FWA foundation anchors connect the foundation or basement walls to the floor system to resist out-of-plane forces imposed by soil pressure. The FWAZ attaches through the mudsill into the foundation using the Simpson Strong-Tie® Titen HD® heavy-duty screw anchor, eliminating the need for separate anchor bolts into the sill plate. The FWANZ fastens to the mudsill with nails, relying on other anchorage (by Designer) to anchor the sill plate to the foundation. Spacing of the FWA anchors is independent of the joist spacing, allowing for a multitude of options based on soil pressures.
Compatible with solid sawn joists, I-joists and floor trusses
Testing performed on most common rim materials and types
Addresses design needs set forth in Section 1610.1 in the IBC and Section R404.1 in the IRC
Eliminates the need of costly cantilevered foundation designs
ZMAX® coating; see Corrosion Information
Use all specified fasteners; see General Notes.
Connectors must be fastened directly to the outside face of the rim board with (5) 10d x 1 1/2" (0.148" dia. x 1 1/2") long nails.
Connectors must be located within 4" of adjacent joist/blocking for floor joist spacing up to 48" o.c. and may be centered between joists/blocking for 16" o.c. floor joist spacing.
When floor joists are parallel to the rim board, full depth blocking shall be used in the first two bays of the floor per 2012/2015 IRC Section R404.1.
Splice joint not permitted on rim board in same bay unless blocking is placed on both sides of the splice. The maximum sill plate thickness to be used for the FWAZ only shall be 1 1/2".
FWAZ only — must be anchored to the foundation wall with 5/8" x 6" mechanically galvanized Titen HD heavy-duty screw anchor (included).
Cast-in-place anchor bolts may not be used as a substitute.
When I-joist rim material is used, backer blocks must be used. Installed per manufacturer's recommendations.
Lateral (F2) loads are based on load duration factor CD = 0.90 with no further increase allowed.
FWAZ spacing shall be per Designer.
FWAZ must be located within 4" of adjacent joist/blocking for floor joist spacing up to 48" o.c. and may be centered between joists/blocking for 16" o.c. floor joist spacing.
Maximum sill plate thickness shall be 1 1/2".
The Titen HD® heavy-duty screw anchor used in the FWAZ to resist the out-of-plane (F2) forces may also be used to resist in-plane shear forces provided the Designer determines the Titen HD heavy-duty screw anchor allowable loads (refer to C-SAS catalog) and evaluates the combined loading condition with the published F2 loads.