These are solid aluminum products on the order of 5/16-inch thickness that are manufactured through a sand casting process instead of an extrusion process. Because there are many manufactured products that are documented and available in BIM format, it is more straightforward than ever to use this available library to make a final selection and actually customize products to suit a project's needs. Think of them as the part you "tread" or step onto as you climb the stairs. Cap A Tread Stair cover. Just like there are specialty pieces for transitions, there are also stair risers or tread boxes for wood, laminate, and vinyl. Cast products typically don't offer many other choices beyond size, but extruded products offer numerous other options including the following: Single-part products. An application of construction adhesive to the underside perimeter of the renovation tread as well as around each drilled hole will stop water penetration under the tread. For renovation stair tread installation, the industry standard is to provide a 9-inch-deep renovation tread on each step and an 11-inch-deep tread at the top of each run at each intermediate landing. A vision line tread with contrasting color for meeting vision-impaired handicapped accessibility requirements and general safety needs. Rinse thoroughly with water after cleaning. Length x 12-1/8 in. A contrasting color can be applied to the leading edge of ribbed treads in any color combination. Stair nosings are a distinct part of a tread that building codes define as “the leading edge of stair treads.” Nosings also apply to the leading edge of landings at the top of stairway flights. Use the following learning objectives to focus your study while reading this month’s Continuing Education article. Installation is easy, … ASTM F1637 Standard Practice for Safe Walking Surfaces The American Society of Testing Materials produces many standard specifications for many things related to design and construction. It states that the vertical risers shall be at least 4 inches and no more than 7 inches tall while the horizontal treads shall be at least 11 inches deep, which is all consistent with the International Building Code requirements for stairs. Stair Nose Moldings PERGO Simple Solution stairnose enhances the overall beauty of the staircase or step-down while acting as a protective strip for the flooring along the leading edge. Three- and four-inch nosing widths are standard since 3-inch or larger nosings will satisfy the requirements of virtually all codes and standards. 3. ) Some have interpreted this in different ways, but the stair industry has responded by providing a 3-inch nosing that can have all or any 2-inch part of it treated with a contrasting color. From the 2009 IBC: R311.5.3.3 Profile. If you had a bullnose stair tread you had to decide if you were going to shave the tread's nose to achieve a proper 90-degree angle. In some cases, construction adhesive may be the most appropriate means to secure renovation treads and is available as an option if anchoring is not possible or practical. I just recently purchased these for my laminate install and I think I can answer a couple of these questions for you... Hopefully not too late! BIM helps the entire project team investigate the options and visualize alternative conditions quickly and easily. Then dry fit the cap a thread to the area, to make sure it is fits. www.nystrom.com, Originally published in Architectural Record, Occupational Safety and Health Administration (OSHA), ASTM F1637 Standard Practice for Safe Walking Surfaces. First is the material used in the manufacturing process. Historically, all of the stair parts and components were typically made of whatever material was consistent with the rest of the building such as stone, wood, or masonry. We haven't had any incidence yet with anyone tripping on it. The common casting aluminum is referred to as Alloy 319 preferred because of its good sand casting characteristics and machining capabilities. Of course, in selecting treads or nosings for any of these applications, the size needs to be identified. Then, the metal safety stair treads are simply screw attached to the wood treads and are ready to use. It is common for manufactured treads and nosings to achieve coefficient of friction levels on the order of 0.98 – 1.02 or well above the minimum called for. The Standard and codes do not quantify slip resistance, but the ADA does recommend a coefficient of friction level of .60 or above for walkways and .80 for ramps. Another question on the installation of the cap-a-tread. Thanks for your question and welcome to the community! Similar to the designs of kitchen countertops, the nosing comes in a … Anti-slip metal safety stair nosings and treads are designed to be installed fully embedded into a substrate such as concrete or secured directly over a flat surface such as wood or existing concrete, any of which need to provide total support for the stair nosing. I read that laminate really chews thru blades becasue of the coating. In design situations where traffic direction changes or stairs turn a corner, it is possible to have the manufacturer or fabricator provide miter cut corners and edges for treads and nosings. In Section 504.4 this Standard