HP Manholes Structures

Our HP Manholes were developed to handle larger pipe diameters, provide access, and meet structural performance standards for traffic applications. This larger diameter manhole was developed with performance, ease of maintenance, and cost effectiveness in mind. It is lightweight for ease of installation and is a perfect solution for installations where water tight performance and corrosion is a concern.

48" HP Manhole

48" HP Manhole

48" HP Manhole

48" HP Manhole

Fiberglass Manhole

Fiberglass Manhole

36" Manhole with ladder

36" Manhole with ladder

48" (1200 mm) HP Manhole - 3 Angles

48" (1200 mm) HP Manhole - 3 Angles

48" HP Manhole Inside

48" HP Manhole Inside

48" HP Manhole Installation

48" HP Manhole Installation

Concrete Manhole

Concrete Manhole

48" (1200 mm) HP Manhole - Side View

48" (1200 mm) HP Manhole - Side View

48" (1200 mm) HP Manhole - Back View

48" (1200 mm) HP Manhole - Back View

HP Manhole Weir Structure

HP Manhole Weir Structure

48" (1200 mm) HP Manhole 45 Degree

48" (1200 mm) HP Manhole 45 Degree

48" HP Manhole
48" HP Manhole
Fiberglass Manhole
36" Manhole with ladder
48" (1200 mm) HP Manhole - 3 Angles
48" HP Manhole Inside
48" HP Manhole Installation
Concrete Manhole
48" (1200 mm) HP Manhole - Side View
48" (1200 mm) HP Manhole - Back View
HP Manhole Weir Structure
48" (1200 mm) HP Manhole 45 Degree

Features and Benefits

HP Manhole features include:

  • PVC body, water tight gasketed connections, and accepts a variety of ductile iron inlets and covers.
  • Provides watertight connections for a wide range of pipe connection types and sizes up to 36” (900 mm) diameter.
  • Manhole accepts a variety of 30” (750 mm) diameter manhole covers and inlet grates
  • Structures tested to meet H-20 traffic loading
  • Materials provide long-service life, excellent abrasion and corrosion resistance
  • Light weight structure constructed from PVC for easy installation
  • Provides significant installed cost savings
  • Design minimum pipe angles comparable to 60” (1500 mm) precast concrete manhole
  • Ladder option provides access to pipe collection system
  • Installs three times faster than traditional precast
  • Structures can be factory built with weirs and other water quality features

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