The estimate will be written up in the order that materials will be purchased, released and installed. The purpose of preparing the estimate in this sequence provides the means to control and monitor the job from start to finish.
It is during the write-up that other materials will be derived from materials that have been counted. This method of obtaining quantities from quantities adds the necessary materials for a detailed and accurate estimate.
As each item is written-up, place a check mark by the item on the worksheet or under the item on the drawing to show that it has been transferred to a pricing sheet. When listing materials such as pipe, fittings and wire, always start with the smallest size.