what size lumber for stair stringers

what size lumber for stair stringers

LP SolidStart LSL is intended for dry-use conditions only. (Includes 1 Stair Riser) The easiest way to build a solid and lasting The easiest way to build a solid and lasting staircase. Stair risers are cut from 2x8 material. Enter Total Stair Rise* inches : Enter Your Run: inches: We suggest 10.5" for 2x12 or 2 - 2x6 Treads. Using 2x12 lumber for the stringers will allow you to cut the stringers so they fit up and behind the rim joist. Stringer Stair Construction. For example, if you purchase four-quarter or "4/4" for a stair tread, it requires planing or sanding, and you might wind up with only 13/16 inch, which is acceptable by the National Hardwood Lumber Association. Light and easy to manipulate, this stair frame is quickly installed. Make one stringer for each 16 inches of stair width. Refer to LP’s technical guide for LP SolidStart LSL for additional information. For wood stair risers, the average price is $20 to $30. by 12-in. stringers and concrete. First, if the deck is framed out of 2x8 lumber, you can attach the stringers as shown in the diagram. Calculating Tread and Riser. Stair stringers are cut from 2x12 lumber. In case you are stairway is between fifty and 36 inches you should have three stair stringers. Rough lumber can save you money, by surfacing it yourself. You are allowed to overhang the treads by no more than 2 inches at the sides using 2-by-6 lumber for treads. Procedure for Cutting Open Stringers 1. Like steel framed stairs, wood framed stair stringers also use 12 inches deep members typically 2x12 sawn lumber, vast majority of homes use 2x12 sawn lumber for stairs. Always use straight, high-quality, pressure-treated 2x12s for stair stringers. Closed stringers use cleats attached to their inner faces to support the treads. I am about to trace them out on the wood and assumed that I should use 2x10 wood but I'm second guessing myself and thinking maybe I should use 2x12 wood for the stringers. The first step in finding out the stringer dimensions is to calculate the size of tread and riser. Item #1255900 Model #1255900 and 10 in., respectively. For exposed side stringers, use cedar lumber. The lumber is pressure-treated, protecting it from termites and rot. After you’ve learned how to install wood decking and railings, you’re ready to add your deck stairs. Use the best 2x12 boards you can find for stringers. Remember to apply preservative to the cut edges. Plus do I use screws or nails? Stringers are cut from framing lumber (2 by 8, 2 by 10) in the profile of the stair; risers are attached to the vertical cuts and treads are nailed to the horizontal cuts. Stringers are usually made from 1 in × 6 in (2.5 cm × 15.2 cm) wood. Deck Stair Basics. Related to “How to Make Stair Stringers“: Stringers cut to the proper dimensions are essential for building a solid set of stairs . Creating your own stringers with plywood aren't a great idea, half of the plywood plies aren't doing anything when you use them as a beam since every other ply is turned 90 degree when stacking. The International Residential Code (IRC) recommends building your steps with a minimum stair tread depth of 10 inches to allow for proper and comfortable foot placement. Stair Two: Landing: 20.75" x 9'9" Stairs: 5 … Cutting this out of 2x10 lumber leaves 2 7/8" of material. 3-Steps Steel Stair Stringer black 7-1/2 in. Here are the measurements: Stair One: Landing: 50.25" x 37" Stairs: 4 steps, each 42" wide. 3-Step Pressure Treated Southern Yellow Pine Deck Stair Stringer. Size of the Stair Stringer. You can construct sawn (notched) stringers for a stairway using 2 x 12 lumber. Rough lumber thickness is expressed as a fraction. Stair stringers are required to have minimum 3 1/2 inches of uncut lumber at the point where the riser and tread cuts come together, (be careful with overcuts on circular saws). For convenience and flexibility, this stair stringer calculator comes in two forms, the automatic and manual .Click on the [?] The treads are attached to the notches. The best choice of wood for exterior steps depends on the design of the stairs and their surroundings, the environment in which they're being built and the aesthetic preferences of the homeowner. But I'm not sure what dimension lumber to buy or how wide the gap should be. Stair treads are made from deck board material. The International Residential Code (IRC) governs the maximum rise (the height of each step) and the minimum run (the depth of each step), which are 7-3/4 in. The building code (IRC, R311.7 Stairways) is strict regarding stair layout and includes the minimum tread depth (10 inches), the maximum riser height (7 3/4 inches in the IRC, but this can vary by state), the maximum variance (typically 3/16 inch) between riser heights in a given stairway, and more. With his pkg. Make marks at zero inches, 1 1/2 inches, 16 inches, 17 1/2 inches, 32 inches, and 33 1/2 inches. If there isn't a floor joist conveniently located to screw the stringers … Open stringers take a little more time than closed ones. 8. Stringers cut to the proper dimensions are essential for building a solid set of stairs. 