IT1236896B - Disposable formwork for the production of concrete manhole covers and the like
- Google Patents
Disposable formwork for the production of concrete manhole covers and the like
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Publication number
IT1236896B
IT1236896BIT02274689AIT2274689AIT1236896BIT 1236896 BIT1236896 BIT 1236896BIT 02274689 AIT02274689 AIT 02274689AIT 2274689 AIT2274689 AIT 2274689AIT 1236896 BIT1236896 BIT 1236896B
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Publication of IT8922746A0publicationCriticalpatent/IT8922746A0/en
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Underground Structures, Protecting, Testing And Restoring Foundations
(AREA)
Sewage
(AREA)
Abstract
This invention deals with a disposable formwork for the production of concrete manhole covers and the like, characterized by the fact that it includes a block made of expansive synthetic material, with a cavity having a form related to the shape of the manhole cover to be produced, and encircled by a perimeter border.A poured casting of concrete is introduced into the above mention cavity, with the previous introduction of a reinforcing structure; the casting is then trimmed, taking advantage of the perimeter border as a reference check.The block of expansive synthetic material is able also to function as a packing element for the stockpiling and transport of the manhole cover thus produced.
IT02274689A1989-12-201989-12-20Disposable formwork for the production of concrete manhole covers and the like
IT1236896B
(en)
Hermetic seal for grave vaults or pits - consists of trough with lid made of synthetic resin reinforced with glass fibre, with rings and wires for concrete reinforcement