"Will the client be happy with the workmanship and products"
It’s good practice to request a subcontractor or supplier produce a sample, or build a mock-up, of the product they are supplying. In fact, this is often a client requirement which should be included in the request to price or tender and contract documents.
The purpose of a sample or mock-up is to ensure that:
"If the client rejects the sample even though it meets specifications then they may be liable for additional costs to satisfy their new requirements"
Just a word of caution though, a sample or mock-up should not cause the client, Engineer or Architect to make fundamental changes to the specified product or finish, that will incur additional costs to either the contractor or the subcontractor. If this does occur the client should be informed there will be a variation. Obviously if there are quality problems with the original sample or mock-up, or the samples don’t meet the required specifications, these are the contractor’s and subcontractor’s issues, and should be rectified at no additional cost to the client.
It’s important, if the client or their representative has requested the sample or mock-up, that it’s formally approved, either in writing or within the minutes of a project meeting. I’ve often had the client claim part way through the project that they never actually approved the item.
"Samples should remain to the end of the project."
If possible, the sample or mock-up should remain to the end of the project, or at least until after the actual installed product has been accepted by the client. This should prevent arguments with the client over the standard of the final product since it should be the same as the approved sample.
#constructionquality #constructionmaterials #constructionsubcontractors
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