The screw system for wooden houses.
Prevents the occurrence of gaps between beams
Pulls the beams together with a force of up to 1200 kg
Saves heating costs up to 40%
Screw according to DIN 571
Reduces maintenance costs
Spring - screw system TEDWALDI
1 - Hexagon head 14 mm with fixed washer
2 - Yellow galvanizing
3 - Screw 10mm
4 - washer
5 - Conical compression spring
Sectional drawing
1 - Mounting hole for spring screw system TEDWALDI (the hole ensures that the spring is able to expand over time)
2 - compression spring (Reduces the effects of shrinkage of the beams)
3 - Wood screw (Pressing the beams together to eliminate the gaps between them)
4 - Drill hole 14 mm (allows the wood to shrink and expand)
5 - Screwing in the lower beam is done without pre-drilling a hole
6 - Wall material (log beams, log planks)
Assembly instructions
Marking out
Firstly, the drilling points for the TEDWALDI spring and screw system must be marked. In each case at the ends and then, depending on the size, position and length of the beam, every 1.5 to 1.8 metres. In each subsequent row, the fastenings are marked 100 - 150 mm to the left or right.
Drilling
The fastening holes in the beam are drilled using an offset drill.The fixing hole for the spring and the through hole for the screw are drilled in one hole.The first part of the drill provides the through hole for the screw. The second offset part makes the fastening hole for the spring. The depth of the hole depends on the height of the joists. The through hole is important for unhindered movement of the screw. If the length of the drill bit is not sufficient, it must be extended.
Screwing in the spring screw system
Once the beams are in the correct position and the holes have been pre-drilled, the TEDWALDI spring screw system is screwed in. Screwing in is best done with a suitable drill/ cordless screwdriver and a nut. The spring screw-in system is screwed in until the spring is fully compressed and the air gap between the beams is eliminated.
Details
If the beams cannot be joined together, determine the cause. Remove wood shavings or other objects and straighten any twisted beams. Then re-insert the spring screw systems into the locating holes and screw together again. Further information can be found in the ‘TEDWALDI’ brochure, with detailed step-by-step instructions.
