Keep in mind that these tables are for estimations only.
Flat roof steel truss span tables.
Roof truss span tables alpine engineered products 15 top chord 2x4 2x6 2x6 2x4 2x6 2x6 2x4 2x6 2x6 2x4 2x6 2x6.
Flat roof span tables allow for a maximum roof pitch of 5ยบ.
Roof pitch use recommended minimum roof pitches as specified by roof sheet supplier.
Included are a series of representative roof truss span tables that will give you an idea of the truss spans available for a particular load condition load duration lumber type and truss configuration.
Roof rafter span use this table to determine the maximum lengths of roof rafters based on species and grade of lumber spacing dimensions load and slope.
Intermediate bearing simple span trusses header beam pocket floor truss supporting header beam.
Roof truss span chart.
Table 9 1 in span tables for joists and rafters figure 5 gives a required compression value of 237 psi for a span of 16 feet and bearing length of 1 5 inches.
You can use sbca s span charts to roughly determine truss sizes available.
Floor joist span use this table to determine the maximum lengths of floor joists based on species of lumber joist spacing and joist size.
Metal plate connected wood trusses hib 91 by permission of truss plate institute inc.
Span tables for flat roof joists to bs 5268 7 2 imposed loads of 0 75 kn m for maintenance and snow load are applicable where there is no permanent access no fixed ladder or staircase and most areas where the altitude does not exceed 100 metres refer to bs 6399 3.
The load span tables shown below demonstrate only a tiny subset of the possible combinations available with trussteel cfs roof trusses.
The tables below give maximum spans for rafters and beams.
These steel joints are needed to support the overall truss.
In areas with mild climates patio roofs are generally designed for loads of 30 psf pounds per square foot.
05425 cold formed steel trusses roof truss spans every trussteel roof truss is a custom design based upon the unique load span bearing use and code criteria of a particular project.
Roof floor truss manual 7 31 08 10 43 am page 11.
The figures are based on quality materials.
The tables permit a bearing length of up to 3 5 inches but since 1 5 is probably the worst case that you ll encounter for joist or rafter bearing it s a safe value.
The more complex the truss framework is the greater quantity of these joints will be required.
Flat the most economical flat truss for a roof is provided when the depth of the truss in inches is approximately equal to 7 of the span in inches.
Posts these span tables are designed for a minimum post size of 50 x 50 x 2 5mm up to a maximum height of 3 0m.
