Design/ Slab openings
The openings can be classified in terms of the width measured perpendicular to the span of the Decking:
1- Up to 300 mm - No special treatment is required.
2- Between 300 and 700 mm wide - The additional reinforcement bars should be designed and added as necessary to spread the
Load latrelly around the opening. Supplement the slab strength immediately parallel to the opening. and control crack widths at corners.
3- over 700 mm wide – structural trimming steel should be added to the framing arrangement before the decking is installed.