Despite the speed and ease of slipform paving, there are still many applications where fixed paving forms may be more practical and cost-effective. These include streets, intersections, local roads, and complicated short-run or variable-width pavements. A typical paving form is a steel section with a face that is the same height as the proposed pavement thickness. It has a wide, flat base for stability and an upper rail to carry paving equipment. Form sections are usually 10 feet long, and form pins (or stakes) are used to fasten the form to the subgrade.
For good results when using fixed paving forms, make sure the forms rest on a firm and level subbase, adjacent form ends are locked tightly together, and forms are staked with a minimum of two iron pins every 10 feet. The use of string line can help ensure proper form alignment. Fasten string line securely on form pins at the proper finish grade, then draw it taut to prevent sags between pins.