To the top

New Zealand International

Product Tabs

Product Details
MASA
MASA
MASA Illustration
MASA Illustration

The MASA Bottom Plate Anchor provides a time‑saving alternative to M12 and M16 cast‑in‑place anchor bolts on 45mm bottom plates. Designed to install on the formwork before the pour, they simplify concrete finishing and can easily adapt to timer stud interference. Designing with MASA mudsill anchors also eliminates the need for 75mm square plate washers on the anchor bolts for seismic design, and in some cases offers load capacities that meet or exceed the parallel‑ and perpendicular‑to‑plate shear capacity of other cast‑in‑place anchors.

Please check Corrossion Information if it is suitable for your application.

Material

Carbon Steel 1.6mm thick

Finish

ZMAX® Galvanised

Features & Benefits
  • Attaches easily to the concrete formwork
  • Stays out of the way until needed, making slab finishing easier
  • Eliminates the need to pre‑drill bottom plates for anchor bolts
  • Adapts to timber stud placement with two installation scenarios
Installation
  • Use all specified fasteners 
  • Concrete shall have a minimum f’c = 17MPa
  • Spalling—Full loads apply for spalls up to a maximum height of 32mm and a maximum depth of 22mm. Any exposed portion of the mudsill anchor must be protected against possible corrosion.
  • For prescriptive anchor spacing refer to table
  • Minimum MASA end distance is 100mm and minimum centre‑to‑centre spacing is 200mm for full load
  • For continuous load path, MASA should be installed on the same side of wall as uplift connectors
Model No. Table

Model No.

Sill Size (mm)

Fasteners
(No. – Length x Dia., mm)

Design Capacity (kN)

Sides

Top

Uplift
k1 = 1.0

F1
k1 = 1.0

F2
k1 = 1.0

STANDARD INSTALLATION

MASA

90 x 45, 140 x 45

3 – 38 x 3.75

6 – 38 x 3.75

5.34

6.01

2.26

ONE LEG UP INSTALLATION

MASA

90 x 45, 140 x 45

3 – 38 x 3.75

6 – 38 x 3.75

4.35

  1. Design Capacity is the lesser of (1) the Characteristic Capacity multiplied by the NZ Strength Reduction Factor (φ), and applicable the k modification factors following NZS 3603 and (2) the Serviceability Capacity which is the load at 3.2mm joint slip, which includes fastener slip and mudsill anchor deformation. Design Capacity is the minimum of test data and structural joint calculation.
  2. The Strength Reduction Factor (φ) is 0.80 for nails in lateral loading.
  3. Duration of Load Factor (k1) is as shown. Reduce Duration of Load Factor where applicable. Capacities may not be increased.
  4. Timber species for joint design is seasoned Radiata Pine, which is New Zealand Joint Group J5 per NZS 3603 Table 4.1.
  5. Minimum normal class concrete strength grade shall be 17 MPa.
  6. Design Capacity based on a minimum concrete wall width of 150mm.
  7. For simultaneous loads in more than one direction, the connector must be evaluated using the Unity Equation.
Brochures & Catalogues
Installation Guides

Installation Guides

PDF icon MASA Installation Guides
Technical Data & Docs

Technical Data Sheets

PDF icon Technical Data Sheet - MASA

Report Links

Warranty

Warranty

CAD Library
Masterspec
Alternative Products

Alternative Products

Titen HD Heavy Duty Screw Anchor - Concrete & Masonry

Titen HD® Heavy Duty Screw Anchor is the original high-strength screw anchor for use in cracked and uncracked concrete, as well as uncracked masonry. The Titen HD® demonstrates industry-leading performance.

E5_Reinforced Angle Bracket

E5 Reinforced Angle Bracket is suitable for structural applications in framing and timber-frame houses for general connecting of timber at 90° angles. Typical applications include fixing trusses, studs, purlins, beams and posts.

Inspiration
Request a Demo

Request a Demo/Sample

Experience the innovation design of Simpson Strong-Tie's products and how we can help you build safer, stronger structures. Please fill out your details and submit the form below. We’ll be in touch to schedule a time to talk and give you a personal demo of Simpson Strong-Tie products.

Request a Demo/Sample

Experience the innovation design of Simpson Strong-Tie's products and how we can help you build safer, stronger structures. Please fill out your details and submit the form below. We’ll be in touch to schedule a time to talk and give you a personal demo of Simpson Strong-Tie products.

Structural Connections

 

Unmatched Quality from the Truss to the Foundation

With nearly 60 years of field and R&D experience, Simpson Strong-Tie® timber connectors are manufactured to the industry's highest standards. From framing angles to straps to heavy-duty joist hangers, we offer the most diverse product line so that you have the right product for the job.

Simpson Strong-Tie® connectors offer unmatched quality with laboratory and field testing, and are backed by our uncompromising commitment to customer service. As the company that built the connector industry, you can count on Simpson Strong-Tie® to work closely with builders, engineers and building officials to deliver innovative, building code-compliant solutions to help build safer, stronger structures economically. Download the Timber Connectors NZS 3604 Catalogue.

Timber Connectors

From testing to service to availability, everything we do is engineered to ensure your project's success. With every product, you know you are getting the quality, value, service and on-time delivery that we have built our reputation on for the past 60 years.

From straps and ties to joist hangers and much more, Simpson Strong-Tie® structural connectors increase the strength and safety of timber-frame structures. Each connector is unique to Simpson Strong-Tie and is designed for specific applications without the need to adapt metal plating to suit a connection. Download the Timber Construction Connectors Catalogue.

Steel Frame Connectors

From fully tested and engineered connectors and clips Simpson Strong-Tie® provides comprehensive structural solutions for cold-formed steel construction. From steel-to-steel connections to full-scale lateral solutions and curtain wall connectors, we remain committed to developing new technology that helps to advance the cold-formed steel industry.

Find out how Simpson Strong-Tie timber connectors can help you build the right way every day. Download the Cold-Fromed Steel Construction Connectors Catalogue.