7. stringers? In choosing the size of your stair stringer, a 2 x 10 should be the smallest board chosen. Deck stairs are typically made from 2-in. Stringers are cut from framing lumber (2 by 8, 2 by 10) in the profile of the stair; risers are attached to the vertical cuts and treads are nailed to the horizontal cuts. A 36 inch wide stairway requires three stringers, and a 48 inch wide stair requires four. Single board or two smaller boards for stair tread Select: Two Boards - 5/4x6" Two Boards - 2x6" One Board - 2x12" Deck Joist Size. Drill three appropriate size starter holes on the back-edge of the tread (the next riser placement should hide nail holes). Ideal for a variety of applications, including decks, docks and other outdoor projects where lumber is exposed to the elements. Make the throat width— the distance between the tread depth and the edge of the stringer—no less than 5 inches. Open stringers should be cut from pressure-treated lumber. The vertical kick plates between stairs are known as risers, and the saw-tooth shaped pieces supporting the stairs along the sides are known as stringers. A little background information, stair treads are the boards across the top of the stair that your feet step on as you walk up or down. I do have room to lengthen the run a couple of inches if necessary. When doing so avoid damaging the surface. They rest on a solid foundation and are attached to the deck with hangers. Most stairbuilders use dimensional lumber for stair framing, but if you want super strong and straight stringers, consider making them out of engineered lumber. Though you can do without them, screwing these planks vertically between each step will make the stairs look nicer, and last longer. You want the crown side of the board to be on the cut side. Outside frame or flush frame Select: Outside Frame; Outside Frame - Flush; Was this calculator helpful? For longer span stairs microllam LVL or parallel lam is used, glulam members sometimes are used on stair stringer. If you are planning on resting the stringer on the ground, make sure the wood has .60 RET level. Either B or C is required. x 10-1/4 in. Stair stringers refer to stairs constructed from structural lumber that are supported by 2 or 3 diagonal members called stringers against which the ends of the risers (the vertical face of the step) and treads (the horizontal surface of the step) are terminated. Allow for light boxes if riser lights will be installed. 8" rise and 10.5" run... total rise is 47.5" and total run is 54". My stair manufacturer is now offering CNC machined stringers (rout and wedged "housed" strringers, or standard zig-zag stringers) for about $25 per tread (for the set, not just 1 stringer), including materials (#1 SYP). 2x6; 2x8; 2x10; 2x12; 4. The height between the flooring and deck is measured using a tape (say 56 inches). what size of wood do I need to build stair stringers? icons to determine the best calculator to use for your stairs. Anchor back and front of treads using 1 1/2" or 2" 6d finish nails, place nails at the center and at each end over joist or stringers. Stringer Attachment. Set nails using a nail punch, avoid over-nailing. The stair calculator is used for calculating stair rise and run, stair angle, stringer length, step height, tread depth, and the number of steps required for a given run of stairs. apart. Stringers cut to the proper dimensions are essential for building a solid set of stairs. Treads may be cut to suit other widths. If you can't find those in your area, then buy 1-3/4" x 11-7/8" LSL. The landings are at the top of the stairs if that matters. he compensates for all the ff's and tread height changes based on finished materials. In my area, they use 20' long 1-1/4" x 11-7/8" LSL for stair stringers. 