Not sure why you need a beam that bears no load. You can go 22'. Beyond that it needs to be broken down to shorter lengths.
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
A 2x8 refers to a 2 inch by 8 foot piece of wood. The span of a 2x8 is 8 feet.
Even using a 2x12 the spacing for 20 feet will be less than 12 inches on center. I would recommend splitting the distance with a double beam perpendicular to the joist run. This will allow you to go up to 24 inches on center. Your span will only be ten feet aproximately this way. I would double the beam. (2-2x12 joined together) Good luck. when building your beam make sure the laps on the beam are at least 6 foot apart and put a good wood glue on the 2x12s plus for added strength put 1/2 inch O.S.B. in between the 2x12 and I would also lag or bolt them together, at about 16 to 24 inches O.S.B. = Oscilating Strand Board.
depends on length
About 5metres(16') but would have to be stress graded timber.
1 ft by 1.2 ft... verticaly 1.2ft
Not sure why you need a beam that bears no load. You can go 22'. Beyond that it needs to be broken down to shorter lengths.
Triple? That sounds an awful lot like gluelam... Which requires engineer approval to meet code. The inspecting engineer will be able to tell you.
1x24, 2x12, 3x8, 4x6 are all the natural number combinations.
How far can 1 by 6 span without support
not me. so far.
96
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
The width is 2 in this case.
A 2x8 refers to a 2 inch by 8 foot piece of wood. The span of a 2x8 is 8 feet.
1x24, 2x12, 3x8, 4x6