Garage Roof Joist Spacing

For pitched roofs flat roofs and ceiling joists.

Garage roof joist spacing.

The full version allows any size. Surveyors and structural engineers utilise data from tables below to help calculate the correct size strength and centres of roof timbers for the required spans and loadings. Continuing on from part 3. 1 enter joist details 1 1 span and joist spacing.

Builders aren t bound by standard rafter spacing measurements. If this is the case with your structure use the floor joist table to determine maximum joist length load. Interior spaces that exceed standard sizes such as family rooms and garages require different dimensions in the size of the joist the joist spacing and the joist span. But they do tend to space rafters in one of several industry standard increments typically.

Let s consider a basic gable wood roof framing design. Joist span tables use these tables to determine lengths sizes and spacing of ceiling joists. Here we have a wood framed gable roof. This is the distance between joist centres.

Floor beam span tables of residential structural design we will now look at roof rafter and beam design. Rafter and roof joist spacing is only one part of a complex roof design that works together to form a structure that meets building codes and can hold up the weight of the roof and roof load. This demo version is fixed at 1m clear span. The image below shows a cross section of our simple 12 x 13 house from the joist span tables section of this tutorial.

Flat roof joist calculator. Surveyors span tables for designing roof rafters.