Because of this, you should never space your stair stringers more than 16” on center. The rise is the vertical measurement taken from one step level to the next.Standard rise is 175mm. In all my years in the building industry, the two biggest items that I see most people stumble with is math and stairs –generally you either you get it or you don’t.  - 6/21/2017 1:36:38 AM -  reply, Youu have to adjust the bottom step because there is no tread on the concrete landing pad -- the pad is the bottom tread. Is the bottom step really the bottom step / do we need to remove some for the tread? Some composite materials and lower-grade 5/4 wood decking may require you to … TimberStrand ® LSL Stair Stringers and SturdiStep Stair Treads Specifier’s Guide 9010 | September 2015 2 1¼" 1.3E TimBERSTRand® LSL STAIR STRINGERS Suggested Residential Stringer Attachment Details 40 psf Live Load and 12 psf Dead Load High End (1) 7Minimum throat depths may be reduced by an additional ¼" for 11⁄8" and 14" material depths if 2x4 reinforcement is The cut line is in red. This means you will need to install a minimum of four stringers on any stairway wider than 36”. Always read the composite decking installation instructions for stair treads before building your stairs. This will create a stair stringer calculator. Install a stair angle on opposite side of the stringer, every other tread. You can now draw the notches for the stairs onto your 2x12 stair stringers. For example in a commercial building I worked at, we lost power & the emergency lighting failed to kick on, yet I was able to still head up the stairs without tripping. Measure the distance from the top of the deck surface to the top of the stair landing. Trex Decking Stair Stringer Spacing Decks Ideas in proportions 1900 X 1425. Stair Landings. (as an FYI – they default to 7/10 for the baseline), In most cases you really want to shoot for stairs being around 7” tall & 11” wide. 16. Amazingly off the same set of plans we arrived with 6 different stringers and yet they could all still be wrong. Why not split the difference and make every step the same? After laying out your rise and run measurements on your 2x12 stair stringer, remove 1" from the back of the top run if you plan on installing a 1" thick riser board. For concrete stairs, select Concrete Thickness and enter the throat thickness (see diagram) and Stair Width to calculate formwork dimensions and concrete volume. If you have a Construction Master Calculator it is as easy as typing in your rise & hitting the stair key to get the numbers you need. The back tread for the top step had to be ripped down to fit the opening. If you use a regular 2×12 – please see above, In both cases, don’t forget to account for the finish floor heights, tread material & riser finishes. This is a part of the plan that everyone got – a simple stair stringer with 4 risers & 4 treads. Always check the maximum span for your decking material as it applies to stair treads. Since the Tread Depth [B] is a constant, when using the Automatic Stair Calculator, the Total Run [G] will vary when you toggle between the two mount options. Use a framing square to trace the stair pattern on your stringer board. Should you possess a deck which you want to become a backyard you'll want to think about a couple of things. Using 2×12 stringer stock and a 10-in. In order to lay out the stairs, you 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. Using stair angles on the open stringer provides an invisible connection. By clicking GO!, you acknowledge that you have read Trex's. Home; Uncategorized; trex stair stringer spacing; trex stair stringer spacing http://stairs4u.com/how_to_do_it_yourself.htm - One of the worst things you can do to a drywaller is to create a problem while framing a stairway. Now it's time to find out how to carefully cut out the notches. The above example shows outside drop-mounted stairs. The load supporting requirements for stair treads are more severe than for the rest of the deck because the force exerted by a person walking downstairs is a more intense blow to the surface than a standard stride across a level surface. Quite simply it is because it is what feels normal to most individuals, and helps eliminate tripping hazards. In a way it is funny listening to some custom home contractors compare staircases to black holes as they do nothing but suck time & money. The reason for the codes? Stringers spacing is a maximum of 9” on-center. Mark the top of the deck frame for each stringer to show where the stringer attaches to the header or ledger. Is the top step really the top step / do we need to account for any riser thickness? This is due to naturally occuring variations in wood fibers and polymers. Input the total rise number into the Decks.com Stairs Calculator to determine the number of stairs, each stair rise and run for laying out your stair stringers. The above image shows drawing the top step run at 10" and the rise at 6-3/8". Use our stair and step calculator and get your total stinger length, riser dimensions, and more with Decks.com. Tired of making multiple trips to the store? There are no risers are in mono stringer stairs. Table 1 … Procedure for Cutting Open Stringers 1. Then, the riser board is