Manholes can be manufactured using a variety of materials including precast concrete, plastic, and fiberglass. The chosen manhole material can vary based on a variety of factors including the shape of the manhole and the intended manhole function. Depending on the material that is chosen, the manufacturing process will vary.

Designed to Angle The Hook for Those Hard to Reach Manholes, Zinc-plated, 5/0 Chain, Made of 4130 Tempered Steel, Heat Treated to 3 to 35 Rc, Oil Quench, Anchor Shackle, Threaded Connector Included (1) Drop Axles Ensure Height Remains The Same As When Using Standard Wheels, Puncture Proof (1)

Polyurethane injection is ideal for manhole rehabilitation as it is causes minimal disruption, a small footprint, and requires no-excavation. We inject our polymers through 5/8″ holes through the manhole wall, or from the surface. Once injected, the polyurethane expands up to 25 times its initial volume and fills any present voids, and ...

Manhole Shields. Specially designed manhole trench shields (manhole trench box) allow your job to progress smoothly and safely. Pro-Tec Equipment's manhole shields are designed and engineered to superior strength standards, using the same rugged design and materials used on the ProSeries line.

Manhole grouting is a viable rehabilitation technique utilized to prevent runoff and groundwater from seeping into an otherwise structurally sound manhole. Grouts have a variety of chemical formulas that are matched to be compatible with local soil conditions and manhole materials.

Risers keep manholes at grade in heavy hurricane area. Problem: Fairhope is a small city of just 15,000 residents situated on the cliffs and shoreline of Mobile Bay in Alabama’s Gulf Coast.Infrastructure maintenance can be a challenge here for all the usual reasons and one unusual one: The city has a history of devastation and flooding by hurricane, including Hurricane Frederic in 1979 and ...

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Most US Foundry solid manhole covers, (Round and Rectangular), can be made watertight. This application is ideal for preventing surface water infiltration, gas or steam tight up to 20 p.s.i. Watertight castings are supplied with gaskets and fasteners. Users and specifiers should recognize that periodic inspection and maintenance should be ...