民用工程合同书(21)

　　the "expected risks" are war （whether war be declared or not）， hostilities， invasion， act of foreign enemies， rebellion， revolution， insurrection or military or usurped power， civil war， or unless solely restricted to employees of the contractor or of his subcontractors and arising from the conduct of the works， riot， commotion or disorder， or use of occupation by the employer of any part of the permanent works， or any such operation of the forces of nature as an experienced contractor could not foresee， or reasonably make provision for or insure against all of which are herein collectively referred to as "the expected risks".
9　insurance works
　　without limiting his obligations and responsibilities under 8 hereof， the contractor shall insure in the joint names of the employer and the contractor against all loss or damage from whatever cause arising， other than expected risks， for which he is responsible under the terms of the contract and in such manner that the employer and contractor are covered for the period stipulated in 8 （1） hereof and are also covered during the period of maintenance for loss or damage arising from a cause，occurring prior to the commencement of the period of mainte - nance ， and for any loss or damage occasioned by the contractor in the course of any operation carried out by him for the purpose of complying with his obligations under 27 hereof:
　　　　（a）the works for the time being executed to the estimated current contract value thereof or such additional sum as may be specified together with the materials for incorporation in the works at their replacement value;
　　　　（b）the constructional plant and other things brought on to the site by the contractor to the replacement value of such constructional plant and other things.
　　such insurance shall be effected with an insurer and in terms approved by the employer ，which approval shall not be unreasonably withheld， and the contractor shall， whenever required， pro - duce to the employer the policy or policies of insurance and the receipts for payment of the current premiums.