Technical information Crab range

2 3 W i n d b r a c i n g Wind bracing is a crucial factor for the general stability of the scaffolding. It is important to make sure that wind bracing is ensured in all three planes. Frequency should be determined according to the structural detailing and stresses the structure is subjected to. Façade with MDS guardrail 1 - wind bracing with bents Façade with guardrail, main and middle rail 2 - overall wind bracing Everyday uses: scaffolding for façades Longitudinal plane on street side 1 - Wind bracing with bents: the longitudinal diagonals should be placed one per floor every four spans. The lower scaffolding with five spans must have at least one diagonal per floor. 2 - overall wind bracing: the longitudinal diagonals should be placed every 3 spans. A stringer configuration of the diagonals is preferable so that they tension and compress. Horizontal plane • If all the levels are fully fitted with platform, they ensure horizontal wind bracing, otherwise place one horizontal diagonal in each grid section on each level every 4.00 m in height. These diagonals are made with tubes and couplers. Transverse plane • Stability in the transverse plane is provided by ties attached to the existing construction. Other uses When the scaffolding structure is not tied to the building (self- supporting or volume structures), you should design and put in place a specific wind bracing system that must be designed by a competent person, in accordance with best trade practice and the relevant regulations. Recommendations • Proper wind bracing suppresses unpleasant swaying and increases overall stability (fitting diagonals only requires a little more material and labour). • Prefer tensioning diagonals for better efficiency. The wind bracing diagonals must be fitted as assembly progresses, as soon as the floor is ready for them. 01.11.17 T e c h n i c a l i n f o r m a t i o n