Ulma BMK-170, User Manual

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BMK CLIMBING BRACKETS
3.3. Instructions for the Climbing Bracket BMK system for the construction of hollow
piers
1. Lift the structure and position it in the indicated location.
2. Place the Base Plates and Push-Pull Props to plumb the formwork panel. Do not let go of the panel with the
crane until having anchored the formwork properly to the ground.
Position the anchor cones to support the climbing system in the next pouring stage according to the
indications in the assembly drawings.
3. Apply release agent and place steel reinforcement.
4. Position the inside formwork without platform and finish placing steel reinforcement. Before though, place the
anchor brackets into the panel for the support of the inside platform. Place the rest of the outside panels.
5. Place tie rods and proceed with concrete pouring.
6. Separate the panels from the wall by adjusting the push-pull props at a distance which allows assembling the
climbing rings to the cones from the concrete pouring platform. Remove the formwork and lower it to the
ground.
7. Set the platform into the pier shaft the way the gravity pawls snap into the box-outs. Lift the climbing brackets
and support them on the cones embedded in the concrete.
8. Assemble the outside panels onto the climbing brackets and the inside formwork onto the platform fixing it
with chains and levelling it.
9. Separate the outside panels from the wall to get sufficient working area to place the cones and anchor
brackets onto the inside formwork panel.
10. Clean the panels, apply release agent and place steel reinforcement.
11. Move the panels to the wall, plumb and level them. Check the cone positions by using topography techniques.
12. Place tie rods and proceed with concrete pouring.
13. Strip the wall by keeping the panels separated from it at an approximate distance of 30 cm to be able to
assemble the climbing rings to the cones from the concrete pouring platform.
14. Connect the cone recovery platform to the outside panels and move them up to the next climbing stage,
starting with the one with ladders. Once having reached the next climbing stage, tie the wind bracing cable.