SPIRAL® FOUNDATION SCREW
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SPIRAL® FOUNDATION SCREW AN EASY, ECONOMICAL AND ENVIRONMENTALLY FRIENDLY ALTERNATIVE TO CONCRETE FOUNDATIONS

ALL YOU NEED TO KNOW • Durable - Galvanised steel • Robust - Body diameter 60 mm • 120 mm diameter head for a variety of brackets • Firm anchoring - 75 mm thread • Resistance to tearing • Pressure resistance • Penetra

A SOLUTION PRACTICAL & ECOLOGICAL The SPIRAL foundation screw is a galvanised steel pile with a thread designed to be driven into the ground and firmly anchored. It allows you to install a perfectly stable and level wooden or aluminium structure that can support heavy loads. Installation of the structure is simplified thanks to the possibility of adjusting and correcting imperfections. The foundation screw is suitable for all kinds of installations: terrace, swimming pool, jacuzzi, carport, shelters, ... Available in several sizes and for different uses, it meets the need to correct a steep...

THE RANGE SPIRAL SCREW G800, G1200 AND G1500 SCREWS FOR FIRM GROUND AND BACKFILLS (FD1577-1578-1806 / NL2804-2805-2806) • Galvanised steel • 3 sizes available: 800, 1200 and 1500 mm • 60 mm diameter • Minimum burial depth of 70 cm (80 cm for the G1500) Maximum floor area per screw (m²) Maximum floor area per Screw (m²) Consistency Maximum load per screw (N) Maximum load per screw (N) Very soft Very soft Very rigid Très rigide

THE RANGE SPIRAL SCREW S1200 SCREW FOR SANDY & SOFT FLOORS • Designed for post installation • Design suitable for soft surfaces, especially sand • Crosspiece designed for increased resistance to lateral forces • Enhanced resistance to tearing • Length 1200 mm • Minimum burial depth of 80 cm Maximum floor area per screw (m²) Maximum floor area per screw (m²) Maximum load per screw (N) Maximum load per screw (N) Very loose Very soft Moderately dense Very dense Very rigid

THE ACCESSOIRIES SPIRAL SUPPORT FOR JOISTS (FD1809 – NL2810) • L-shaped support for the support and fastening of joists or beams • Lateral and axial adjustment • Adjustment threaded rod, 200 mm in length • M16 nut MULTI-PURPOSE SUPPORT POST SUPPORTS • U-shaped post support • 2 sizes 90 x 90 and 120 x 120 mm • Multiple fixing options • Adjustment threaded rod, 200 mm in length • M 16 x 50 central fixing screw and wa

THE ACCESSOIRIES SPIRAL LEVELING CORRECTION DISK (FD1904 – NL2866) • 3 threaded rods suitable for the foundation screw head • 3 M12 nuts for easy and precise adjustment • Thickness of the disk: 4 mm • Central opening for the installation of SPIRAL accesso

THE ACCESSORIES SPIRAL ADAPTER FOR IMPACT WRENCH (FD0616 – NL2385) • Ensures the connection between the installation tool and the foundation screw. • Central fastening with a single screw for easy, and secure assembly. • 6 peripheral tabs. • Integrated bubble level to check the verticality of the installation. • Hexagonal central he

THE ACCESSORIES SPIRAL MANUAL SCREWING BAR • Manual screwing kit for anchoring the foundation screw manually. • Consists of a pre-drilled rod for adjusting the height of the bar as screwing progresses • Span of 160 cm and thickness of 3 mm, providing a lever arm for easy tightening • 3 bolts + nuts to secure the tool on the screw. • The bar can be lifted during screwing to facilitate the pushing

INSTALLATION OF THE SCREW The ease of driving in the screw depends on following the installation steps, the equipment used, and the nature of the soil. ASSEMBLY OF THE SCREW AND THE DRILLING TOOL 1 - Securely couple the drilling tool with the head of the foundation screw. Use the M41 adapter for the use of an impact wrench (1). 2 - Perform the necessary rotations to reach the desired anchoring depth (minimum burying of 70 cm, 80 cm for G 1500 and S 1200 screws). 3 - Remove the tooling from the head of the foundation screw and install the required screw head (2). INSTALLATION WITH AN IMPACT...

INSTALLING THE SCREW MARKING GROUND PREPARATION Marking is crucial as it allows determining the precise locations of the necessary screws and ensures the alignment of the structure to be fixed. The creation of pilot holes and lubrication is essential to aid in the implementation of the foundation screw. 1 - Establish a reference line to align one side of the construction to be carried out. 1 - The pilot hole, whether manual or mechanical, will check the nature of the soil in depth and then facilitate the penetration of the screw into the ground. Use a crowbar and a mallet or a drill with a...

IMPLEMENTATION OF THE SCREW CAUTION, THE USE OF FOUNDATION SCREWS REQUIRES CHECKING FOR THE ABSENCE OF OBSTACLES AT THE DRILLING POINTS Step 2: Placing the joists Step 1: Installation of foundation screws Step 3: Double joisting Step 4: Placing the planks