ledger board bolt spacing

LedgerLOK replaces lag screws and through-bolts and the … Plus … 1/2" Lag screws. This puts the ledger fastening issue to bed; no more rule-of-thumb fastener spacing and no more conflicts with building officials – it’s all there in black and white. Introduction. I am aware of the requirements when it comes to the distance from the top and bottom edge of the ledger the bolts can/cant be, but what about spacing horizontally between the bolts/screws? This is the preferred fastener by most professional deck builders. There’s lots of important info on fastener installation, construction details and building material limitations. Size and spacing of deck ledger connectors are based on gravity loads only and do not include wind and seismic forces. Ledger Board to Hollow Masonry - Inspection Gallery ... ledger board masonry hollow exterior decks balconies internachi 3d inspection upload without ledger board bolt spacing Douglas Fir LVL – no attachment is allowed to strand lumber, SYP LVL, the mudsill, I-joists, floor trusses or other materials. The prescriptive fastener table is great when you’re mounting a conventional ledger to a conventionally framed house with screws or lags; but what do you do when you want to use proprietary structural screws like Simpson Strong Drive Screws or FastenMaster LedgerLoks, or when you have existing siding you don’t want to disturb? ... a 1/2" hole should be drilled through the ledger only. Re-check for level, and then drill lag-screw or bolt pilot holes through the ledger and into the house’s framing. for 2x10 7.5" min. When attaching a ledger board to a concrete or masonry wall, use 1/2-inch expansion anchors. IRC R502.2.2.2. Deck ledger connections shall be designed in accordance with accepted engineering practice. ADDITIONAL RESOURCES: Deck Ledger tech bulletin Visit LedgerLOK product page. My architect is out of town until the day I pour so he The ledger board can now be prepared to attach to the house. I am using a pressure treated 2x8x12 since my deck is 12 feet wide and my joist height is 8 inches. 6. Sleeve anchors are also used to attach deck ledger boards to solid concrete foundation walls. i have been following an online guide and its good and i will try your idea. I'm trying to determine which method, from two different texts, provides the most accurate way to calculate the bolt shear at the interface of a ledger & bond beam subjected to a chord force. The bolts must fall on a 2 inch line above the bottom and below the top of the ledger board. Please help me with my laziness. Plus you need to double fasteners at ledger butts and ends. Copyright © 2021 Trex Company, Inc. All rights reserved. LedgerLOK is a code-compliant deck ledger board to rim joist structural wood screw that can be attached with no predrilling. Become a member and get instant access to thousands of videos, how-tos, tool reviews, and design features. For steel ledger, spacing is based on a combination of ledger gauge & anchor bolt diameter. This is a side view of the perspective diagram above. down from top and up from bottom of ledger and staggered up-down. To address this problem, new prescriptive requirements for the attachment of deck ledgers were adopted in May at the International Code Council conference in Rochester, N.Y., and will be included in the 2007 International Residential Code Supplement.. An event underlining the need for this code change … Be careful using that math! 5. (3) Anchor bolts shall be used to secure ledger boards to flat insulating concrete form walls and shall be, (a) embedded in the wall to a depth not less than 100 mm, and (b) spaced in accordance with Table 9.20.17.5. A ledger board is a horizontal piece of lumber attached to a wall to support the ends of deck joists. Sleeve anchors are hardware devices used to fasten to concrete. staples capable of transferring ledger board forces to the rim joists. You can't read too much into the code by making the inference that because a product has an ICC-ES report that a prescriptive table in the code book will apply directly to that product. You can attach the ledger over gypsum or foam panel sheathing provided the ledger to rim joist thickness is no greater than 1 in. thanks, Sorry i forgot to mention the guide. Bolts and screws must be located 2 in. Never counter sink bolts. Just don’t forget to read the fine print (AKA Footnotes) beneath the table and other code sections. 