Endorsement 101 Special conditions concerning the construction of tunnels, galleries, temporary or permanentsubsurface structures or installations

It is agreed and understood that otherwise subject to the terms, exclusions, provisions and conditions contained in the Policy or endorsed thereon, the Insurers shall not indemnify the Insured in respect of the expenses incurred for

– alterations in the construction method or due to unforeseen ground conditions or obstructions,

– measures which become necessary to improve or stabilize ground conditions or to seal against water ingress unless necessary to reinstate indemnifiable loss or damage,

– removing material which has been excavated, or due to overbreak in excess of the design profile and/or for refilling cavities resulting therefrom,

– dewatering unless necessary to reinstate indemnifiable loss or damage,

– loss or damage due to breakdown of the dewatering system if such loss or damage could have been avoided by use of standby facilities,

– the abandonment or recovery of tunnel-boring machines,

– the loss of bentonite, suspensions, or any media or substance used for excavation support or as a ground-conditioning agent.


In the event of indemnifiable loss or damage the maximum amount payable under this Policy shall be limited to the expenses incurred to reinstate the insured property to a standard or condition technically equivalent to that which existed immediately before the occurrence of loss or damage but not in excess of the percentage as stated below of the original average per-metre construction cost of the immediate damaged area.

Maximum percentage payable: %