Load Bearing Beam Size Chart

The Load Bearing Beam Size Chart provides information on the recommended beam sizes and materials based on span length, with options for wood and steel beams.
Span (Feet) Size (W x H) Material
10 4×6 Wood
15 4×8 Wood
20 2×12 or 4×10 Wood
25 4×12 Wood
10 W8x10 Steel
15 W8x15 Steel
20 W10x22 Steel
25 W12x26 Steel
10 8×8 Wood (Douglas Fir)
15 8×10 Wood (Douglas Fir)
20 8×12 Wood (Douglas Fir)
25 8×14 Wood (Douglas Fir)

The Load Bearing Beam Size Chart is a reference guide that provides information on the recommended size of beams that can effectively support various spans. It lists different spans in feet, their corresponding beam sizes, and the materials suitable for each span. The chart includes information for wood beams, steel beams, as well as wood beams made of Douglas Fir. This chart is a valuable resource for architects, engineers, and builders who need to determine the appropriate size of load-bearing beams for different construction projects.


What is a load-bearing beam?

A load-bearing beam is a structural component designed to support the weight of a building or structure above it.

Why is it important to determine the size of a load-bearing beam?

Determining the appropriate size of a load-bearing beam is crucial to ensure it can safely support the intended load without compromising the structural integrity of the building.

How can I determine the correct size of a load-bearing beam?

The size of a load-bearing beam can be determined by consulting a load-bearing beam size chart, which takes into account factors such as the span length, type of load, and allowable deflection or bending.

What information is typically included in a load-bearing beam size chart?

A load-bearing beam size chart typically includes information on different beam materials (e.g., wood, steel), allowable spans, load capacity ratings, and recommended beam sizes based on the load type and other factors.

Are load-bearing beam size charts standardized?

Load-bearing beam size charts may vary slightly depending on the source or specific building codes in use, but they generally provide accurate guidance for determining appropriate beam sizes based on standard engineering principles. It is important to consult local building codes and professionals for specific regulations and recommendations.

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