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TJC37
TJC37
TJC37 Illustration
TJC37 Illustration

TJC is a versatile connector for jack trusses. Adjustable from 0 to 85 degree (shipped with 67.5 degree bend). Nail hole locations allow for easy installation.

Material

Carbon Steel 0.9mm thick

Finish

Z275 Galvanised

Features & Benefits
  • Minimum nailing option provides faster installation and lower installed cost
  • No bevel cut required
  • Can be used back‑to‑back on a single member (a load reduction applies, see table notes)
  • Compatible with Strong-Drive® SD screws
Installation
  • Use all specified fasteners
  • TJC37 can be installed filling round holes only, or filling round and triangle 
  • holes for maximum values
  • To reduce the potential for splitting, install the TJC with a minimum 5mm edge distance on the chord members
  • Position the jack truss on the inside of the bend line with the end of the jack truss flush with the bend line
  • Bend the TJC to the desired position (one bend cycle only)
  • Attachment of TJC to the top chord requires the Designer to check connection geometry for placement on both carried and carrying chord members 
  • Supported jack member is a minimum 39mm thick
Model No. Table

Model No.

Fasteners
(No. – Length x Dia., mm)

Country

Design Capacity (kN)

Carrying
Member

Carried
Member

1° to 60°

61° to 67.5°

68° to 85°

Floor

Roof

Floor

Roof

Floor

Roof

Floor

Roof

TJC37 (Min)

4 – 38 x 3.32

4 – 38 x 3.32

AU

k1 = 0.69

k1 = 0.77

k1 = 0.69

k1 = 0.77

k1 = 0.69

k1 = 0.77

k1 = 0.69

k1 = 0.77

1.21

1.21

1.20

1.20

1.40

1.40

1.14

1.14

NZ

k1 = 0.80

k1 = 0.80

k1 = 0.80

k1 = 0.80

k1 = 0.80

k1 = 0.80

k1 = 0.80

k1 = 0.80

1.21

1.21

1.20

1.20

1.31

1.31

1.14

1.14

TJC37 (Max)

6 – 38 x 3.32

6 – 38 x 3.32

AU

k1 = 0.69

k1 = 0.77

k1 = 0.69

k1 = 0.77

k1 = 0.69

k1 = 0.77

k1 = 0.69

k1 = 0.77

2.69

2.69

2.03

2.03

1.75

1.75

2.04

2.04

NZ

k1 = 0.80

k1 = 0.80

k1 = 0.80

k1 = 0.80

k1 = 0.80

k1 = 0.80

k1 = 0.80

k1 = 0.80

2.45

2.45

1.91

1.91

1.65

1.65

1.93

1.93

  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 load and 0.70 for other fasteners.
  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. TJC37 requires a single-ply carried member with minimum 89 x 38mm chord members.
  6. For back-to-back installation on a single-ply girder/ hip member, use a 0.70 reduction of table loads.
  7. Design capacities are for an upward or downward direction.
 
Brochures & Catalogues
Installation Guides

Installation Guides

PDF icon TJC Installation Guides
Technical Data & Docs

Technical Data Sheets

PDF icon Technical Data Sheet - TJC

Warranty

Warranty

CAD Library
Masterspec
Inspiration
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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.

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