Modular Support Systems Technical Guide, Edition 2
3.0 Modular Support System
3.1.2 MT Beam and Column Load Tables
Table 14- Load and Deflection Factors for Beams Span and Loading Condition
Load Factor
Deflection Factor
Simple Beam – Uniform Load 1.00 1.00
Simple Beam – Concentrated Load at Mid-span 0.50 0.80
Simple Beam – Two Equal Concentrated Loads at ¼ Points 1.00 1.10
Beam Fixed at Both Ends – Uniform Load 1.50 0.30
Beam Fixed at Both Ends – Concentrated Load at Mid-span 1.00 0.40
Cantilever Beam – Uniform Load 0.25 2.40
Cantilever Beam – Concentrated Load at End 0.12 3.20
Continuous Beam – Two Equal Spans, Uniform Load on One Span 1.3 0.92
Continuous Beam – Two Equal Spans, Uniform Load on Both Spans 1.00 0.42
Continuous Beam – Two Equal Spans, Concentrated Load at Center of One Span
0.62 0.71
Continuous Beam – Two Equal Spans, Concentrated Load at Center of Both Spans
0.67 0.48
The allowable beam load tables in this technical guide are for single-span supported beams with uniform loading. Common arrangements of other load and support conditions are shown in the above table. Loads and deflections for these conditions can be determined by multiplying the load value from the tables by the given load and deflection factors. Additional reduction factors for unbraced beam lengths may apply per the tables on page 67.
EXAMPLE 1) EXAMPLE 2) Determine the maximum allowable load and deflection
Determine the maximum allowable load and deflection for an MT-50 fully braced cantilever beam with a for a two-span MT-70 fully braced continuous beam concentrated load at the unsupported end. that is uniformly loaded on one span.
SOLUTION: SOLUTION: 1. Allowable load and deflection for an MT-50 with a 48”
1. Allowable load and deflection for MT-70 with a 48” span span from Table 16 on Page 36 is 1,000 lbs and 0.24”. from Table 25 on Page 39 is 2,520 lbs and 0.28 inches.
2. Multiply by factors from above table: 2. Multiply by factors from above table:
Load =( 1,000 lbs-1.97 x 4) x 0.12 = 119 lbs Load =( 2,520 lbs-2.64 x 4) x 1.3 = 3,260 lbs
Deflection = 0.24” x 3.20 = 0.77”
Deflection = 0.28” x 0.92” = 0.26”
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