Is there any height restrictions on erecting independant tied scaffolds? I mean any maximum height recommended. Regards, Prads

If a system scaffold is in use, then refer to the manufacturers specs.,otherwise TG:20 for technical guidance.

The calculations on which TG20:08, for tube and fitting scaffolds, is based allow for a maximum height of 50m, dependent on scaffold configuration (width, tie patterm, boarded lifts, etc.) and wind speed at a particular location in the UK. You would have to check whether wind speeds in the middle east are comparable before relying on TG20. System scaffolds depend on the manufacturers user guide. I've no doubt that specific versions for the middle east exist, but in the UK most of the guides allow for 30m maximum. However, if you get a job specific design carried out, the maximum height can be much greater by using smaller bay sizes and more ties.