Roof Deck Design Height Limit

From the typical 1 to 3 roof and composite floor deck to concrete form deck to long spanning deep deck profiles asc steel deck s extensive product offer meets the needs of the most complex conditions and demands for structural performance and design.

Roof deck design height limit.

If located on a corner lot the structure must be situated in the half of the lot furthest from the side street. 2x10 to 15 feet and 2x12 to 18 feet. 34 minimum stair rail height from nosing to top of rail. Roofs are under a lot of pressure.

200 lb concentrated load. Internachi is more conservative in its recommendations which specify that posts should be no taller than 12 feet unless cross bracing is used between posts. 36 minimum height when surface is 30 above grade. 50 lbf vertical and horizontal load along top rail.

4 maximum gap between deck and underside of bottom rail. If bracing is used a maximum post. 50 lb concentrated load over 1 sqft or balusters. Load limits on the roof of a building.

In typical deck construction with a ledger on one side of the joist and beam on the other the size of the joists is driven by the size of the deck and based on the general maximum spans mentioned above. A 2x8 up to 12 feet. Stair rails on decks should be between 34 inches and 38 inches high measured vertically from the nose of the tread to the top of the rail. The larger the deck the larger the joists.

If in one 100 year floodplain the structure must be firmly anchored. The code has some very specific requirements for deck stairs. There is a height limitation of 15 feet. The dca6 recommends minimum 6x6 posts with a maximum 12 foot height.

Treads must be at least 10 inches deep measuring from front to back. Good for short span conditions for use when metal deck is used as a leave in place form composite deck 3 inch depth 32 inch coverage 11 foot to 15 foot optimal span range pan perforated acustadek option available with smooth series rivet attachments or welded.