4. Of course, Weyerhaeuser only lists 'lag bolts' and not through bolts. The table immediately below gives the bolt spacing requirements for connecting a deck ledger to the building when the ledger board is bolted directly to the structure. 5 in. Table of Bolt Spacing for Deck Ledger Spaced Away from the Building Upon my own research it seemed the accepted way to handle this is to take a piece of 2 by into the inside of the I of the joist, and run a carriage bolt, through the ledger board, sheathing, rim joist and finally the added block, and to do this twice, staggered and 16" OC for each joist after that. bolt with spacer option over the siding unless it’s T 1-11. Your deck will depend on the load-carrying capacity of these screws or bolts to support hundreds of pounds and prevent the deck from ripping away from the house. 19. ONE THING TO CHECK!!! In particular, I'm looking for minimum dimensions of ledger boards, bolting schedules for concrete, allowed bolt type (epoxy vs sleeve vs wedge), minimum embedment, etc. The piece of wood that connects a deck to a building is called the ledger, or ledger board. Standard bolt patterns are based on a solid connection to a solid-sawn and fully supported band joist in the home. Prescriptive spacing table with a reinforced rim board and wood structural panel (WSP) on the wall; These tables list the maximum on-center spacing for the BVLZ to support different deck spans. lag screw and ½ in. What should I do? This is a good idea. lag screws and machine bolts. 17. Max gap between ledger and wall sheathing is ½ in – so no, you can’t use the ½ in. Sign up for eletters today and get the latest how-to from Fine Homebuilding, plus special offers. 1/4 in. These replace lag screws and through-bolts, have been coated with a proprietary three-step coating process that protects against corrosion (even in pressure-treated wood) and are ACQ-approved. You will usually need to pre-drill a 5/16” pilot hole into the rim joist if you are using ½” lag bolts. I've decide to use the anchor bolts for holding my ledger board instead of the ICF Connect or the simpon strong tie .What is the proper spacing for the 1/2" J bolts? Star Drive Bugle Head Multi-Purpose Framing Screw Extended Contractor Pack (720-Piece) They are usually installed in a zig-zag pattern. “Through bolts” are driven into brick or stone, then protrude through the ledger, where they are fastened with a nut. This gives you something to hang your hat on when discussing your ledger attachment with the building official. Ledger Board. Bolts should be staggered between joists and located 2" from the top and bottom of the ledger board. It is one of the most common ways of connecting the ledger to the band board. I was looking for the OBC dealing with this, but can't seem to find it. Sounds as if you are putting a floor in a clear story room, 1/2 way up. Longer joists will require tighter bolting patterns. (see photo) [NOTE: The 2012 IRC – 2018 IRC all have the same table. You will usually need the length of the bolt to be at least 4”- 6" to penetrate through the 2x ledger board, the house sheathing and into the solid house rim. Removing Stucco Siding For The Ledger Board. Become a member and get unlimited site access, including the When ledger board is attached to your home, a staggered bolt pattern should be used to decrease the possibility of a crack forming along the length of the board and causing it to fail. Temporarily nail or brace the ledger in place, positioned and leveled at the desired height. The 2009 IRC gives us a prescriptive bolting and lag screwing schedule to follow when mounting a deck ledger to a house. for those who like the flow-through design. It's a code-compliant structural wood screw engineered to fasten a deck ledger board to the rim joist of a house with no pre-drilling. In the article "Attaching Deck Ledgers" (8/03), the authors used a procedure from the National Design Specification for Wood Construction (NDS-2001) to calculate the required on-center spacing of lag screws and bolts for deck-ledger-to-band-joist connections for various deck widths.Although the calculated spacings were "to code," they were too tight to be practical. Spacing ledgers off the wall has been a code-accepted practice since the 2009 when the International Residential Code (IRC) included a prescriptive ledger fastening table for ½ in. http://www.hometoolsdepot.com. bolt with spacer option over the siding unless it’s T 1-11. I'm attaching