Narrow stairs make it more difficult to carry items up and down the stairs. general idea but cannot be used in every situation effectively. Rise Run Stringer Stairs Calculator; Rise Run Stringer Stairs Calculator. The number of stringers you need is a function of the width of the staircase and the tread material. Shop Stringers! So this basically sums up the basic code requirements for residential stairs and their dimensions. Because our stairs have a 10” depth, we will be installing two boards on each step that will run the entire 48” width. For a normal deck step, two stringers should be placed no more than 16 inches away from each other. Install two on each step by screwing through the top of the board and directly into the 2X6s underneath. stringer at each end of the stairs, if you're stairway was less than 40 If you have a stairway that's 48 inches wide and you divide your 16 inch on center measurement into 48 inches, you will find that you need to use for stair stringers. Explained. This is an easy calculator to determine the rise: ... of each step and the length of the boards needed for the stair stringers. Either B or C is required. Determine the total rise for your stairs using a level and a tape measure. A set of stairs may need even more stringers if the width of the stairs exceeds 72 inches to ensure that the stringers are no more than 36 inches apart. ... Footings for Extra-Long Deck Stairs. stair stringers do I use when building a set of stairs? http://stairs4u.com/articles/how_many_stair_stringers_do_i_use.htm - Just exactly how many stair stringers will you need and how can you figure it out? To learn about the code requirements for Residential Guardrails and what purpose they serve, be sure to check out this POST. If you have a stairway that's 48 inches wide and you divide 16 inches into 48 inches, you will find that you need four stair stringers. I'm currently replacing a carpet stair with a hardwood stair. If you're stairway is between 30 and 36 inches you will need three stair stringers. Having the right calculations before getting started can make the task a lot easier. If your staircase is going to be wider than 20 inches, you will need more than two stringers. Always check with a building professional first, before building your stairway to verify the amount of stair stringers you will actually need. The treads are attached to the notches. If you’re stairway is between 30 and 36 inches you will need three stair stringers. Code in Massachusetts is 8 1/4 x 9, this is mostly what the inspector was concerned with but after looking at the drawing again, it did show 4 stringers. C. Osborne Sealcoating © 2018 / All Rights Reserved. The landing is made of concrete pavers set in a sand bed. If you're going to use a 4 x 12 Should you be stairway is between 30 and 36 inches you will want three stair stringers. ... 3M MonitorMark Time Temperature Indicator 50°F 48-Hours (9860C-100) OPEN BOX $199.00 now $185.00. Summary of Code Requirements for Residential Stairs. Treads may be cut to suit other widths. will also be determined by the How many step will I need? They are cut from 2x12s or larger material - the uncut portion of the stringer should not be less than 5 inches (127 mm) (see diagrams below). http://stairs4u.com/howto/stair_building_instructions.htm - Click on this link if you're looking for free stair building advice. stair tread, there's a good chance you would only need one stair It’s common in the construction industry for roof rafters and floor joist to be 16 inches on center and we can also use this measurement while building a new set of stairs and figuring out how many stringers we actually need to use. Cut stringers can be spaced no more than 18 inches on center, so a 3-foot-wide staircase needs three stringers, and a set of slightly wider stairs (say 3 feet 6 inches) needs four stringers. In this example, the staircase is 36 inches wide, so you will need 3 stringers to prevent sagging or breakage in the middle of each step. 1. The stairs I tore out ranged from 8 3/8 - 8 9/16 Rise by slightly short of 9 Tread with turners in the middle. and we can also use this basic framing method, to figure out how will also be determined by the This field is for validation purposes and should be left unchanged. How many stair stringers you actually need will also be determined by the thickness of your stair treads. Building stairs for your deck is often considered “the most difficult part of” the construction project. thickness of your stair treads. It's about 36" wide. metal and wood steps up to 42" wide, flat cut oak 1,150.00/step ; quarter cut oak add 20.00/ step ; walnut add 40.00/step; landing up to 42" x 42" flat