Page 37 - ZSi-Foster Product Catalog

Beam Load Support Formulas

All Beam Load tables are for simple beams supported at the ends. These can be used in the majority of the cases. There are
times when it is necessary to know what happens with other loading and support conditions. Some common arrangements are Introduction
shown below. Simply multiply the values from the Beam Load tables by factors given below.

Load Deflection
Load and Support Condition
Factor Factor Channel
Simple Beam 1.00 1.00
Uniform Load Span
Channel Nuts & Hardware
Simple Beam
0.50
0.80
Concentrated Load at Center
Simple Beam
Two Equal Concentrated Loads at 1/4 Points 1.00 1.10

Beam Fixed at Both Ends General Fittings
Uniform Load 1.50 0.30

Beam Fixed at Both Ends
Concentrated Load at Center 1.00 0.40 Brackets

Cantilever Beam 0.25 2.40
Uniform Load

Cantilever Beam
Concentrated Load at End 0.12 3.20 Beam Clamps

Continuous Beam 1.30 0.92
Two Equal Spans - Uniform Load on One Span Span Span

Continuous Beam Pipe & Conduit Supports
Two Equal Spans - Uniform Load on Both Spans 1.00 0.42

Continuous Beam 0.62 0.71
Two Equal Spans - Concentrated Load at Center of One Span

Continuous Beam Electrical Fittings
Two Equal Spans - Concentrated Load at Center of Both Spans 0.67 0.48

Spring Steel

EXAMPLE I EXAMPLE II
60" 60" 24"
PROBLEM: PROBLEM:
5
5
5
1
Calculate the load and deflection of an W200 (1 ⁄8" x 1 ⁄8" 12 gauge) Determine load and deflection of an W150 (1 ⁄8" x 3 ⁄4" 12 gauge) Concrete Inserts
beam continuous over one support and loaded uniformly on one cantilever beam with a concentrated load on the end.
span. SOLUTION:
SOLUTION: A. From load table for W150 the load for a 24" span is
A. From load table for W200 the load for a 60" span is 700 lbs. 5,360 lbs. and deflection is 0.09". Rooftop Supports
and deflection is 0.35". B. Multiply by factors from Table above.
B. Multiply by factors from Table above Load = 5,360 lbs. x 0.12 = 643.2 lbs.
Load = 700 lb. x 1.30 = 910 lbs. Deflection - 0.09" x 3.20 = 0.288"
Deflection = 0.35" x 0.92 = 0.322" Technical Data

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