Hi Mart
You will need to ask the Main Contractor for the type of Hoist to be used and the supplier should provide the tie load specification/ loads.
For a 1000kg hoist it would probably be something like an Alimak goods hoist platform, which I would not recommend tieing to the scaffold.
The hoist loads will depend on the height of the hoist mast, number of gates, distance from the scaffold, etc.
I do not like the hoists being tied to the scaffold generally, but some of the new type hoists, and lower capacity hoists, do not put massive loads on the scaffolds. The loads can be taken back through the scaffold to drilled anchors or ties, which need to be tested to 1.5 times the loads.
All the best
Chris Eng :idea: