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Riser Frame

The riser frame both blocks the open manhole during construction and provides a raised, bright, visual warning of the manhole presence to prevent pedestrians or vehicles falling into the open manhole and prevent debris falling into the pipeline. As construction resumes the riser frame acts as a liner ensuring correct alignment of seating rings or brickwork or acting as a former for concrete pouring. The liner can be cut to height once the manhole access is ready to be exposed.

Key Features

  • Patented design: UK Patent No. GB2574070; US Patent No. 11008728
  • The raised profile and bright colour prevent pedestrians from falling into the manhole whilst it is left open during construction. It also warns plant operators of the location of the shaft
  • The manhole opening is covered by the riser frame to prevent debris from falling into the manhole, being swept along the pipeline and causing a blockage
  • The riser frame is pushed into place and locates itself on the cover slab, no fixings are required to hold it in position
  • Can be easily removed if access to the manhole is required during the construction phase
Product Information
Manhole Riser Frame

Grate

This product is a gate which is fitted below the manhole cover and prevents a pedestrian falling into the manhole if the cover has been displaced during storm or surcharge conditions or through theft. The grate can also be locked to prevent unauthorised access.

Key Features

  • Patented product: UK Patent No. GB2574069B
  • Prevents pedestrians from falling into the manhole if the cover has been displaced by storm waters, surcharge or stolen. In flood conditions the manhole opening might not be visible due to flood waters.
  • The grate is fixed via a hinge to the manhole and has an open design to prevent displacement by surcharge
  • Can be locked closed with a padlock or similar to prevent unauthorised access
  • Can be locked open or closed with a lockout hasp (available separately) to prevent personnel being accidentally trapped in the manhole
Product Information

Lockout Hasp

This product allows multiple padlocks to be fitted in place of a single padlock. This ensures that an access gate or similar cannot be locked until all personnel are clear and have removed their personal padlock. It can also be used in the locked position to restrict lone working. More than one padlock has to be removed before the gate can be opened. This is compatible with the Caswick grate.

Key Features

  • Helps to prevents personnel from being inadvertently trapped inside a restricted area as part of a safe system of work
  • Helps to restricts single person working
  • Can be put in place of a single padlock to allow up to 4 padlocks to be used
  • Can be chained together if more than 4 padlocks are required
  • Manufactured from 304 stainless steel for corrosion resistance
  • Can be used in conjunction with the Caswick Grate and Riser frame
Product Information