser from below 2m, and bundled applications of wood protection.

5.3 prohibit the use of plastic pipe as a scaffolding stand or belt, ceiling suspension points. Do not allow open flames

Baking the plastic pipe to prevent pipe deformation.

5.4 prior to paint pipes should be wrapped to prevent pollution of pipelines.

6 quality problems to be noticed

6.1 good pipe bending or breaking. Straight tube end of the stacked pads solid reasons, or due to exposure.

6.2 interface doesn't look clean and beautiful. Adhesive spills bond after Liu Ying removed in a timely manner.

6.3 sticky interfaces is leaking. Due to uneven coat of adhesive or adhesive is not clean.

6.4 install high or low floor drain, affect the use. Because the horizon is not right.

6.5 seat tube through building leakage. Because risers through building site is not waterproof.

Quality of 7 records

7.1 product certification of pipes and fittings.

7.2 binding agent and duration of use of the certificate.

7.3 horizontal drainage pipe inspection records.

7.4 vertical sewer pipe inspection records.

7.5 drainage tube inspection records.

7.6 drainage pipes hidden records.

7.7 drainage pipe irrigation record.

7.8 drainage water records.

7.9 drainage pipe, horizontal pipe ball records.

7.10 health apparatus water records.

7.11 storm sewer inspection records.

7.12 embedded water pipe pressure test records.

7.13 rainwater pipes hidden records.

7.14 rainwater irrigation system records.