Steel Erection Flashcards
What is another term for open web steel joists?
H Spans
The long span joists are a part of which series?
LH-series
All joists consist of the following basic elements?
Top chord, bottom chord, web members, and bearing seats.
The most common type of chord is:
Back to back angles
Joist members are always connected by
Welding
Spans for open web steel joists range from:
8-60 feet
Length range for long span joists is:
21-96 feet
Depth range for long span joists is:
18-48 inches
Deep long span joists have a maximum depth of:
72 inches
Beating depth for deep long span joists, chord number 18 is:
7 1/2 inches
What is the load rating of a joist girder with designation 36G9N6K?
6 kips at each joist location, unfactored.
What joist shipping position is particularly vulnerable to damage during unloading/handling?
Flat
The maximum weight of bridging bundles as required by OSHA cannot exceed:
1000 pounds
Joist girders must bear a minimum of how many inches on steel supports?
4
The minimum welded end anchorage for joist girders must be:
Two 1/4 inch fillet welds 2 inches long
The type and quantity of bridging required to maintain stability during erection is defined in
The Steel Joist Institutes Standard Load Tables
The final attachment of joist ends can be made by
Bolting or welding
The purpose of bridging is:
To brace the joists against lateral movement during erection and placing of construction loads
Which joists should be bridged first?
The one nearest the end of the building.
Bridging should be attached by
Welding or bolting
Longspan and deep longspan joists bearing on concrete or masonry supports must bear on:
Steel plates, anchored to the masonry unit for a minimum distance of 6 inches
For spans over 60 feet, bridging connections may be:
Bolted only
Which joists should be bridged first?
The one nearest the end of the building.
For horizontal bridging, the minimum drop is:
3 feet
