Mounting on wood & steel
The ICF Ledger Connector System is engineered to solve the challenges of mounting wood or steel ledgers to walls built with insulated concrete forms (ICF).
The ICFVL is a 14-gauge galvanized steel connector designed to provide both vertical and lateral in-plane resistance. The embedded legs are embossed for additional stiffness and the holes allow for concrete to flow through and around the connector. The exposed flange on the face of the ICF provides a structural surface for mounting either a wood or steel ledger.
Snap a line for the bottom of the ledger and mark the on-center spacing.
Use the ICFVL to mark the kerf locations in the ICF
Cut the kerfs as marked
Insert the ICFVL flush to the face of the ICF
Use a screw through diamond hole in face of ICFVL and into web to hold in place during concrete pour (remove prior to ledger installation).
Attachment of wood ledgers is easily accomplished by the use of ICFVLW, or ICFVL-CW connectors. They are designed similarly, the difference is that ICFVL-W are made for lumber dimensions (fits 1-1/2” material) where ICFVL-CW are made for LVL dimensions (fits 1-1/4” material).
ICFVL-CW or W installation
Slip the appropriate ledger connector underneath the wood ledger.
Install the eightICF-D3.25 screws partially into the ledger. For denser wood species such as LVL and other EWP products, predrilling may be necessary. Predrill ONLY the wood ledger with 5/32" drill bit.
Position the bottom of the ledger level to the chalk line and drive the screws through the wood and into the ICFVL.
All screws should be located at least 1/2" from the edge of the ICFVL. Note: Do NOT splice at the ICFVL-W or ICFVL-CW location. However, connectors should be no more than 12” from the end of the ledger.
Notes from Simpson Strong-Tie®
- For denser wood species (specific gravity ≥ 0.50) such as LVL and other EWP products, predrilling may be necessary. Predrill the wood ledger only with 5/32" drill bit.
- These products are not intended for use with preservative-treated lumber.
- Do not splice ledger at ICFVL location.
- No load duration increase is allowed. v. Minimum concrete compressive strength (f'c) is 2,500 psi. vi. Use the unity equation when applying vertical and lateral loads simultaneously. Design Download/Allowable Download + Design Lateral Load/Allowable Lateral Load ≤1.0.
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