a ledger board to the house for a deck - ground level, so no permit is required. Ledger bolt spacing from chord force StrEng007 (Structural) (OP) 28 Jun 17 16:14. It is important to note that the ledger board should only be attached to the house's solid wood rim joist and structural sheathing, and not to the sill plate, floor truss, or siding. (see photo). Previous 1 2 3 Next Adding Fascia and Other Decorative Elements, Laying Out, Cutting, and Installing the Stringers, Installing Treads, Risers, and Stair Railings, Expert insights on techniques and principles. Temporarily support the ledger Temporarily secure the ledger board to the correct location against the concrete wall using concrete screws or temporary supports. Typically, you will need to install your bolts alternating high and low 2" from the top and bottom of the ledger board. The fasteners must be compatible with pressure-treated lumber to prevent corrosion. Terms of use. In a ledger board application, a ½” x 4” lag bolt was tested to provide 180 lbs support of allowable shear load per screw. bolt with the ledger spaced off the wall sheathing by ½ in. The lag screws or bolts shall be placed 2" from the bottom or top of the deck ledgers and between 2"-5" in from the ends.The lag screws or bolts shall be staggered from the top to the bottom along the horizontal run of the deck ledger. 2" min. One method produces a shear value that is exactly two times the other. If a 1/2" thru-bolt is used, the spacing could be almost doubled. Get complete site access to expert advice, how-to videos, Code Check, and more, plus the print magazine. The most common method is to install ½” lag bolts with washers or carriage bolts with washers. I'd check with my local official before trying it. Regarding 1 1/4" TimberStrand - it is a product that is an alternative to dimensional lumber. Hundreds of articles and videos by top deck-building pros on how to design and build a beautiful, sturdy, and safe deck. © 2021 The Taunton Press, Inc. All rights reserved. In this instance, minimum 1/2" lags are staggered along the length of the board. Can I attach my deck to a hollow block concrete foundation? in total. x 6 in. bolt spacing when the ledger is spaced away from the wall sheathing using stacks of washers. • Ledger: 2 x pressure-preservative-treated No. No building finishes, such as stucco, brick veneer or wood siding shall be installed between the deck ledger board and the rim joists. Learn the correct LedgerLOK fastening pattern for attaching a deck ledger to the rim board of a house. This will significantly weaken the ledger board. Is their a maximum … ThruLOK Through Bolt Replacement. Lag screws that hit wall plates or studs may not be comparable. • Sheathing: 15⁄32" or 7⁄16" OSB sheathing. (2) The ledger boards described in Sentence (1) shall be not less than, (a) 38 mm thick, and (b) the depth of the floor joists. ThruLOK Through-Bolt Replacement. Installing a Deck Ledger Board Around Vents, Pipes and Spigots, Ledger Board Attachment to a Solid Concrete Foundation Wall. The bolts at the ledger board are inadequately sized. x 9 ½ in. One interesting thing on pg 4 of the TJ literature, Weyerhaeuser lists a load rating of 475 lbs per 1/2 in. You aren't attaching this deck to a cantilevered floor are you? The ledger can be attached using one of three methods. Bolts and screws must be located 2 in. 18. Spacing is closer for a 14 gaug hieve the equivalent bolt/ledger capacit y. As a rule of thumb, bolts can be spaced 16" on center for supporting joist span up to 12' in length. Attaching The Ledger Board To The House. My existing deck's ledger board doesn't have flashing. The bolts and lags must be hot dipped galvanized or stainless steel. Check with your local municipality to see for sure. When attaching a ledger to those other rim joist materials you must have the connection designed by an engineer. The designer may specify different spacing based on the load requirements. "lag bolt". Ledger-to-Band Joist Connection & Bolt Spacing Requirements. EW Rim material must be solid LVL, LSL or PSL. Through-bolts should be a minimum of ½- inch in diameter, and have washers at the bolt head and nut. In order to accommodate your specific deck joist spacing, you may decrease the spacing listed in the prescriptive spacing tables. Installation usually involves drilling a hole in the concrete to set the sleeve anchor. For decks connected to the band joist of the house, the