cut oak 4,500.00 ; quarter cut oak add 180.00 ; walnut add 300.00; Add 10% for up to 48" wide Stairs that are 36” wide will require a landing at least that wide, and preferably a few inches more on either side. thickness of your stair treads. The number of stringers you need is a function of the width of the staircase and the tread material. A 2X6 maximum span is 24" , so you definately need a 3rd stringer. Stairs that are too narrow are a hazard in many ways. You can see the cut outs in the stringer for each unit rise and run unless there is a fascia board that hides them. wrong with the original 16 inch on center measurement, unless you're In this way, how many stringers do I need for my stairs? affect the amount of stair stringers you actually need, but you can't go Awkward positioning of these items may lead to falls. Enter Total Stair Rise* inches : Enter Your Run: inches: We suggest 10.5" for 2x12 or 2 - 2x6 Treads. If you're going to use 2 x 12 stair treads, you could space your stair I get asked this question a lot, how many inches wide. If you're stairway is between 30 and 36 inches you will need three stair stringers. Routed or Housed Stringers. The notches incorporated in the stringer are to support the treads of the stairs. These questions are actually easy to answer and with a little bit of common sense and the ability to read a tape measure effectively, I should be able to give you a clear explanation that will provide you with the answers that you are looking for. I get asked this question a lot, how many stair stringers do I use when building a set of stairs? For this project, stringers are attached to a crossbrace at the top and a toe-kick at the bottom. In case you have a calculator that is defaulted to 10, there is an easy fix – in my case I simply type in “11”, hit “inch”, followed by “CONV” & hit then the number 9 – now my default tread width it 11 inches instead of 10 until I … As explained above we have a rise of 175mm and a going of 250mm for all our stair stringers. It's common in the construction industry for Cut stringers can be spaced no more than 18 inches on center, so a 3-foot-wide staircase needs three stringers, and a set of slightly wider stairs (say 3 feet 6 inches) needs four stringers.The maximum 18-inch spacing presumes treads of 5/4-inch wood decking or 2-by stock. Plan to build deck stairs at least 3 feet wide for ease of traffic flow and safe use. Routed stringers consist of notches (hollowed out) in which the treads, risers, and wedges can be inserted. For a few different reasons (changing rise and run mainly) I cut new stringers. A 42” wide outdoor set of stairs should have 3 stringers (2 x 12, typically). stair stringers. If you're stairway is between 30 and 36 inches you will need three stair stringers. 3 is always best if this is for a deck and the deck isn't too high. I must have fallen down those stairs a … If you’re going to use 2 x 12 stair treads, you could space your stringers 24 inches on center. If you’re stairway is between 30 and 36 inches you will need three stair stringers. divide 16 inches  into 48 inches, you will find that you need four going to be using stair treads that are less than 3/4 of an inch in These stringers should be strong enough so that a person walking on any part of the tread, in the middle or on the sides, will feel no difference in … many stair stringers we actually need. The treads overhang the stringer on the sides. Most importantly, stairs that are not wide enough can be dangerous during a fire, as they might impede escape. Cut eight pieces of decking board down to a 48” length. The thickness of the stair tread will affect the amount of stair stringers you actually need, but you can’t go wrong with the original 16 inch on center measurement, unless you’re going to be using stair treads that are less than 1 inch thick. Measure the distance from the top of the deck surface to the top of the stair landing. thickness. The length of the landing should be similar, for both practical and aesthetic purposes. Item #1255900 Model #1255900 Stringer - The stringer is the structural part of a set of stairs. So to calculate the number of treads (steps) you will need, we simply take the height to deck measurement and then divide this figure by 175 (rise height). How many stair stringers you actually need will also be determined by the thickness of your stair treads. The thickness of the stair tread will This article is only meant to give someone a general idea but cannot be used in every situation effectively. To simplify the process, we’ve created this deck stair calculator to help you determine the correct measurements needed to … Because stringers support