Cover Slabs

  • Cover slabs are heavy duty reinforced.
  • Cover slabs can be provided with the access hole sizes shown or other non-kitemarked sizes such as 675 x 675.
  • Designers and users should ensure that they have taken into account the current requirements for manhole access as detailed in the Health and Safety Code of Practice, Regulations and Guidance issued by the Health and Safety Executive under the Confined Spaces Regulations 1997 and other relevant requirements.

Health & Safety – Access Sizes

Manhole shaft diameter, opening size and access arrangement are specified by the adopting authority or system designer. Guidance is provided in Sewers for Adoption and BS EN 752.

Cover Slabs

  • Cover slabs are heavy duty reinforced.
  • Cover slabs can be provided with the access hole sizes shown or other non-kitemarked sizes such as 675 x 675.
  • Designers and users should ensure that they have taken into account the current requirements for manhole access as detailed in the Health and Safety Code of Practice, Regulations and Guidance issued by the Health and Safety Executive under the Confined Spaces Regulations 1997 and other relevant requirements.

Health & Safety – Access Sizes

Manhole shaft diameter, opening size and access arrangement are specified by the adopting authority or system designer. Guidance is provided in Sewers for Adoption and BS EN 752.

Landing Slabs

  • Reinforced landing slabs are available for use in deep manholes.
  • Landing slabs have an effective thickness of 160mm for DN 1500 and 200mm for DN 1800 to 3000.

Adjusting Units / Seating Rings & Corbel Units

  • Designed to replace engineering bricks to seat a cast iron cover and frame.
  • Effective thickness is 65mm i.e.the thickness of a standard brick.
  • Average compressive strength similar to Class B engineering bricks.
  • Corbel unit (600 x 600 eccentric) for 750 x 600 slab access, is reinforced and weighs 140kg.

Health & Safety – Access Sizes

Manhole shaft diameter, opening size and access arrangement are specified by the adopting authority or system designer. Guidance is provided in Sewers for Adoption and BS EN 752.

Cover Slabs Data

ManholeOverall Dia.Effect. Thickn.Appr WghtAccess Size and Position
DN‘A’ mm‘B’ mmkg600 sq675 sq600 x 750750 sq
9001188135220CC
10501358135335EEC
12001538135480EEE* E
13501607160655EEE* E
15001789160855EEE* E
180021302001570EEE* E
210024502002165EEE* E
240027802002855EEE* E
270031202003660EEE* E
300034502004535EEE* E

* denotes non-kitemarked.

ManholeOverall Dia.Effect. Thickn.Approx WeightAccess Size and Position
DN‘A’ mm‘B’ mmkg600 x 900900 sq675 x 1200
9001188135220
10501358135335
12001538135480* C
13501607160655* E* CC
15001789160855* E* EC
180021302001570* E* EE
210024502002165* E* EE
240027802002855* E* EE
270031202003660E
300034502004535E

C denotes central.
denotes eccentric.

All cover slabs up to and including DN1200 are CE Marked.

Contact us to discuss your specific requirements.
Email info@stantonprecast.co.uk or call us on 0115 944 1448