Abstract: An apparatus for positioning a dowel within a concrete slab is disclose. The apparatus comprises a substantially planar mounting flange that is used to mount the apparatus onto a wooden form, and a dowel guide that extends perpendicularly from the plane of the mounting flange.Together, the mounting flange and the dowel guide define a dowel passage that is aligned with a corresponding hole in the wooden form. The dowel passage allows a dowel to be slipped through the apparatus and through the hole in the form, and to extend into the region where the slab is to be poured. The invention allows dowels to be properly and consistently aligned before and during the pouring of a concrete slab.

Abstract: A screed rail assembly for use in the construction of concrete slabs includes an elongated rail having a plurality of locking members that extend outward from the sides of the rail. The locking members provide a positive mechanical connection between the concrete slab and the screed rail, preventing structural damage due to external forces exerted against the slab. An elongated protective strip extends along the top surface of the elongated rail, further protecting the junction between the slab and the rail from damage due to external forces.