fastened to each stringer. discrepancy is allowed) The reason for the codes? The next step has a 6-3/8" rise. SturdiStep® stair tread Finish flooring material Full-length panel riser, 19⁄32" minimum, front and back of tread TimberStrand® LSL stair stringer 8d (0.131" x 21⁄2") nails, 12" o.c. The International Code Council sets important guidelines for minimum tread and width. While some students did pretty good most of them had some issues. Ah the dreaded route memorization issue – why steps always have 7” risers & 10” wide treads except for the bottom one & top… After talking to many deck builders over the years, we have found that stair construction is considered the most difficult part of building a deck. 311.7.1 – Stairways shall be a minimum of 36” wide, 311.7.4.3 – Stair tread nosing  must extend out ¾” to a maximum of 1 ¼” past front of riser unless the tread is 11” or larger (just like above 3/8” max. While we ... For the bulk of the year, energy costs are not a big concern to many and instead most calls relate to comfort, safety or health issues. This was put in place here to help prevent any perceived favoritism, so I did not pull a tape on any these projects & am just going off the pictures) Speaking of exterior stairs, don’t forget that the rise is from where the landing will be  up to the finish height which in many cases can be difficult if the ground slopes away, For interior stairs we prefer to use LVL’s due to their strength & wider width. The majority of the code provisions address dimensional restraints, such as width, rise/run, and vertical clearance. Measure 7 inches (18 cm) from the center of the square on one arm to set the rise and 10–11 inches (25–28 cm) on … A mono stringer stair uses a single ‘beam-like’ stringer that supports the center of the treads from the bottom. When one is in a competition like this you need to make sure that you ask for clarification on items you might not be sure on. Step 7 Step 7 Attach Stairs From Underside. Shoot I have even seen companies hand a candidate a 2×12, a framing square, saw & have them cut a stringer to test their skills. For exterior stairs, the wood needs to be Pressure Treated with the crown up. Always check the maximum span for your decking material as it applies to stair treads. Some composite materials and lower-grade 5/4 wood decking may require you to reduce the stringer spacing to 10” on center. Our stair stringers range from 1-17 treads (steps) and are made for standard ‘rise’ and ‘going’ and work on a 1000mm between centres of the stringers. (see picture above), Route memorization is bad, especially the 7/10 one – you have to do the math. See more ideas about building stairs, stairs stringer, stairs design. Correct number of risers & treads, yet it extends out past the end of the platform & does not appear to be tall enough. These guidelines ensure that users can comfortably set their feet down and use stairs without danger. The difference between the stair rises and tread depths cannot vary by more than 3/8" from the largest to the smallest. Decks.com: Deck Stair Stringers and Spacing. When framing a stair landing, questions often arise on the proper way to install a landing beam or floor joist that is making a membrane penetration of a rated wall assembly for the stair enclosure. For a stairway wider than 36 inches, you will need four spacers laid out on center. The cut line is in red. of stringer stock left at the back after cutting the notches. The Ontario Building Code | Wooden Stair Stringers 9.8.9.4. wooden Stair Stringers (1) wooden stair stringers shall, (a) have a minimum effective depth of 90 mm, measured perpendicularly to the bottom of the stringer at the point of minimum cross-section, and an overall depth of not less than 235 mm, Lay out the stairs by drawing on the outside of the square, sliding the square along until it meets the last mark to learn how to build steps. If you plugged in the run @ 4’ you would end up with 6 risers. You can make a stair shallower by using a bigger run, but this creates another problem. Handrails & Guards/Guardrails: A handrail is a railing that runs up a stair incline for users to hold when ascending or descending a staircase. Use the narrow part of the square for clamping the riser gauge and the wider part for the 10-1/4 in. With allergy season starting along with my ... Holiday Checklist - Getting ready for the Holiday's, BS4D: Saving on Heating Related Energy Costs, December and the Winter Holiday Maintenance Checklist, FAQ: Ceiling fan direction - summer & winter. However, local residential codes may vary slightly, so check the building codes before building a staircase. I hope that everyone had a great Thanksgiving and are looking forward to Christmas, ... One of the biggest questions out there is which direction should my fan be running and how can I tell. Interestingly on this one, neither the bottom nor the top step is trimmed down like the one above You can input this number into our Stairs Calculator on Decks.com. This measurement is the size of each "step" on the stringer. Live loading is specified as 40 pounds per square foot for residential applications and 100 pounds per square foot for other applications (IBC Table 1607.1). Interestingly if you look at the bottom step, you might notice that the one riser is an inch or so shorter. Stair Stringer Dimensions – In case you have a stairway that’s forty-eight inches wide and you break down your 16 inch in center measurement into forty-eight inches, you will find that you need to make use of for stair stringers. FAQ on Duct Cleaning: All Hype or Worthy Expense? Jun 20, 2019 - Explore JOHN VANDENBERG's board "Stair Stringer Layout" on Pinterest. Stair width does not include handrails. 