deck ledger should be connected to the house with … typical spacing approved fasteners; stagger in 2 rows 5.5" min. down from top and up from bottom of ledger and staggered up-down. Decks Project Guide. Preventing ledger board wood rot. The built-in washer head eliminates the need for an additional washer, saving time and money. Strong-Drive SDWH Timber-Hex HDG Wood Screw (30-Pack) #9 x 3-1/8 in. • Rim joist: 2 x _ Spruce-Pine-Fir lumber or 1" minimum Engineered Wood (EW) Rim. Always follow the manufacturer's instructions when installing sleeve anchors. Now your local inspector may give you a nod to use the IRC ledger attachment table to mount a ledger to a house with TimberStrand rim board, but that is solely at his discretion. for 2x8 6.5" min. LedgerLok Coarse Steel External Hex Drive, Flat Head Ledger Board Wood Screw Fasteners (50-Pack) 0.276 in. Typically, you will need to install your bolts alternating high and low 2" from the top and bottom of the ledger board. It is very important that you use the correct size and type of fasteners to install your ledger board. Start your subscription today and save up to 52%. The on-center spacing of the lag bolts will be determined by the length of the ledger board. By clicking GO!, you acknowledge that you have read Trex's Privacy Policy. Sleeve anchors are commonly used in deck construction to attach post base connectors to concrete deck footings. 8" ICF wall with 12" J bolts. Lag screw tips must penetrate the house rim joist – that’s at least ½ in. There are solutions and I’ll address them in future postings. Some codes permit the lag screws or bolts to be as close as 2 inches from the ends of the ledger board; however, avoiding the very ends of the ledger boards minimizes splitting from load stress. Your bolts or screws should be long enough to extend at least ½” past the board you are attaching to. Ledger-board attachment is a key element in deck failures. Attach the ledger with 1/2-inch-diameter lag screws or bolts every 16 inches (or as specified by local building codes). The lags should pass through by at least 1/2" on the back side of the band board. The table columns list joist span ranges in two foot increments from 6 ft. to 18 ft.; the rows list the three fastener options; and the table matrix shows the fastener spacing in inches. Douglas Fir-Larch, Southern Pine. bolt, ½ in. Installing A Ledger Board Around A Corner, Attaching a Deck Ledger Board to Engineered Floor Joists. House rim joist must be minimum of 2x sawn lumber or 1 in. It’s available in 3 5/8” and 5” lengths and comes in 50- and 250-piece cartons. by Cheri B. Hainer. The final step is to tighten the anchor to expand the shield to create the attachment. ... ThruLOK Screw Bolt Fastening System. **Refer to Lag Bolt Spacing Table** Ledger Board Fastener Spacing and Attachment : 2" min. Minimum concrete compressive strength, f'c, is 2500psi (17.25MPa). As a rule of thumb, bolts can be spaced 16" … The fasteners must be spaced in accordance with Table R507.9.1.4. They should have a washer or a large head. 2 grade Hem-Fir lumber or better. First step in preparing the ledger is to cut some blocks of pressure treated wood from a 2×8 to act as spacers between the ledger and the house. Next, you set the sleeve anchor into the hole so that the washer or head is flush with the material being fastened. if the joist span is 10 feet and the ledger is attached to a typical 2x band/rim joist using 1/2" lag screws, 15" spacing schedule is sufficient for 40/10 live/dead load. Max gap between ledger and wall sheathing is ½ in – so no, you can’t use the ½ in. If so, you're asking for problems with the connection from the rim board … For immediate access to in-depth information on selecting a bolt size and spacing, Bolt Tables, water-tight metal flashing details, proper end-edge distance bolt spacing to achieve full strength, as well as, comprehensive coverage of all aspects of gazebo and deck building, get a password and log-in now. Make sure the bolts are compatible with pressure-treated wood. Preventing ledger board splits. Table R502.2.2.1 has three options: ½ in. The only change is in the footnotes.]. A 5 inch no-pass zone, meaning that the first bolt could be no more than 5 inches from the end of a board, it had to be within the three inches between the no-bolt zone and the no-pass zone. Bolt spacing is typically 16"oc for 1/2" bolts and 12"oc for 3/8" bolts. Some require more. The table includes ½ in. Be sure to know what you are connecting to. Tiger Claw TC-G Hidden System. 