This standard specifies the requirements for materials, dimensions, reinforcement, manufacture, finishing, and testing of precast reinforced concrete door, window, and ventilator frames. It provides standard dimensions and reinforcement details for various frame profiles.
Precast Reinforced Concrete Door and Window Frames
Quick Reference Values
Minimum grade of concreteM15
Maximum nominal size of aggregate10 mm
Minimum cover to reinforcement15 mm
Tolerance on cross-sectional dimensions± 3 mm
Tolerance on overall length± 5 mm
Minimum curing period (wet)7 days
Practical Notes
Ensure frames are handled carefully to avoid chipping at edges and corners as they can be brittle.
Verify that the inserts for hinges, holdfasts, and other fixtures are properly aligned and securely cast in place before installation.
The smooth finish required by the code is critical for aesthetics and for proper sealing with paint or other finishes.