Steel Formwork for Culverts (Standard)

Inner steel forms for cast-in-place concrete culverts are available for every possible shape and cross section such as rectangular, circular, egg shape and horse shoe. The steel forms are manufactured in segments of 1500 or 3000 mm length and connected together by screws or wedge pins to a total length of up to 30 m, depending on the distance of the construction joint and the required concreting performance.

Each formwork segment has only one spindle or hydraulic cylinder to simultaneously retract the steel form in horizontal and vertical direction and is supported by a small wheel carriage travelling on the finished concrete base.
For making the base in the required shape we supply special base forms which are either travelling by wheels on the concrete blinding or mounted to wheel suspensions fixed to the shoring system.

The outer steel forms are also travelling on wheels and are connected together by spindles or thread bars. Special front forms with guides for the water stop (joint tape) are fixed to the inner and outer form by wedge pins.

One standard formwork for culverts consists of:
Inner steel form, outer steel form, base formwork (if required), front form and sealing rails.
Options are hydraulic adjustment cylinders and pneumatic surface vibrators with control valves.

Advantages:

• Custom made design for optimised flow conditions.
• Smooth and pore-free concrete surface.
• Unmatched concreting performance with less personnel.
• No other formwork can be moved faster to the new pouring position – guaranteed!
• Outstanding durability and less cost for maintenance.
• Slim design of outer forms reduces excavation width.