1, construction preparation:
1. 1 materials and components:
1. 1. 1 light steel skeleton is divided into U 100-shaped skeleton.
1. 1.2 The main parts of light steel skeleton are sky, ground, vertical and horizontal keels;
1. 1.3 The cover panel shall be selected according to the design requirements, and the variety, specification and quality of materials shall meet the design requirements.
1. 1.4 adhesive: the adhesive should be selected according to the performance of the main adhesive, and the adhesive test should be done before use.
1.2 main machines:
1.2. 1 chainsaw, toothless saw, nail gun.
1.2.2 hand saw, hand planer, pliers, screwdriver, wrench, square ruler, steel ruler, molten steel, etc.
1.3 operating conditions:
1.3. 1 Various materials are fully prepared.
1.3.2 scaffolding and scaffolding are ready for construction.
2, operation process:
2. 1 process flow:
Play the ground guide wall control line-technical review-fix along the ground and along the top keel (rubber pad)-reinforce the vertical keel (horizontal keel)-seal a gypsum board-concealed acceptance-fill the gypsum board on the other side of rock wool-seal the eyes for antirust treatment-joint treatment-finished product protection.
2.2 construction points
2.2. 1 The varieties, specifications and quality of materials used in construction must meet the requirements of the construction and design unit and the construction quality requirements.
2.2.2 Before construction, the position of the wall and the door opening must be marked according to the design requirements, and the door opening should be reliably connected with the ground.
2.2.3 Check all pipeline positions related to the wall, and the construction can be started only after it is confirmed.
2.2.4 Before installation along the ground and the top keel, 5 thick rubber pads shall be laid around, which are the same width as the keel.
2.2.5 along the ground, along the top keel with nail fixation, spacing of ≤600mm or less.
2.2.6 According to the width b of the panel, the upper and lower ends of the main keel are inserted into the side keel, the spacing is not greater than 1/2b, and the gap c (generally 5mm). The vertical main keel against the wall or column is fixed with nails, and the nail spacing is not more than 900 mm
2.2.7 The vertical keel spacing is 400mm, starting from one end of the wall. When the last one is greater than the design spacing, an additional one will be added, and a keel will be added to strengthen the door on three sides.
2.2.8 In the construction of light steel keel partition wall, the center line of the partition wall drawn on the ground must be led to the ceiling with a wire hammer, and the center line of the groove on the partition wall is consistent with the center line of the ground. Keep the wall surface on the same vertical center line, the installed wall surface will be smooth, and the chalk line between the ground line and the reserved hole of doors and windows should be correct. The plate can only be sealed after review, and the construction can only be started after the pipeline is installed in place when sealing the second side plate.
2.2.9 Panel construction shall meet the following requirements:
A. If the joint is not on the edge keel, a transverse keel fixing panel shall be added.
B. When the distribution box, socket, wall pipe and other equipment are installed in the partition wall, the surrounding gaps should be sealed.
C the upper surfaces on both sides of the doorway shall not overlap, and L-shaped plates shall be installed in a staggered way.
D. For blind joint treatment of partition wall, a gap of 5mm should be left at the joint, and caulking should be carried out. Glass fiber tape or punched paper tape should be pasted outside, and the matching joint putty should be used for leveling.
E. When fixing the panel with self-tapping screws, the distance from the edge should not be less than 15mm, the screw spacing around the panel should not be greater than 200mm, and the screw spacing in the middle part should not be greater than 300 mm. The nails should be slightly embedded in the panel, but the surface of the panel should not be damaged, and leveled with putty after applying antirust paint.
F. The inner and outer plates on one side of the keel shall be staggered, and the joints shall not be arranged on the same keel.
G 5mm gap should be left between partition boards with sound insulation requirements, and after being embedded with putty, they should be operated in the order of blind joint treatment, and 5mm gap should also be left around, and embedded with sealing paste.
H. The partition keel is firmly connected with the matrix structure without looseness.
First, stick the panel with nails and screws, and the surface should be smooth. The pasted panel should not delaminate, and the nails should be slightly recessed into the panel surface.
J, the finished plate surface shall not have defects such as pollution, cracking, lack of edges, falling corners, bumping, etc.
2.2. 10 cover panel installation: before the cover panel installation, all kinds of pipes in the ceiling must be inspected and accepted, and the cover panel can be installed only after the pressure test is qualified. There are many kinds of ceiling cover panels, and the types, specifications and fixing methods should be clearly selected in the design documents. The fixing method of the cover panel and the light steel frame adopts the self-tapping screw fixing method of the cover panel: on the assembled and accepted light steel frame, the cover panel is divided into blocks according to the specifications and drawing gaps of the cover panel, and the cover panel is installed from one end of the partition wall to the other end in turn, and the self-tapping screw spacing for fixing the cover panel is150 mm ~170 mm. ..
3, quality standards
3. 1 master control project
3. 1.2 The materials, varieties, specifications, patterns and colors of the facing materials shall meet the design requirements.
3. 1.3 The installation of keel and facing materials must be firm.
3. 1.4 The material, specification, installation spacing and connection mode of the keel shall meet the design requirements.
3. 1.5 The joints of gypsum board shall be treated for crack prevention according to their construction technology standards. When installing double-layer gypsum board, the joints between the surface board and the base board should be staggered, and there should be no joints on the same keel.
3.2 General projects
3.2. 1 The surface of facing material shall be clean, with the same color, without warping, cracks and defects. Layers should be straight and even in width.
3.2.2 The variety and laying thickness of sound-absorbing materials filled in the partition wall should meet the design requirements, and anti-scattering measures should be taken.
Allowable deviation:
Surface flatness: 3mm.
Seam straightness: 3mm.
Height difference of joints:1mm.
4, finished product protection:
4. 1 During the installation of light steel skeleton and cover panel, attention should be paid to protecting all kinds of embedded pipelines in the wall.
4.2 Materials such as light steel skeleton and cover panel shall be strictly managed during transportation, entry, storage and use to prevent deformation, moisture and rust.
4.3 In order to protect the finished product, the installation of the cover panel must be carried out after all processes of piping, heat preservation and sound insulation are qualified.
5, should pay attention to the quality problems:
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5.2 The light steel skeleton is not firmly fixed: the light steel skeleton should be fixed on the main structure or the fixed bracket connected with the main body, and the support should be firm and reliable to control the fixed design elevation; Piping and equipment parts should be hung on the light steel frame.
5.4 The gap seam of the cover panel is not straight: the specifications of the cover panel are deviated and the installation is incorrect; Pay attention to the plate specifications during construction, align the stay wires, and ensure smooth alignment during installation and fixation.
6, quality records:
6. 1 The keel, hanger and accessories of light steel skeleton shall have product certificates.
6.2 The cover plate shall have the factory certificate.
6.3 Quality inspection and evaluation data shall be available for project acceptance.