WZ steel strapping
Fastening strap WZ EN 14545
STSTRP-EN14545-(Z275)-40X1,5MMX50M
Register now and access more than 125,000 products
- Deeper embedding of fastener in wooden substrate for higher bearing loads
- 25% lower weight for easier installation
- Patented edge shaping and high-quality steel for higher tensile strength
- Sheet metal hot-dip galvanised on both sides (S350DG + Z275MAC (approx. 275 g both sides)) in line with EN 10346:2009-07, thickness 1.5 mm
- Application in utilisation classes 1 and 2 in line with EN 1995:2013
CE marking in line with EN 14545:2009-02
The nail connection at the end generally dictates the load-bearing capacity.
Multiple wind brace bands can be arranged side by side to distribute stronger forces. It is advisable to use a wind brace band tensioner to ensure the straps are evenly tightened.
Wind brace bands are fastened using Würth anchor nails or ASSY joist hanger screws.
Per attachment point, at least 2 nails or ASSY joist hanger screws must be used.
Edge clearances and centre to centre distances in line with EC5 must be observed for nails and screws.
Ensure that wind and tensile forces are correctly transferred to the roof structure.
CE marking in line with EN 14545:2009-02
The usage instructions are recommendations based on the tests we have conducted and on our experience; carry out your own tests before each application. Due to the large number of applications and storage and processing conditions, we do not assume any liability for a specific application result. Insofar as our free customer service provides technical information or acts as an advisory service, no responsibility is assumed by this service except where the advice or information given falls within the scope of our specified, contractually agreed service or the advisor was acting deliberately. We guarantee the consistent quality of our products. We reserve the right to make technical changes and further develop products.
Datasheets(X)
Diagonal bracing of roof and wall structures
Würth WZ wind brace bands can be directly fastened to the tops of rafters. Ensure that wind and tensile forces are correctly transferred to the roof structure. Wind brace bands are fastened using Würth anchor nails or ASSY joist hanger screws. At least 2 nails or screws must be used at each rafter crossing point. Edge clearances and centre to centre distances must be observed for the nails and screws. Multiple wind brace bands can be arranged side by side to distribute stronger forces.
Suitable fasteners:
- Comb/ribbed nails in line with EN 14592: 4.0 x ≥ 40 mm
- ASSY joist hanger screw: 5.0 x ≥ 40 mm
 | |
Width x thickness | 40 x 1.5 mm |
Length of roll | 50 m |
Diameter of hole | 5 mm |
Weight | 22000 g |
Approval | EN 14545:2009-02; AbZ Z-9.1-545 |
Min. yield strength (ReH) | 350 N/mm² |
Min. tensile strength Rm | 420 N/mm² |
Min. breaking elongation A80 | 16 % |
Material | Sheet steel |
Material designation | S350GD |
Material standard | DIN EN 10346:2009-07 |
Surface | Hot dip galvanized |
| Characteristic load capacities: | ||||||||
| Characteristic load capacity R 1,k [kN] minimum from: | ||||||||
| Width [mm] | Thickness [mm] | Steel or wind brace band WZ | Wood when using Würth anchor nail 4.0 mm x L | Wood when using ASSY 3.0 joist hanger screw 5.0 mm x L | ||||
| 40 | 1,5 | 15,7 | 1.68 x n | 1.99 x n | 2.15 x n | 2.13 x n | 2.29 x n | 2.44 x n |
| 60 | 23,6 | |||||||
| 80 | 37,8 | |||||||
| n = number of nails at anchor point Values apply to wood with bulk density of 350 kg/m³ Measured load capacity values: Wood: R,d = R,k x kmod/γm (with wood γm = 1.3) Steel: R,d = R,k/γm (with steel γm = 1.3) | ||||||||
| Measurement aid Würth wind brace band WZ measurement | ||||||||
| Characteristic load capacity R1,k [KN] minimum of the wind brace band WZ from: | ||||||||
| Width (mm) | Thickness (mm) | Steel or wind brace band WZ | Wood when using Würth anchor nails 4.0 mm x L | Wood when using ASSY 3.0 joist hanger screw 5.0 mm x L | ||||
| 40 mm | 50 mm | 60 mm | 40 mm | 50 mm | 60 mm | |||
| 40 | 1,5 | 15,7 | 1.68 x n | 1.99 x n | 2.15 x n | 2.15 x n | 2.29 x n | 2.44 x n |
| 60 | 1,5 | 23,6 | ||||||
| 80 | 1,5 | 37,8 | ||||||
| Characteristic load capacity Rk [KN] of the wind brace band tensioning system (ETA- 15/0043) | ||||||||
| WRB wind brace band tensioner WRB anchor connection | WRB anchor plate type 2 | WRB Butterfly | ||||||
| 45° | 45° | |||||||
| 24,2 | 14 | 18,7 | 15,2 | 17,7 | ||||
| Measurement example wind brace band WZ without WRB tensioning system: Assumptions: Würth wind brace band WZ 1.5 x 60 mm, connection with 12 ASSY 3.0 joist hanger screws 5.0 x 40 mm, usage class 2, load duration class: "short", load Fd = 15.0 KN Calculation: R1,d Wood: 12 pcs x 2.13 kN x 0.9/1.3 = 17.7 kN, decisive => 15.0 kN/17.7 kN = 0.85 < 1.0 R1,d Steel: 23.6 kN/1.3 = 18.15 kN | ||||||||
| Note: n = number of nails at anchor point Values apply to wood with bulk density of 350 kg/m³ Measured load capacity values: Wood: R,d = R,k x kmod/gm (with wood gm = 1.3) Steel: R,d = R,k/gm (with steel gm = 1.3) It should be assessed whether Würth ASSY 3.0 joist hanger screws should be installed based on the edge spacing which is to be maintained. These are planning aids. Where a project is undertaken, the values should be checked by an authorised person. | ||||||||
Select RAL-colour code
!! NOTE: On-screen visualisation of the colour differs from real colour shade!!
Last viewed
Electrical insulating tape
Complete printed Clipster number plate holder
Hexagon tapping screw, shape C ISO 1479 A2 stainless steel, plain
WIT-AS anchor rod, A4 stainless steel for WIT-VM 250 injection systems
Twist drill bit HSS DIN 1897 type RN
Protective tape for bath sealing tape
Twist drill bit HSS DIN 338 type RW
Straight male fitting ISO 8434-1, zinc-nickel-plated steel, metric male thread with metallic sealing edge, shape B
Valve set Sundström R06-0807
Feather key, high profile DIN 6885, steel C 45 K, plain, shape A