Lightweight floor system
The lightweight floor system consists of a C-shaped light steel joist and a thin sheet laid on the joist. Prefabricated building supplier joists generally span 3.6 meters to 4.8 meters, joist height of 254 mm (maximum joist gap of up to 11 meters), joist spacing of 600 mm. The joist patented product developed by steel structure manufacturers in the United States has large holes in the web, which is very convenient for the crossing and arrangement of the pipeline. Floor there are three practices, namely: high-density wood fiber cement board; full of pressure plate re-cast 20 mm of ceramsite lightweight aggregate concrete; full orientation wood fiber board or high-density laminated plywood. In these light floor can withstand 316 ~ 365 kg per square meter load.
Vertical wall structure
The vertical wall structure generally takes the inner transverse wall as the bearing wall of the structure, and the wall column is a C-shaped light steel member, the wall thickness of which is determined according to the load to be received, usually 0.84-2 mm, 600 mm. The lower end of the wall column is a bottom slot beam with a U-shaped opening facing upward. The upper end of the wall column is a top slot beam with a U-shaped opening downward, and the joist is fixed on the side edge of the upper slot beam. Prefabricated steel structure building in order to improve the stability of the wall column, the general wall column height set three light steel pull bar. This wall structure arrangement, can effectively bear and reliable transmission of vertical load, and easy to arrange, but the wall structure can not afford horizontal load.
Building insulation and energy saving technology
Building insulation energy-saving technology The United States light steel housing system, the energy-saving insulation technology attaches great importance to the wall to ensure that the insulation effect, in addition to the general addition of glass fiber between the walls of the wall, in the wall and then paste a layer of insulation material , Effectively cut off the thermal bridge through the wall column to the outer wall panels; glass fiber joist filled between the floors to reduce the heat transfer through the floor; all interior wall wall columns are filled with glass fiber reinforced plastic, to reduce the wall The heat transfer between.
Building fire protection technology
Building fire protection technology One of the most critical issues for light steel construction is the application of fire protection technology. Fire gypsum boards are placed on the ceiling of both sides of the wall and the ceiling of the building, and 25.4 mm thick (1 inch) gypsum Board protection in order to achieve 1 hour of fire protection requirements. In addition, fiberglass filled between wall studs and floor joists also plays a positive role in protection against fire and heat transfer.
Building sound insulation technology
Building Sound Insulation Technology In light steel construction, glass wool is filled between the inside and outside walls and the floor joists to effectively block the airborne audio portion. For solid-borne impact sounds, multi-story light steel houses in the United States , Made the following structural treatment: for the wall with two walls with two walls to form the middle of the gap with two walls; and for the ceiling with a fixed gypsum board keel, with a small slot with the elastic structure to Effectively reduce the spread of solid sound between floors.
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