URFP/FRFP Retrofit Foundation Plates

The URFP universal retrofit foundation plate is the new, improved version of the UFP, offering increased load while maintaining the same adjustability during installation. Ideal where there is minimum vertical clearance, the URFP provides a retrofit method to secure the mudsill to the foundation. This new design allows installation flexibility when the mudsill is offset or inset from the foundation edge. With its combination of longitudinal embossments, stiffening darts and scalloped slotted holes, the URFP allows for a one-for-one replacement of 1/2" or 5/8" mudsill anchors as well as fixity to both the SDS screws and required concrete anchorage.

The next generation FRFP flat retrofit foundation plate connects the mudsill to the foundation and provides lateral load resistance. This new design allows the Designer to maintain the same prescriptive requirements when filling the original three holes, or as an alternate, fill the newly added two optional triangle holes and utilize increased loads and greater allowable spacing.

Material

• URFP — 14 gauge; FRFP — 7 gauge

Finish

• Galvanized. May be ordered HDG; contact Simpson Strong-Tie. See Corrosion Information.

Installation

• Use all specified fasteners; see General Notes.
• Loads are based on test results using Simpson Strong-Tie^® Strong-Drive^® 1/4" x 3" SDS Heavy-Duty Connector screws, which are supplied with the URFP.
• For URFP, alternate lag screws will not achieve published loads.
• FRFP shall use a minimum Strong-Drive SDS Heavy-Duty Connector screw length of 2 1/2" plus the shim thickness. FRFP may be installed with 1/4" HDG lag screws. Follow code requirements for predrilling.

Related Links

• Wood Construction Connectors Technical and Installation Notes
• General Notes

Catalog Pages

• C-C-2017 (Wood Construction Connectors), page 45

Related Literature

Wood Construction Connectors Catalog

C-C-2017

Complete product and application information, as well as load tables and installation information, for more than 3,000 wood-to-wood, wood-to-concrete and wood-to-masonry connectors.

Catalog

• 
  Conectores para la construcción en madera 2017–2018

  C-C-2017SP

  Información completa de productos, de la aplicación, de las tablas de cargas y de la instalación, para más de 3,000 conectores de madera a madera, madera a concreto y concreto a mampostería.

  Catalog
• 
  Next-Generation Solutions for Foundation Retrofits

  F-C-URFP-FRFP17

  A flier providing product information for the new URFP and FRFP foundation plates, as well as technical information and engineering table.

  Flier
• 
  Seismic Retrofit Guide

  F-SEISRETRGD12R

  A guide for homeowners to aid in the inspection and potential retrofit of their homes using Simpson Strong-Tie products to improve the chances of surviving a seismic event.

  Flier
• 
  Soft-Story Retrofit Solutions for Northern California

  F-L-20NCSSR17

  A flier offering a variety of Simpson Strong-Tie state-of-the-art structural solutions specifically designed for soft-story retrofits for the recent Northern California soft-story retrofit mandate.

  Flier
• Show 2 More
  Show Less

Product Information Tables

Prescriptive Spacing for URFP and FRFP to Replace Sill Anchor Bolts

1. 'Prescriptive' denotes spacing requirements per the IEBC and designs per the IRC and conventional provisions of the IBC.
2. For design in accordance with the IEBC Chapter A3, the URFP may be used as a one-for-one replacement for the alternate connections shown in Figures A3-4A, A3-4B, and A3-4C.
3. FRFP with five Strong-Drive® SDSs may be used as a one-for-one replacement for 5/8" anchor bolts.
4. Spacing is based on the parallel to plate load direction.
5. 5/8" anchor bolt required for Seismic Design Category E.

Load Tables

    These products are available with additional corrosion protection. Additional products on this page may also be available with this option, check with Simpson Strong-Tie for details.

1. Allowable loads have been increased for wind or earthquake loading with no further increase allowed; reduce where other load durations apply.
2. Each anchor bolt requires a standard-cut washer. The Simpson Strong-Tie Titen HD® heavy-duty screw anchor does not require a washer.
3. Nominal embedment depth for post-installed anchors must be a minimum of 4" and is for use with SET-XP® or AT-XP® structural anchoring adhesives or Titen HD screw anchors.
4. For redwood mudsills, reduce F1 on FRFP to 820 lb. (1,395 lb. for five screws) and on URFP 10 1,180 lb.
5. For installation on SPF/HF sill plates, use 0.86 x DF/SF allowable load.
6. For additional retrofit information see flier F-SEISRETRGD

Code Reports