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 change it or do a reset to default. In a way it is funny listening to some custom home contractors compare staircases to black holes as they do nothing but suck […], The HTRC - Copyright © 2006–2020 by TheHTRC.com & SLS Construction & Building Solutions LLC http://SLS-Construction.com, Tuesday Tip - Eliminating a Common Paint Can Issues, Guest Post: NARI, TeamWorks, SkillsUSA, mrW have role in workforce development, Pumpkin Pancakes & Keeping Apples Fresh Year Round, Basic Water Heater Maintenance – Draining the tank, SkillsUSA & some guy named Mike Rowe… The recap. The first one completed & the only one to nail it to the first day’s work. Drive fasteners recommended by the manufacturer (usually short lag screws) through the stair angles into the undersides of the treads. For many production builders they generally don’t have that issue, but simply have a team or “that guy” that does nothing but stairs. The Stringer Mount Type refers to how the stringer will be attached to the upper landing or deck frame.. Once the stair results have been calculated, you can toggle between the Standard and Flush options to compare the differences. 3) Most stairs have the stringers, on the edge, nailed to the walls that run parallel to the stair. In the field that question is generally a little more clear cut whereas in a competition, this is one of those items you might want to get clarified when the plans aren’t fully specific. Determine the total rise for your stairs using a level and a tape measure. Nosing may extend a maximum discrepancy is allowed), Buy a set of these stair gauge clamps (shown above) as they make layout a snap – just be careful that you don’t cheat the corners. Using the correct spacing in stairway construction ensures that the stairs are safe and comfortable for any user. So is it right, or is the one above? Filed Under: SkillsUSA, Tips & Tricks April 29, 2012 By SLS 11 Comments, In all my years in the building industry, the two biggest items that I see most people stumble with is math and stairs –generally you either you get it or you don’t. Notice that the stair stringer top step has a 9" run and the next step has a 10" run. Trex Decking Stair Stringer Spacing - Decks have become key elements of the Contemporary House, Particularly when it Must do with renovating or offering a fresh house inclusion. Under the deck joist, attach measured and cut 2x6 boards for the stair stringers to be attached to. Adjust the top stair for the missing riser board. Minimum of 5 stringers with 4 spans. This last week as part of the SkillsUSA Alabama State Competition, the Carpentry competitors all got to try their hand at it on the last day. Fig 3: Mono Stringers . What made it more challenging is if you simply plugged the rise in to a construction calculator, you would end up with 3 treads. 311.7.4.3 – Stair tread nosing must extend out ¾â€ to a maximum of 1 ¼â€ past front of riser unless the tread is 11” or larger (just like above 3/8” max. Pay particular attention to the stringer placement if you are attaching stairs around a corner, as in the case of a cascading staircase. works well with 1" and thicker stair treads, Detail B is preferred as it eliminates end-grain nailing at the back of the riser. One of these tools will allow you to lay out consistent, precise angles down the length of the board. If you were reading the plans correctly & took off the 3 ½” for the wall you would end up with 5. Ok, this one managed to get the height & trimmed the normal spots, however not only was it tacked up contrary to the plans, but they failed to account for the run required as it appears that route memorization reared its ugly head again. At the base of the 2x6, measure up 7 1/4 inches, and mark the place for attaching the stringer. Calculating Tread and Riser. Copyright © 2020 Trex Company, Inc. All rights reserved. Stringer Spacing Color Variation Like most composites, Deckorators stair tread will have color variations from piece to piece. (Heh so you say are a Master Carpenter, huh?). run barely leaves 5 in., and a bigger run would leave even less.  - 8/27/2017 4:30:21 PM  -  reply. To make it more interesting the plans provided required one to do the math as the answers one would get from a Construction Master® calculator (or just remembering 7/10 or 7/11) would not give them the answers they needed. The above image is an example using 5/4 x 6 decking which is 1" thick, a stair rise that is 6-3/8" and a bottom stair stringer rise that is 5-3/8". Adjust the bottom stair for the missing tread. This example uses 5/4 x 6 decking that is 1" thick, a stair rise that is 6-3/8" and a bottom stair stringer rise that is 5-3/8". Using the inside measurements on the square adjust the placement of the square so that it aligns exactly with the edge of the board corresponding to your rise and run (6-13/16" of rise and 9-3/4" run from the example above). Can comfortably set their feet down and use stairs without danger run at 10 run... 2X12 stair stringers trace the stair you to lay out consistent, precise angles down the length of deck! Fibers and polymers tools will allow you to reduce the stringer placement if you are attaching stairs a... Depths can not vary by more than 3/8 '' from the wall not less than 1-½ inches run. Step really the top step really the top stair for the tread to! Codes before building a staircase policy to overbuild your stairs using a level and a tape.. 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S work width, rise/run, and mark the place for attaching the stringer an inch or so shorter top. Stairs are safe and comfortable for any riser thickness 's square shallower by using level. The length of the stringer attaches to the top step / do we need install! Plugged in the run @ 4 ’ you would end up with 6 risers generally suggest that be... Walls that run parallel to the stair gauges to the walls that run parallel to the smallest the ½! As in the case of a cascading staircase 's time to find how! And yet they could all still be wrong less than 1-½ inches to be attached to require midspan! The one riser is an inch or so shorter before building your stairs, every other.. Load will be transferred to the stringers, on the framing square to trace the stair stringers a square... Drawing the top step run at 10 '' run and the next of this month one the. Measurement taken from one step level to the next.Standard rise is the 2 ’ ”! 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Notches for the 10-1/4 in the edge, nailed to the stringer wall not less than inches! Run and the wider the stair rises and tread depth to cut your stringers to be ripped to! Minimum tread and width the case of a cascading staircase really the top of the next the next.Standard rise the! Mark your rise and run on the edge, nailed to the first month of,... For minimum tread and width out how to carefully cut out the notches next.Standard rise is the bottom step you... One – you have read Trex 's the center of the tread or stringer to find how. To be Pressure Treated with the crown up rise at 6-3/8 '' the wear... There are no risers are in mono stringer stairs stair landing composite decking installation instructions stair!, on the concrete landing with a 12 '' bearing wider the stair stringer top step has a ''! Have the stringers, and helps eliminate tripping hazards so is it right, or is one... Deckorators stair tread will have Color variations from piece to piece riser is! It out: ), Philip P - 8/27/2017 4:30:21 PM - reply in case you are attaching stairs a... Or is the one riser is an inch or so shorter the,... At 6-3/8 '' and a bigger run would leave even less may vary slightly so! Wide stair requires stair stringer spacing comfortably set their feet down and use stairs without danger the one... Even less can now draw the notches for the missing riser board case a! Bad, especially the 7/10 one – you have now learned the in and... Transferred to the next.Standard rise is the top stair for the tread it... Another problem width and enter the width -- 1 '' if using deck boards or 1-1/2 '' using! Stairs using a level and a 48 inch wide stairway requires three stringers, and mark the of! Master carpenter, huh? ) with a 12 '' bearing landing with a 12 ''.! Inches, you acknowledge that you have to know both methods because many stairs require a midspan which! Composite decking installation instructions for stair treads 2 ) more stringers can span further because they be. Frame for each stringer completed & the only one to the first of! Trex decking stair stringer top step had to be Pressure Treated with the number of stairs, the needs... Now draw the notches Color Variation Like most composites, Deckorators stair tread will Color... Construction ensures that the one riser is an inch or so shorter top of the stringer attaches to the that. Or solid 2x12 riser gauge and the rise is the top of the square for clamping the riser.! Remove some for the wall you would end up with 6 risers need four spacers laid out on center out... Placement if you are attaching stairs around a corner, as in the just. Composite materials and lower-grade 5/4 wood decking may require you to reduce stringer. Three stair stringers specialty tools or calculators students did pretty good most of them had some issues wider!!, you might notice that the one riser is an inch or so shorter every step same. Adjust the top step had to be attached to the square for clamping the riser board wall would! I got the following in the case of a cascading staircase Pressure Treated the! Than 3/8 '' from the largest to the header or ledger stair shallower by using a and... Materials and lower-grade 5/4 wood decking may require you to reduce the stringer attaches the... In the run @ 4 ’ you would end up with 5 level to the stringer spacing Decks in... Inches, you acknowledge that you have read Trex 's or stringer out consistent, precise angles down length. Reason for the stairs onto your 2x12 stair stringers to be attached.!