Part 7 Roofs Chapter 7 - NHBC
Draughtstripping loft hatches and sealing holes for services, are given in Sitework clause 7.2 Vertical holding down straps should have minimum cross section dimensions of 30mm x 2.5mm. Batten lengths should be sufficient to span over not less than three consecutive supports. ... Access Content
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Hold the control levers all the way down. One crane is able to work one end of two adjacent hatches. They are more economical and weigh less. battening blocking shoring A situation has occurred where it becomes necessary for you to be towed. ... Access Full Source
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