Thursday, February 16, 2017

Granite installation method

1, dry hanging granite curtain wall production installation, including the following main processes:
(1) granite sheet procurement;
(2) granite sheet processing (cutting, polishing or polishing, chamfering chamfering, grooving, extension hole);
(3) granite curtain wall embedded parts installation;
(4) granite curtain wall keel installation;
(5) granite curtain wall lightning protection device installation;
(6) granite curtain wall fire belt installation;
(7) granite curtain wall plate installation;
(8) Note sealant.


2, process operation process:
Construction preparation → inspection and acceptance of stone plate → the plate in order to stack → early installation → reinforcement → acceptance.
3, the basic operating instructions:
(1) construction preparation;
As the plate is installed throughout the curtain wall installation of the final finished product links, in the construction to be fully prepared before the work. Preparations include personnel preparation, material preparation, construction site preparation. In the arrangement of the plan, according to the actual situation and the project schedule plan to arrange staff, under normal circumstances each group arranged to produce 3-6 people. Arrangements should pay attention to the old and new with, to ensure the normal construction and the old with the new principle of material and equipment to prepare whether the full, to check the construction of the face of the plate is the scene, whether there is no field or damaged plate, Stone and other materials and consumables are satisfied to use. Construction site ready to leave enough time in the construction section to meet the installation needs, while the row of grating to clean up and adjust the row to meet the installation requirements.
(2) inspection and acceptance of stone plate;
Check the contents of:
A, the number of specifications is correct;
B, whether there is dislocation between the layers;
C, stacking is safe and reliable;
D, whether there is an error exceeding the standard plate;
E, whether there is a color difference over the standard plate;
F, whether there have been damaged plate;
Acceptance of the contents are:
A, three-dimensional error is within the control range;
B, whether there is damage, the replacement to be replaced;
C, whether there is an abnormal phenomenon of glue;
D, sampling to do structural adhesive bonding test;
Check the acceptance to do a good job of detailed records and binding into a book Endorsement to participate in the list of acceptance inspectors.
4, stone plate in accordance with the installation sequence specifications stacked: in the installation of the plate in accordance with the order of installation before stacking, stacking should be appropriate tilt, so as not to plate overturned.
5, the initial installation:
(1), hanging curtain wall plane reference line
Curtain wall keel installation after adjustment, from the top of the stone curtain wall curtain wall vertical plane line. This plane is generally selected in the curtain wall on the right side of the corner position. Hanging line to consider the granite curtain wall and other types of curtain wall with the same time to consider the stone curtain wall itself, the ability to adjust the plane. Each corner of the plane should be hanging vertical lines.
(2), pull the horizontal line
According to the design and construction of the actual situation to determine the bottom of the stone curtain wall position, pull a vertical line between the two vertical lines. Horizontal and vertical lines determine the curtain wall plane.
(3), loaded stone plate
A, will have been installed after the bolt, aluminum alloy fasteners hanging on the pendant fixed;
B, if the stone and the flat line is not smooth adjustment of fine-tuning bolts, adjust the flush, fastening bolts;
C, the installation of slip bolts;
D, after the installation of a plate before a plate and vertical and horizontal plane as a benchmark. The other with the first block. At the same time should pay attention to adjust the curtain wall transverse straightness, vertical seam straightness, patchwork width tolerance to meet the regulatory requirements;
Whether there is a damaged plate, whether or not there is a damaged plate,
6, reinforcement: timely reinforcement after adjustment to ensure that each piece of stone installation success rate.
7, acceptance: each installation, from the installation process to the installation is complete, the whole process of quality control, acceptance is also interspersed with the whole process, the acceptance of the contents are:
(1), whether the plate itself is a problem;
(2), whether the size of plastic joints meet the design requirements, whether the vertical and vertical joints;
(3), whether the stone plate is wrong surface phenomenon, whether the color within the allowable range;
(4), stone angle is damaged;
Acceptance records, on the fastener, on the stone and other materials belonging to the scope of concealed projects, according to the relevant provisions of concealed works to do all kinds of information.
8, the main process of quality control procedures and acceptance criteria:
8.1 granite sheet procurement
