A height adjustable device pit (10) is provided for use in installing water meters (12) or other equipment below ground level. The device pit (10) includes a lower housing section (14), an upper housing section (16), and a lid (18). The lower housing section (14) and the upper housing section (16) are engaged with each other by mating screw threads (20) and (22) that are centered on a vertical, longitudinal axis (24). The housing sections (14,16) are movable relative to each other along the longitudinal axis (24) to adjust the vertical height of the device pit (10) in response to relative rotation of the housing sections (14) and (16) about the longitudinal axis (24).

A manhole cover assembly comprises a base frame, the base frame comprising a base body and a base flange extending laterally outward from the base body. The assembly further comprises a top frame, the top frame comprising a top body disposed annularly about at least a portion of the base body, a top flange extending laterally outward from the top body, and a lip extending laterally inward from the top body.

A vertical manhole apparatus for use in a waste facility to provide access to one or more leachate collection pipe access points. The vertical manhole is stabilized using stabilizing features extending out from a vertical pipe of the vertical manhole apparatus.

A manhole cover assembly comprises a base frame, the base frame comprising a base body and a base flange extending laterally outward from the base body. The assembly further comprises a top frame, the top frame comprising a top body disposed annularly about at least a portion of the base body, a top flange extending laterally outward from the top body, and a lip extending laterally inward from the top body.

A manhole cover assembly comprises a base frame, the base frame comprising a base body and a base flange extending laterally outward from the base body. The assembly further comprises a top frame, the top frame comprising a top body disposed annularly about at least a portion of the base body, a top flange extending laterally outward from the top body, and a lip extending laterally inward from the top body.

Provided are a reinforcing method and a reinforcing structure for a manhole having a neck part in a position shifted from the middle part of an upper slab which allow the buried manhole to be reinforced sufficiently against stress inflicted thereon while reducing the operation and material costs involved in the reinforcement. The manhole reinforcing method according to the invention is a method for reinforcing a manhole including a rectangular trunk part having an upper slab, a sidewall, and a lower slab and a neck part provided in a position shifted from a middle part of the upper slab of the trunk part, the method includes providing a strip-shaped reinforcing member of reinforced fiber at the upper slab and the lower slab while refraining from providing the strip-shaped reinforcing member at the sidewall, and fixing an upper part of the sidewall and the upper slab and a lower part of the sidewall and the lower slab each by a reinforcing member at the middle part of the sidewall in the longitudinal direction of the trunk part.

A manhole assembly comprising a plurality of interconnected longitudinal manhole segments is provided. In an embodiment, the plurality of interconnected longitudinal manhole segments may comprise a first edge comprising a plurality of dowel pins, a second edge comprising a plurality of dowel holes, a curved wall extending between the first edge and the second edge, and a plurality of clip bosses extending periodically along the first edge and the second edge. In another embodiment, the plurality of interconnected longitudinal manhole segments may comprise a plurality of hinges extending periodically along the first edge and the second edge.

A manhole assembly comprising a plurality of interconnected longitudinal manhole segments is provided. In an embodiment, the plurality of interconnected longitudinal manhole segments may comprise a first edge comprising a plurality of dowel pins, a second edge comprising a plurality of dowel holes, a curved wall extending between the first edge and the second edge, and a plurality of clip bosses extending periodically along the first edge and the second edge. In another embodiment, the plurality of interconnected longitudinal manhole segments may comprise a plurality of hinges extending periodically along the first edge and the second edge.

A height adjustable manhole cover including an outer unit assembly, an inner unit assembly. The inner unit assembly is secure on top of a concrete manhole unit by means of a flange under a driving road surface. The inner unit assembly further includes on top an external threaded area. The outer unit assembly includes an internal threaded area on bottom thereof. The outer unit assembly supports a manhole cover. The outer unit assembly is surrounded by means of a base course under the asphalt. The outer assembly includes cleats formed about the top of the outer assembly. A user would then interact with the cleats to rotate the outer unit assembly to a desired orientation to adjust the height thereof, therefore, the manhole cover can be adjacent to the driving road surface.

These are individual walls (1) of modular dimensions with the confronting side edges (2) enabling the beveled finish to be mounted, so that the junction of four walls (1) at 90 create a modular junction box (3), each with a groove (8) at 90 and a rib (9) at 45 that enables assembly by sliding and double locking, configuring back pressure fittings between said walls (1).