The Caswick Riser Frame (Patent applied for) blocks the open manhole during construction. It provides a raised, bright, visual warning of the manhole presence and prevents pedestrians or vehicles falling into the open manhole. It also prevents debris falling into the pipeline.
During construction, the Caswick Riser Frame acts as a liner ensuring correct alignment of seating rings or brickwork and acts as a former for concrete pouring.
The Caswick Riser Frame can be cut to height once the manhole access is ready to be exposed.
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