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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. Using fewer than 20 nails in the studs/post will reduce the capacity of the connection. To calculate a reduced capacity use 199 lbs. per nail for DF/SP or 172 lbs. per nail for HF/SPF. Minimum length of extent of reduced nails may not be less than a 21" as is shown in graphic.
  2. Nails in studs/post shall be installed symmetrically. Nails may be installed over the entire length of the strap over the studs/post.
  3. The minimum 3" wide beam may be made up by double 2x members.
  4. MSTC48B3 and MSTC66B3 installed over wood structural panel sheathing up to 1/2" thick achieve 0.85 of table loads.
  5. PSL beam may be used in lieu of standard dimension lumber beam with no load reductions.
  6. Multiply allowable loads by 1.85 to attain an allowable load for installations where two straps have been installed with a 1 1/2" clear space between straps.
  7. Structural composite lumber columns have sides that either show the wide face or the edges of the lumber strands/veneers known as the narrow face. Values in the tables reflect installation into the wide face. See Technical Bulletin T-C-SCLCLM for load reductions due to narrow face installations.
  8. NAILS: 10d = 0.148" dia. x 3" long. See other nail sizes and information

Code Reports

Part IAPMO UES ER ICC-ES ESR City of Los Angeles State of Florida
MSTC48B3 ESR-2105 ESR-2523 RR25713 FL10852 FL11470
MSTC66B3 ESR-2105 ESR-2523 RR25713 FL10852 FL11470

ESR-2523 is an Index of many of Simpson Strong-Tie Stamped and Welded Cold-formed Steel Products for Wood or Cold-formed Steel Construction


Part Orthographic Perspective
MSTC48B3 Installation with no Rim Joist
High Wind-Resistant Construction D75: Wall to Pile/Girder: MSTC66B3Z Installation with no Rim Joist (MSTC66B3 similar)
MSTC66B3 Installation with Rim Joist