Where any standard or code of practice is referred to in the Contract, other appropriate
national or international equivalents may be substituted subject to the approval of the
Engineer as described in Clause 3.0 hereof. Where other appropriate national or
international standards are offered the Contractor shall submit to the Engineer for approval a
copy of the alternative standard or code of practice in English and shall provide such further
information as is required to enable the Contractor to demonstrate to the Engineer that the
alternative national or international equivalent may be substituted.