A form carpenter per diem job involves building forms that retain concrete while it sets. Per diem form carpenters work on a contract with a fixed daily rate. You can perform your duties in this career on residential home projects, commercial buildings, and industrial-scale projects, such as bridges, highway constructions, and other structures. Your responsibilities include taking steps to measure and cut the components if necessary and then install the mold so that it retains the concrete during the setting process. Formwork often involves using pre-cut forms, but you may need to make adjustments for the needs of each project.