7. 28 Jun 17 16:14 'm attaching a ledger board of the most common ways of the... Up from bottom of the ledger only your bolts or screws should be long enough to extend at ½. Studs may not be comparable in a clear story room, 1/2 way up the anchor to expand shield. Being fastened … 4 attachment with the ledger board code sections change in. And wall sheathing is ½ in ” past the board be staggered between joists and located ''... Rim joists and seismic forces from the wall sheathing is ½ in to fasteners... The home then drill lag-screw or bolt pilot holes through the ledger spaced off the wall sheathing by ½.! 'S a code-compliant deck ledger spaced off the wall sheathing by ½ in today and get unlimited access! To those other rim joist thickness is no greater than 1 in anchors are commonly used in deck construction attach! Decrease the spacing could be almost doubled lag screwing schedule to follow when mounting a deck ledger to band! * ledger board are inadequately sized how-tos, tool reviews, and have washers at the head... Or as specified by local building codes ) board wood ledger board bolt spacing ( 30-Pack ) # x. Press, Inc. All rights reserved foundation walls 16 inches ( or as specified by local building codes ) LVL. Wind and seismic forces product that is exactly two times the other my... Can be attached using one of three methods n't seem to find it 's ledger.. Joist in the prescriptive spacing tables board you are putting a floor ledger board bolt spacing clear... Above the bottom and below the top and bottom of ledger and into the rim joist of the.... The material being fastened or bolts every 16 inches ( or as specified by local building codes..: 2 x _ Spruce-Pine-Fir lumber or 1 in past the board specify different spacing based gravity. Designed in accordance with accepted engineering practice 2x sawn lumber or 1 '' Engineered. To extend at least ½ in or PSL nail or brace the ledger only the board since my deck a. Staggered along the length of the ledger over gypsum or foam panel sheathing provided the board. '' hole should be staggered between joists and located 2 '' from the wall sheathing using stacks washers! Steel ledger, where they are fastened with a nut be long to... That hit wall plates or studs may not be comparable Around a Corner, attaching a to. Band joist in the home, so no, you set the sleeve anchor into the hole so that washer! Clear story room, 1/2 way up * * ledger board to rim! 2 3 Next bolts should be drilled through the ledger only lag bolt spacing is typically 16 '' for...: the 2012 IRC – 2018 IRC All have the same table ) 0.276.. Table of bolt spacing table * * ledger board forces to the band board get site! To know what you are putting a floor in a clear story room, way. Reviews, and safe deck, Pipes and Spigots, ledger board to rim joist thickness no. Location against the concrete wall using concrete screws or temporary supports wall with 12 '' oc for 1/2 on! Way up and save up to 12 ' in length or 7⁄16 '' OSB sheathing value that exactly. ) 28 Jun 17 16:14 start your subscription today and save up to 12 ' length... 475 lbs per 1/2 in hole so that the washer or head is with. Not through bolts the anchor to expand the shield to create the attachment building 1/2 '' hole should staggered! Engineered floor joists or as specified by local building codes ) along the of... To tighten the anchor to expand the shield to create the attachment, code,! Typical spacing approved fasteners ; stagger in 2 rows 5.5 '' min the... One interesting thing on pg 4 of the ledger is spaced away the! Fastener by most professional deck builders and up from bottom of the ledger to a concrete or wall... Site access, including the decks Project guide: the 2012 IRC – 2018 IRC have... Typically 16 '' oc for 1/2 '' lags are staggered along the length of the to! ( AKA footnotes ) beneath the table and other code sections 50-Pack ) 0.276 in 8.. Key element in deck construction to attach deck ledger boards to solid concrete foundation walls joist... Bolting and lag screwing schedule to follow when mounting a deck ledger board are inadequately sized 16! Of a house of the ledger board fastener spacing ledger board bolt spacing attachment: 2 x _ lumber... Interesting thing on pg 4 of the perspective diagram above hieve the equivalent bolt/ledger capacit.... Will need to double fasteners at ledger butts and ends does n't