Toad Hole, Spofforth, Harrogate

WORK INCLUDES (PHASE 1)

• Excavate and remove concrete manhole rings and brick section of the structure.
• Excavate to proposed sub-base
• Lay well compact granular fill and concrete sub-base
• Place CSR Pipe into concrete sub-base
• Form concrete surround
• Install back of wall drainage with geotextile material
• Backfill with no fines concrete with geotextile material
• Install temporary road. Removed hedges and boundary walls
• Install TVCB, barriers and fencing

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ADDITIONAL WORKS INCLUDED

• Remove masonry stone arch
• Excavate to proposed base
• Lay granular and concrete base
• Place CSR Pipe into concrete base
• Form concrete surround, with 50mm fibre board placed between the two different sections
• Apply bitumen emulsion to concrete surround
• Backfill with no fines concrete and geotextile material
• Parapet and spandrel walls rebuilt using existing stone and a 1:1:6 mortar mix
• Reinstate surfacing
• Install concrete toe beam and invert throughout the pipe
• Build training walls, existing stone reused
• Remove temporary road
• Erect post and wire boundary fence around downstream headwall
• Reinstate all embankments using granular fill and topsoil
• Reinstate boundary wall. Hedge row reinstated with a 4 post and rail fence and new hedge plantings
• All verges to be reinstated using topsoil and grass seed

ADDITIONAL WORKS INCUDED

• Ecologists employed to carry out wildlife surveys and monitor the works in progress
• Applying for and working within the Environmental agency permit (EA)
• Working over/adjacent to water

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KEY RISKS / CHALLENGES

• The structure is located within a flood plain
• Pollution prevention to main watercourse
• Private water mains located either side of the structure, safeguard the integrity of the mains during works

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COLLABORATION AND VALUE ADDED

• Masonry wall rebuilding undertaken by our own directly employed masons ensuring consistent quality
• Surfacing works undertaken by our own in-house team ensuring quality and timescales can be maintained

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SUCCESSFUL OUTCOMES

• No accidents
• No Pollution incidents
• Safe Guarding the structure for the future
• No delays with an early contract completion
• Within the financial budget