Coltman floor and roof slabs comprise hollow and solid concrete units, nominally 1200mm wide and of various depths placed side by side with a grouted joint.

These provide our customers with a quick form of construction, enabling the principal contractor to progress in most cases to the next level of construction within a day of the floor units being installed, saving time and money.

Layout drawings are prepared for use during site erection by Coltman fixing gang or by others employed by the principal contractor.

>>> Prestressed flooring and roofing technical information

Unit Cross Section Depth and Self Weights

Structural design is in accordance with the recommendations of BS 8110 "The Structural Use of Concrete".

The standard Coltman floor unit is designed for a mild exposure condition as defined in BS8110, other expose conditions can be considered subject to consultation with the Coltman Technical Department.

The standard Coltman floor unit is designed to meet Class 3 serviceability requirements as described in BS 8110. Designs to Class 1 and Class 2 are available if required

The maximum permissible spans are dependant on loading conditions.