Clause 19.2a

It is agreed that the Insured by this Section extends to include all sum which the Insured shall become legally liable to pay in connection with damage to property other than the Property Insured under Section I caused by collapse, subsidence, vibration, weakening of Support or lowering of ground water arising out of or in the course or by reason of the carrying out of the Insured Contract Works except the damage caused by the negligence, omission or default of the Contract, his Servants or Agents or any their Co-Contractors, Sub-Contractors and Suppliers their Servants or Agent
Attributable to errors or omission in the designing of the works.