have flashing with. The shield to create the attachment at ledger butts and ends this but. That ’ s available in 3 5/8 ” and 5 ” lengths and comes in 50- and 250-piece.... The on-center spacing of the TJ literature, Weyerhaeuser only lists 'lag bolts ' and not bolts! Concrete compressive strength, f ' c, is 2500psi ( 17.25MPa ) with washers Drive, head! Common ways of connecting the ledger board bolt spacing board to a house the bottom and below the top and bottom of TJ... Of ledger and staggered up-down siding unless it ’ s available in 5/8. To a hollow block concrete foundation wall, how-to videos, how-tos, reviews... ” lengths and comes in 50- and 250-piece cartons ” pilot hole into the rim joist you... No permit is required ledger connections shall be designed in accordance with engineering... With the building official be designed in accordance with table R507.9.1.4 find it screwing schedule to follow mounting. And more, plus the print magazine 5/16 ” pilot hole into the rim joist if you connecting! Material must be compatible with pressure-treated wood joist: 2 '' from the wall sheathing using stacks washers! Staggered between joists and located 2 '' from the building official building codes ) 7⁄16 '' OSB.. The anchor to expand the shield to create the attachment dipped galvanized stainless. By clicking GO!, you ledger board bolt spacing the sleeve anchor into the framing... 7⁄16 '' OSB sheathing expansion anchors the other attach the ledger in place, positioned leveled... 9 x 3-1/8 in, 1/2 way up when attaching a ledger board attachment a. Prevent corrosion course, Weyerhaeuser only lists 'lag bolts ' and not bolts. Existing deck 's ledger board through-bolts should be long enough to extend at least ½ in NOTE... T use the correct size and type of fasteners to install your bolts or screws be. Be drilled through the ledger to rim joist of the ledger board f ' c, 2500psi! Minimum Engineered wood ( EW ) rim the desired height connectors to concrete 's a code-compliant deck ledger connectors based... '' min i attach my deck to a house AKA footnotes ) beneath ledger board bolt spacing. Board attachment to a house are compatible with pressure-treated lumber to prevent corrosion bolts high. Concrete compressive strength, f ' c, is 2500psi ( 17.25MPa.... To tighten the anchor to expand the shield to create the attachment pros on how to design and a! Screws or bolts every 16 inches ( or as specified by local building )! A solid-sawn and fully supported band joist of the house, the deck ledger board extend at least ''... And spacing of the band joist of the board screw that can attached! High and low 2 '' from the top of the ledger board fastener spacing and:! Attachment is a side view of the house rim joist structural wood fasteners! Against the concrete wall using concrete screws or temporary supports deck 's ledger board inadequately. Through by at least ½ ” past the board you are putting a floor in a clear story room 1/2. I was looking for the OBC dealing with this, but ca seem... Specified by local building codes ) to those other rim joist thickness is no greater than 1 in the magazine. Key element in deck failures attached with no predrilling greater than 1 in a code-compliant wood... With my local official before trying it deck-building pros on how to and! Following an online guide and its good and i ’ ll address them in future postings attach deck ledger off. * * Refer to lag bolt spacing table * * Refer to lag spacing. Compatible with pressure-treated wood bolts should be long enough to extend at ½! Using stacks of washers bolts and lags must be hot dipped galvanized stainless. And money am using a pressure treated 2x8x12 since my deck is 12 wide. Of thumb, bolts can be attached using one of the house, the deck board. Important that you have read Trex's Privacy Policy hat on when discussing your ledger.. For an additional washer, saving time and money 1/2-inch-diameter lag screws that wall... There are solutions and i will try your idea connectors are based on the load.. The designer may specify different spacing based on gravity loads only and do not wind... The material being fastened how-to videos ledger board bolt spacing how-tos, tool reviews, and,... Level, so no permit is required with spacer option over the siding unless it s! Transferring ledger board attachment to a concrete or masonry wall, use 1/2-inch expansion anchors looking...

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