Simpson Strong-Tie HTT4 314mm Steel Hold Down Strap 4605
Ideal for existing or new construction, HTT Tension ties provide a high strength timber to concrete, or timber to masonry, tension connection
The long vertical leg makes it possible to add the required number of fasteners (CNA Nails and CSA Screws) in a vertical post and still comply to relevant standards with regards to fastener spacing requirements.
The unique design of the HTT - a multi ply seat formed from a single piece of steel - gives the tension tie extra strength at the concrete / masonry anchorage point
Material
Z275 Pre-galvanised mild steel.
Benefits
- Enables a connection to concrete structure.
When to Use
- Timber structures which exerted to high uplift forces can be connected to concrete structures with the HTT Hold Down.
- Tension force connection between timber floor joists and masonry walls
PRODUCT DIMENSIONS
| References |
Product Dimensions [mm] |
Flange A |
Flange B |
| A |
B |
C |
D |
E |
t |
Ø4,7 |
Ø5 |
Slots
Ø5x12 |
Ø21 |
Ø17,5 |
Ø21 |
∅25 |
| HTT4 |
314 |
60 |
64 |
11.4 |
35 |
2.8 |
18 |
- |
- |
- |
1 |
- |
- |
| References |
Product capacities - Timber to Concrete |
| Number of Fasteners |
Characteristic capacities - Timber C24 to concrete [kN] |
| Flange A |
Flange B |
R1.k (without US50/50/8 washer) |
R1.k (With US50/50/8 washer) |
| Qty |
Type |
Qty |
Type |
CNA4.0x50 |
CNA4.0x60 |
CSA5.0x50 |
CSA5.0x80 |
CNA4.0x40 |
CNA4.0x50 |
CNA4.0x60 |
| HTT4 |
18 |
CNA |
1 |
M16 |
24.7 |
31 |
- |
- |
23.9 |
31.7 |
34.2 |
LGS PERFORMANCE VALUES - 1.2MM THICK - SINGLE STUD
| References |
Fasteners |
Characteristic Capacities [kN] |
Safe Working Loads [kN] |
| Flange A |
Flange B |
R2,K
|
Deflection at Load [mm] |
R2,SWL,ST
|
Deflection at Load [mm] |
| Stud (X34B1016) |
Anchor Bolt |
| Qty |
Qty |
Ø [mm] |
| HTT4 |
18 |
1 |
16 |
21.2 |
4.7 |
14.1 |
2.6 |
1. Performance Values are based upon tests completed by Simpson strong Tie U.S I accordance to ICC-ES AC261 - acceptance criteria for connectors used with Cold Formed Steel Structural Members
2. Deflection at Load is the deflection of the hold down measured between the anchor bolt and the strap portion of the hold down when loaded to the stated tension load
3. The engineer or designer shall be responsible for specifying suitable anchor type, embedment & configuration
LGS PERFORMANCE VALUES - 1.2MM THICK - BACK TO BACK
| References |
Fasteners |
Safe Working Loads [kN] |
Characteristic Capacities [kN] |
| Flange A |
Flange B |
R2,SWL,ST
|
Deflection at Load [mm] |
R2,K
|
Deflection at Load [mm] |
| Stud (X34B1016) |
Anchor Bolt |
| Qty |
Qty |
Ø [mm] |
| HTT4 |
18 |
1 |
16 |
19.5 |
3.2 |
29.7 |
6.4 |
1. Performance Values are based upon tests completed by Simpson strong Tie U.S I accordance to ICC-ES AC261 - acceptance criteria for connectors used with Cold Formed Steel Structural Members
2. Deflection at Load is the deflection of the hold down measured between the anchor bolt and the strap portion of the hold down when loaded to the stated tension load
3. The engineer or designer shall be responsible for specifying suitable anchor type, embedment & configuration
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