Prefabricated Warehouse Building In Steel

Large span steel structure

    The above prefabricated steel structure building designed for warehouse,the clear span is 50 meters.This is our domestic project in China.

Specifications of steel structure building
1. Main steel structure: welded variable cross-section H steel; Q345B grade.
2. Purlin: C section steel;
3. Roof panel: fiberglass 50mm sandwich panel;
4. Wall: with 1.2m brick wall ,75mm sandwich panel above 1.2m;
5. Tie bar: Q345B round tube;
6. Brace: round steel;
7. Lateral and column bracing: round steel;
8. Knee brace: hot- rolled angle steel;
9.Trims,flashing: color steel sheet;
10. Gutter:color steel sheet;
11. Downpipe: PVC;
12. Door: sandwich panel door;
13,  Window: Aluminium window (single glass)
 
Steel structure processing and manufacturing
    According to the installation sequence and process requirement in steel members on the steel platform of prefabrication and assembly, to ensure the welding quality.
Steel stitching seam stitching the flange and web of stitching joint spacing should be greater than 200 ㎜.Flange plate splicing length should not be less than 2 times the width;Web stitching width should not be less than 300 ㎜, length should be not less than 600 ㎜.
Convenience for welding, to ensure the welding quality, as far as possible the stiffener plate on the column, beam, connecting plate, plate, pick beam (beam) on the surface of the steel platform set according to construction drawing size of the welding.
 
 
Steel structure installation quality control
     1) before installation, the construction unit of product certification, design documents and deal with members assembled records for inspection, record the size of the component and the reinspection do not coincide.Deformation of steel structure, defects exceed the allowable deviation, should be handled.
Before the installation, should prepare a detailed measurement and correction process, the thick welding plate shall be before installed in the welding process test of simulated product structure, prepare the corresponding construction technology.Wriggle through the earth to assemble good roof should be preset a certain degree.
(2) steel structure hoisting in place, after dealing with components such as design requirements for control point positioning axis, elevation measurement marking, for lifting the butt joint quality inspection before welding.Temporary support wave and steel cable is installed in order to make the security and stability of steel roof in construction process.
(3) the steel structure installation, the construction unit shall submit each common component after lifting the elevation dimension, welding, painting and so on were submitted to supervision of acceptance.