2/27/2024 0 Comments MIRC 7.75 for android instalThe clearance area shown in figure R307.1 is 21". A shower or tub equipped with a showerhead shall have a minimum ceiling height of 6 feet 8 inches (2032 mm) above a minimum area 30 inches (762 mm) by 30 inches (762 mm) at the showerhead. The ceiling height above fixtures shall be such that the fixture is capable of being used for its intended purpose. Bathrooms shall have a minimum ceiling height of 6 feet 8 inches (2032 mm) at the center of the front clearance area for fixtures as shown in Figure R307.1. I think the headroom that we were using before is most comfortable, but the code actually allows for less due to how it says to measure the 80" (6'-8")Ģ. The exact wording in the IRC is not something I have paid attention to on this point because I have never tried to fit this into such a tight space, and have always been able to change the floor plans to include what is desired in better ways when starting from scratch. Something jumped out at me today that changes this a little bit. BUT, I would add 24" so that you could have more comfortable stairs. Without checking Nugent's math, I would say that you need the extra 15" if you want a 9'ceiling, regardless of the powder room, but then you could probably do both. Some of that could be hidden in the floor joists above the hallway, but that probably would mess up the upstairs floor plan. You are only showing about 135" which is about 15" short of what you need. Here are code minimums for stairs.ġ21" ÷ 7.75 = 15.46 or 16 risers and 15 treadsġ5 treads × 10" = 150" for total stair run. In other words, what type of floor joists/trusses are you using and how much height will that add to the 9'? It could be 10'-1" total rise or as much as 11'-2". To figure out the actual room under the stairs, we need to know the elevation difference from floor to floor.
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