In Iowa, Davis-Bacon general determinations do not have pre-determined increases for Prevailing Wage public works projects and are good for the duration of the project.  Special determinations can however be requested by the awarding body on a per project basis.  Special determinations are specific to the particular IA DBRA job you are working on and could contain pre-determined increases.  The contracting agency or awarding body in Iowa will provide the contractors with these special determinations.  The process for requesting a special determination takes at least 30 days.