Roof Dead Load Tables Uk

Click on a span to generate a full calculation you can adjust the exact span.

Roof dead load tables uk. Dead loads kn m2 excluding self weight of joist more than 0 75 but not more 1 00 kn m2 2 40m. Surveyors span tables for designing roof rafters. 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. The following table provides typical weights dead load self weight for various roofing materials where possible the values were taken directly from manufacturer technical data sheets and are the actual weights of specific representative products.

You need to measure the complete span of your floor joists together with the distance between them the centres and the size of the timbers. Dead loads kn m2 excluding self weight of joist 150. Typical design dead loads 3 dead load adjustments adjustments are made in the dis tribution of dead loads due to the placement of utility lines under the floor system and fixtures lightsfloor system and fixtures lights ducts etc on the floor ceiling which is the floor for the next story if. Standard loads of materials.

To put this in context max permissible clear spans for joists for flat roofs with unlimited access imposed load 1 50 kn m2. Uk site usa site. These spans were calculated using our flat roof joist calculation. Typical design dead loads 2 table 1.

This should be compared to the table. For pitched roofs flat roofs and ceiling joists. This table is for a dead load of more than 0 25 but not more than 0 50 and allows for an imposed loading of no more than 1 5 kn sq m. D dead load l live load l r live roof load w wind load s snow load e earthquake load r rainwater load or ice water load t effect of material temperature h hydraulic loads from soil f hydraulic loads from fluids.

Schedule of permanent loads commonly found in residential properties. The values for dead loads in table 3 2 are for commonly used materials and constructions in light frame residential buildings. This span table is to the format and methodology given in bs 5268 7 2. Pitched roof measured on slope clay tiles plain.

Strength class c16 service class 1 or 2. Arch 331 note set 13 1 s2014abn 2. Find the column for your dead load and spacing and the row for your timber size to find the permissible clear span in metres. Steelbeamcalculator co uk has a shopper approved rating of 4 7 5 based on 1181 ratings and reviews.