Beam Span Awning 4x4

For pressure preservative treated southern pine no.

Beam span awning 4x4.

In general the maximum span for a 4 by 6 beam is 6 feet between 4 by 4 posts. Patio cover kits will include one of 7 different beam types. If you move up to 4 by 8 you re usually allowed to span up to 10 feet between posts. A 4 by 10 can usually span up to 12 feet between posts.

An essential part of planning a patio roof or gazebo project is determining the number size and spacing of rafters beams and posts according to the loads they will carry. In areas with mild climates patio roofs are generally designed for loads of 30 psf pounds per square foot. Maximum rafter spans for a patio roof. Refer to the deck beam span table below to assist in determining the maximum span of a given beam between posts.

Use the span tables below to determine allowable lengths of joists and rafters based on size and standard design loads. Obviously the larger the beam the greater the distance it can span between posts. Building codes for residential decks only require 40 psf. For heavy roofs or in.

The smallest beams for patio covers are typically 4 by 6. The longer the joist the more area of deck the joist supports and thus the beam supports. Beam span maximums are based on a maximum anticipated live load. A redwood 4x6 beam should span no more than 6 between supporting posts.

You can also use the wood beam calculator from the american wood council website to determine maximum rafter and joist lengths.