Framing A Roof With A Lvl Ridge Beam

Let s consider a basic gable wood roof framing design.

Framing a roof with a lvl ridge beam.

It can be used in place of traditional lumber for greater consistency and design flexibility. Yes either a ridge board or a ridge beam is necessary and required by the building code where roof rafters meet at the the center of their span. Rafter to ridge beam connection framing roof ceiling construction structural ridge beam absolute deflection in a ridge beam structural ridge beam tricks of the trade. The ends of the beam must be supported as concentrated loads generally by posts inside walls or in the middle of a room.

The ridge board is installed to provide a bearing point where the rafters meet and it also helps with alignment along the ridge. Versa lam lvl size chart laminated beam span tables charts. The ridge is constructed as a beam that runs from end to end. Here we have a wood framed gable roof.

Lp solidstart lvl is a strong straight and durable framing product made for superior performance. A ridge board is a non structural member that serves as a prop for opposing rafters to rest against and connect to. Floor beam span tables of residential structural design we will now look at roof rafter and beam design. Tj 9510 installation guide for floor and roof framing with tji s31 s33 and s47 joists east canada.

Csg tjcan12 simpson connector guide for trus joist products. A structural ridge beam is a horizontal beam placed at the peak or ridge of a roof and is designed to carry much of the live and dead loads or weight of the roof structure by itself. Lp solidstart lvl 2900fb 2 0e is available in a range of depths and lengths and is available in standard thicknesses of 1 3 4 and 3 1 2. Framing with a ridge beam a roof with a ridge beam can be more easily understood if it s imagined to be a flat surface like a deck in plan view.

The 2900fb 2 0e lvl is also available in factory laminated thicknesses known as billet beam of 5 1 4 and 7 to eliminate the need for field nailing and or bolting of multiple plies. The difference between them is that a ridge beam is a structural member that bears half of the live and dead loads of the rafters on either side of it but a ridge board is not structural. Tj 9001 installation guide for floor and roof framing with tji 110 210 230 360 and 560 joists. The image below shows a cross section of our simple 12 x 13 house from the joist span tables section of this tutorial.

The loads on the ridge beam are carried by vertical posts at the beam ends down through the building structural walls to the building foundation. Ridge beams are required by code if the roof slope is less than 3 in 12 irc section r802 3. Ultrasonically graded veneers are arranged in specific patterns to maximize strength and stiffness. Continuing on from part 3.

Ridge beam sizing is based on the span of the beam between supports and the amount of roof load supported by the beam.