x 6 in. The designer may specify different spacing based on the load requirements. As a rule of thumb, bolts can be spaced 16" on center for supporting joist span up to 12' in length. • Ledger: 2 x pressure-preservative-treated No. 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. There are solutions and I’ll address them in future postings. LedgerLok Coarse Steel External Hex Drive, Flat Head Ledger Board Wood Screw Fasteners (50-Pack) 0.276 in. © 2021 The Taunton Press, Inc. All rights reserved. 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. Check with your local municipality to see for sure. ThruLOK Through-Bolt Replacement. Preventing ledger board splits. • Sheathing: 15⁄32" or 7⁄16" OSB sheathing. ADDITIONAL RESOURCES: Deck Ledger tech bulletin Visit LedgerLOK product page. 8" ICF wall with 12" J bolts. Plus you need to double fasteners at ledger butts and ends. ... a 1/2" hole should be drilled through the ledger only. Sign up for eletters today and get the latest how-to from Fine Homebuilding, plus special offers. **Refer to Lag Bolt Spacing Table** Ledger Board Fastener Spacing and Attachment : 2" min. (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. It is one of the most common ways of connecting the ledger to the band board. For decks connected to the band joist of the house, the deck ledger should be connected to the house with … Longer joists will require tighter bolting patterns. 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. Be careful using that math! 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. bolt with the ledger spaced off the wall sheathing by ½ in. If a 1/2" thru-bolt is used, the spacing could be almost doubled. 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. 1/2" Lag screws. ThruLOK Through Bolt Replacement. Lag screws that hit wall plates or studs may not be comparable. typical spacing approved fasteners; stagger in 2 rows 5.5" min. Bolts and screws must be located 2 in. 17. down from top and up from bottom of ledger and staggered up-down. in total. 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. Preventing ledger board wood rot. (see photo) [NOTE: The 2012 IRC – 2018 IRC all have the same table. Terms of use. for 2x8 6.5" min. 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. Douglas Fir LVL – no attachment is allowed to strand lumber, SYP LVL, the mudsill, I-joists, floor trusses or other materials. For steel ledger, spacing is based on a combination of ledger gauge & anchor bolt diameter. The only change is in the footnotes.]. Learn the correct LedgerLOK fastening pattern for attaching a deck ledger to the rim board of a house. "lag bolt". Some require more. The bolts at the ledger board are inadequately sized. The fasteners must be compatible with pressure-treated lumber to prevent corrosion. This gives you something to hang your hat on when discussing your ledger attachment with the building official. Become a member and get instant access to thousands of videos, how-tos, tool reviews, and design features. The ledger can be attached using one of three methods. What should I do? Typically, you will need to install your bolts alternating high and low 2" from the top and bottom of the ledger board. Star Drive Bugle Head Multi-Purpose Framing Screw Extended Contractor Pack (720-Piece) One interesting thing on pg 4 of the TJ literature, Weyerhaeuser lists a load rating of 475 lbs per 1/2 in. Never counter sink bolts. Start your subscription today and save up to 52%. Just don’t forget to read the fine print (AKA Footnotes) beneath the table and other code sections. I'm attaching a ledger board to the house for a deck - ground level, so no permit is required. The 2009 IRC gives us a prescriptive bolting and lag screwing schedule to follow when mounting a deck ledger to a house. (see photo). 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? 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. The piece of wood that connects a deck to a building is called the ledger, or ledger board. Regarding 1 1/4" TimberStrand - it is a product that is an alternative to dimensional lumber. Is their a maximum … Tiger Claw TC-G Hidden System. The table includes ½ in. EW Rim material must be solid LVL, LSL or PSL. 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. Max gap between ledger and wall sheathing is ½ in – so no, you can’t use the ½ in. 4. There’s lots of important info on fastener installation, construction details and building material limitations. Douglas Fir-Larch, Southern Pine. for those who like the flow-through design. 5 in. When attaching a ledger to those other rim joist materials you must have the connection designed by an engineer. 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. This is a side view of the perspective diagram above. Table of Bolt Spacing for Deck Ledger Spaced Away from the Building This is a good idea. If so, you're asking for problems with the connection from the rim board … bolt, ½ in. Hundreds of articles and videos by top deck-building pros on how to design and build a beautiful, sturdy, and safe deck. In a ledger board application, a ½” x 4” lag bolt was tested to provide 180 lbs support of allowable shear load per screw. Removing Stucco Siding For The Ledger Board. 19. Your bolts or screws should be long enough to extend at least ½” past the board you are attaching to. LedgerLOK is a code-compliant deck ledger board to rim joist structural wood screw that can be attached with no predrilling. Size and spacing of deck ledger connectors are based on gravity loads only and do not include wind and seismic forces. This is the preferred fastener by most professional deck builders. Ledger Board. The built-in washer head eliminates the need for an additional washer, saving time and money. Sleeve anchors are also used to attach deck ledger boards to solid concrete foundation walls. They are usually installed in a zig-zag pattern. 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. 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. Typically, you will need to install your bolts alternating high and low 2" from the top and bottom of the ledger board. Copyright © 2021 Trex Company, Inc. All rights reserved. 6. Introduction. 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. Sounds as if you are putting a floor in a clear story room, 1/2 way up. Installing A Ledger Board Around A Corner, Attaching a Deck Ledger Board to Engineered Floor Joists. N'T attaching this deck to a house with no pre-drilling f ' c, is 2500psi 17.25MPa. Of ledger and wall sheathing using stacks of washers anchor bolt diameter see for sure sheathing: 15⁄32 '' 7⁄16. 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