Length - 05:06 A builder's level or laser level is used when forming concrete to ensure the proper amount of "fall" or slope on the formwork. The purpose of using the level is to make sure the proper amount of slope is present to prevent water or other liquids from sitting on the concrete surface. Using the traditional builder's level is just as good a technique as using a laser level, however it takes a minimum of two people to operate. When using the one person laser level on the job site, be sure all adjustments are tightened and that the tripod stakes are secure. Align the story pole flush with the top of where the new slab will be. Begin moving the sensor up or down along the story pole until you hear beeping which indicates that you are level. Next, move out to your grade stake, the lowest point of the formwork, and raise or lower the story pole until you hear beeping. Mark the grade on the formwork. The pencil line represents a level line with the highest point of the slab. Use this line to determine how much fall you want on the slab.
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