Roof Truss Span Tables Uk

Trada eurocode 5 span tables 3rd edition bs 8103 3 7 2 3 design of pitched roofs the sizing and spacing of members shall ensure structural stability and provide restraint to the structure without undue movement or distortion.

Roof truss span tables uk. Pitched roof timber sizes. Design manufacture and nationwide supply of bespoke roof trusses and metal web floor joists for over 25 years. The same thing is true for the bridge of the truss. Check out the benefits of roof trusses and find a licensed mitek fabricator.

Alpine truss designs are engineered to meet specific span configuration and load conditions. Surveyors span tables for designing roof rafters. These steel joints are needed to support the overall truss. Use these two tables for roof rafters with a slope greater than 3 in 12.

Dark lane via norley road frodsham cheshire wa6 8bp. The above spans are based on american softwood lumber standard sizes. 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. Finally the truss calculator will compute the best dimensional method to connect the pieces of the truss with steel joints and a bridge.

Rafter span tables use these two tables for roof rafters with a slope of 3 in 12 or less. For pitched roofs flat roofs and ceiling joists. All the figures are based on roofing tiles or slates laid on timber laths over sarking felt. The shapes and spans shown here represent only a fraction of the millions of designs produced by alpine engineers.

Posi rafters posi rafters combine the lightness of timber and strength of posi strut steel webs to provide a quality roof system that can span further than alternative timber products. The more complex the truss framework is the greater quantity of these joints will be required. The following tables give details of the allowable spans and spacing for some of the more common timber sizes used in traditional roofing construction.