-Check the work of dam: Sample contractor and make experiments as directed by the supervising, the part up to the lagoon cycle been set out below and those where owner assigned to examine the relationship between the work of the dam and the water content or the weight gain. Test results must be submitted to the owner prior to construction. The test templates and the templates are browser not freeing the contractor from its responsibility for the quality of its engineering works. No replacement part would be approved by the owner that does not have a minimum of 3 experimental results unsatisfactory.-Maintenance and cleaning of the school:
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