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VPA Variable Pitch Connector

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Product Details
VPA25
VPA25
VPA25 Illustration
VPA25 Illustration

The VPA Variable Pitch Connector is a versatile, field‑adjustable solution for connecting rafters to the wall top plate. It adjusts in the field to accommodate slopes between 14 degrees (3:12) and 45 degrees (12:12), making it a complement to the versatile LSSR Rafter Hanger.

Please check the Corrosion Information to see if it is suitable for your application.

Material

Carbon Steel 1.3mm thick

Finish

Z275 Galvanised

Features & Benefits
  • Easy to adjust the pitch in the field to match the application
  • Eliminates the need for time‑consuming notching of rafters
  • Available for solid sawn and engineered wood applications
Installation
  • Use all specified fasteners
  • Install top nails and face PAN nails in “A” flange to outside wall top plate. Seat rafter with a hammer, adjusting “B” flange to the required pitch. Install “B” flange nails in the elongated nail holes, locking the pitch 
  • Install 40mmx3.75mm nail into tab nail hole. Hammer nail in at a slight angle to prevent splitting
  • For I-Joist, bend tab with hammer and install 40mmx3.75mm nail into tab nail hole. Hammer nail in an approximate 45° angle to limit splitting
Model No. Table

Model No.

Joist Width (mm)

Dimensions (mm)

Fasteners
(No. – Length x Dia.,mm)

Country

Design Capacity (kN)

W

B

Carrying
Member

Carried
Member

Uplift

Download

F1

F2

Floor

Roof

VPA25

45

46

51

8 – 75 x 3.75

2 – 38 x 3.75

AU

k1 = 1.14

k1 = 0.69

k1 = 0.77

k1 = 1.14

k1 = 1.14

1.58

2.88

2.88

1.85

1.16

NZ

k1 = 1.0

k1 = 0.80

k1 = 0.80

k1 = 1.0

k1 = 1.0

1.49

2.71

2.71

1.74

1.16
  1. Design Capacity is the lesser of (1) the Characteristic Capacity multiplied by the Australian Capacity Factor, or the NZ Strength Reduction Factor (φ), and applicable the k modification factors following AS 1720.1 and NZS 3603 and (2) the Serviceability Capacity which is the load at 3.2mm joint slip. Design Capacity is the minimum of test data and structural joint calculation.
  2. For Australia, the Capacity Factor (φ) is 0.85 for nails and screws for structural joints in a Category 1 application. Reduce tabulated values where other Category applications govern. For NZ, 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 Australia Joint Group JD4 per AS 1720.1 Table H2.4 and New Zealand Joint Group J5 per NZS 3603 Table 4.1.
  5. F1 load direction is parallel to the supporting timber member and F2 is parallel to the rafter seat.
  6. For simultaneous loads in more than one direction, the connector must be evaluated using the Unity Equation. See General Note 'e' on page 15.
 
Brochures & Catalogues

Brochures and Catalogues

PDF icon Flyer - Engineered Structural ConnectionsPDF icon Catalogue - Timber Connectors NZS 3604
Installation Guides

Installation Guides

PDF icon VPA Installation Guides
Technical Data & Docs

Technical Data Sheets

PDF icon Technical Data Sheet - VPA

Report

PDF icon ETA-08-0053

Report Links

ESR-2551

Warranty

Warranty

CAD Library

Download

jpg: 
Image icon VPA25_Detail_Truss_Rafter-to-Top Plate.jpg
dxf: 
Binary Data VPA25_Detail_Truss_Rafter-to-Top Plate.dxf
dwg: 
File VPA25_Detail_Truss_Rafter-to-Top Plate.dwg
PDF: 
PDF icon VPA25_Detail_Truss_Rafter-to-Top Plate.pdf

Download

jpg: 
Image icon VPA25_3D.jpg
RFA: 
Binary Data VPA25_3D_CAD.rfa
Package icon Download Full Set (1.8 MB)
Masterspec
Alternative Products

Alternative Products

Hurricane Tie

Hurricane Tie

Hurricane Ties provide a positive connection between the truss/rafter and the wall of the structure to resist wind and seismic forces. These ties connect both solid-sawn and engineered timber across a wide range of applications.

Inspiration

Inspiration

VPA25_Application_01.jpg

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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.

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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.

* Start typing address and select from the autocomplete.

Privacy policy

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 (2016-2018).

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.