HTT22 Simpson Strong Tie Tension Tie (Base Width 60mm x Height 558mm x Base Depth 60mm (W = 64mm)
$80.50 inc. GST
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Simpson Strong‑Tie offers a wide variety of holdown devices designed and tested to address many applications and load demands. The HTT Tension Tie & Holdown is designed for heavy‑duty holdown applications on single or double studs and offer a solution for resisting tension loads.
The heavy‑duty HTT is ideal for retrofit or new construction projects. They provide high-strength, post-pour, concrete-to-steel connections. The HTT is also suitable for residential and commercial projects, sub diaphragm floor, seismic upgrades, mid floor vertical connection applications.
The HTT is a single-piece formed tension tie — no rivets, no welding points and a 4-ply formed seat. No washers are required. They feature an optimized nailing pattern which results in better performance with less deflection.
Please check Corrosion Information if it is suitable for your application.
Material
Carbon Steel 3.1mm thick
Finish
Z275 Galvanised
Features & Benefits
- A single piece folded and no weak point of welding, provide ultimate strength tension tile
- Unique nailing pattern that provides better results with less deflection
- Stronger and safer than typical through-bolt installations for deck post connections
- Uses Strong-Drive® SD Connector screws which install easily, reduce fastener slip and provide a greater net section area of the post compared to bolts
- Suitable for heavy duty holdown applications on single or double studs
- Helps prevent a common type of deck failure
- 17mm diameter anchor hole can accommodate Simpson Strong-Tie M12 Titen HD Screw Anchor or any M16 threaded rods
- HTT5 and HTT5KT are suitable for steel frame holdown connections
Installation
- Use all specified fasteners
- The HTT requires no additional washer
- Strong‑Drive SD Connector screws install best with a low speed high torque drill with a 3/8” hex head driver
Applications
- Heavy‑duty holdown applications
- Resisting tension load applications
- Shearwalls, studs to foundation connections
- Concrete-to-steel connections
- Retrofit or new construction projects
- Residential and commercial projects
- Sub diaphragm floor, seismic upgrades, mid floor vertical connection applications
- Engineered Wood Products (EWP)
- Cross-Laminated Timber (CLT)
- Steel Frame Holdown
Model No. Table
|
Model No. |
Dimensions (mm) |
Fasteners |
Minimum Timber Member Size (Depth x Breadth, mm) |
Country |
Design Tension Capacity (kN) |
|||||
|
Strap |
W |
H |
B |
CL |
Anchor Hole Dia (mm) |
Post (Nails: No. – Length x Dia., Screws: No. – Dia. x Length, mm) |
||||
|
HTT4 |
3.1 |
65 |
315 |
60 |
33 |
16 |
18 – 38 x 3.75 |
140 x 38 |
AU |
k1 = 1.14 |
|
15.30 |
||||||||||
|
NZ |
k1 = 1.0 |
|||||||||
|
14.40 |
||||||||||
|
90 x 75 |
AU |
k1 = 1.14 |
||||||||
|
18.38 |
||||||||||
|
NZ |
k1 = 1.0 |
|||||||||
|
17.05 |
||||||||||
|
18 – SD#10 x 38 |
140 x 38 or 90 x 75 |
AU |
k1 = 1.14 |
|||||||
|
23.04 |
||||||||||
|
NZ |
k1 = 1.0 |
|||||||||
|
18.97 |
||||||||||
|
HTT5 |
3.1 |
65 |
405 |
60 |
33 |
16 |
26 – 38 x 3.75 |
90 x 75 |
AU |
k1 = 1.14 |
|
20.44 |
||||||||||
|
NZ |
k1 = 1.0 |
|||||||||
|
17.05 |
||||||||||
|
26 – SD#10 x 38 |
140 x 38 |
AU |
k1 = 1.14 |
|||||||
|
28.91 |
||||||||||
|
NZ |
k1 = 1.0 |
|||||||||
|
21.31 |
||||||||||
|
HTT22E |
3.1 |
63 |
558 |
60 |
33 |
18.5 |
– |
– |
AU |
k1 = 1.14 |
|
– |
||||||||||
|
NZ |
k1 = 1.0 |
|||||||||
|
– |
||||||||||
|
– |
– |
AU |
k1 = 1.14 |
|||||||
|
– |
||||||||||
|
NZ |
k1 = 1.0 |
|||||||||
|
– |
||||||||||
|
HTT5KT |
HTT5 Tension Tie Kit: includes BP 5⁄8–1 bearing plate washer and 26–SD #10×2 1⁄2 screws. |
|||||||||
- 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 6.4mm joint slip, which includes fastener slip, anchor elongation and holdown deformation. Design Capacity is the minimum of test data and structural joint calculation.
- 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.
- Duration of Load Factor (k1) is as shown. Reduce Duration of Load Factor where applicable. Capacities may not be increased.
- 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.
- The Designer must specify anchor bolt type, length and embedment. Fasteners for the HTT4 are sold separately.
- Anchor bolt nut should be finger tight plus 1/3 to 1/2 turn with a hand wrench. Care should be taken not to over-tighten the nut.
- Post or beam design by Designer. Posts may consist of multiple members provided they are connected independently of the holdown fasteners.
- Structural composite timber columns have sides that either show the wide face or the edges of the timber strands/ veneers, known as the narrow face.
- Simpson Srong-Tie stainless-steel connectors require stainless-steel fasteners. Values in the table reflect installation into the wide face.
- Holdowns and tension ties are for use in vertical or horizontal applications.
- Holdowns and tension ties may be installed raised up to 460mm above the top of the concrete with no load reduction, provided that additional elongation of the anchor rod is taked into account.
| Weight | 5 kg |
|---|---|
| Dimensions | 60 × 63 × 558 cm |
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