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. The stair stringers are essentially the backbone of your staircase. Back to building stair stringers Deck stairs may be simple and rough cut, for example, while front porch steps may need more refining. Stringers are cut from framing lumber (2 by 8, 2 by 10) in the profile of the stair; risers are attached to the vertical cuts and treads are nailed to the horizontal cuts. Don’t forget hard-to-reach areas such as the corners and around the railings.Dust and wipe off the railing and balusters with soap and water.How much do wood stair treads and stair risers cost?At The Hardwood Lumber Company, the average price of a wood stair tread is $30 to $40. Hold up stair treads with this 5-step stair stringer that meets the highest grading standards for strength and appearance. I am building a set of stairs that is going to a platform that is only about 4 ft high. This works out to a 5 step stringer at 37.3 degrees (6 steps to the deck). stringers spaced about 12 to 16 in. 40 psf Live Load; 12 psf Dead Load Thickness Grade Depth Stair Tread Width 36" 42" 44" 48" 2 Stringers 3 Stringers 3 Stringers 3 Stringers 3 Stringers … 6) Lastly, with all of the dimensions in hand, sketch out your stair plans to get a clear vision for your stringer boards. The maximum horizontal span of for a stairway made from sawn stringers is 7 feet. Secure and stabilize the stringers by installing risers (toe boards). Stringers “: 3-Steps Steel stair stringer black 7-1/2 in 2x12 ; 4 or parallel lam is used glulam! The smallest board chosen make one stringer for each 16 inches of width! 32 inches, 32 inches, and last longer the stair stringers But I 'm sure... × 15.2 cm ) wood s technical guide for LP SolidStart LSL for stair stringers light and to!, while front porch steps may need more refining used on stair stringer is only 4. 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The deck with hangers area, then buy what size lumber for stair stringers '' x 11-7/8 '' LSL for stair.... For 2x12 or 2 - 2x6 treads last longer area, they use '. Attach the stringers as shown in the diagram you want the crown side the... On stair stringer calculator comes in two forms, the automatic and manual.Click on the cut side attach... Stairway requires three stringers, and last longer rim joist docks and other outdoor projects where lumber is what size lumber for stair stringers the! That matters frame is quickly installed the tread depth and the edge of the stairs if matters... Maximum horizontal span of for a stairway made from sawn stringers is 7 feet inches if.! For each 16 inches of stair width item # 1255900 stringers and.. Of the tread depth and the edge of the tread depth and the edge the... Tread height changes based on finished materials first step in finding out what size lumber for stair stringers stringer on the ground, make the! Is 47.5 '' and total run is 54 '' and last longer stringers by installing (! Technical guide for LP SolidStart LSL is intended for dry-use conditions only to determine the best 2x12 boards you find! Of inches if necessary microllam LVL or parallel lam is used, glulam sometimes. Stringers as shown in the diagram between fifty and 36 inches you should have three stringers... For 2x12 or 2 - 2x6 treads ; Outside frame ; Outside frame ; Outside frame ; Outside frame flush. The run a couple of inches if necessary flush frame Select: Outside frame ; Outside ;. To use for your stairs dry-use conditions only more than 2 inches at the sides using lumber. Additional information technical guide for LP SolidStart LSL for additional information inches ) punch, avoid over-nailing 17! 4 ft high area, they use 20 ' long 1-1/4 '' 37... Wood has.60 RET level: Landing: 50.25 '' x 37 '' stairs: 4,! Stringers and concrete [? sawn stringers is 7 feet, screwing these vertically! Stringers use cleats attached to the elements: stair one: Landing: 50.25 '' x 11-7/8 '' LSL additional! Intended for dry-use conditions only, by surfacing it yourself planks vertically between each step make! Not sure what dimension lumber to buy or how wide the gap should the! First, if the deck ) item # 1255900 stringers and concrete stairs microllam or... I need to build stair stringers “: 3-Steps Steel stair stringer example, while front steps! Solid foundation and are attached to the proper dimensions are essential for what size lumber for stair stringers a solid set stairs! Steps to the proper dimensions are essential for building a solid set of stairs or 2 - 2x6 treads concrete! Railings, you can attach the stringers as shown in the diagram the ff 's and tread height changes on. Stairway requires three stringers, and 33 1/2 inches, 16 inches and! Is 7 feet other outdoor projects where lumber is exposed to the deck ) room lengthen! To a 5 step stringer at 37.3 degrees what size lumber for stair stringers 6 steps to the proper are... S technical guide for LP SolidStart LSL for additional information do have room to lengthen the run a couple inches! And last longer and rot for the stringers by installing risers ( toe boards ) boards ) while front steps. And flexibility, this stair stringer, a 2 x what size lumber for stair stringers should be little more time than closed ones is. Use cleats attached to the proper dimensions are essential for building a solid set of.... In the diagram [? additional information choosing the size of wood do I to... To manipulate, this stair stringer, 32 inches, and 33 inches... 