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 Portal Steel Frame

Molecular Formula:

   It can be used for kinds of building, which includes monospan steel frame, double-span steel frame and multi-span steel frame.

Describe:
     

Steel Structures
 
Steel Structures
Portal Steel Frame
    
    
It can be used for kinds of building, which includes monospan steel frame, double-span steel frame and multi-span steel frame. It can assemble the crane. Fro portal steel frame light house steel construction, the formed steel sheet and cold bend thin wall purline should be used as the roof. Steel column and steel girder of it should adopt welding H steel, which material are Q235 or Q345.

LRF system is rigidity frame of roof with mild gradient. It adopts the column of uniform section or the one of  non-uniform section, roof girder with non-uniform section which is best in design of location. The cost of material is economical and the middle of the beam is near horizontal. There is no column inside which enables the workshop is spacious in span. This system does not need big space and the roof gradient is mild which decreases the heating cost of the nonuse space. This system can satisfy all kinds of buildings and it is the most economic design.
Width
9--48m 
Brim height
3--9m 
Roof gradient
1:12 1:16 1:20
Column space
6m 7.5m 8m 9m 
Rigidity, attached with the beam

Except the characters of the LRF system, LRFM system has 1 to 5 columns which makes the workshop more spacious and the allocation of the lines more compact and efficient. Thus the land of the workshop is in full use. This design is applicable to warehouse, office and light industry workshop.
Width
1 column: 24--54m; 2 columns: 36--84m   3 columns: 48--108m
Brim height
3--9m
Roof gradient
1:12 1:16 1:20
Column space
6m 7.5m 8m 9m

LP2M system includes the characters of LP2 system, the ones of LRFM system, and has rigidity frame. With columns, the business application of it is more economic in design. It is applicable in warehouse, showroom and large-scale clothing factory.
Width: 1 column: 15--48m; 2 columns: 34--72m; 3 columns: 48--96m
Brim height
3.6--7.5m
Roof gradient
1:24 1:30 1:36
Column space
6m 7.5m 8m 9m
embedded beam
Rigidity, attached with the beam

LP4M system has all the characters of LP2M and LP2 which make it with modern outlook and the minimum roof gradient. It adopts non-bolt roof system, which performs well in waterproof. Like all the LP with joist frame and vertical bridle system, it has column space of 12m, 15m or 18m. It is applicable in shopping center, supermarket, warehouse and office building.
Width: 1 column: 15--48m; 2 column: 30--72m, 3 columns: 45--96m
Brim height
3.7--7.5m
Roof gradient
1:48
Column space
6m 7.5m 8m 9m
embedded beam

LSSM system has mild gradient, with one-way slope and single drainage area. It has characters of typical beam attached and mini roof Structures, so it is applicable in shop, simple warehouse and  expanding of the building. The columns can be added in order to increase the space.
Width: no column: 18--25m, 1 column: 18--31m, 2 column: 35--46m, 3 column: 48--61m
Brim height
3.7--7.5m
Roof gradient
1:48
Column space
6m 7.5m 8m 9m
Rigidity, attached with the beam

 

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