Roof Timber Sizes Uk

Structural calculations for timber joists timber beams glulam beams flitch beams using the latest design codes.

Roof timber sizes uk.

Should refer to trada document span tables for solid timber members in floors ceilings and roofs excluding trussed rafter roofs for dwellings or ask your lbc surveyor for advice. Most independent timber merchants in the uk will offer a range of both sawn and planed timber. 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. 1 2 timber strength class and joist size automatically calculate sizes suitable for supporting the loads below c16 cost effective for most applications c24 stronger more demanding c14 c18 c22 c27 c30 c35 c40.

Imposed loads roof snow load and short term point load altitude not exceeding 100m. The following tables give details of the allowable spans and spacing for some of the more common timber sizes used in traditional roofing construction. Surveyors span tables for designing roof rafters. Suitable for uk building regulation approval.

Imposed loads of 1 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. C16 timber is commonly used in floor and roof joists for internal building work. It s often chosen as the standard timber for roof extensions or joist refurbishment as it s the most cost effective internal structural timber. For pitched roofs flat roofs and ceiling joists.

Care needs to be taken in understanding the sizes stated some are stated in sawn sizes and others in finished ie planed. Order now for mega savings and fast uk delivery on timber supplies. High quality timber supplies for virtually any construction project. Compliment our range we stock batten firrings arris rail and a range of treated timbers in various sizes and can quickly source and supply any of your timber requirements.

Uk roofing and plastic supplies carefully select our partners to ensure that we only supply the highest quality timbers. 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. All the figures are based on roofing tiles or slates laid on timber laths over sarking felt. Including osb plywood and chipboard for flooring roofing and other structural applications.