Technical information Crab range

Mobile scaffolding 4 5 For a structure not exposed to wind and without brackets , we recommend you apply the following rule: height H of the highest deck is less than 3.5 times the smallest dimension of its base l. h < 3.5 and l ≥ 1 m (NF EN 1004) l For a structure exposed to wind , do not use the mobile structure in winds exceeding 45 km/h (NF EN 1004). In stronger winds, the structure must be moored or dismantled. The standards must be bolted together. For a structure with brackets , a case study with design notes must be produced in order to ensure the mobile structure cannot tip over. Site environment Examine the site and look for any risks that may impede the movement of the mobile scaffolding: • nature of the ground and gradient, • any obstruction at ground level or in the air, • wind, if used outdoors. Preparing the ground The wheels of mobile scaffolds as a matter of principle have a very small bearing surface on the ground. So it is essential in many cases to lay a track; this will also facilitate movements. It can for instance be made of UPN rails chose according to the width of the wheels. In order to prevent the scaffolding tipping over, never apply horizontal loads greater than the admissible loads: 1 - The use of brackets is generally incompatible with the equipment's own stability, 2 - Never pull cables from the platform. 3 - Never move mobile scaffolding with anyone on one of the decks or exerting force on the construction from the upper part. 4 - It is essential to check whether, on the path of the scaffolding, there are any obstacles, hoppers, big differences in height etc., likely to unbalance it. 5 - Avoid moving mobile scaffolding on a slope. 6 - Mobile scaffolding is not designed to take canvas covers or nets. 7 - Never create a “bridge” between the mobile scaffolding and a building. 8 - Large mobile scaffolding can only travel in one direction. Dismantling Before dismantling, make sure the wheels are braked, the stabilizers tightened and proceed in reverse erecting order. Recommendations Recommendations for use • Fir the 4 x 2.00 m standards. • Repeat step 3 to 5 not forgetting the 3 rd rail opposite the access. • Access the top level then fit the toeboards to complete the assembly. • Dismantle the temporary decks from the ground. • Fit a horizontal wind brace with tube and couplers at the base of the mobile scaffolding. • Inspect the scaffold and put the inspection report in the pocket on the “no entry” sign. 7 8 Uprights must be double bolted. 01.11.17 T e c h n i c a l i n f o r m a t i o n