goes on to state that the surface of a tread must comply with the provisions of a floor surface as described in Section 302. Zamma has launched Cap-A-Tread, an innovative, durable laminated stair renewal system which allows homeowners and professional installers to dramatically update the look, feel, and quality of stairways, … It is also possible to use “full abrasive” treads and nosings which have the abrasive material covering over the top of the extrusions so that only the abrasive material is seen. Thick The difference in spacing (thanks to the landing and the top floor step) looks "odd." Adhesive. Not all of these materials or stair assemblies held up well as the building was used over time with surfaces becoming worn, damaged, or as assemblies settled or became loose. Products can be selected that are suitable for either new construction or renovation and for interior and exterior stairs. Further, aggressive finishing and overflow of the concrete has the potential to crack a full abrasive tread or nosing or dislodge the abrasive material from the treads altogether. Is that Ok? In industrial or very heavy foot traffic conditions, full cast aluminum treads and nosings can be used. Anyone who has ever tried to open a computer file that produced either an error message related to non-compatibility or a display of unintelligible characters will readily understand the need for seamless integration of information from multiple sources. They are installed as one piece into poured concrete stairs, onto steel pan concrete filled stairs, or onto wood stairs. For attachment to metal steps, bolts and nuts or self-tapping screws can be used. As long as you map out and design the measurements of each step, this will make pieces easier to cut and use. Some of this has been codified in American National Standard ICC A117.1 (the Standard) which is appended to most building codes as the prescriptive requirements to achieve such barrier-free environments. Stair treads are the full horizontal surface that a person steps upon while the nosing is the leading edge of the tread. :smileysad: I recently had a similar situation in my own home while installing laminate flooring. Taped tops. Handrail graspability to be either Type I or II with a Minimum 1-1/2 inch clearance from a wall. The depth, or the distance from the front of the tread to the back, is part of the run calculation in building steps. Building codes commonly define a stair as “a change in elevation, consisting of one or more risers” with a riser being the vertical portion of the individual steps. I read carbide is best, but how many teeth per blade for these saws? Manufacturers' instructions must be followed carefully when using these repair kits to assure that the finished outcome is fairly consistent with the rest of the installation. Miter saw and table saw. Stair nosings are a distinct part of a tread that building codes define as “the leading edge of stair treads.” Nosings also apply to the leading edge of landings at the top of stairway flights. Hardware. Next measure width and depth of the stair for a precision fit. Then make sure the area is clean and dry. California Title 24 The state of California is known for supplementing national standards with additional state-specific requirements and that is true in the case of stair treads and nosings too. The size of each tread … Typically, this means a slightly different edge condition to assure that there is no lip protruding past the metal riser that might cause a tripping hazard. Once all of the aluminum products are staged for installation and the concrete forms or metal pans are ready, then the concrete should be poured. On any type of exterior stair, most manufacturers recommend stainless steel fasteners. In simple terms, parametric modeling is the means to make this all happen. Later, after construction is nearly complete, the plywood is removed and the finished nosing is installed. I have provided an installation guide for the cap a thread and for risers. Ductile iron is available but is generally not selected for stairs since it is better suited to other uses and is notably higher in cost. Two-stage nosing used in metal pan concrete filled stairs. It is worth noting that all these same floor surface requirements also apply to ramps as cited in 405.4 of the Standard. Further, they can be specified for both new and retrofit/renovation installations. Hence the same is true with building products that are inserted as objects into that model. Identify the types of manufactured stair treads and nosings that are available including options to specify for best performance in particular applications. SMARTCORE Ultra 2.07-in x 94.49-in Blue Ridge Pine Unfinished Pine Stair Nosing. This would apply to the treads as walking surfaces on exterior stairways and they should be treated accordingly. Peter J. Arsenault, FAIA, NCARB, LEED AP, practices, consults, and writes about sustainable design and practice solutions nationwide. Typically the kits are shipped with three components—the abrasive in any of the standard colors specified, epoxy hardener, and epoxy resin. The … Zamma offers a wide variety of custom pre-finished Moldings and Transitions, as well as Cap-A-Treads and Risers for commercial construction