Provided always that
The Insurers indemnify the Insured in respect of liability for loss or damage to any property or land or building only if such loss or damage results in the total or partial collapse,
- the Insurers indemnify the Insured in respect of liability for loss or damage to any property or land or building only if pripr to the commencement of the construction its condition is sound and the necessary loss prevention measures have been taken,