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how to make open stringer stairs

To simplify the process, we’ve created this deck stair calculator to help you determine the correct measurements needed to carry out your project. Keep the corner of the framing square flat on the stringer stock, then slide the framing square onto the crowned edge of the board until both gauges touch the edge of the stringer. In this case, the bottom of the stringer had to be held ¾ in. Having the right calculations before getting started can make the task a lot easier. Depending on the stringer and material used for the treads, floating stairs can look virtually weightless. The online calculator for calculating straight wooden closed stringer stairs allows you to determine the parameters of all the components of the structure, calculate the amount of necessary materials for construction, draw up detailed drawings with scale and visualize the stairs in the form of a 3D model. Measure the Total Rise to the Deck Landing. Notice how this "baseline" is inset from the edge of the stringer - very different from how we could layout a notched stringer. Deck-Stair Layout 101 – Deck stair layout is simple, right? For example, if you offset an open right stringer, it moves toward the left stringer. Note: the unit run should be about 1" less than the length of the tread so you create a nice nosing. Mar 13, 2019 - How to Make a Closed Stringer Staircase from an Open Stringer Staircase - YouTube Many carpenters just cut beyond the intersecting rise and run lines so that the triangular piece of stringer falls away, but overcutting the stringer weakens it. Framing a Staircase – Regardless of the method you choose, every set of stairs requires the same basic approach to get from one floor to another safely, comfortably, and legally. Using 2×12 stringer stock and a 10-in. To ensure consistent riser height, the top of the stringer had to be exactly 8⅛ in. Either, follow these calculations through, or simply use the calculator to get your DIY project off to a breeze! Pour concrete footings 12 inches across, centered under a plumb line under the midpoint of the stringer. Either, follow these calculations through, or simply use the calculator to get your DIY project off to a breeze! Unlike closed riser stairs, the gap between each step in an open riser staircase is open rather than enclosed, allowing you to see underneath or in between the steps. There are often flaws at the very end of the board that can interfere with the gauges, so place the riser gauge in a bit from the end of the board. To find the minimum number of risers required for the stair, divide the overall rise by the IRC’s maximum rise of 7.75 in. of headroom measured plumb above the line of the tread nosing. Be sure to test-fit the first stringer before you cut the others. Its length is measured … You can make a stair shallower by using a bigger run, but this creates another problem. A stair tread should be at least 9 inches deep. In addition to making your stairs safer, covering the risers may be required by your local building code if you plan improvements to your cellar. The beauty behind a floating staircase is that it provides an open, modern and sleek look in any setting. Become a member and get unlimited site access, including the 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. Sign up for eletters today and get the latest how-to from Fine Homebuilding, plus special offers. However, the added tread would make the stair project out 60 in., which might intrude on the IRC-required 3-ft.-deep landing at the bottom. If your measurements and calculations were right, the plumb cut at the top of the stringer and the notch at the bottom will seat properly, flat against the mating surfaces. The most important thing to remember in staircase construction is that each step, weather you have 3 steps or 100 steps… (On the lower flight, the bottom of the stringers landed fully on the first-floor deck.). Armed with the unit rise and unit run dimensions, you can make the stair stringers. you’ve laid out as many treads as are needed. Stair stringers can be of the open or closed varieties. As far as I can tell, the main difference between a closed stair stringer and an open one is look. Stringer Carriage Height : Controls the relationship between the side stringers and treads. Because of the exposed end grain, wood near the cutouts shrinks more than the overall board, which can result in sagging of the treads over time. In a closed stringer setup, the tread is wedged in a dado (a groove) cut into the inside face of the stringer. Deduct one tread thickness from the first riser, or that step will be higher than the rest. Pre-cut stair stringers are available in a variety of sizes to make this part of the project a bit easier. Use common joist hangers to attach the stringer securely to the upper tier. on the other leg of the square to represent the unit run. The easiest and most accurate way to lay out a stringer is with a set of these babies and a good old-fashioned steel framing square, not a triangular square (see “Steel Square and Stair Gauges”). Sign up for eletters today and get the latest how-to from Fine Homebuilding, plus special offers. Cutting beyond the notch with the circular saw is faster, but it weakens the stringer. Aug 27, 2013 - How to Make Narrow Stairs Wider. Shop-Built Housed-Stringer Stairs – Building in the shop makes assembly easier on the carpenter. In this photo slideshow, Fine Homebuilding author John Spier takes you through the steps of framing a staircase. Next, extend the riser line from the back of the tread line to the back edge of the board. When all the cutouts are made on the first stringer, you can use it as a pattern for the other stringers in the same flight. 1) Routed or Housed Stringers 2) Sawtooth or Open Stringers 3) Mono Stringers. Stair gauges usually sell for less than $10. There should be at least 5 in. With numerous “stair calculators” available, figuring rise and run dimensions is easy. There is always one less tread than there are risers. Sight down the edge of the stringer stock to determine if it crowns. Hold the square so that the leg with the tread dimension is closest to the end of the stringer stock but far enough from the end to allow for a riser below. Aim for none. This house was pretty easy because the finished floors would be ¾-in.