How far can a triple 2×6, 2×8, 2×10 and 2×12 beam span | how far can a triple 2×6 deck beam span | how far can a triple 2×8 beam span | how far can a triple 2×10 beam span | how far can a triple 2×12 deck beam span.
There are many species of wood/ timber or dimensional lumber used in house construction as wood frame structure. It is used as floor joist, deck beam ceiling joist, pitch roof rafter, flat roof rafter, purlin and Binder.
There are different depth of deck beam made of timber are used in floor construction such as 2×6, 2×8, 2×10 and 2×12 etc made of different species of wood (southern yellow pine & Douglas fir) and different grade such as grade – 1, grade – 2, grade – 3. Southern yellow pine is strongest species of wood that can span more distance compared to other species of wood. Grade 1 lumber have higher strength than other grade Lumber due to fewer knots.
A triple 2×6 are made when three 2×6 beam are nailed together, a triple 2×8 are made when three 2×8 beam are nailed together, a triple 2×10 are made when three 2×10 beam are nailed together and a triple 2×12 are made when three 2×12 beam are nailed together.
Deck beam provides structural support to floor joists can be define as several small beams. Floor joists are typically a horizontal structural member that runs across an open space of building on supporting wall or studs. Their function is similar as beams, except floor joists are supported by wall, foundations, or beams framing.
Beam carries the load and transfer the dead load of the subfloor and floor finishes and live load of people, furniture and furnishings to walls, headers, or foundation walls. It is like the skeleton/ framing of a building that supports the load which the floor is built to bear. Joists are technically beams that typically spans relatively short distances compared to beams and are made of wood, steel, or engineered wood or lumber.
The longer the joist, the more area of deck the joist supports, and thus the beam supports. For pressure-preservative-treated southern pine no. 2 grade, there is a method that can be used for estimating beam spans for a preliminary design.
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How far can a triple 2×6, 2×8, 2×10 and 2×12 beam span
How far can a triple 2×6 beam span:- as per general rules and guidelines, #2 grade southern pine of a triple 2×6 deck beam can span upto 8 feet when total load of 50 psf (40 psf live load + 10 psf dead load) with deflection limit L/360.
How far can a triple 2×8 beam span
as per general rules and guidelines, #2 grade southern pine of a triple 2×8 deck beam can span upto 10 to 11 feet when total load of 50 psf (40 psf live load + 10 psf dead load) with deflection limit L/360.
How far can a triple 2×10 beam span
as per general rules and guidelines, #2 grade southern pine of a triple 2×10 deck beam can span upto 12 to 13 feet when total load of 50 psf (40 psf live load + 10 psf dead load) with deflection limit L/360.
How far can a triple 2×12 beam span
as per general rules and guidelines, #2 grade southern pine of a triple 2×12 deck beam can span upto 15 feet when total load of 50 psf (40 psf live load + 10 psf dead load) with deflection limit L/360.
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Conclusion:-
As per general rules and guidelines, #2 grade southern pine of a triple 2×6 deck beam can span upto 8 feet, (3) 2×10 can span 13 feet, (3) 2×8 can span 11 feet and (3) 2×12 can span 15 feet.
