Table of Contents
How long can a beam span without support?
A 2×10 beam – made up of two 2x10s nailed together – can span up to 11′ without support beneath a deck that is 4′ wide. For a more normal-sized deck, the same beam can span 8′, supporting a deck that is 8′ wide. You can also triple a 2×10 beam.
What size lumber can span 16 feet?
Max. Live Load 30 lbs/ft2 (1436 N/m2)
| Maximum Span (ft – in) | ||
|---|---|---|
| Nominal Size (inches) | Joist Spacing Center to Center (inches) | Lumber Grade |
| 2 x 6 | 24 | 9′ – 11″ |
| 2 x 8 | 12 | 16′ – 6″ |
| 16 | 15′ – 0″ |
What size lumber can span 13 feet?
A 2×6 spaced 16 inches apart can span a maximum distance of 13 feet 5 inches when used as a rafter, 10 feet 9 inches when used as a joist, and 6 feet 11 inches when used as a deck beam to support joists with a 6-foot span.
How do you calculate the effective span of a simply supported beam?
Detailed Solution. The effective span for a simply supported slab is equal to the clear span between the supports (i.e. the length up to the face of support) plus effective depth or width of the slab.
What should be the effective span of beam?
For Continuous beam For end span with one end free and the other continuous, the effective span is equal to the clear span + half the effective depth of the beam or the clear span + half the width of the discontinuous supports, whichever is less.
What are the regulations for the design of long span beams?
The design of long span steel and (steel-concrete) composite beams is generally carried out in accordance with BS 5950, BS EN 1993 or BS EN 1994. For some types of beam this codified guidance is complemented by specific design guidance, such as that on the design of beams with large web openings (see SCI P355 ), or manufacturers’ information.
How do you reinforce a beam with steel?
Another way to reinforce a beam is with a flitch plate. In this method, a steel plate is sandwiched between two identical wooden beams and the beam-and-steel sandwich is bolted together. The steel plate should be as long as the beam, with bolt holes punched or drilled through the steel.
How far apart should end bolts be on a beam?
The end bolts should be 2 inches in from the beam’s end. The bolts are staggered along the beam with one bolt near the top and the next near the bottom. This method transfers the load from the wooden members to the steel plate through the bolts and friction between the steel and the wood.
How do you cut a beam to length?
An inch-wide slot is cut down the length of the beam, with the depth of the cut approximately three-fourths the depth of the beam. Structural epoxy resin is poured into the cut, a high-tensile steel reinforcing bar is laid down, more epoxy is poured, and another bar is laid down until the slot is filled.