Various types of outlets can be incorporated into the wall of concrete pressure pipe during manufacture to accommodate branch lines, manholes, air relief valves, and blowoffs. For outlets with end connections other than those shown in this section, see Section Eleven of the Price Brothers Concrete Pressure Pipe Engineering Manual.

To preserve the strength of the pipe wall at the point where the outlet is installed, additional reinforcement is required. Collars, saddles, or reinforcing bands are used, depending on the size and type of outlet.

The position of an outlet is located by reference to the distance from the centerline of the outlet to the spigot end of the pipe. The distance between the centerline of the outlet and either end of the pipe must be great enough to allow for the additional reinforcement that is required.

Small, threaded outlets can be provided at the joints by welding a steel casting to a reinforcing band attached to the steel cylinder. For larger outlets, the steel outlet neck is centered on and welded to a reinforcing band attached to the pipe cylinder.

Typical threaded outlet in lined cylinder pipe (LCP)

Typical threaded outlet in embedded cylinder pipe (ECP)

Access Manholes

Boiler-type access manholes can be furnished in all sizes of pipe over 30 inches in diameter. The elliptical opening provided is 16 inches by 18 inches. The manhole frame, cover, and arches are of cast steel. The cover is chained to the frame to prevent loss.

A boss is cast in the cover for a 2-inch or smaller threaded outlet, if it is necessary. Two arches, bolts, and nuts and one cover, gasket, and chain are furnished as a complete assembly.

Access manhole cover assembly

Plan view	Circumferential section

Longitudinal section

Typical centerline outlet in lined cylinder pipe (LCP)

Note: The above view shows two styles of outlets: flanged (top half) and mechanical joint bell (bottom half).

Outlets can be furnished as: Price Bell Price Spigot mechanical joint bell mechanical joint spigot flanged Victaulic See Section Eleven of the Price Brothers Concrete Pressure Pipe Engineering Manual for details of end connections.

Note: The above view shows two styles of outlets: flanged (top half) and mechanical joint bell (bottom half).

Typical tangent outlet in lined cylinder pipe (LCP)

Note: The above view shows two styles of outlets: flanged (top half) and mechanical joint bell (bottom half).

Tangent outlets are most commonly flanges or mechanical joint bells, as shown here, but can be furnished with other end connections.

Note: The above view shows two styles of outlets: flanged (top half) and mechanical joint bell (bottom half).