Printed from: https://conservationhandbooks.com/footpaths/boardwalks-and-bridges/procedures/
Safety Bridge building is potentially dangerous, because of having to handle heavy and bulky main beams. The safest way is to use lifting plant such as a lorry-mounted crane, but many sites will not have suitable access. Below are some methods of moving and positioning main beams without using machinery. A 6m timber beam weighs...