# What size beam do I need for a 10 to 12 foot span?

What size beam do I need for a 10 to 12 foot span? Hi guys in this article we know about beam size for 10-12 foot span | how big of a beam do i need to span 10-12 feet.

Beam is generally made of concrete providing with reinforcement Steel. It is load bearing structure and flexural member of concrete that vertical transfer all the incoming dead load,live load and self load of rcc slab to the column via column beam joint through development length of structure element.

Size of beam generally depending on span between two support and all the load acting on it. Beam is structural member subjected to flexural stresses and shear forces . The size of the beam (width and depth of beam) are governed by the different type of shear forces and stresses.

When the beam is subjected to loading the bending moment is developed and the moment carrying capacity of the beam depends mainly on the depth of the beam.

How the size of beam could be decided? In case of RCC beams an appropriate width of the beam is assumed on the basis of experience , the magnitude of maximum bending moment and in some cases on the basis of the width of the wall present below the beam. This width of the should be sufficient to provide rebars with sufficient side cover and spacing between the bars. After assuming the width the effective depth of the beam is calculated based on the bending moment and then the overall depth of the beam is determined by adding effective cover to the effective depth calculated.

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Beam is different types like cantilever beam, continuous beam, simply supported beam, fixed beam, overhanging beam,lintel beam, primary beam and secondary beam. A cantilever beam is a rigid structural element that extends horizontally,one end is free and is supported at only one end. Simply supported beam is supported at two end and continuous beam is supported by more than two support end.

## What size beam do I need for a 10 -12 foot span?

Beam is provided with the top bar which experience compression and bottom bar which experiences tension. Mainly tension bar encounter the bending moment and stirrup of which are provided to incounter the shear forces.

We can always take the standard size of the rcc concrete beam size at least 230mm x 230mm (9” x 9”) in which width and depth of beam is 230mm (9″). The depth of the beam increases or decreases according to their span and applied load on the beam. Now there is remarkable question “what size beam do i need for a 10-12 foot span?”.

There is various method to deciding beam size its width and depth of beam. 1) IS 456:2000, 2) Thumb rule method

1) According to IS 456:2000 for designing of minimum size of RCC column for 2- 3 storey building its recommendation is:- a) for cantilever beam span to effective depth ratio is 7 (span/effective depth=7), for simply supported beam span to effective depth ratio is 20 (span/effective depth=20) and for continuous beam span to effective depth ratio is 26 ((span/effective depth=26).

2) Thumb rule method:
You can also calculate the size and depth of the beam according to thumb rule method mention below
1 foot (span of the beam) = 1Inch (depth of beam)
If the span of the beam is 12 feet, then the depth of the beam will be 12 inches, beam depth taken as 12″ and beam width 12/1.5=8, taking as 9″.

Steel beam size for 3m, 4m, 5m, 6m, 7m, 8m &#038; 10m span

What size beam do I need for a 10 to 12 foot span?

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For beam span 10 -12 foot, this general thumb rule, we will assume a structure of G+0/ 1 storey/one floor/ ground floor residential building, using standard 9″ thick walls, size of an RCC beam should be 9”x 9” (230mm x 230mm) in which width of beam is 9″ and beam depth is 9″, using 4 nos bar, 2 bars of 12mm Fe500 Steel used at bottom and 2 nos of 12mm Fe 500 used at top with m20 grade of concrete and stirrups of T8@6″C/C.

How big of a beam do i need to span 10-12 feet? For beam span 10 -12 foot, this general thumb rule, we will assume a structure of G+1/ 2 storey/two floor residential building, using standard 9″ thick walls, size of an RCC beam should be 9”x 12” (230mm x 300mm) in which width of beam is 9″ and beam depth is 12″, using 6 nos bar, 2 bars of 16mm Steel used at bottom,2 nos of 12mm used at top and 2nos of 12mm crank bar of Fe 500 grade of Steel with m20 grade of concrete and stirrups of T8@6″C/C.

What size beam do I need for a 10 -12 foot span? For beam span 10 -12 foot, this general thumb rule, we will assume a structure of G+2/ 3 storey/three floor residential building, using standard 9″ thick walls, size of an RCC beam should be 12”x 12” (300mm x 300mm) in which width of beam is 12″ and beam depth is 12″, using 6 nos bar, 2 bars of 16mm Steel used at bottom,2 nos of 12mm used at top and 2nos of 12mm crank bar of Fe 500 grade of Steel with m20 grade of concrete and stirrups of T8@6″C/C.

Beam size for 10-12 foot span:- For beam span 10 -12 foot, this general thumb rule, we will assume a structure of G+3/ 4 storey/four floor residential building, using standard 9″ thick walls, size of an RCC beam should be 12”x 15” (300mm x 380mm) in which width of beam is 12″ and beam depth is 15″, using 10 nos bar, 4 bars of 16mm Steel used at bottom,4 nos of 12mm used at top and 2nos of 12mm crank bar of Fe 500 grade of Steel with m20 grade of concrete and stirrups of T8@6″C/C.

For beam span 10 -12 foot, this general thumb rule, we will assume a structure of G+4/ 5 storey/five floor residential building, using standard 9″ thick walls, size of an RCC beam should be 12”x 18” (300mm x 450mm) in which width of beam is 12″ and beam depth is 18″, using 10 nos bar, 4 bars of 20mm Steel used at bottom,4 nos of 16mm used at top and 2nos of 16mm crank bar of Fe 500 grade of Steel with m20 grade of concrete and stirrups of T8@6″C/C.

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For beam span 10 -12 foot, this general thumb rule,using standard 9″ thick walls, size of an RCC beam for 1 storey/ G+0 building, it could be 9”x 9” (230mm x 230mm), for 2 storey/ G+1 building, it could be 9”x 12” (230mm x 300mm), for 3 storey/ G+2 building, it could be 12”x 12” (300mm x 300mm), for 4 storey/ G+3 building, it could be 12”x 15” (300mm x 380mm) and for 5 storey/ G+4 building, it could be 12”x 18” (300mm x 450mm), providin Fe 500 grade of Steel with m20 grade of concrete and stirrups of T8@6″C/C and clear cover 25mm.

What size beam to span 12 ft:- as per general thumb rule and guidelines, a 3 nailed 2×10 or 3-2×10 or 6×10 size of wood beam can allow to span 12 ft. Thus, for a 12 foot span, you will need atleast 3-2×10 or 6×10 size of wood beam. For a 12-foot spans, the wood beam has to be at least 10 inches in depth and 6″ in width (3-2×10) used for residential building, wood frame structure or projects.

What size beam to span 10 ft:- as per general thumb rule and guidelines, a 3 nailed 2×8 or 3-2×8 or 6×8 size of wood beam can allow to span 10 ft. Thus, for a 10 foot span, you will need atleast 3-2×8 or 6×8 size of wood beam. For a 10-foot spans, the wood beam has to be at least 8 inches in depth and 6″ in width (3-2×8) used for residential building or projects.