Simpson HTT4-KTM Bracewall Holdown Kit
The Bracewall Holdown Kit Includes: (2) HTT4, (2) THD12150MG, (36) SD#10 x 38mm, (1) Installation instructions
Simpson Strong-Tie is the market leader in holdown brackets. The HTT4 is designed for heavy-duty holdown applications including external and internal 15kN bracewalls for concrete floors in accordance with NZS 3604:2011.
The HTT4 Bracewall Holdown Kit is ideal for retrofit or new construction projects where homeowners and builders require a superior holdown bracket with less joint slip or fastener/connector deformation.
Material
- HTT4: Carbon Steel 3.1mm thick
- THD & SD: Carbon Steel
Finish
- HTT4: Z275 Galvanised
- THD & SD: Mechanically Galvanised
Features & Benefits
- Designed for external and internal braced walls for concrete floors constructed in accordance with NZS 3604:2011
- Can be installed anytime before plasterboard or wall lining
- The load capacities are applicable for both 20MPa and 17MPa concrete strengths
- The HTT4 Tension Tie & Holdown Bracket has a multi ply seat formed from a single piece of steel, provides extra strength
- The Titen HD® Heavy Duty Screw Anchor has serrated cutting teeth and patented thread design, which reduce installation torque, enable quick and easy installation
- Uses Strong-Drive® SD#10 x 38mm Connector screws including an unique screw pattern that provides less joint slip or fastener/connector deformation
Installation
- The Kit requires no additional washer
- Follow the installation guide
Applications
- External and internal braced wall applications
- Retrofit or new construction projects
Approvals
- THD Approvals – BRANZ Appraisal 983 (2018) for applications related to bottom plate fixings and holdown applications per NZS 3604 using Titen HD
- BRANZ Structures Test Report – Bracewall Hold-Down Bottom Plate Anchor
Model No. Table
HTT4 Bracewall Holdown Kit Technical Data
Model No. |
HTT4 Dimensions (mm) |
Anchor & Fasteners |
Framing Information |
Characteristic Load, Rk (kN) |
||||
W |
H |
Foot Projection |
Distance Post to Bolt (CL) |
Anchor Bolt |
Post Fasteners (No. – Dia. x Length) (mm) |
|||
HTT4-KTM |
65 |
315 |
60 |
33 |
THD12150MG |
18 – SD#10 x 38 |
Suits 90mm and 140mm wall Framing |
15 kN Uplift |
|
HTT4 Bracewall Holdown Kit Installation Data
Installation Data |
Description |
Millimetre |
Anchor Installation Data |
Drill Hole Diameter |
12 |
Maximum Diameter of Drill Bit |
12.5 |
|
Drill Depth |
105 |
|
Nominal Embedment Depth |
95 |
|
Concrete Thickness, Edge Distance and Spacing |
Minimum Concrete Thickness |
150 |
Minimum Edge Distance |
48 |
|
Minimum Spacing |
80 |
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