18 Steps Stair stringer is a set of 3 stringers, 3 of 6 steps article 1001312359 (model 13906) and 2 stairs stringers connectors article 1001312361 (model 13920) allows the construction of a solid and durable 18 steps staircase. A wooden support (4 in x 4 in) is required, not included. Once assembled this stair stringer is ready to receive steps in steel, fiberglass, wood (use 2 x 2 in x 6 in boards or 1 x 2 in x 12 in board), etc. Lightweight and easy to handle, it sets up quickly and easily. The stair stringer is powder coated paint offering excellent rust resistance. Ideal for a 142 ½-in high structure, it is also suitable for a structure between 139 in and 146 in high. The stair stringer allows for the installation of a 11 in deep steps. Maximum spacing between stringers: 54-in for residential project. Please contact manufacturer for commercials projects. Allowable load of 100 lbs per square foot and ultimate load of 144 lbs per square foot.
For an elevation of 142 1/2-in from top of the deck to the landing
Admissible load 100 lbs per square foot, ultimate load 144 lbs per square foot
Allows installation of 11 in deep Treads
Allows several Treads finishes: steel, wood, fiberglass, etc.