SPAX Timber Construction Screws
BPIR summary created by: Greg Pankhurst
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SPAX Timber Construction Screws
BPIR Declaration
Version: Construction
Designated building product: Class 1
Declaration
SPAX Pacific Pty Ltd has provided this declaration to satisfy the provisions of Schedule 1(d) of the Building (Building Product Information Requirements) Regulations 2022.
Product/system
| Name | SPAX Timber Construction Screws |
| Line | |
| Identifier | SPAX - Timber Construction |
Description
SPAX timber construction screws are a range of high strength self-tapping screws for use in timber structures. They are available in partial thread or full thread.
- Head styles of countersunk, washer head or cylinder head.
- Thread diameters range from 6.0mm to 12.0mm.
- Lengths range from 40mm to 800mm.
- Materials of manufacture are high-carbon steel or stainless steel.
- Anti-corrosion coatings are Wirox (zinc) or Delta-Seal.
Scope of use
SPAX timber construction screws are intended for use in residential and commercial timber construction to secure various building components such as mass timber flooring, walls, columns and beams as well as frame and truss and other timber components and steel.
Conditions of use
Installation of SPAX products should be carried out by a competent professional, in accordance with any manufacturer's installation instructions provided.
Installation in hardwood and LVL requires pre-drilling before the screw is installed. Drill bit diameters are provided in the "Pre-drilling Guidelines", the SPAX "Connection Design According to NZS 3603" or the "SPAX European Technical Assessment ETA 12/0114".
SPAX DELTA-SEAL coated or stainless steel screws should be used in timbers treated to H3.2 treatment or above.
SPAX screws must be designed in accordance with one or more of the following documents:
- SPAX Design Guidelines
- SPAX Connection Design According to NZS 3603
- SPAX European Technical Assessment ETA 12/0114
Relevant building code clauses
B1 Structure — B1.3.1, B1.3.2, B1.3.3 (b, d, e, f, g, h, j, q), B1.3.4
B2 Durability — B2.3.1 (a)
F2 Hazardous building materials — F2.3.1
Contributions to compliance
B1: Compliance with B1 Structure depends on design by the designer (consulting structural engineer or architect) where structural capacity of the screws exceeds the actual loads applied. The design of the screw connections shall be based on the characteristic load-carrying capacities of the screws. The design capacities shall be derived from the characteristic capacities in accordance with the SPAX Design Guide to ETA and EC5, NZS 3603 or AS/NZS 1720.
B2.3.1: SPAX screws are available with WIROX coating, DELTA-SEAL coating or stainless steel to suit the various durability requirements of the building. WIROX is sutable for indoor environments only. DELTA-SEAL coating is suitable for outdoor environments which are not directly exposed to salt water and also for use in CCA, ACQ and LOSP treated timbers. Stainless steel is suitable for use in more corrosive environments including where exposed to salt water.
The most suitable coating or material for the required durability in the surrounding environment of the application is to be determined by the designer. Further information can be found in the SPAX European Technical Assessment ETA 12/0114 and on the SPAX Pacific website.
- F2: Not applicable
Supporting documentation
The following additional documentation supports the above statements:
| SPAX Design Documents (Design) | September 2023 | https://www.spaxpacific.com/documents |
For further information supporting SPAX Timber Construction Screws claims refer to our website.
Contact details
| Manufacture location | Overseas |
| Legal and trading name of manufacturer | SPAX International GmbH & Co. KG |
| Legal and trading name of importer | SPAX Pacific Pty Ltd |
| Importer address for service | 2/12 Marphona Cres Takanini, Auckland 2105 |
| Importer website | www.spaxpacific.com |
| Importer NZBN | 112 113 932 |
| Importer email | info@spaxpacific.co.nz |
| Importer phone number | 09 570 7447 |
Responsible person
As the responsible person as set out in Regulation 3, I confirm that the information supplied in this declaration is based on information supplied to the company as well as the company's own processes and is therefore to the best of my knowledge, correct.
I can also confirm that SPAX Timber Construction Screws is not subject to a warning on ban under s26 of the Building Act.
Signed for and on behalf of SPAX Pacific Pty Ltd:
Your Signature
Your Name
YOUR POSITION
Month Year
SPAX Pacific Pty Ltd
2/12 Marphona Cres Takanini, Auckland 2105 New Zealand
09 570 7447 | www.spaxpacific.com
Appendix
Note: The below appendix includes information relating to BPIR Ready.
Publishing this information is not a requirement under BPIR. Its inclusion here is to provide a reference for how this BPIR summary was generated as well as to help summary creators understand the performance clauses suggested by BPIR Ready.
BPIR Ready selections
Category: Fixings and fasteners
Building code performance clauses
B1 Structure
B1.3.1
Buildings, building elements and sitework shall have a low probability of rupturing, becoming unstable, losing equilibrium, or collapsing during construction or alteration and throughout their lives.
B1.3.2
Buildings, building elements and sitework shall have a low probability of causing loss of amenity through undue deformation, vibratory response, degradation, or other physical characteristics throughout their lives, or during construction or alteration when the building is in use.
B1.3.3
Account shall be taken of all physical conditions likely to affect the stability of buildings, building elements and sitework, including:
- (b) imposed gravity loads arising from use
- (d) earth pressure
- (e) water and other liquids
- (f) earthquake
- (g) snow
- (h) wind
- (j) impact
- (q) time dependent effects including creep and shrinkage
B1.3.4
Due allowances shall be made for:
- the consequences of failure,
- the intended use of the building,
- effects of uncertainties resulting from construction activities, or the sequence in which construction activities occur,
- variation in the properties of materials and the characteristics of the site, and
- accuracy limitations inherent in the methods used to predict the stability of buildings
B2 Durability
B2.3.1
Building elements must, with only normal maintenance, continue to satisfy the performance requirements of this code for the lesser of the specified intended life of the building, if stated, or:
- (a) the life of the building, being not less than 50 years, if: those building elements (including floors, walls, and fixings) provide structural stability to the building, or those building elements are difficult to access or replace, or failure of those building elements to comply with the building code would go undetected during both normal use and maintenance of the building
F2 Hazardous building materials
F2.3.1
The quantities of gas, liquid, radiation or solid particles emitted by materials used in the construction of buildings, shall not give rise to harmful concentrations at the surface of the material where the material is exposed, or in the atmosphere of any space.