8.1.1 Quality control points:
A, stone material;
B, stone physical properties;
C, stone surface treatment;
8.1.2 Purchasing Quality Responsible Person:
project manager
8.1.3 Inspection method
A, check the stone chemical composition test report, if necessary, sampling re-examination;
B, check the physical properties of stone test report, if necessary, sampling re-examination;
C, send samples and confirm the closure of the sample; the stone model to the owners, design and supervision of the three parties to confirm the closure of the sample, as a basis for procurement and acceptance.
8.1.4 Acceptance criteria
A, for the external walls of granite should use igneous rock;
B, stone water absorption should be less than 0.8%;
C, stone bending strength should not be less than 8.0N / mm2;
D, stone volume density of not less than 2.5g / cm3;
E, stone dry compressive strength of not less than 60.0MPa;
8.2 Granite sheet processing
8.2.1 Quality control points
A, size;
B, flatness;
C, angle;
D, appearance quality.
8.2.2 Stone processing quality responsible person: project manager
8.2.3 Inspection method
A, visual method;
B, watering method;
C, hammering method;
D, steel tape measurement, steel ruler measurement, vernier caliper measurement
E, steel ruler and ruler measurement flatness;
F, steel angle ruler and feel measure angle.
8.2.4 Acceptance criteria
(1), the general plate size size tolerance should meet the following table (mm).
Classification of fine surface, mirror sheet rough panel
Grade superior products first-class goods superior products first-class goods
Length, width 0 0 0 0
-1.0 -1.5 -1.0 -2.0
Thickness (> 15) ± 1.0 ± 2.0 +1.0 +2.0
-2.0 -3.0
(2), special plate size specifications allowable deviation according to the provisions of the contract acceptance.
(3), the same plate thickness allows a difference of 3mm.
(4), flatness tolerance limit tolerance in line with the following table requirements (mm).
Plate length range of fine surface, mirror sheet rough panel
Excellent first-class products such as superior products first-class goods
L? 400 0.20 0.40 0.80 1.00
400 <L <1000 0.50 0.70 1.50 2.00
L ≥ 1000 0.80 1.00 2.00 2.50
(5), angle tolerance limit tolerance in accordance with the following table (mm).
Plate width range of fine surface, mirror sheet rough panel
Excellent first-class products such as superior products first-class goods
L? 400 0.40 0.60 0.60 0.80
L> 400 1.00
(6), the gap between the front and the side of the patchwork plate shall not be greater than 900;
(7), the same batch of plate color pattern should be basically reconciled;
(8), the appearance of the front panel defects should meet the following table:
Name of the provisions of the first grade goods
Missing length of not more than 10 mm (except for length less than 5 m), perimeter per meter long (one) not allowed 1
Missing area of ​​not more than 5mmx2mm (less than 2 mmx2mm excluding), each board (a)
The length of the crack does not exceed the length of the board to the total length of 1/10 (length less than 20mm does not count), each board (Article)
Spot area of ​​not more than 20mmx30mm (area less than 15 mmx15mm excluding), each board (a)
The length of the color line does not exceed the length of the board to the length of the board to a total length of 1/10 (less than 40mm length), each board (Article) 2
The front of the pockets of the pits is not obvious
(9), slate connection parts without collapse, dark and other defects, other parts of the collapse of not less than 5 mmx20mm or missing angle of not more than 20mm can be used after repair, but each layer of stone blocks should not be greater than 2% And should be used for facade is not obvious parts.
(10), stone plate number should be consistent with the design, not due to processing caused by confusion.
(11), stone opening slot, the width should be 6 - 7mm, stainless steel support plate thickness should not be less than 3.0 mm, aluminum alloy support plate thickness should not be less than 4.0 mm.
(12), the stone can not be damaged after the crack or crack, the slot should be polished into 450 chamfer, the slot should be smooth and clean.
(13), needle groove stone grooved position according to the drawings processing, needle flat groove length should not be less than 100MM, in the effective length of the groove depth should not be less than 15MM, slot width should be 6-7MM, the effective length of the arc slot Should be less than 80MM.
(14), the steel anchor hole should be based on the size of the stone according to the drawings processing, hole from the edge of the edge shall not be less than 3 times the thickness of the slate, nor greater than 180MM, steel anchor spacing should not be greater than 600MM, steel anchor hole depth 22-23MM, the diameter of the hole 7MM or 8MM, steel anchor diameter of 5MM or 6MM, steel anchor length should be 20-30MM.
(15), slate and stainless steel or aluminum alloy pendant application of epoxy resin-specific structural adhesive, bonding before the stone washed rinse, dry before the bonding construction, and should be selected by the technical requirements of plastic For curing curing, stone construction glue thickness should be 2MM-3MM.

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