2. One stay - to be attached at the middle phase.
    Two stays - to be attached at the top and bottom phases.
    Three stays - to be attached at the top, middle and bottom phases.

3. For shielded structures, the top stay to be attached to the shield wire.

4. Stay wire 7/4.00 stay wire 1100MPa UTS of 96kN for MV lines.
    Stay wire 19/2.35 stay wire 1100Mpa for HC lines.
    Stay rod to be 24mm diameter, 2.4m long, planted 2.2m deep for HC lines.
    Stay rod to be 20mm diameter, 2.0m long for MV lines.
    Stay plate to be a minimum of 450mm x 450mm x 6mm thick for HC lines.
    Stay plate to be a minimum of 350mm x 350mm x 6mm thick for MV lines.
    Stays to be planted at 45 degrees to vertical.

5.  Shield wire assumed to be 7/3.35 shield wire 1100MPa.

6.  Factor of safety used on concrete poles is 2.5 as per the OHS Act.

7  Use 10kN post insulators on intermediate structures.
    Use 33kV 10kN post insulators for HC lines.
    Use 22kV 4kN post insulators for MV lines.

8. Side ties for appropriate conductor size to be used.

9. Everyday tension 20% of UTS at 15 degrees celsius.

10. Bisector stays may be splayed 5 degrees of bi-sector.

11. Construction load on conductor max 40% UTS.

13. With soil conditions differing, care must be taken when planting and compacting stays. Compaction around the pole and stays is to be done in 150mm       layers with a hand-compactor weighing more than 13kg in weight.

14. 700Pa wind pressure was used in the design of the poles.

15. Weight span is the load of the conductor on the insulator.

16. Electrical clearance span is the phase spacing to prevent electrical clashing. Wind span is the load of the wind on the conductors and pole.

18. All stays in types 1 and 2 soil to have six pockets of cement added to excavated soil, which is then thoroughly mixed and compacted in 200mm layers       with an 11kg hand-compactor.

Typical Soil Types

Where soil that has a poor resistance to loads (sandy soil, clay, turf, etc.) the foundation will need to be redesigned. For each stay or pole planted, two pockets of cement are to be added to the excavated soil. This is to be thoroughly mixed, moistened, then layered in 150mm layers and compacted with a hand-compactor weighing no less than 13kg. Compaction is to continue until no further settlement occurs. Once complete, the next 150mm layer is to be laid and compacted. This is to continue until the hole is filled with the compacted sand/cement mix. The soil condition must be approved by a professional engineer.