Requirements for laying site：
1.The floor shall be laid after the completion of indoor civil engineering and decoration construction;
2.The ground shall be flat, dry, free of sundries and dust;
3.The layout and laying of cables, wire, waterway and other pipelines and air conditioning system for available space under the floor,shall be completed before the installation of the floor;
4.The fixing of large heavy equipment base shall be completed, the equipment shall be installed on the base, and the base height shall be consistent with the finished height of the upper surface of the floor;
5.220V / 50Hz power supply and water source are available at the construction site

Construction steps：
1.Carefully check the flatness of the ground and the perpendicularity of the wall. If there are major defects or local reconstruction, it shall be put forward to the relevant departments of Party A;
2.Pull the horizontal line, and use the ink line of the installation height of the floor to bounce onto the wall to ensure that the laid floor is at the same level. Measure the length and width of the room and select the reference position, and bounce the network grid line of the pedestal which is to be installed on the ground to ensure that the laying is neat and beautiful, and reduce the cutting of the floor as much as possible;
3.Adjust the pedestal to be installed to the same required height, and place the pedestal to the cross point of the ground grid line;
4.Fix the stringer to the pedestal with screws, and calibrate the stringer one by one with level ruler and square ruler to make it both in the same plane and perpendicular to each other;
5.Place the raised floor on the assembled stringer with the panel lifter;
6.If the remaining size near the wall is less than the length of the raised floor, it can be patched by cutting the floor;
7.When laying the floor, level it one by one with a blister spirit level. The height of the raised floor is adjusted by the adjustable pedestal. Handle it carefully during the laying process to prevent scratching the floor and damaging the edge strip. At the same time, clean it while laying to avoid leaving sundries and dust under the floor;
8.When the machine room is equipped with heavy equipment, pedestal can be increased under the floor of the equipment base to prevent the floor from deformation;

Acceptance criteria
1. The bottom and the surface of the raised floor should be clean, free of dust.
2. There are no scratches on the floor surface, no coating peeling off, and no damage to the edge strip.
3. After laying, the whole floor should be stable and firm, and there should be no shaking or any noise when people walk on it;