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Simpson has determined that it is appropriate to revise these values. Installations built in accordance with prior published load
values will still achieve the prior published allowable load due to the factor of safety used in the original load values.- Allowable load must be the lesser of the concrete or rod strength.
- The allowable loads based on concrete strength are based on a factor of safety of 4.0.
- Allowable loads may not be increased for short-term loading due to wind or seismic forces.
- Anchors may be installed off-center in the flute, up to 1" from the edge of flute.
- Shear loads shall be applied flush with metal deck surface.
- Deck shall be 20-gauge minimum.
- Mechanical and plumbing design codes may prescribe lower allowable loads. Verify with local codes.
Typical Metal Deck Installation
