Repairs: roofs and rainwater goods
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The size and fixing of the original purlins can be a hit and miss affair, so check the position and section sizes of the purlin (for example, against TRADA loading tables: Span tables for solid timber members in floors, ceilings and roofs for dwellings). Ideally, when installing new purlins and props, the...Explore the subscription options here to get full access to isurv, including downloads.
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