Floor Deck (steel bearing plate, construction steel sheeting) is cold-formed of galvanized steel sheet by roll forming, cross-section into a V-shaped, U-shaped, trapezoidal or similar shape of these types of waveforms used as permanent formwork also can be selected for other purposes.

(A) it is called:

Combination of floor, floor boards, steel bearing plate, pressure plate, floor plate, the steel floor boards, the combination of floor plate, galvanized steel bearing plates, galvanized floor plate, galvanized floor boards, the combination of floor boards, the combination of floor, floor steel bearing plate, construction steel sheeting, composite slabs, etc., are divided into: opening the floor boards, the whole closed for floor boards, dovetail floor boards etc.

(B) the main features:

1: to adapt to the rapid construction of the main steel structure, to provide a firm platform for the job in a short period of time, and can use more than one floor laying pressure plate, stratified flow construction for pouring the concrete slab.

2: use the stage floor boards as a concrete slab tensile reinforcement, but also improve the stiffness of the floor, saving the amount of steel and concrete.

3: The pressure plate surface embossed to produce the greatest binding force between the floor boards and concrete, so that the two form an overall, together with the stiffener, so that the floor plate system with high-strength bearing capacity.

4: the conditions of the cantilever under the floor boards only as a permanent template. Cantilever the length of the section properties of the floor boards. In order to prevent the cracking of the cantilever plate, need the supports of the Structural Engineers of the design coupled with negative reinforcement.

5: the floor boards of the Company by the National fixed fire extinguishing systems and fire-resistant component quality inspection center fire resistance testing, as a combination of floor boards do not need to fire the spray, thus greatly reducing the project cost.

(C) Application:

The products are widely used in power plants, electrical equipment company, car showroom, steel plant, cement warehouse, steel structure office, airport terminals, railway stations, stadiums, concert halls, Grand Theatre, a large supermarket, logistics center, the Olympic venues, sports venues and other steel construction.

(D) of product testing

a dynamic loading test, qualified for floor boards is subject to several groups of dynamic load test, draw the shear of the composite board - bond coefficient, test out Even for the board and concrete binding capacity obtained in the large span bear on the design load.

b, fire test, the floor three groups in the fire-resistant laboratory 1.5 hours, two hours and three hours to load fire test for simultaneous measurement of temperature distribution within the slab, test out Even Deck whether the insulation requirements, refractory phase of the positive moment resistance.

(E) Floor Deck Construction and use

Profiles thick, floor boards, 0.75mm, 0.8mm, 1.0mm, 1.2mm, 1.5mm wide and 688mm ~ 678mm ~ 600mm ~ 750mm ~ 915mm ~ 1025mm high 5 1 mm ~ 76mm ~ 75mm long project requirements customized. Engineering floor mezzanine deck and reinforced concrete structure together, the composite structure. Laying floor boards to steel beam connections, the board ends and the steel beam penetration welding, intermediate studs with steel beam penetration welding; between the floor boards with special clamping clamp occlusion pressure Kong connection; with special plug galvanized plug boards and floor boards and steel beam spot. If it is with the arc of floor boards profiled cutting and plasma cutting machine cutting, smooth the cut surface of galvanized layer integrity. Floor plate welding using manual arc welding electrode for the E4303, 3.2mm diameter, the penetration welding point is 16mm. The original design of a pad pitch of 305mm after the solder is increased by 1, to ensure that the operator walking floor boards deformation, the end of pouring concrete when the floor boards slurry leakage. When the elevation change of floor layer structure is inconsistent, plus welding steel measures taken, the level structure showed a step transition, when the elevation of the lower I-beam webs plus welding angle; uplift elevation joist flange and weld channel. Encountered floor reserved for the hole size is generally the first open hole measures more than 500mm × 500mm, the increase in the steel beam welding steel joists separated to increase the hole stiffness, mesh reinforced disconnect in the hole, and welding steel; hole size of less than 500mm × taken 500mm when open hole measures, namely the partition plate in the floor board to increase the plug, mesh reinforced through, cut reinforced concrete pouring molding

(F) Floor Deck Installation Notes

Steel column gateway from the general 5 to 9.0m × 8 ~ 15m, the secondary beam spacing of 3m, cutting the length of the floor plate is 4.97 ~ 8.97m, transport and install than those in difficulties, especially with vertical lifting floor from the arc zone for the board, from top to bottom to wear in the secondary beam Hazama sets is more difficult, and disrupted the normal beam welding process. Control the cutting length is 3 ~ 6m, you can avoid the problem of vertical transportation between the secondary beams can not be lifted. The floor board when lifting using a dedicated soft sling. Each lifting should check soft sling is torn, cut off phenomenon. The floor boards shelved on steel beams should be to prevent the probe. Shop materials, the operator should wear a seat belt, and to ensure that the side laying the edge of fixed ropes in the perimeter security. Welding penetration spot welding, the welding should be prepared to scrap arc test welding and adjusting welding current level templates and vertical support for the bottom of the floor boards, cloth when pouring concrete should not be too concentrated, the use of flat-panel vibrators timely assessed vibrators.