and home improvement applications. The building code does address the width, profile, and the rounding of the treads. Specifically Title 24 addresses the visually impaired aspect of nosings with a variation on the Standard A117.1 requirements. These examples of extruded aluminum nosings show a ribbed profile (top) and a full abrasive profile (bottom). Note however that repair kits are primarily for aesthetic purposes and do not offer the same stability of treads manufactured at the factory. The actual thickness of the existing stair treads should be 1-1/2 inches thick - so the bull nose should fit fine. These include being stable, firm, and slip resistant. Historically, the architect has relied on manufacturer's representatives to update the office library with catalogs, CDs and other information for handy reference. This is done to ensure the bullnose you use will align properly to the step. Existing stairs that are badly worn or dished will need to be re-leveled with a fast-setting leveling compound such as an underlayment and patching compound. Left: Concrete stairs show their deteriorated condition before using renovation treads. Minimum 10 inch stair tread depth with nosing or Minimum 11 inches with no nosing. These products are also available as flat pieces without any nosing for use in ramps to provide the needed slip resistance for handicapped accessible and other sloped walking surface situations. What are the best blades to use to cut the cap a tread? They also meet a reasonable standard of care for providing safe environments as part of architectural practice. To remove snow and ice on exterior stairs, sodium chloride salt can be used. I have seen some videos posted on you tube showing preparing the stairs by first cutting off the overhang so the current stair tread is flush with the risers, but it would seem then that the attached nose of the cap-a-tread would be unsupported by any solid piece of wood. You would not need these trim pieces if your steps are made of a stair tread … Explore successful cleaning and maintenance methods required for ongoing safe and slip-resistant stair treads and walkways. For purposes of this article, all of these elements of defining stairs, stairways, and treads and nosings apply. Handi-Treads NSN122730BKB Non Slip Aluminum Stair Nosing, Powder Coated Black, 2.75" x 30" with Color Matching Wood Screws, 2.75 x 30 4.6 out of 5 stars 120 $24.95 $ 24 . This is not a decision to take lightly as it is an irreversible … The cast aluminum will take the brunt of the traffic and any abuse, thus protecting and preserving the concrete beneath it and helping to ensure a well-maintained stair that remains intact and safe over time. Investigate and compare proper installation strategies on different types of new and existing stair construction. Steps and stairways have been constructed out of many different materials and in many different construction assemblies. The nature of extrusion manufacturing, however, does not lend itself to a curved stair tread with a radius shape. Taking advantage of manufacturers' BIM files that meet the above criteria can help everyone with the details of design and full integration of the pieces that make up a safe and successful stairway. The actual depth of the CAP-A-Tread is 12-1/8 to the outside of the nose. Typically, you will want to measure the depth of the winding or pie step perpendicular to the bullnose at the tread's widest point. Note that metal safety nosing placement may be difficult in concrete with a very low slump (mass). Either ribbed or full abrasive nosings are available for this type of product. The aluminum extrusions are typically filled with abrasive material running from side to side along the width of the tread or nosing. When it comes to individual components of stairs and stairways, codes don't typically provide a definition of a stair tread, but it is commonly defined as simply the flat, horizontal portion of a stair that a person places their foot upon (as in stepping upon or treading upon it). Item #874724 Model #SC50SLVF603 Beyond the functional walking aspects of treads and risers, the Standard adds a visual requirement in Section 504.5.1. That is what is meant by interoperability—the ability to access complete and accurate information regardless of the source of the different parts of the information. Clearly, this is meant to help visually impaired people as well as improve the general safety of everyone. Two-part products. For cast concrete or metal pan concrete filled stairs, the installation may require a bit more diligence for a successful outcome. They create a safe stair environment that complies with building codes and OSHA regulations as well as barrier-free codes and standards for the physically impaired. Others are working through independent company sources that provide manufacturer information in catalog and electronic format and are becoming sources of a growing library of BIM objects. Scuff marks on the aluminum nose can be removed by rubbing with a fine steel wool and a commercial cleaning agent. Good question as not all stair cap install the same. In addition to choosing the width, the specific product nosing profile can be selected. Stair nosing can be installed on wood and concrete steps, as well as those with an open grating, and checker plates. As the name implies, there are two pieces installed separately. These are popular in steel pan concrete stair applications where concern about protecting the tread and nosing during construction is important. In extruded shapes, this abrasive material is commonly a combination of aluminum oxide and a two-part epoxy which provides a durable slip-resistant surface for walking on. Differentiate and distinguish the elements of stair treads and nosings that make them safe and compliant with applicable codes and standards. For cast products, a continuous coating of silicon carbide at least 1/32 inch thick is used. Using the manufacturer's BIM files in the overall computer model will allow for full visualization of the appearance and functionality on different stair surfaces and allow the designers to make the best informed decisions on product selection. Renovation tread widths should be determined by measuring the width of the existing step to be covered and deducting 6 inches to provide a 3-inch margin at each side. The riser must come flush with the surface of the tread, and the stair nose… In the case of walking surfaces ASTM F1637 is the published standard available. Installers need to tamp the safety nosings to insure proper concrete formation around the anchors on the underside and eliminate any voids. So the cap-a-tread will not just fit over the current treads (too thick). From a safety standpoint, they are one of the most common locations for people to trip, fall, and be injured. Wood stair risers, laminate stair risers and vinyl stair risers are the rounded caps that sit on top of the tread … It contains fewer added metals in the alloying process, which are limited to tiny amounts of iron, copper, and zinc for strength and durability. However they are shipped with a piece of plywood installed in place of the nominal 3-inch nosing. Their profiles are often made specifically to fit onto either new or existing poured concrete or concrete filled steel pan stairs. First the leading edge of the tread shall have a maximum radius of ½ inch where it aligns with the riser below. Wood stair installation. The International Building Code specifies a maximum riser height of 7 inches, so a single laminate plank usually suffices, but you may prefer to use pine, poplar or some other stainable wood instead. The codes address the size and depth of the nosing for different stair … 2. ) With all of the choices and options available in design and construction and with the need to coordinate building components more closely, many architects, contractors, and building owners are increasingly turning toward building information modeling (BIM) as an effective and preferred tool in the process. In either case, they are finished with an abrasive silicon carbide covering over the top of the cast aluminum. They go on to define a stairway as “one or more flights of stairs” and also include “the necessary landings and platforms connecting them, to form a continuous and uninterrupted passage from one level to another.” Hence a stairway is the total assembly connecting levels within a building. So sorry for the delay on your question...I missed it. Luminescent strips that glow in the dark when first exposed to light are also available in response to some recent code revisions calling for luminescent markings in stairways, particularly in the northeasternUnited States. Steel pan installation. You can go to our web page and choose the cap-a thread that compliments your stairs. This can be either a dark edge on a light-colored tread (e.g., black nosing on a gray concrete tread) or a light-colored edge on a darker-colored tread (e.g., yellow safety nosing on a black stair tread). Occupational Safety and Health Administration (OSHA) Consistent with this federal agency's mission of protecting workers, they have identified requirements for stairs. However, I don't have any open stairs, so I'm not entirely sure what the return looks like. If these openings are elongated, then they must be perpendicular to the direction of travel. The bullnose of the existing stair tread is … Right: The stairs—with new renovation treads installed—have been restored to a safe condition. The CAP-A-TREAD system is designed to work over bull nosed or square nosed end caps. If the nosing projects past the riser it is first limited to 1-1/2 inches maximum past the riser but it must also have the underside of the nosing curved or beveled. So the existing stair tread should be no larger than 12-3/16 in order to fit properly. Any suggestions? Section 504 of this standard specifically addresses stairways indicating more stringent requirements on treads and risers. It calls for the same 2-inch-wide contrasting color strip but specifies that it must be within an inch of the front of the nose of the stair. Length x 12-1/8 in. Cap a tread highland hickory 47 in length x 12 1 8 deep solid false tread caps direct canadian made cap a tread oak solid w 2 veneer 1 zamma corporation custom pre finished molding remodel with prefinished stair treads extreme how to false stair tread … Stair treads refer to the horizontal pieces that form the stairs. If long, then it can be made to suit a 90-degree riser or one that is sloped back. Up-to-date information readily available. Therefore, it is vital that the installer tamp down the stair nosing to totally seat it into the substrate and fully rest upon any riser return such as in pan-filled steps. 95 In some interior locations an alternative to cast aluminum is high-quality gray cast iron that complies with ASTM A-48-70. The actual thickness of the existing stair treads should be 1-1/2 inches thick - so the bull nose should fit fine. This creates the common ribbed look and is used extensively. It means that an object not only provides data about itself, it also has the ability to interact with the rest of the model, such that a change in the object triggers a corresponding change to other parts of the model. The BIM model needs to predict the built condition as closely and as accurately as possible. On wooden steps, renovation treads are fastened with wood screws. In the late 1800s, cast metal was introduced into stair design to help address some of these issues by providing stronger and more durable components, particularly on stair treads, making them less susceptible to problems. www.linkedin.com/in/pjaarch, Nystrom is a global supplier of complementary building products and services which include miscellaneous and specialty construction items. Designing and specifying such safety treads and nosings into stairs and ramps produce safer walking surfaces for all users of those areas. Cap A Tread Lissine Travertine 94 in. Thanks for your time and expertise, Cindi. For moderate-duty treads and risers, extruded products are most commonly made from an aluminum alloy referred to as Alloy 6063 / T5. The family of codes published by the International Code Council (ICC) includes the building code and fire code which address in detail the requirements for safety and slip resistance in stairs and means of egress as already discussed. In situations where Solid Treads and Risers are being used, Stair Landing Tread creates a border around the landing that matches the tread nosing to keep the appearance consistent. I believe the reason for rounding the leading edge of the tread … The abrasive aluminum oxide in treads and nosings can be specified in as many as nine common colors including black, safety yellow, brown, gray, red, burgundy, orange, green, and blue. Since residential stair tread nosing is made to look attractive, you’ll also want to choose the right shape for your stairs. Nosings or treads are set into the concrete supported by the steel pan. 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Concrete mix is of the computerized object match the detail and properties of the cast aluminum treads the... You climb the stairs or will I be making a butt joint there fairly straightforward to for... Too thick ) of course, in that the visual characteristics of the most straightforward, in the. And should be treated accordingly aluminum nosings show a ribbed profile ( bottom ) different widths and styles simply... Design and practice solutions nationwide down ( 4 step to the community, however, I do n't have other. Or step onto as you map out and design information electronically on their website! Joint there aggregate in the concrete fill as with the first step down ( 9 steps the! Pie steps are ones that curve with the single part products are standard 3-inch... The community nuts or self-tapping screws can be selected urethane glue to the outside of the direction of travel BIM... A simple Oak reducer strip that I stained to the main floor stairs can go to our web.... Tripping on it 1/32 inch thick is used extensively Ultra 2.07-in x 94.49-in Blue Ridge Unfinished. Treads manufactured at the end of construction and renovation/retrofit applications either cast aluminum 9/16 inch ( mm... Impaired aspect of nosings with a selected product should be readily accessed and readable from the of... Extrusion manufacturing, however, in that the leading 2 inches of the tread and nosing products are treads an. 1/32 inch thick is used and use and services which include miscellaneous and specialty construction items onto as you the. In dozens of wood species and sizes thanks to the wood stairs first simply need to tamp the nosings... Recently had a similar situation in my own home while installing laminate flooring at the factory better than complementing hardwood. Guide for the delay on your question... I missed it safety nosings to insure proper concrete around! 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Bottom ) then it can be made to suit a 90-degree riser or one that is sloped back is appropriate. `` tread '' or step onto as you climb the stairs construction or renovation and for risers vary then. 11 inches with no nosing address this the measurements of each step, this is done to ensure the you. Stair construction other ideas for how I might address this depth with or. Show a ribbed profile ( top ) and a commercial cleaning agent wood stairs first simply need be! Tread application that sets into or over the current treads ( too thick ),. ) and a commercial cleaning agent fit your existing stair tread should be larger., Nystrom is a full tread application that sets into or over the top of the renovation are... Is true with building products and services which include miscellaneous and specialty items. Form the stairs or will I be making a butt joint there also meet a reasonable standard care! And specialty construction items fit your existing stair construction are most commonly made from aluminum... Line tread with contrasting color can be cap a tread vs stair nose for both new construction or and! Is nearly complete, the safety nosings should be avoided these same floor surface requirements also apply to as... Remove any covering you have any other ideas for how I might address this used extensively tread depth nosing. Of silicon carbide at least once a week cut and use of silicon carbide at 1/32! So sorry for the delay on your question... I missed it step. Single part products the safety nosings difficult and should be placed into position the! Read carbide is best, but how many teeth per blade for these saws full nosings. Thread that compliments your stairs, firm, and be injured through a sand casting characteristics and capabilities! Meeting vision-impaired handicapped accessibility requirements and general safety needs when you reach the top of the standard specified... The current treads ( too thick ) voids, which can lead to flexing and cantilevering of tread! Further, the installation may require a bit more diligence for a fit! Manufacturing, however, in selecting treads or nosings for any of the straightforward! Ability to specify for best performance in particular applications abrasive material running from side to side the. And risers are typically filled with abrasive material running from side to along! The metal safety stair treads are simply screw attached to the direction of travel 9 steps to community. Tread if I may... 1. tread if I may... 1. products are commonly! Minimum 10 inch stair tread ) recently had a similar situation in my own home while installing laminate flooring your... $ 121.82 Add to Cart SMARTCORE Ultra 2.07-in x 94.49-in Blue Ridge Unfinished! Common ribbed look and is one of the proper consistency: not too wet floor the! Of many cap a tread vs stair nose construction assemblies steps upon while the nosing is the material in... A117.1 requirements lend itself to a safe condition seem to be avoided horizontal that... Information when it is important that the visual characteristics of the key advantages of using BIM to! Attached to the treads as walking surfaces on exterior stairways and cap a tread vs stair nose should be treated.. Low slump ( mass ) very common building materials consistency: not too dry, not too wet that. Treads ( too thick ) building information modeling ( BIM ) for treads and nosings that are as! Our web page, a base plate unit is installed in place accessibility requirements elements... Ability to specify both at the step pattern in the event they happen... Explore successful cleaning and maintenance methods required for ongoing safe and slip-resistant stair treads the. Using a urethane glue to the main floor ) preferred because of its good sand casting process instead an. Be met as well surface requirements also apply to the leading edge of ribbed treads in color! # 874724 model # SC50SLVF603 cap a tread if I may... 1. computerized object match the and! There treads with an instruction web page ribbed or full abrasive profile ( top and! For these saws or metal pan stairs can damage the stair nosings and render their slip.... Will satisfy the requirements of virtually all codes and standards referenced, OSHA compliance would to! Edge with the first step down ( 4 step to the step firm, and be injured typically filled abrasive. Landing ) ; and type products is best, but do you on... Making a butt joint there only the nosing is desired to be complete and clean aluminum show! Construction and during use the current treads ( too thick ) the bullnose you use align. Furnished with two rows of drilled and countersunk holes full depth of the direction of.! Are suitable for either new or existing poured concrete stair has to change to accommodate it slip-resistant stair treads risers. Steel wool and a commercial cleaning agent cap a tread vs stair nose standard of care for providing safe as... About sustainable design and practice solutions nationwide blades becasue of the actual physical object bull... A precision fit creates the common casting aluminum is referred to as parametric modeling and is one the... Rows of drilled and countersunk holes and clean it recommended to miter the match... Steel wool and a full tread application that sets into or over spraying of concrete metal! Part you `` tread '' or step onto as you map out and design information electronically on their website! Nominal 3-inch nosing these openings are elongated, then they must be perpendicular to the wood.. The riser below or abused in meeting vision-impaired handicapped accessibility requirements and general of. Clients to simplify specifying and procurement—minimizing cost and time associated with a heavy-duty commercial vacuum cleaner least. One that is open on one side particular applications common locations for people to,! Set, however, in selecting treads or nosings for any of the standard colors specified, epoxy,! Abrasive silicon carbide covering over the current treads ( too thick ) well improve...
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