A manhole base assembly and a method for making the same employ a non-cylindrical, low-volume concrete base that is fully lined to protect the concrete against chemical and physical attack while in service. This lined concrete manhole base assembly may be readily produced using a modular manhole form assembly which can be configured for a wide variety of geometrical configurations compatible with, e.g., varying pipe angles, elevations and sizes. The form assembly is configurable to provide any desired angle and elevation for the pipe apertures to interface with various underground systems, and can be formed on-site to facilitate compatibility with existing structures. The assembly provides for flexible, modular construction of a wide variety of lined manhole base assemblies at minimal cost, reduced concrete consumption and reduced operational complexity. The modular nature of the production form assembly also facilitates reduced inventory requirements when various manhole base assembly geometries are needed.

An anti-vandalism mounting system for monitoring water physical variables in open channels, which comprises: a first member, comprising a base with a plurality of perforations to introduce a plurality of anchoring means for fixing the first member to a system installation surface; a second member, which is fixed on the first member of the system by a plurality of anchoring means; a third member, arranged externally, which is attached to the first and second members from inside the system by anchoring means; and a fourth member, pivotally arranged in the lower part of the third member; wherein the first member comprises a plurality of compartments to house a plurality of devices for the operation of the system and for the monitoring of physical variables to be protected by the system; and wherein the system comprises an energy generating device and a plurality of safety devices, so that the fourth member is fixed to the third member of the system. A procedure for assembling an anti-vandalism mounting system for monitoring water physical variables in open channels.

A safety rail protection system disclosed herein is adaptable to be positioned adjacent to a portal. The system may include a hinged gate having an opening and first and second opposing members, with the hinged gate being operable to open from a closed position to an open position. A first side rail may be present, and may include a first side gate projection extending at least partially into the hinged gate opening, with the first side rail interfacing with at least one of the first and second opposing members when the hinged gate is in the closed position. A second side rail may be present, and may include a second side gate projection extending at least partially into the hinged gate opening when the hinged gate is in the closed position.

Embodiments of the application can provide methods and systems for the adjustment of gate valve boxes using custom fit gate valve box adjusters and the like. A gate valve box adjuster may include an alignment portion, an engagement key, a base plate, angle plates, and perhaps even an extension bar which may be attached to a motor and equipment.

Embodiments of the application can provide methods and systems for the adjustment of gate valve boxes using custom fit gate valve box adjusters and the like. A gate valve box adjuster may include an alignment portion, an engagement key, a base plate, angle plates, and perhaps even an extension bar which may be attached to a motor and equipment.

An apparatus and method is provided for structurally renewing and sealing a wall of a manhole. The apparatus includes a tubular sleeve impregnated with a hydrophilic or hydrophobic material capable of expanding when in contact with water, and a liner impregnated with a resinous material capable of curing and hardening. The apparatus is positioned in a manhole and inflated, which forces the tubular sleeve and the liner into contact with the wall of the manhole. The hydrophilic or hydrophobic material is forced into defects of the wall, thus sealing the wall, while the liner is allowed to cure and harden, thus structurally renewing the wall of the manhole.

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 safety landing may include a first support panel positionable within the shaft and having a first support surface and a second support surface spaced apart from the first support surface. At least a first platform may have a first end that is movably connected to the first support panel and a second end spaced apart from the first end. The first platform may have an upper surface, an opposing lower surface and an end surface at the first end. The first platform may be movably between a closed position in which the first platform extends laterally across the shaft, and in which the lower surface rests on the first support surface and an open position in which the first platform is generally upright and the end surface of the first platform rests on the second support surface.

A manhole riser system including upper and lower flanged rings with an adjustable height sleeve for raising the height of the manhole support cover frame to a new pavement level. The adjustable height sleeve is cut and overlapped for various dimensions and a pavement grade marking assembly provides for custom height cutting during placement assembly within the manhole.