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for minor or incidental work such as facing a layer of rock or hard strata unlike what mentioned in tender documents then the engineer may order that work is a variation shall be executed on a daywork basis.
before beginning with work the contractor shall provide the engineer with quotations of good, equipments rates etc.


For payments. the contractor shall submit an accurate statement on a daily basis including the resources details for previous day work
1.names, designation and times of contractor persons
2.type, number, time for equipment.
3.quantities and type of material and goods used.
the engineer may reject the submitted documents if he suspects the contractor is exaggerating the time and number of contracts person, material and equipment. therefore he could ask for more verification. after agreeing and verifying submitted statement the engineer will sign it and return to contract. then the contractor will price and submit the statement. 



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