![]() ![]() This is where your stair should be laid out from, as the rise and run is different from inside stringer to outside stringer. At that point you have to have a minimum nominal measurement on tread depth to meet code. "Line of travel" or "datum line" is that area 12" in from the inner radius on the inside of the tread you have to comply with code. You can also find a great visual interpretation of the SMA website,. Please review your local codes and/or review a copy of the International Code Councils – IBC or IRC (residential version) - Building Code. This geometry is very comfortable regardless of your tread size.ĪWI isn’t a good source of stair-building specifications, but rather a great resource for acceptable tolerances. This measurement is exclusive of the nosing. If you want this to go smoothly, get out your water level.Īssuming this is a residential structure, a good rule of thumb to use is (2 Rise + 1 Tread) = 24 to 25 inches. Dropping a tape straight down from the landing, or going off of the plans, are recipes for disaster. For this reason, you have not yet determined your total rise. ![]() Line of travel is 12" in from the inside radius.Īssuming the total run length can be whatever you want indicates that you haven't laid this out, and do not know where it will actually start. ![]() Your run at the line of travel is what's important. There are some building codes concerning the width of the stair at the minor radius, but this may not apply to your layout. I think that it is better to go above the 7" figure, rather than below it, because smaller rises start to feel funny. In the case of a curved stair, I would try to figure the 10 inch run in the "walk line" of the treads, and find a number near 7" that divides evenly into your total rise. The general rule of thumb (or is it toe?), for stairs is to try to get close to a 7/10 layout 7 inches of rise, and 10 inches of run. Assuming the total run length can be what I want, what is the ideal rise and run for such an animal? AWI gives minimum allowable sizes, but I want to know what feels best. The inside radius would be about 7’ and the treads will be about 4 feet wide. I need some help configuring a set of curved stairs. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |