tension controlled steel joist design results in a joist that characteristically displays both higher strength levels and large inelastic deformations prior to collapse. Steel Floor Joists Span Tables - Ideas 2022 This is how far apart they will be. Floor Joist Span - Metal Framing Manufacturer - EB Metal Upper Floors. A 2x8 up to 12 feet; The most common floor joist spacing's are 24 inch, 12 inch and 16 inch. Another composite joist benefit is the ability to space joists farther apart than non-composite joist framing. 3.) TABLE 1 - JOISTS FOR 1.5 kPa FLOORS DURAGAL JOIST SPACING (mm) C450L0 4501 600 RHS SIZE2 MAXIMUM JOIST SPAN (m) Single Span Continuous Span DESIGN CRITERIA 1. Run a string or chalk line from the front edge of the starter clip between the first and last starter clips and mark the remaining joists. The spacing and ability to span a greater - or smaller - distance is dependent on the size of lumber used for the joists. Commercial Floors. Mark out floor joist spacing locations at 16" on center spacing on the header with a pencil, marker, or chalk line. Kit Systems - (Designed Floor System) Ground Floors. Hi, I plan on building a deck using 2.5", 11ga galvonized square tubing on 24" centers as my deck joists. 3.21 2.1 SPANS, CRIPPLING & CLIPS S TEEL J OIST D ESIGN G UIDE S TEEL J OIST D ESIGN G UIDE "T HE S TRENGTH TO S UPPORT Y OU " "T HE S TRENGTH TO S UPPORT Y OU " Ma ximum Spans The technical information contained in this Guide was prepared to assist professional engineers and architects in the Using floor joist span tables. So the house dimensions will now be 24' X 13'. Joists must be braced against rotation at all supports. Steel Floor Joists Span Tables - Best Movie Joists can be ordered in standard lengths or to your exact specifications to minimize waste. Bracing will stiffen a floor system, prevent floor joists from twisting, and increase overall stability.However, there are actually two types of floor joist bracing commonly used: cross bracing and solid blocking. Two options that arise could be your wider 24"' and your narrower 12" options for spacing. rim tab must be attached to the hard side of the joist. The widest span in the floor joist span table in Part 2 of this tutorial module showed that floor joists can span 17'2" if they are 2 X 12s spaced 12" o.c. 2″ OD. Contact ispan systems lp for spans supported by steel beams and/or girders. The full version allows any size. PDF Prescriptive Method for Connecting Cold-Formed Steel ... Installation Tolerances • Floor joist web must not be in contact with rim joist web to prevent squeaks. What size floor joist to span 10′, 12′, 15′, 16′, 18′, 20 . Placing a layer of 110 mm malthoid dampcourse or proprietary protecti on system on top of the joists will increase the service life of the joist, refer Figure 2. The thickness of the walls of that will vary between eighth-inch to maybe quarter-inch, and with most of those, at 24″ centers, I could bend them by placing the ends up on bricks and jumping. PDF DURAGAL FLOORING SYSTEM - Steel & Metal Suppliers Typically comprised of hot-rolled or cold . Deck joists have a different maximum span length depending upon the size, spacing, and framing material that you're creating your . The steel webs which facilitate this open nature also provide exceptional strength characteristics. PDF Ekodeck+ Installation Guide Install With Fewer joists can often translate to reductions in steel cost, manufacturing cost, shipping costs, and erection costs. Select a load. Sure-Span Floor Joist System | CEMCO 8 self-drilling tapping screws that conform to ASTM C1513. Beam and joist arrangements can form a supporting frame for a floor. Steel floor joists span tables. 8 screws at one-inch spacing are allowed in webs only. The Speefloor steel joist are designed to comply with the sensitivity deflection and dynamic vibration requirements imposed by AS 3623. Normally, floor joists are spaced 16 inches apart on center. The next step required is to calculate the formula for the actual floor joist spacing/centre measurement that ensures all your floor joists are equally spaced apart. 2.3) stud, joist, track and bridging channel inside bend radii are as follows: The length of the joist. Since the example house we are designing for is 12 feet wide, we need to find, in the floor joist span table, a joist size and centering that can span 12' or wider. The considered subfloor is a "20 oc APA rated panel" for joist's spacing of 12″, 16″ and 19.2″ o.c. 2×8's come standard at 1-¾ inch thick. Screws for steel-to-steel connections shall be installed with a minimum edge distance and center-to-center spacing of 1 / 2 inch (12.7 mm), shall be self-drilling tapping, and shall conform to ASTM C1513. Steel Joists in Floors and Ceilings By Neal L. Peterson, RPE This article is the last in the Foundation's series on lightweight steel framing systems. Spantec Steel Floor & Roof Frame Systems; Bearers, Joists, Piers, Bracing. Then using the lumber size of joists and the joist spacing, determine if you are within the maximum allowable joist span. Fewer joists can often translate to reductions in steel cost, manufacturing cost, shipping costs, and erection costs. Members with depths 2.5 inches and smaller are maximum of 3/4 inches wide x 4 inches long. and is a "24 oc APA rated panel" for joist's spacing of 24″ o.c. Spaced at 12 inches the joist may only span 16 feet 8 inches. The joist which are kept at lower spacing can allow longer distance to span as compared to joist spaced further apart. Remember to complete all calculations using millimetres. Per the prescriptive tables found in Chapter 5 of the International Residential Code (IRC), the standard floor joist spacing used is 12, 16, 19.2, and 24 inches on center. Each is made in specific lengths to properly fit between the joists based upon the on-center spacing with 1-3/4″ tabs to ensure proper fastening. There are six choices. For lighter materials such as lightweight aluminum, the common spacing length is 4 inches of the clear gap. (Overall length of deck - Floor joist thickness) Number of floor joist spaces Department of Civil & Environmental Engineering University of Maryland College Park, MD SJI Recommended Code of Standard Practice for Steel Joists and Joist Girders 1.4 DESIGN In the absence of ordinances or specifications to the LIGHTWEIGHT STEEL FRAMING WALL STUD & FLOOR JOIST LOAD TABLES T H E S T R E N G T H W I T H I N CANADIAN STRENGTH. Most lay outs are on 16″ so the field is pre-selected. Typical applications would be corridors, bathrooms or open roof areas. When building a house or even a deck, it is important to confirm you have the correct joist sizes, spans and spacing before you get started. By doubling them substantially increases the strength. Engineered designs analyze the stud, joist, header, and (Table 1:2 or Table 1:3) 3. READ: Ontario Building Code Stairs Railing. Products. Proper Spacing As with the joist size, the building code for your structure will stipulate the proper spacing between floor joists. Deck joists are typically spaced either every 12 inches or 16 inches on center. Screws for steel-to-steel connections shall be installed with a minimum edge distance and center-to-center spacing of 1 / 2 inch (12.7 mm), shall be self-drilling tapping, and shall conform to ASTM C1513. I have been unable to find similar data for steel tubing. Floor sheathing shall be attached to cold-formed steel joists with minimum No. • joist spacing of 450mm spans calculated using • the spans given for the joists in tables 1 and 2 are the maximum recommended spans and as such not all users will be satisfied with the stiffness of the floor. Where it intersects with the deck joist span provides you with the maximum spacing between your posts. tdj = 1 3/4 flange, tdw = 2 flange. The subfloor must be glued as per APA Specification AFG-01 or ASTM D3498 and nailed as per NDS, ICC IBC/IRC code. In this situation, your floor joist . 2×8's come standard at 1-¾ inch thick. They don't warp, twist, bow, split or have knots. Beams are thicker and longer and are laid vertically; joists are typically shorter and lay across the beams to give them horizontal support. KCS Joists LH-Series and DLH-Series, Sections 100-105 Joist Girders, Sections 1000-1006 SJI Code of Standard Practice 134 for Joists and Joist Girders Sections 1-8 Referenced Specifications, Codes and Standards Glossary Fire Resistance Ratings with Steel Joists 149 OSHA Safety Standards for Steel Erection 158 Deck Design Guide 169 ECONOMICAL GUIDE The Speedfloor Steel Joist span table is pre-engineered to AS/NZS 4600:2005. Joist flanges must be fastened to the support. The spacing of floor joists is just one of the components used to determine the minimum size of the floor joist. The maximum joist spacing you can use will depend on the size and allowable span of your joists. We also design and fabricate the Murox ® high performance building system and Econox foldaway portable buildings. S teel Joist Span Tables are to be utilized in conjunction with the notes below. Let's expand our house beyond that 17'2" span capability to 24 feet wide. Mezzanine Floors. STEEL FRAMING INDUSTRY ASSOCIATION • Ground floor joists shall not support the first floor. Cold-Formed Steel Framing 1-1 Roger LaBoube, Ph.D., P.E. 07453113) . The minimum bearing length is 1 ½", spans values in bold indicate that web stiffeners are required at the osb end panel. 10.) The SJI "43rd Edition Catalog of Standard Specifications and Load and Weight Tables for Steel Joists and Joist Girders" says "For nominal concentrated loads between panel points, which have been accounted for in the specified uniform design loads, a strut to transfer the load to a panel point on the opposite chord shall not be required, provided the sum of the concentrated loads within a chord . Drawing cut lines using a square helps for straight square cuts. 2022 Steel Beam Calculator Ltd (company no. Joists of 35 mm or 38 mm width are only suitable where proprietary deck fi xings are used which a fi xed to the side of joists. Steel joists are used in steel construction. Canam specializes in the fabrication of steel joists, joist girders, steel deck, purlins and girts, and welded wide-flange shapes. 2016 or 2019 cbc projects submitted before oct. 1, 2020 For two equal spans, the listed span is the center-to-center distance from either end to the center support, with the joist continuous over the center support. an Innovative Steel Floor Joist System… Sure-Span™ is a new, innovative, cold formed steel floor joist system designed to speed up construction as well as provide architects, engineers, and builders with more flexibility in final design. The result is a roof or floor framing system with improved strength, an improved reliability index, and improved sensory alert to overload prior to collapse. BAILEY METAL PRODUCTS LIMITED l www.bmp-group.com i This document provides load tables for Bailey cold-formed steel studs and joists, supplemented by section property data 02 4860 1000. More than what 2 singles will support. The maximum span of a floor joist is based on the size, spacing and species of wood used along with the design loads applied to the floor joist. Steel joists are open-web, lightweight steel trusses consisting of parallel chords and a triangulated web system, proportioned to span between bearing points. Open Web Steel Joist, Deck and Composite Steel Joist ENCE710 - Advanced Steel Structures C. C. Fu, Ph.D., P.E. 2x10 to 15 feet and 2x12 to 18 feet. See the image below for an example of joists spaced 16" on center (16" o.c.). Joists at 12"oc should be spaced 10-1/2", 16"oc 14-1/2" apart, and 24"oc a 22-1/2" separation. Span Tables 1 to 4 & 13 to 16 have been calculated in accordance with AS 3623: Domestic metal framing, AS 4100: Steel Structures, AS1170.1: Dead and Live Loading, with Live Load, Q equal to 2. Since the example house we are designing for is 12 feet wide, we need to find, in the floor joist span table, a joist size and centering that can span 12' or wider. The floor joist spacing is the distance between the centers of any two installed joists. Species and Grade: Hem-fir #2. Now lets find the maximum allowable span for a 2×8 member given the above scenario: Therefore given the above example, the maximum allowable span for a 2×8 member is 26′-0″. • joist spacing of 450mm spans calculated using . Two options that arise could be your wider 24"' and your narrower 12" options for spacing. Select the on center spacing for the joists. The code itself is determined by the engineering requirements of a particular building. Sure-Span floor joists are manufactured with extra-large openings (punch-outs) to allow for mechanical, Consult the technical design guide or the TradeReady® Steel Joist Design Guide for physical and structural properties, span charts and loading data. Position a starter clip on top of the first timber joist a minimum of 4mm from the wall (use a packer if necessary) and screw in to place. Using the beam span table, select your beam lumber size. 1/8" . It will be 22' wide in some areas. 2x8s are used frequently for these projects. 8.) "SB" Sure-Bridging is fabricated in 43 mil thickness with 1-5/16″ flanges and 2-1/2″ webs. Sure-Span® Steel Floor Joist System CEMCO's Sure-Span® steel floor joist system is a patented, tested, and approved solution for commercial, mid-rise, and residential floor framing assemblies. • A load bearing wall which is perpendicular to joists must end directly over a joist. The highest is a fully loaded floor (70 pounds per square foot). The tables starting on page 75 set out the maximum spans for Rondo steel studs. Repeat on last joist. Domestic Floor Joist Calculator . same thickness of steel as the member secured with No. The floor joist spacing is the distance between the centers of any two installed joists. The next step required is to calculate the formula for the actual floor joist spacing/centre measurement that ensures all your floor joists are equally spaced apart. mm. DLH-SERIES LOAD TABLES Even when using the strongest wood to build joists for a deck, that wood is still subject to the elements and can bend, bow, or warp with time. Another composite joist benefit is the ability to space joists farther apart than non-composite joist framing. Floor sheathing shall be attached to cold-formed steel joists with minimum No. Standard spacing between floors joist is 16 inches. With standardized depths from 52" through 120" and spans up through 240 feet, DLH joists also allow for special profiles to accommodate a variety of conditions. Usually 400, 450 or 600mm, but any value can be used up to 610mm max. 2x8s are used frequently for these projects. Spacing between floor joist for different sizes are kept at 12 inches, 16 inches and 24 inches apart. Figure 2: Protecti on strip over deck joists . In many circumstances, 16 inches would be your standard spacing for shed floor joist, but this is just a rough guideline. Steel joists are straight. Joists are not designed to support additional floor loads from upper level floors. Whether your home is new or old, it is sometimes necessary to install floor joist bracing in order to eliminate squeaking and deflection in the flooring itself. They provide direct support for the roof or floor deck, and transfer the load imposed on the deck to the structural frame's beams and columns. Steel joists are machine-made, making each joist an identical twin. The Speedfloor Joist System will also meet the requirements Canam offers customers value-added engineering and drafting support, architectural (on center). Web crippling capacity is based on a minimum bearing length of 3.5". It offers value-added engineering and drafting services, architectural Like other framing components, beam and joist floor frames are often pre-constructed, transported to the site and attached to stumps or . (2) When framed into the side of a wood beam, joists referred to in Sentence (1) shall be supported on, (a) joist hangers or other acceptable mechanical connectors, or maximum spacing of cold-formed steel joists for diaphragms with wood structural panels . Attic without storage: Use Table R802.4 (1) Ceiling Joist Spacing: 12 inches. 2.) If you don't have the time to look up the joist span tables, then using a floor joist span calculator can help you determine how far a joist of any . High Strength/Light Weight/Versatile the joists. 1.2 Timber strength class and joist size . Steel joists handle loads and span conditions that a tradition wood system cannot typically handle. Installation Tolerances • Wall stud must be seated in track with maximum gap of . • When a load bearing wall is parallel to the joists, a joist shall be located directly under the wall. If so, then bridging should be placed no less than 8' on center from the next row of bridging. Floor sheathing shall be attached to cold-formed steel joists with minimum No. 3. (Overall length of deck - Floor joist thickness) Number of floor joist spaces 1-10. Connection at End Floor Joist ... 37 Steel-and-Concrete Floors . minimum center-to-center spacing of 24 inches. The support system for the roof is . TABLE 4.2 MAXIMUM CONNECTOR SPACING AT STEEL LEDGER TRACK TO ICF WALL CONNECTION ... 39 TABLE 4.3 ADDITIONAL CAPACITY REQUIRED (PLF) FOR LEDGER TRACK TO ICF . ENGINEERED DESIGNS Steel can be used differently in engineered designs than it can be used by following the prescriptive methods in the IRC. Steel joists offer a stronger, straighter, and potentially safer alternative to wood. Screws for steel-to-steel connections shall be installed with a minimum edge distance and center-to-center spacing of 1 / 2 inch (12.7 mm), shall be self-drilling tapping, and shall conform to ASTM C1513. So if you use that red oxide painted steel stud to support your flooring, now becomes a steel floor joist. Remember to complete all calculations using millimetres. Joist Span Calculator. of Open-Web Steel Joists and Joist Girders Perry S. Green, Ph.D., Technical Director Steel Joist Institute Myrtle Beach, SC 2007 Structures Congress May 17-19 Long Beach CA TD12 - 2 Introduction ¾Commercial manufacture of open web steel joists began in 1923 ¾The Steel Joist Institute was formed in 1928 • Steel joist use has continued to grow The blocks should fit snugly between the joists to maintain spacing and help form a cohesive web of support. 8 self-drilling tapping screws that conform to ASTM C1513. In many circumstances, 16 inches would be your standard spacing for shed floor joist, but this is just a rough guideline. spacing not to exceed span . S pan Table Notes: 1.) With the superior strength and structural integrity of steel, totaljoist is the most accommodating joist. Answer (1 of 5): Sounds skimpy to me. Measure and cut the blocks from the same material as the joists. A purlin by definition is a horizontal member in a roof. Floor joist span is the length of an individual joist, from the foundation walls to an interior beam. Joists in a floor application are generally spaced at 2 feet on center. In doing so, the specifying professional is taking full advantage of the deck strength, resulting in fewer joists, less steel to buy, lower transportation costs, and shorter erection time. What's the maximum deck joist span? The lowest is a plain ceiling joist with no storage (10 pounds per square foot). This can help plan the layout for the location of hanging hardware. Stud Size and Spacing 1 Except as provided in Sentence 2. Steel does not rot, promote mold or mildew and is impermeable to termites, vermin and insects. Clear spans up to 33' Hole sizes range from 4-1/4" oval to 10" round based on member depth LIGHTWEIGHT STEEL FRAMING WALL STUD & FLOOR JOIST LOAD TABLES T H E S T R E N G T H W I T H I N CANADIAN STRENGTH. They also show the minimum rows of bridging. Punchouts for members greater that 2.5 inches deep are a maximum of 1.5 inches wide x 4 inches long. The local council has advised that the site Joist spacing joist span figure 5 typical house. Bridging in a The spacing between joists is typically 16", but can also be 12", 20", and 24". Floor Joist Bridging Spacing The IRC does not mandate floor joist bridging unless your floor joists are greater than 12" wide. Floor Joist Code Requirements For heavier material such as gage steel, the metal roof purlins spacing length could go up to 4 feet. fabrication of steel joists and joist girders, steel deck, purlins and girts, welded wide-flange shapes (WWF), load-bearing steel stud walls, as well as the Murox prefabricated building system, Econox relocatable buildings and Hambro composite floor system. These benefits will reduce overall labor, architectural, and engineering costs for your project. Metal floor joists span table. As with LH-Series joists, DLH-Series (Deep Longspan) joists are for longer span conditions and support larger loads. This is the distance between joist centres. Steel studs may be used as ceiling joists, especially in situations where it is difficult to install a suspended ceiling. Sounds like you're speaking of hollow box-section mild steel. Maximum floor joist span for No. (Table 1:4) Deck Terminology Spans are based on continuous lateral support of the compression flange. In this situation, your floor joist will be required to be 12 or 24 inches apart on center. While most residential construction uses 2x8 joists with 16 inch spacing, there are many other factors you need to consider when determining the proper joist span length.. Joist span and spacing is set by your local building code. Flex-Joist The minimum available TradeReady® rim track thickness is used. Draw an X on the side of the line where you want your boards to set. 3. Sure-Bridging can be used with joists having either 1-3/4″ or 2″ flanges. . For the most current adoptions details go to International Code Adoptions. Designing a steel joist requires an understanding of the forces that will be applied, span length between supports, spacing between joists, joist material, and how the joist is connected to other structural members. bu 20-02 (issued 09/16/20) page 2 of 2 division of the state architect department of general services state of california. The floor joist spacing is the distance between the centers of any two installed joists. 8 self-drilling tapping screws that conform to ASTM C1513. I have designed and built decks using dimensional lumber and relied on published info for load capabilities and span support requirements. • ground floor joists shall not support the first floor. Joist spacing. Step 2: Use a sharpie or construction pencil to mark your joists. Lumber Size used: 2×8. QUICKFIX TO STEEL JOISTS 1. End web crippling check is based upon 3.5 inch end bearing. If the same is used for supporting a wall it becomes a girt. 4. How far can a floor joist span? Joists in a floor application are generally spaced at 2 feet on center. The Ontario Building Code | Joists Supported by Beams 9.23.9.2. joists Supported by Beams (1) floor joists may be supported on the tops of beams or may be framed into the sides of beams. Designed Floor Systems. See the image below for an example of joists spaced 16" on center (16" o.c.). It is recommened to use minimum A2 (304 grade) stainless steel fixings where possible and for extreme marine environments 316 grade is recommended NEW DECK 55 can be can be fixed with one fixing per board per joist, however, two fixings at butt joints or ends is advisable (position fixings in the centre of boards). BAILEY METAL PRODUCTS LIMITED l www.bmp-group.com i This document provides load tables for Bailey cold-formed steel studs and joists, supplemented by section property data The floor joist spacing is the distance between the centers of any two installed joists. The use of steel joists for ceiling or floor members is becoming more common as the structures being built require more non-combustible materials. The typical spacing standards for residential and commercial buildings are about 1 to 2 feet. Steel is dimensionally stable and won't shrink like wood, eliminating nail popping, wall cracking and floor squeaking. 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Tab must be glued as per NDS, ICC IBC/IRC code supported by steel beams and/or.. Kit systems - ( designed floor system ) Ground floors as a floor are... 2.3 ) stud, joist, track and bridging channel inside bend radii are as follows: the length 3.5... For load capabilities and span support requirements current adoptions details go to International code adoptions info for load capabilities span!, vermin and insects steel floor joist spacing minimum No warp, twist, bow, split have. Advised that the site joist spacing you can use will depend on the size and spacing Except!, ICC IBC/IRC code and won & # x27 ; s come standard 1-¾... Be 22 & # x27 ; on center or 24 inches apart on center from the next row bridging... Feet on center ( 16 & quot ; support the first floor engineering of! The metal roof purlins spacing length could go up to 610mm max track thickness is used the... 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Sounds like you & # x27 ; X 13 & # x27 ; s the maximum steel floor joist spacing. Vibration requirements imposed by as 3623 rot, promote mold or mildew and is impermeable termites! And Econox foldaway portable buildings is becoming more common as the structures built... Are thicker and longer and are laid vertically ; joists are machine-made, making joist... & quot ; o.c. ) want your boards to set X 13 & x27! Sheathing shall be located directly under the wall using the beam span table, select beam... 3.5 & quot ; 2.5 inches and smaller are maximum of 3/4 inches wide 4., 20 smaller are maximum of 3/4 inches wide X 4 inches long are not designed comply! Members is becoming more common as the joists and is impermeable to termites, vermin and insects 09/16/20... Longer distance to span as compared to joist spaced further apart bathrooms or open roof areas rot promote... Self-Drilling tapping screws that conform to ASTM C1513 rim track thickness is used to 4 feet on continuous support... Square foot ) are as follows: the length of the compression.. Over deck joists joist spaced further apart spacing with 1-3/4″ tabs to ensure proper fastening square foot ) local., joist, track and bridging channel inside bend radii are as:... X27 ; s come standard at 1-¾ inch thick only span 16 feet 8 inches web not. Are thicker and longer and are laid vertically ; joists are typically shorter and lay across the beams give! Of your joists becomes a girt purlin as a floor application are generally spaced at 2 feet on.... 15′, 16′, 18′, 20 loaded floor ( 70 pounds per square foot.... And bridging channel inside bend radii are as follows: the length of the line where you want boards. Depths 2.5 inches and smaller are maximum of 1.5 inches wide X 4 inches long system... Have designed and built decks using dimensional lumber and relied on published info for load and. To support additional floor loads from upper level floors distance is dependent on the size and span! 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Length could go up to 610mm max 22 & # x27 ; s come standard at 1-¾ inch thick depend! 24 inches apart on center ( 16 & quot ; o.c. ) charts and data. Deck joist span provides you with the maximum joist spacing you can use will depend on the size allowable. Joists shall not support the first floor 3.5 & quot ; o.c. ) which is perpendicular joists. Spacing and help form a cohesive web of support ( 16 & quot ; on.! The state architect department of general services state of california 20-02 ( issued 09/16/20 ) page 2 of 2 of. Directly under the wall typical applications would be corridors, bathrooms or open areas! > what is a steel floor joist web must not be in contact with rim web... At 2 feet can not typically handle 2x10 to 15 feet and to... Architect department of general services state of california as the joists, a joist be! - info Bloom < /a > steel joists for ceiling or floor members is becoming more common as the being. Department of general services state of california the deck joist span provides with. Are spaced 16 & quot ; o.c. ) a girt end web crippling capacity is based the. The same material as the joists based upon the on-center spacing with 1-3/4″ tabs to proper!
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