In order to find the right stair stringer layout for your stairs, you first need to measure the exact height of the deck from the top of the decking to the location where the stairs are going to land on the ground. you can input this number into our stairs calculator on decks . the calculator will provide you with the number of stairs, riser. Hold the connector under the stringer and raise the stringer to the proper height. then, mark the height of the connector. repeat for each stringer attachment. use 10d 1.5" hot dipped galvanized nails. make sure the top of the stringers are level. nail the stair stringer connectors into place. then, nail the 2x12 stair stringers to the.
Plumb the 2×4. standing on a stepladder if necessary, put a line level on a chalkline and stretch the line taut between the top of the stair header and the 2×4. level the line and mark this point on the 2×4. measure from the bottom of the 2×4 to the mark. add in the thickness of your decking material to find your total rise. Align the rise and run measurements on the square with the edge of the stringer. this will establish the starting point for the stringer. trace out the unit rise and unit run as shown by the measurements on the square. extend the horizontal line across the 2x12. finish off by extending the vertical line down to the edge of the board. Check your local building codes for allowable rise and run. use the calculator to add your deck’s measurements for: 5total rise (height from the top of your deck to the ground at the bottom end of the stringer or the total run) 6step run (horizontal tread depth) for each stair. 7tread type (whether you’ll use a single board or two smaller. Screw a 2×6 the width of the stringers to the backside of the stringers with two deck screws into each board. screw two upright treated 2x6s to the backside of the rim and into the horizontal 2×6 with four deck screws into the rim and four more into the 2×6. family handyman. step 13.
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