Technical information Crab range

C r a b t o u r : s p e c i a l a s s e m b l i e s Crossing over 500 crosshead Bridging Crossings can easily be made by fitting shorter extensions than the towers of the main shoring structure. Just terminate the towers with adjustable heads + crossheads or forms that will receive independent crossheads. Crossing over 850 crosshead Crossing beam (HEB) Crabtour crosshead Primary Poutralu-type girders Secondary wood-type girders Truss beam equipped with a round centring bar OR 137 Decks between towers For heights over 3.00 m, there must be a deck between the towers for assembling and removing formwork. It is made with Multicrab ledgers and Panacier . The decks must be laid in alternate directions to avoid overloading the ledgers. Load spreading Selecting the load-bearing ledger for a distributed load of 200 kg/m ² Support Length of bearing ledger 100 150 200 250 300 70 M M M M M 100 M M M M M 150 M M M M M 200 M M M MR MR 250 M MR MR MR MR 300 MR MR MR MR MR M: ledger MR: reinforced ledger Section width Bracket Description (cm) (cm) 70 100 150 200 250 300 38 100 20 cm Panacier - - 1 2 - 1 - - 30 cm Panacier 2 3 4 5 8 9 1 3 MDS guardrail The MDS guardrail secures the periphery of the deck between each tower. Laying decking between towers Fit the ledgers and the decks. In the absence of a peripheral wall, fit an MDS guardrail. Fit the frames. Move the access decks and Panaciers. Fit the adjustable heads and access to decking if required. 01.11.17 T e c h n i c a l i n f o r m a t i o n