250 mm x 400mm
Depends on how much weight is above it!! but on 1 -2 story wood framed structures triple 2x12's glued and nailed will do the trick
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The maximum span for a 2x6 lumber member used as floor joists, spaced 16 inches on center, is typically around 9 feet for residential applications, depending on the load conditions and wood species. For ceiling joists, the span can be slightly longer, usually up to 10 feet. It's important to consult local building codes and a structural engineer for specific requirements and safety factors.
Don't know what you mean by actual size. It could be 80 x 10, but could be any shape.
The recommended patio roof beam span according to the patio roof beam span table is typically around 10-12 feet.
It depends on what the beam is made of.
250 mm x 400mm
The maximum span for a 2x6 beam is typically around 10-15 feet, depending on the load it needs to support and the building codes in place.
The size of the beam needed to span 10 feet for roof support depends on various factors, including the type of material (wood, steel, etc.), the load it will carry, and local building codes. For a typical wooden beam, a common choice might be a 2x10 or 2x12, but calculations based on specific load requirements and spacing are essential. It's advisable to consult a structural engineer or local building codes to determine the exact specifications for safety and compliance.
W8 x 24
about 80 feet (24 metres) long with a maximum beam length of around 10 feet (3 meters)
Around 10 feet long
5-10 feet
The maximum span for a 2x6 board is typically around 10 feet when used as a joist or rafter in construction.
Depends on how much weight is above it!! but on 1 -2 story wood framed structures triple 2x12's glued and nailed will do the trick
10