Precast Manhole Forms

Dynasty Manhole Forms
Streamline your wetcast manhole production. Cut Labor costs Dramatically.

• Sizes from 4 ft to 12 ft inside diameter.
• 1/4" plate outer jacket reinforced with heavy plate ribs.
• 1/4" plate outer jacket reinforced with heavy plate ribs.
• Two piece jacket with 3 in channel ribs. Hinged jacket also available.
• Base, riser, slab and dome forms available.
• Gang strip step pins available.


A truckload of manhole forms headed to Vermont.

Riser Forms

• 3/8 in plate lift eyes.
• Gang strip step pins.

manhole riser details showing gang step pins

Trunnions & Heavy Pouring plate

• Trunnions made of heavy solid steel bars.
• Adjustable angle mounts for different height product.
• 1/2" Pouring plate with heavy ribs to stay flat.

manhole base sections showing trunnions and heavy pouring plate

Eccentric dome forms

• 3/16" steel plate skins.
• Gang strip step pins standard.
• Heavy pour plate and ribs.

Eccentric dome forms in the shop.

Special risers with included header ring.

• Header ring welded into jacket halves.
• Save hours and hours of setup and stripping time.
• Faster than most drycast plants.

manhole risers with header welded into the jacket





Dynasty Metal Works INC
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