The project owner required big free operation space inside the building, maximum allow 6 pcs column inside the whole warehouse shed, also don't need very tall height for the building, so we choose space frame strcuture as the main structure, total about 40 000 sqm area, only use 6 column inside, must need a light roof structure, all structure made by small steel pipe to ensure the weight of the roof is not heavy.
All support is made by pipe, the connection between the pipe is high strength bolt, it ensure the full support safety. Also the support part is made by special strength steel, which is safety enough for the entire building.
Purlin: galvanized squre steel, the steel get galvanized manufacture treatment will get a longer life time.
Roof sheet: use glass wool temperature insulation materials at the roof, which can against cold temperature out the building.
Sky light sheet: there is transparent sheet at every 15m, so that the light inside the building is good.
Rain gutter: gutter made by steel, in order to extend the gutter life time and prevent rust when it touched with rain water, we galvanized the steel gutter.
Downpipe: use 110mm diameter PVC pipe as rain water down channel.
Door:manual sliding door as main entrance.
Normal bolt use 25*45
Foundation bolt use M24 specification, which is the standard bolt for small workshop.