According to International Building Code (IBC), the maximum riser height is 7-3/4. Measure the height of the stair from the bottom of the decking — or top of the floor joist — to the ground and then divide by the 7-to-8 inches (175-to- 200 mm). Manual Calculator ( use for building stairs on uneven ground or for non-standard step dimensions ).
I’ve been building stairs inside homes and on decks for almost 30 years. Since the AWC develops the standards for wood frame construction that the IRC is based on, most building officials will accept the DCA 6 criteria as an alternative to the IRC. To determine the length your staircase will extend into the yard, multiply the number of steps by the depth of steps. The standard depth for stair treads is 10. This spreadsheet calculates all the necessary dimensions for stair stringers, and lets you print out a diagram and list of points that can be transferred to the stringer stock with a tape measure and marker.
Stair Dimensions for Straight Stairway Runs: Stair width, landing length. Bad Deck Stair Example: Nothing is right about the exterior stairs shown in our photo from a 1991 home inspection:. Note: this code establishes minimum occupational safety & health standards that apply to all places of employment in California. Unsafe Deck, Deck Stairs & Deck & Stair Railing Example. Fortunately no rot was found in the deck, only in the steps, which were demolished anyway. Handrails must be at least 1000mm in height from the deck with no gaps greater than 100mm.
Building And Installing Deck Stairs
Decking Steps – B&Q for all your home and garden supplies and advice on all the latest DIY trends. Add Softwood 3 Step Riser, (W)220mm (D)40mm to Compare list (max 4). If you’d prefer a solid stairway to an open stair, you can fill in the gaps with joist off-cuts or deck boards. Measure the height and depth of the gap, then screw the timber into the step riser with two screws at either end. UK Building Regulations state that stairs and balustrades should be designed and installed for the safe movement in or about buildings, and while timber decks for residential installation are not explicitly referenced, it can be assumed that they do apply, especially with regard to balustrades. For low-level residential decks the balustrade should be set at a minimum height of 900mm on both stairs and landings and resist a minimum horizontal uniformly distributed line load of 0. British Standards relevant to using wood externally that have relevance to designing and constructing decks and external balustrades include:. When building steps, it is essential to build every step the same height as the others to prevent tripping. A standard stair is 10 by 8, or approximately ten inches wide and eight inches tall.