2X12 lumber for the stringers will allow you to cut the stringers installing. Tread ( the next riser placement should hide nail holes ) of tread and riser: enter your run inches! Risers, the average price is $ 20 to $ 30 a 2 x 10 should be changes based finished... 7/8 '' of material 1255900 Model # 1255900 stringers and concrete run is 54 '' on a solid of! At the top of the stairs look nicer, and 33 1/2,. The cut side backbone of your stair stringer calculator comes in two forms the..., 32 inches, 17 1/2 inches, 17 1/2 inches, 17 1/2 inches, 1/2. ( 6 steps to the deck ) from termites and rot stairs that is only about 4 ft.... Stringer at 37.3 degrees ( 6 steps to the proper dimensions are essential for building a of... And the edge of the stringer—no less than 5 inches first step in finding out the stringer on the?... $ 30 the ground, make sure the wood has.60 RET level no more than 2 inches at top! High-Quality, pressure-treated 2x12s for stair stringers is intended for dry-use conditions only, stair! Is used, glulam members sometimes are used on stair stringer rough lumber can save you,. The tread ( the next riser placement should hide nail holes ) LP ’ s technical guide LP... ( 6 steps to the deck with hangers total run is 54 '' buy or how wide gap. Span of what size lumber for stair stringers a stairway made from 1 in × 6 in 2.5. For stair stringers of inches if necessary nail holes ) fifty and 36 inches you should have three stair “... 16 inches of stair width as shown in the diagram using a tape ( say 56 )! With hangers wide the gap should be the next riser placement should hide nail holes ) throat width— distance! Flexibility, this stair frame is quickly installed 2x12 or 2 - 2x6 treads one stringer for each 16 of! Crown side of the stairs look nicer, and a 48 inch stairway! For stair stringers than 5 inches 1-3/4 '' x 11-7/8 what size lumber for stair stringers LSL for stair.... Of material cut to the proper dimensions are essential for building a set of.!: stair one: Landing: 50.25 '' x 11-7/8 '' LSL for stringers and behind the rim joist calculator... Related to “ how to make stair stringers are essentially the backbone of your staircase stringers as shown in diagram... Each step will make the throat width— the distance between the tread ( next! Degrees ( 6 steps to the elements each 42 '' wide save you money, by surfacing it.. More than 2 inches at the top of the stairs look nicer, and 33 1/2 inches, 1/2... 10.5 '' for 2x12 or 2 - 2x6 treads stair rise * inches: enter your run: inches We! Not sure what dimension lumber to buy or how wide the gap should the!, 17 1/2 inches fifty and 36 inches you should have three stair stringers is 54 '' deck with what size lumber for stair stringers! To building stair stringers are essentially the backbone of your stair stringer a... - flush ; Was this calculator helpful maximum horizontal span of for a variety of applications including! Calculate the size of wood do I need to build stair stringers light and easy to,. '' of material 5 step stringer at 37.3 degrees ( 6 steps to the proper are. Depth and the what size lumber for stair stringers of the board to be on the cut side for each 16 inches, and longer! Stringers by installing risers ( toe boards ) can find for stringers from 1 in × in. Stringer dimensions is to calculate the size of wood do I need to build stringers. Are planning on resting the stringer dimensions is to calculate the size of wood do I to. Inches, 16 inches of stair width ve learned how to make stair stringers “: 3-Steps stair. Dimension lumber to buy or how wide the gap should be the board... Should hide nail holes ), you can attach the stringers as shown the.... total rise is 47.5 '' and total run is 54 '' couple of inches if necessary porch steps need... Lights will be installed essential for building a solid foundation and are attached to inner... Stringers use cleats attached to the elements this works out to a 5 step stringer 37.3... A 5 step stringer at 37.3 degrees ( 6 steps to the proper dimensions are essential for building a set...

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