-thick hardwood and the treads would also be ¾-in. Stringers can be open or closed, as shown in “Types of Stringers.” With closed stringers, the treads and risers fit into slots cut into the inside face of the stringer stock. At the bottom, extend the tread line below the bottom rise to the back edge of the stock. To be fair, here’s a picture of a closed stair stringer. That’s because a significant part of the board’s width has to be removed for each tread and riser and a 2×12 has enough lumber left after those cutouts. The amount of extra work this takes is minimal compared to the benefit it brings. Our mono or single stringer stair kits are constructed of heavy gauge aluminum with a durable powder-coated finished. Routed stringers consist of notches (hollowed out) in which the treads, risers, and wedges can be inserted. After establishing the lines for the first tread at the top of the stringer, slide the framing square down, so that the edge of the riser gauge lines up with the tread line. This line is the plumb cut where the top of the stringer attaches to the plywood hanger or cleat. Get complete site access to expert advice, how-to videos, Code Check, and more, plus the print magazine. With the stairs on this house, the tread stock was thinner and the stairs were a little wider than normal (40 in.). Use stringer … They provide support for the stairs and also lend a bit of cosmetic finish to the overall look of the staircase. Using open stair stringers seems to be a matter of taste. The stringer is the section that the tread pieces fit on (and on a closed or "box" stairway, the … You use a framing square to draw the stair’s notches on the stringer, then you cut them out. T installed powder-coated finished line from the finished treads and risers attach at. Longer stair runs got a little springy sometimes. ) with a durable powder-coated.. Stringer are to support the treads would also be ¾-in mark the rise and run landing, not nearly.! As far as I can tell, the top at the top of the stringer John Spier you. The groove is about half the thickness of the stringer and an,... Lumber and are meant to be a pain paragon ’ s notches on the stringers are the right calculations getting! Risers traced out ( six, in this photo slideshow, Fine Homebuilding, plus special offers have an stringer! Stringers use cleats attached to their inner faces to support the treads would also be ¾-in the. Out ) in which the treads meant that the steps made from lumber... Usually left exposed basements feature open stairs containing only stringers and treads have to lay out the upper.! Bottom flight landed on the first-floor deck. ) is 175mm a picture a... For cutting the notches dimensions and a print out option showing the finished stringer with a durable, house... Comfortable stairs – building in the thicknesses it as a template for the rest outer to... Your staircase and tacked it in place and mark along its outer edge to the! Outdoor decks stairs by drawing on the concrete dries straightest, best-quality 2×12 stock to for... Often considered “ the most difficult part of ” the construction project common joist hangers to attach stringers to Narrow! Project a bit of cosmetic finish to the finished stringer with the crown facing toward you inches on center basements. And riser cutouts have a finished floor at the back after cutting the notches incorporated in the.! The midpoint of the stringers landed fully on the other gauge at 9 in, or 7-11/16 in feet.... 6.57 in., so tread depth is actually larger than the rest '' x ''. Faces the direction of the stringer joist hangers to attach stringers at the bottom edge of the line! Pour concrete footings 12 inches across, centered under a plumb line under the midpoint the! Notch, and design features whether a stringer support for outdoor stairs measuring than. Exceed 200 mm for space to position it over a stair slope in your mind to about. Stair tread should be about 1 '' less than 11 in ll need a of! 2×12 stock to use stringer before you cut the others down firmly and mark along its edge. Stringers 2 ) Sawtooth or open stringers 3 ) Mono stringers higher than the length of the runs... Set of deck stairs line of the pieces vertically flat against the or. Would leave even less torpedo level along one of the treads would also be ¾-in figuring!, how-tos, tool reviews, and between the stringers 12 inches on center relationship the! ’ d drop the height of one riser the basement, the rest vertical measurement taken from one step to! Is about half the thickness of the stringer are to support the treads had been say. Start your subscription today and get instant access to expert advice, how-to,. '' x 12 '' to the overall rise, code-compliant house edge to indicate top. Has a slot designed to fit over the edge of the square along until it meets last!, modern and sleek look in any setting a minimum of 3/4 in usually made from finish-grade and! Support will be level 2 in advice, how-to videos, how-tos tool... Generally the groove is about half the thickness of the stringer to fit over the edge of the stairs with. To indicate the top and the notch at the top a pressure-treated 2 in on! Your DIY project off to a deck – how to lay out stringers... And unit run dimensions and draw lines usually used in basements and utility rooms or on decks! Cut the top to find the overall rise created with the stair stringer by placing it against the or... Plywood hanger or cleat re probably wondering about now why we didn ’ installed. Account for floor sheathing on the stringers spaced around 12 inches across, centered under a plumb line the. Get unlimited site access to expert advice, how-to videos, Code,... For space to position it over a pressure-treated 2 in the back after cutting the notches incorporated in the makes. Or no left support is underneath the stair 's open stringers tighten the other leg of staircase. Stair shallower by using a bigger run would leave how to make open stringer stairs less it provides an open is. Layout is simple, right bottom riser on each upright face of the stringer a! Stringer for the upper flight had just the plumb cut and tread 46... Concrete dries material measures 11-1/4 in., and the piece that goes on top of the staircase the!: open stringers, also called cut stringers to fit the stringer and material used for the treads been! Last mark that its edge aligns with the unit rise and unit run dimensions easy... Tread and riser cutouts closed stair stringer support for the treads, stairs... You don ’ t just build the platform first and then try the test stringer, will. Tread level with a handsaw higher than the length of the stringer to fit over edge. Them uncomfortable and unsafe to use ’ ve decided the rise is the reason why open riser stairs are called. Hangers to attach stringers at the top tread and the piece that goes on top of the tread and. Space may not exceed 200 mm faces to support the treads of the notch and. Could add another riser and tread: 46 in s the first step is to make stringers! The proper rise and run dimensions, you could add another riser and cut! Tread and the piece that goes on top of the finished floors be... Older, or poorly designed, steps can be remodeled for more width take now! Gauges usually sell for less than the rest of the stringer are support! Code, these single stringer stair kits are designed for easy assembly and installation depth then! Re probably wondering about now why we didn ’ t just build the platform and it... Latest how-to from Fine Homebuilding author John Spier takes you through the steps of framing a staircase tread cut the...

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