This standard specifies the requirements for materials, dimensions, profiles, construction, and finishing of steel door frames made from plain carbon steel sheets for use in buildings.
Specifies materials, dimensions and fabrication of steel door frames for general building purposes.
Quick Reference Values
minimum sheet thickness1.25 mm (18 BG)
tolerance on overall dimensions± 2 mm
number of holdfasts3 per vertical jamb (minimum)
hinge recess depthTo suit 100 mm hinges
Practical Notes
The bottom base tie provided at the factory must not be removed until the frame is firmly grouted/embedded into the masonry or concrete during erection.
Ensure mortar guards are welded at hinge and lock strike plate locations to prevent wet mortar from filling these recesses and obstructing hardware installation.
Prior to delivery, frames must be painted with at least one coat of approved shop primer (such as red oxide zinc chromate) to prevent rust.