Abstract: A rebar spacer having a clip for securely holding a rebar centered in the clip such that the rebar cannot be dislodged from the clip once the clip engages the rebar. The clip is held at a desired height by a base, which will not easily tip over do to a wide stance of the base of the rebar spacer. The rebar spacer will quickly and easily accept the rebar in the clip. The rebar spacers can have a large or small footprint at the surface of the concrete. The rebar spacer can be made of lightweight, durable plastic. The rebar spacer can be molded as one inexpensive piece. The rebar spacer can have a variety of heights and accept a variety of rebar sizes.

Abstract: A hole former for a manhole with an invert, which aligns the hole with the invert such that pipes are properly aligned and will not leak or cause damming when connected to the manhole. The hole former has an alignment member with a central aperture as a part of the hole former or a separate part. The alignment member has a central cylindrical male portion, which fits into a central cylindrical female portion of the hole former to align the hole former and the alignment member. The invert has a tube on the central axis of its pipe portion. A straight bar inserted in the central axis of the alignment member and the tube in the invert aligns the hole former with the invert. When cement is poured over the hole former, the hole formed will be properly aligned to allow a pipe to be connected to the manhole.

Abstract: A hole former assembly used to form a reusable hole former assembly used during the construction of a manhole base. The hole former assembly of the present invention aligns the center of the formed hole in the concrete manhole base sidewall with the center of an inlet or outlet opening of a canal bed liner embedded in the base of the manhole. The hole former assembly is suitable for use in either wet casting or dry casting the base of the manhole with the inlet and/or outlet of the invert embedded in a sidewall of the base of the manhole. Several of the component parts of the hole former assembly of the present invention may be molded as a single unit and thereafter separated, thereby reducing certain manufacturing costs of the component parts.