• by admin
• 2022-07-22

How to install and construct the workshop sandwich color steel plate?

Sandwich color steel plate is a color steel sheet made of composite surface material and core material. With its excellent characteristics, it is widely used in the installation of various prefabricated buildings. The installation and construction of the sandwich color steel plate should pay attention to the method, and the materials should be inspected before entering the site, and then hoisted to the site after confirming that they are qualified. During construction, the color steel sheet is first hoisted to the roof truss, and then the banners are installed. After acceptance, the color steel plate is laid and fixed.

Installation and construction of sandwich color steel plate

Nowadays, the roofs of many steel structure buildings often use sandwich color steel plates. When installing color steel sandwich panel, pay attention to the correct construction method:

1. Material entry

When the sandwich color steel plate material enters the field, the manufacturer should attach the original factory material inspection certificate. Before construction, check the specifications, dimensions and thicknesses of color steel sheet and banners, as well as the specifications, dimensions, thicknesses and spare parts of various edge trimming materials. It is required that the appearance of the color steel plate shall not have any scratches, stains, surface film wear, distortion, pollution, color difference, warping and other phenomena.

2. Lifting

Before the color steel sandwich panels enter the site and set up the designated location, they must be placed in batches and categories. If they cannot be used immediately, they should be neatly stacked and covered with canvas or tape.

3. Hang the roof truss

Before hanging the color steel sheet, a baffle must be set up to prevent it from slipping. When the color steel sandwich panel is hoisted to the roof truss, the color steel plate is fastened on the suspender, and the oblique slings are added at both ends to keep it hoisted smoothly and slowly. After hanging on the roof, the sandwich color steel plate slowly descends, and after the crane operator controls the positioning (cornice baffle), it is put down in sequence. All skin ribs must be upward, and the board surface should be in the same direction (for easy installation, except for the female rib buckle), and should be fixed on the steel main frame with nylon rope (not placed in the center of the purlin).

4. Sandalwood installation

①Leveling: Check and level the purlin support before installation, check the flatness of the purlins one by one, and control the height difference between the installed camphors within the range of +5mm.

②Elastic line: The support point of the purlin should be fixed according to the position of the support point required by the design, and the support point should be drawn with a line, after the installation and positioning of the purlin, it should be checked and accepted according to the purlin layout drawing.

③Fixing: Welding or bolting is carried out according to the design requirements, and the position is adjusted again before fixing, and the deviation is less than or equal to +5mm.

④Acceptance: After the purlin is installed, the technical responsible person of the project will notify the quality officer or the supervision engineer for acceptance, confirm that it is qualified and transfer to the next process.

5. Laying and fixing of color steel plates

The laying sequence of color steel sandwich panels is generally from top to bottom, starting from the direction of the perennial wind tail:

①Roof: Take the gable side as the starting point, and lay it in order from left to right (or the same right to left). After the plate is placed, pull the alignment along the lower edge of the plate, and install each sheet according to the alignment, and check at any time to prevent deviation. The laying surface is fixed on the purlin along the center of each rib with self-tapping screws.

② Close the edge: The lap joints of the roof (including the awning) shall be fixed with aluminum studs and waterproof with water-stop glue. The self-tapping screw head and aluminum rivet head of the roof trimming plate must be prevented with water-stop glue. Ridge cover and cornice flashing (including gutter) must be covered with mountain shaped foamed PE sealing strips. When the construction and fixing method of the edge-receiving board needs to be changed according to its on-site measurement, the drawing after confirmation shall prevail.

③Fixed: Arrange a fixed seat, fix it on the left side of the purlin with self-tapping screws, and then make a reference line on the elastic ink line of the purlin, and then fix the fixed seat in the same row. Align the rib of the block with the rib of the fixed seat, press down and click to check whether the buckle is correct. Fasten the short arm of the fixed seat to the installed panel female rib, construct it according to the above method, and adjust it to be level. If the remaining space is greater than half of the board width, fix the board with a fixed seat, and cut off the excess part.

④Cleaning and waste transportation: In the area where color steel sheet are laid, the metal shavings generated when cutting iron and fixing screws should be cleaned up every day before finishing work. The debris (such as PVC cloth, steel belt, etc.) on the roof, ground and gutter should be cleaned up before the end of the day. After completion, the surface of the sandwich color steel plate should be checked, and the contaminated part should be cleaned.