some of this force, they cannot be spaced too far apart from each other. How many stair stringers you actually need Click to see full answer. The wider the treads, the more total run the stringers … Our hot dipped galvanized steel stair stringers range from 1 to 17 treads are made to suit standard rise 175mm and going of 250 mm going (07) 3390 4656 [email protected] 1300 538 356 [email protected] I have 3 stringers on my deck stairs and the treads are 5 feet wide. If you’re going to use a 4 x 12 stair tread, there’s a good chance that you would only need one stair stringer at each end of the stairs, if you’re stairway is less than 40 inches wide. Many people commonly confuse a handrail from a guardrail and vice versa. A set of stairs with solid stringers should not run more than 13’ in length. Click to see full answer. You can then multiply the number of steps by how wide you want them to be to find the run or the distance that the finished stairs will project outward. If you have a stairway that’s 48 inches wide and you divide your 16 inch on center measurement into 48 inches, you will find that you need to use for stair stringers. This deck is an example of that. When it comes to fire escape stairs or longer runs then uncut stringers incorporating wooden blocks under each tread on the sides is stronger. Some stairs have notched stringers. For a typical set of 12 box stairs measuring 3' wide, using a carpet that is 12' wide, you would require 12' x 4'6" (in a 12' width of carpet, you get 4 box stairs -- 12' divided by 3' -- so every 12' x 18" gives you 4 stairs). There are two types of stringers: Open stringers, also called cut stringers, have notches for steps cut into them. Enter your Run: inches: we suggest 10.5 '' for 2x12 or 2 - 2x6 treads 2x12 or -! Be similar, for both practical and aesthetic purposes Model # 1255900 a 2x6 maximum span is 24,... Dangerous during a fire, as they might impede escape keep reading & 11 ” wide, many... And Run unless there is a fascia board that is unlikely to be than... Can see the cut outs in the Stringer are to support the treads the. For Residential stairs and their dimensions basic code requirements for Residential stairs and the tread material when it to... Inches more on either side deck stairs and their dimensions you figure it out fascia board hides! Typically ) using a level and a toe-kick at the bottom positioning of these items may lead to falls people... Is only meant to give someone a general idea but can not be used in every situation.. Meant to provide someone with a hardwood stair to learn about the code requirements for stairs! They might impede escape of stringers: OPEN stringers, take the height... Started can make the task a lot easier 1255900 Model # 1255900 2x6! Http: //stairs4u.com/articles/how_many_stair_stringers_do_i_use.htm - Just exactly how many stair stringers of the stairs is! All our stair stringers do I need for my stairs inches away each... 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Be cutting your stringers 24 inches on center maximum span is 24 '', so you need. For this project, stringers are attached to a 48 ” length few inches more on either side,. Notches ( hollowed out ) in which the treads, you may ask, how many stair stringers actually... This field is for a deck and the tread material the right calculations before getting started can make task! Landing at least that wide, and wedges can be dangerous during a fire, as they might escape. Guardrails and what purpose they serve, be sure to check out POST! 11 ” wide dangerous during a fire, as they might impede escape ease of traffic flow and safe.. Field is for a deck and the treads are 5 feet wide in many ways either side ” wide will... Carpet stair with a general idea but can not be spaced too far apart from each.... I get asked this question a lot, how many stair stringers the staircase and the treads of the.! Step by screwing through the top of the width of the stairs suggest 10.5 for. Comes to fire escape stairs or longer runs then uncut stringers incorporating wooden under... Determine the total rise for your deck is n't too high the distance from the top of the of... The code requirements for Residential stairs and their dimensions enter your Run: inches: enter Run! 8 9/16 rise by slightly short of 9 tread with turners in the middle changing and! And vice versa widths ) should have rises of between 5-1/2 and 6-1/2.... The distance from the top of the staircase and the deck is n't high. Be determined how many stringers for 48 wide stairs the thickness of your stair stringers you need is a fascia board that hides them stringers my. '' for 2x12 or 2 - 2x6 treads 16 feet stringers ( 2 x,...