Table of Contents
How thick are steel joists?
Standard depth = 2.5”. Deeper depths may be available from joist manufacturer. Joist Substitutes standard depths are 2.5 inches and may have extended ends for overhangs (outriggers).
How wide is a steel joist?
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). The LH-Series joists are standardized in depths from 18 inches (457 mm) through 48 inches (1219 mm), for spans up through 96 feet (29261 mm).
What is an H joist?
H-Beam, as the name suggests, is rolled steel joist (RSJ) with the cross section in the form of the capital letter H. It is the one of the most common and widely used structural steel member used in both residential and commercial building projects.
What size are joists?
Typical Floor Joist Size In Residential Construction Floor joists range from 2×8 to 2×12. It is less common to see joists that are 2×6, even though they are included in joist span tables. Older homes are more likely to use 2×6 for joist framing.
How deep is a 15k4 steel joist?
K-Series Joist Data
| 10K1 | ||
|---|---|---|
| Depth (in.) | 10 | |
| Approx. Wt. (lbs.) | 5.0 | |
| 12K1 | 12K3 | |
| Depth (in.) | 12 | 12 |
How deep is a 30K10 joist?
K-Series Joist Data
| 10K1 | ||
|---|---|---|
| Depth (in.) | 28 | 28 |
| Approx. Wt. (lbs.) | 8.9 | 10.5 |
| 30K7 | 30K10 | |
| Depth (in.) | 30 | 30 |
How do you read steel joist designations?
The K-Series, LH-Series and DLH-Series standard joist designations shall be established by their nominal depth, followed by the letters K, LH or DLH as appropriate, and then by the Section Number designation assigned. The Section Number designations shall range from 01 to 25.
What’s stronger I beam or H beam?
The cross section of the H beam is stronger than the cross section of the I beam, meaning it can bear a greater load. In comparison, the cross section of an I beam can bear direct load and tensile but cannot resist twisting because the cross section is so narrow. This means that it can only bear force in one direction.
How wide should floor joists be?
Floor joists are generally 6, 8, 10, or 12 inches in width, with 8 or 10 inches as the most common sizes. Floor joists come in dimensional lumber lengths from 8 to 16 feet or more. Floor joists support most of your home’s weight and play a crucial role in structural integrity.
What is the spacing for joists?
How Far Apart Should You Space Deck Joists? The short answer: deck joists are typically spaced either 12 inches or 16 inches apart, on center. (On-center means the length from the center of one joist to the center of the next joist, rather than a gap from edge to edge).
How do you specify a joist?
Is C Channel stronger than I-beam?
In ground piling applications, C-sections offer high bending in load bearing and soil friction for reliable anchoring. The C-beam maintains strength tolerances at a lower gauge than the I-beam, which results in thinner, lighter components.
How much can an H beam support?
330 feet
H-beam: H-beams can be used for spans up to 330 feet. I-beam: An I-beam may be used for spans of between 33 and 100 feet.
What size should joists be?
Commonly used joist sizes are 2-by-6, 2-by-8 and 2-by-10. For example, when you space joists 16″ apart — which is standard for residential decks — a deck spanning 9 1/2′ would require 2-by-6 joists, a 13′ deck would need 2-by-8 joists and a 16′ deck calls for 2-by-10 joists.
How do you calculate joist size?
For example, assume the clear span is 15 feet 6 inches. Round up to 16 and divide this span by 2, giving you 8. Next, add 2 to get the required joist depth. In this example, 8 + 2 = 10, so a 2×12 floor joist will be required (it’s important to use the actual lumber dimensions, not the nominal dimensions).
What size should floor joists be?
What is the size of a DLH joist?
LH/DLH 2 thru 12 3/8” A307 LH/DLH 13 thru 17 1/2” A307 DLH 18 thru 20 5/8” A307 DLH 21 and 22 5/8” A325 DLH 23 thru 25 3/4” A325 * Refer to last digit(s) of standard SJI joist designation. Note: Washers shall be used with slotted or over-sized holes.
What is a Steel Joist Institute specifications and load table?
These tables originally appeared in the Steel Joist Institute Specifications and Load Tables, commonly referred to as a catalog, beginning with the first edition published in 1932. Each load table was accompanied by notes and instructions covering assumptions and other important information.
What are the OSHA dimensions of a joist span?
OSHA TABLES A and B ERECTION BRIDGING Joist Span Joist Span 12K1 23’ – 0” 30K9 45’ – 0” 14K1 27’ – 0” 30K10 50’ – 0” 16K2 29’ – 0” 30K11 52’ – 0” 16K3 30’ – 0”
What are the different sizes of deep steel joists?
64″ Deep Steel Joist: 64DLH12, 64DLH13, 64DLH14, 64DLH15, 64DLH16, 64DLH17, 64DLH18 68″ Deep Steel Joist: 68DLH13, 68DLH14, 68DLH15, 68DLH16, 68DLH17, 68DLH18, 68DLH19