1.1 Spaceframe System Manual
1.2 Chinese GB Material Standards
1.3 ISO Material Standards
1.4 Chinese Design Standards
Loadings: GB 50009-2001
Steel structural design: GB 50017-2003
2.0 Material Strength
2.1 Pipes & cones to GB/T 700 Q235
Min. yield strength: 235 N/mm2
Min. tensile strength: 375 N/mm2
2.2 High-strength bolts to ISO 898-1 class 10.9
Min. yield strength: 940 N/mm2
Min. tensile strength: 1040 N/mm2
2.3 Nodes to GB/T 699 45# in normalized condition
Min. yield strength: 275 N/mm2
Min. tensile strength: 560 N/mm2
2.4 Sleeves to GB/T 700 Q345
Min. yield strength: 345 N/mm2
Min. tensile strength: 490 N/mm2
3.0 Slenderness ratio
The slenderness ratio of all members shall not exceed 180.
4.0 Software
Software: 3-dimensional spaceframe analysis and design (code checking) program from Beijing iKon Tech: SFCAD2000.
2. DESIGN LOADINGS
(1) DL: Dead Load
Roof cladding
Purlins
0.10 kN/m2
0.10 kN/m2
0.20 kN/m2
Spaceframe self weight to be taken the gravity of pipe multiply by 1.2 to include the weight of spaceframe nodes.
(2) LL: Live Load 1.00 kN/m2
(3) WL: Wind Load 0.70 kN/m2
Every 10 degrees as wind load direction WL1-WL36
All the members of the spaceframe will be code checked according to GB 50017-2003 for member tension and compression in the worst load combination listed above. Optimized pipe section will be auto selected thru an iterated method by software SFCAD.