What is the maximum span for AK series open web steel joist?
What is the maximum span for AK series open web steel joist?
60 feet
The K-Series joists are standardized in depths from 10 inches (254 mm) through 30 inches (762 mm), for spans up through 60 feet (18288 mm).
How far can bar joist span?
Joist Girders These members have been standardized for depths from 20 inches (508 mm) to 120 inches (3048 mm), and spans to 120 feet (36,576 mm). The standard depth at the bearing ends has been established at 7 1/2 inches (191 mm) for all Joist Girders.
What standard are steel joists governed by?
Steel joists shall be erected in accordance with the Occupational Safety and Health Administration (OSHA), U.S. Department of Labor, Code of Federal Regulations 29CFR Part 1926 Safety Standards for Steel Erection, Section 1926.757 Open Web Steel Joists.
How deep is a 12K1 joist?
K-Series Joist Data
| 10K1 | ||
|---|---|---|
| 12K1 | ||
| Depth (in.) | 12 | |
| Approx. Wt. (lbs.) | 5.0 | |
| 14K1 | 14K6 |
How far apart are steel joists?
Spacing of Lightweight Steel Bar Joists An important design difference between a wood joist and a steel bar joist and a C-beam roof support system is the spacing of joists. Open-web steel bar joists can be spaced up to eight feet apart, depending on the size of the steel used and the roof load.
What is the maximum span for a simple span joist?
The indicated spans are based on simple span joists. Minimum end bearing length is 1½”, spans in bold require web stiffeners at OSB end panel. Maximum spans are measured centerline to centerline of bearing and are based on uniformly loaded joists. Total Load deflection is limited to L/240. Live Load deflection is limited to L/480.
How do I determine allowable lengths of joists and rafters?
Use the span tables below to determine allowable lengths of joists and rafters, based on size and standard design loads. You can also use the Wood Beam Calculator from the American Wood Council website to determine maximum rafter and joist lengths.
Can a rafter span be extended beyond what the table suggests?
Rafter spans can be extended slightly beyond what the rafter tables suggest, when there is a cantelever extending beyond the supporting wall. Ceiling Joist Span Use this table to determine the maximum lengths of ceiling joists based on species of lumber, joist spacing, and joist size.
What is the difference between 2 grade and 1 Grade joists?
The #1 grade material is more expensive than the #2 grade, but if you can use fewer or smaller #1 grade joists or rafters in your design, you may actually save money. Rafter spans can be extended slightly beyond what the rafter tables suggest, when there is a cantelever extending beyond the supporting wall.
