Summary Builds rough wooden structures such as concrete forms, scaffolds, tunnel and sewer supports, and temporary frame shelters by performing the following duties.   Essential Duties and Responsibilities include the following. Other duties may be assigned.   Examines specifications to determine dimensions of structure.   Measures boards, timbers, or plywood, and marks cutting lines on materials.   Saws boards and plywood panels to required sizes.   Nails cleats (braces) across boards to construct concrete-supporting forms.   Braces forms in place with timb