About 5metres(16') but would have to be stress graded timber.
too many variables here, mostly the size of the roof above it (steepness, weight of shingles, tile or slate? etc. You're best to overengineer it. A double thickness (3.5" X 12" or 16" wide) glulam will support a reasonably large roof above it, otherwise a simple double 2x12 would work for a 3/12 -6/12 pitch roof with light grade 30 year shingles.
If I am reading the question correctly, a load bearing wall was removed and replaced with a beam? Clear span, no post in the middle? If cracks are appearing, the beam that was used was not big enough. For any space of 8 feet or more, 2x12 and plywood should be used for the beam or an engineered truss used.
The maximum allowable span for a 2x12 floor joist is typically around 18 feet, but this can vary depending on factors such as the wood species and the load it needs to support. It's important to consult local building codes or a structural engineer for specific guidance.
The 2x12 span chart provides information on the maximum allowable span for a 2x12 lumber based on the load it will support.
The maximum span of a 2x12 lumber depends on several factors, including the wood species, load conditions, and whether it is used as a floor joist or beam. Generally, for standard residential applications with a uniform load, a 2x12 can span approximately 12 to 16 feet. However, it's crucial to consult local building codes and a structural engineer for specific requirements and safety considerations.
Triple? That sounds an awful lot like gluelam... Which requires engineer approval to meet code. The inspecting engineer will be able to tell you.
The maximum span for a 2x12 beam depends on various factors, including the type of wood, load conditions, and whether it's used for floor joists or beams. Generally, a 2x12 can span approximately 16 to 20 feet for residential floor joists, assuming a typical load of 40 pounds per square foot. For heavier loads or different wood types, it's crucial to consult local building codes or a structural engineer for precise calculations.
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.
The maximum span for a double 2x12 beam made of pine can vary depending on factors such as load requirements, local building codes, and spacing of supports. Generally, for residential applications, a double 2x12 can span approximately 12 to 16 feet when used as a beam. However, it's crucial to consult local building codes and a structural engineer for specific requirements and load calculations.
It depends on its moister content.
Depends on the area above the ceiling joists. Is it a live load (living space) or dead load (just the joists with maybe an attic above)? Also, the length of the ceiling joists from the last bearing point is a factor. How much weight is bearing on the beam is the critical issue.
The size of wood used for floor joists typically ranges from 2x8 to 2x12 inches, depending on the span and load requirements of the floor.
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.
2x12 lumber is commonly used in construction projects for structural framing, such as floor joists, roof rafters, and stair stringers. It is also used for building large beams and headers to support heavy loads in buildings.