Steel Flashcards
Common splices provide strength and continuity of stiffness about both axes of the columns. Splices are typically provided every two or three stories and are usually located how many mm above finished floor?
600mm
According to BS EN 1993-1-8, what is the load transmission requirement for splice plates and bolts?
Splice plates and bolts must transmit at least 25% of the max compressive force in the column.
Steel roof deck is typically installed to endlap a minimum of how many inches over the supports?
2 inches
What is the maximum span for a K-Series open web steel joist?
60 feet
What is the standard bearing depth for K-Series open web steel joists?
2 and 1/2 inches
What is the maximum depth for a K-Series open web steel joist?
30 inches
LH Series - standard depths and spans?
Depths: 18 inches through 48 inches
Spans: up through 96 feet
DLH series - standardized depths and spans?
Depths: 52 inches through 120 inches
Spans: up through 240 feet
Joist girders 100’ or less shall have a manufactured camber.
20’ = 1/4” 40’ = 5/8” 60’ = 1-1/2” 80’ = 2-3/4” 100’ = 4-1/4”
Design length = span -4” which means the standard location of the end reaction shall be ___ from the end of the span.
2 inches
Minimum Bearing length for steel joists on masonry or concrete
K series = 4
LH and DLH = 6”
* Extend not less than over the face of the masonry or concrete
Joist girders resting on a bearing plate should be attached by?
Two fillet welds or two bolts
Fillet welds a minimum of 2-1/8” x 2-1/2”
Bolts a minimum of 2-1/2” A307
Bearing plates are required for the connection between the joist and masonry/concrete wall and at a minimum are sized?
7” wide and located 1/2” away from the face of the wall
When placing loads on open steel joists, steel decking should not exceed ______ lbs?
4,000 LB’s
The construction load should be placed within _____ foot of the bearing surface of the joist end.
1 foot
