Technical information Crab range

7 3 H é l i c r a b s p i r a l s t a i r c a s e Before lifting a tower, use ties to attach the adjustable baseplates. The tower weight for lifting should not exceed 3.6 t. Contact our design office before lifting larger towers. Comply with the general rules for handling and stability Part number Description Weight (kg 198949-0 Tie for adjustable baseplate 0.50 023641-4 Ø 49 tube lifting ring 2.15 Lifting ring WLL*: 1.8 t. * Working load limit • Place the adjustable baseplate and fit the basic standards and ledgers. • Level, then fit 2.00 m uprights, Panacier, MDS guard rails, step flights and erection deck 1.00 m up. • Fit an erection platform to the existing staircase. • Fit a ledger at 1.00 m and two and three step flights. • Vertical tube diagonal holding the central post using 2 two bolt adjustable couplers. • The lifting rings to each standard should be as close as possible to the ledger nodes. • Horizontal tube and coupler diagonal brace using 2 right angle, four bolt couplers below the lifting rings. • Lift pre-assembled section into place and fit the standards on the existing staircase. • Remove the vertical diagonal tube attached to the central post. • Remove the horizontal tube and the lifting rings. • Fit the anchor ties at 8.00 m. • Fit the missing 1.72 m diagonals used as guardrails. • Complete the exit following steps 9 to 11. • Fit a tube and coupler diagonal brace holding the central post using 2 two bolt adjustable couplers. • Standing on the erection deck, assemble the section to be lifted into place following steps 6 and 7. • Fit lifting rings at the 4 corners as close as possible to the ledger nodes. • Fit a horizontal tube and coupler diagonal using 2 orthogonal couplers, four bolt couplers below the lifting rings. 1 2 3 4 5 6 Uprights must be double bolted Lifting 01.11.17 T e c h n i c a l i n f o r m a t i o n