Hydraulic prison perimeter wall formwork

The perimeter wall of this prison is perfect for the use of a fully hydraulic and self-propelled formwork

• Length of the wall 970m’ (2 x 325m and 2 x 160m)
• Height of the wall including top sphere 6,4m
• Wall thickness 280mm
• Diameter top sphere 1m
• Standard length of pouring phase 14,7m
• Formwork made of 7 equal parts of 2,1m wide
• Accentuated joints with changing positions
• No tie-bars through the wall, only through the kicker and above the wall
• Concrete is pumped from below with self-compacting concrete
• Maximum deflection of 3mm over 6,4m height at a maximum concrete pressure of 160kN/m²
• Formwork is suspended from a portal frame which can be moved hydraulically
• Opening and closing of the formwork is carried out hydraulically
• Width of the foundation base is 2,5m, the portal frame carries over a length of more than 15m, hence the formwork can be opened sufficiently for cleaning purposes
• Height adjustment with jacks
• Portal frame and formwork can be converted to lower heights

The 4 outer corners are poured first using special corner pieces. After which the formwork is suspended in the portal frame to make the straight walls.