MASA/MASAP Mudsill Anchors

Mudsill Anchors

This product's information may differ depending on the category of use. You are currently viewing details related to Mudsill Anchors. You can also view product information related to the category: Concrete Connectors for Cold-Formed Steel Construction

Mudsill anchors have always been a time-saving alternative to anchor bolts, and the MASA anchors provide an even greater load-carrying capacity alternative for 5/8" and 1/2" mudsill anchor bolts on 2x, double-2x and 3x mudsills. It also eliminates the need for 3" square plate washers for seismic design and, in some cases, has load capacities that meet or exceed the parallel- and perpendicular-to-plate shear capacity of other cast-in-place anchors. Two versions of the MASA are available — the standard MASA for installation on standard forms and the MASAP for panelized forms.

The MASA and MASAP are code listed by ICC-ES under the 2012 and 2015 IBC^® and IRC^®.

Material

• 16 gauge

Finish

• Galvanized. All available in ZMAX^® coating. See Corrosion Information.

Installation

• Use all specified fasteners; see General Notes.
• MASA/MASAP
  - Concrete shall have a minimum f'_c = 2500 psi.
  - Spalling — Full loads apply for spalls up to a maximum height of 1 1/4" and a maximum depth of 7/8". Any exposed portion of the mudsill anchor must be protected against possible corrosion.
  - For prescriptive anchor spacing refer to the table below.
  - Testing shows that these mudsill anchors can be used in lieu of code-required anchor bolts and square washer in high seismic zones. Refer to flier Easier Mudsill Anchoring: Cast-in-Place Mudsill Anchor (F-MASA) for additional information.
  - Minimum MASA end distance is 4" and minimum center-to-center spacing is 8" for full load.
  - For continuous load path, MASA should be installed on the same side of wall as uplift connectors.
  - For installation in severe corrosion environments, refer to General Corrosion Risks for additional considerations.

Related Links

Wood Construction

• Wood Construction Connectors Technical and Installation Notes
• General Notes

Cold-Formed Steel Construction

• Cold-Formed Steel Connectors Technical and Installation Notes
• General Notes

Corrosion Information

• General Corrosion Information
• General Corrosion Risks
• Corrosion-Resistant Products

Catalog Pages

• C-C-2017 (Wood Construction Connectors), pages 48–49
• C-CF-2017 (Connectors for Cold-Formed Steel Construction), pages 178–179

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
• 
  Connectors for Cold-Formed Steel Construction

  C-CF-2017

  A catalog including specifications, load tables and installation illustrations for our cold-formed steel connectors and clips.

  Catalog
• 
  Conectores para construcción de acero moldeado en frío

  C-CF-2017SP

  Un catálogo que incluye especificaciones, tablas de carga e ilustraciones de instalación para nuestras abrazaderas y conectores de acero moldeado en frío.

  Catalog
• 
  High Wind-Resistant Construction Application Guide

  F-C-HWRCAG16

  The newly updated High Wind-Resistant Construction Application Guide offers new applications, updated loads, as well as more fastening information that is used to resist high-wind.

  Product Guide
• 
  Flood-Resistant Construction Guide for Flood-Prone Regions

  F-C-FLOODCON13

  This flier is designed to educate Specifiers, Building Officials, and Dealers about how to build code-compliant structures to resist the forces created by flooding and high wind.

  Flier
• 
  Installer's Pocket Guide

  S-C-INSTALL16

  S-C-INSTALL16 is a guide featuring updated products, new color illustrations and easier navigation. Some popular structural fastening and anchoring products have also been added.

  Installation Guide
• 
  Connector Solutions to Meet the Wall-Bracing Requirements of the 2012/2015 International Residential Code®

  T-C-WALLBRACE17

  A technical bulletin providing technical information about wall bracing methods and code sections that require connectors (e.g., holdowns or straps) and anchors.

  Technical Bulletin
• 
  Strengthening Dwellings in Tornado-Prone Areas

  T-C-TORNADO15

  Gain insight into how to strengthen structures to resist damage in tornado-prone areas using Simpson Strong-Tie connectors and continuous-load-path design principles.

  Technical Bulletin
• 
  Code-Compliant Sill Plate Anchorage Solutions

  T-A-SILPLANCH18

  Sill plate/mudsill anchorage solutions for engineered and prescriptive applications into concrete or grout-filled CMU using Titen HD® (THD), MASA/MASAP, MAB/MASB, AT-XP®, SET-XP® or SET-3G™.

  Technical Bulletin
• 
  MASA/MASAP Header Block Installations

  L-C-MASAPLBLK17

  MASA and MASAP connectors provide simple solutions for anchoring a sill plate to the foundation and may be used as alternatives to the traditional cast-in-place anchor bolts required by code.

  Engineering Letter
• 
  MASA/MASAP 1/2" from Edge

  L-C-MASAEDGE18

  MASA/MASAP Mudsill Anchor installed 1/2" in from Edge.

  Engineering Letter
• 
  MASA/MASAP in 4" Stemwall

  L-C-MASA4INSW17

  MASA, MASAP, MASAZ, and MASAPZ used in a 4" Concrete Stemwall.

  Engineering Letter
• 
  North Carolina Residential Code: Alternate Sill Plate Anchors

  L-NCRCALTANCR18

  Alternate Sill Plate Anchors for Section 4504 of the 2012 North Carolina Residential Building Code.

  Engineering Letter
• Show 11 More
  Show Less

Product Information Tables

Prescriptive Spacing for MASA/MASAP to Replace Sill Anchor Bolts

1. "Prescriptive" denotes designs per the IRC or conventional provisions of the IBC for wind speeds 100 mph or less, or for Seismic Design Category D and less (SDC E and less in IBC).
2. Detached one- and two-family dwellings in SDC C may use the "Wind & SDC A&B" spacing.
3. Spacing is based on the parallel to plate load direction for MASA Standard installation only.
4. 5/8" diameter AB required in SDC E.
5. When replacing 1/2" -diameter sill bolts use (7) 10d x 1 1/2" nails for standard installation. One out of three MASAs (33%) may be installed in One-Leg-Up installation along a wall line.
6. When replacing 5/8" -diameter sill bolts use (9) 10d x 1 1/2" nails for standard installation. One out of five MASAs (20%) may be installed in One-Leg-Up installation along a wall line.
7. Per Section 1613 of the 2012/2015 IBC, detached one- and two-family dwellings in SDC C may use the "Wind and SDC A&B" spacing.

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. Loads are based on allowable stress design (ASD) and include the load duration factor C_D (with C_D = 1.6) for wind/earthquake loading. No further increase is allowed. Reduce where other loads govern.
2. Minimum concrete compression strength, f'c is 2500 psi.
3. Allowable loads are based on a minimum stemwall width of 6".
4. For simultaneous loads in more than one direction, the connector must be evaluated using the Unity Equation.
5. Per Section 1613 of the 2012/2015 IBC, detached one- and two-family dwellings in SDC C may use the "Wind and SDC A&B" allowable loads.
6. For designs under the 2012/2015 IBC, sill plate size shall comply with the shearwall requirements of the 2015 Special Design Provisions for Wind and Seismic.
7. MASA/MASAP may be installed using 7-nails when being used to replace a 1/2"-diameter sill bolt for use on a 2x mudsill. Install minimum 3-side fasteners.
8. Nails: 10d x 1 1/2" = 0.148" dia. x 1 1/2" long. See other nail sizes and information.

Code Reports