How to cut stringers on 45 degree corner the flat parts are only to screw the decking into the stair front is 7 and can support the load. The next step is determining the tread and riser locations for the cleats if you go with closed stringers or for the sawcuts if you go with open stringers.
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How do i calculate the three treads.
45 degree stair stringer. I have a feeling the. Like the ones below. Draw lines on both angled stringers for each tread.
The straight cuts i did on the miter saw. You can achieve this if you build a staircase with a 75 inch riser and a 10 inch tread. Just wondering how you guys cut your stair treads with the 45 degree returns.
How to i compute the center tread where they are converging. Converging steps 45 degree angle i know the angle is 225 and i have a construction master iv calc. I mess with trig and used to be pretty good at it but anymore if i have to chance to just measure in place i do it.
For example if you were crazy and built a staircase with a 12 inch tread and riser then the angle of the stringer to the floor would be 45 degrees. I would probably cut the straight run stringers and put the 45 degree double stringer in place temporarily and use a long level or other straight piece to transfer the notches to the 45 degree double stringer. Lay a straightedge across each tread cut of the three regular stringers and extend it over to the angled stringers.
I know the rise is 65 inch and my tread is 11 inch and i need a total of 4 risers and three treads. I had a bunch to make and the only way i thought to make the 45s consistant in angle and length was to make a quick jig. The ends are resting on a sandwiched 2nd stringer cut to take the weight.
A more common angle is about 37 degrees. Pointman from applied research associates ascends and descends the 45 degree stairs at the umass lowell nerve center. The stringers are made of poplarthe treads are oak.
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