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BS 7903:2020 Selection and installation of manhole tops and gully tops within the highway. Guide, 2020
- Foreword
- 1 Scope
- 2 Normative references
- 3 Terms and definitions
- 4 Classification [Go to Page]
- 4.1 General (see BS EN 124-1:2015, Clause 4 and Annex F)
- 4.2 Place of installation
- 5 Materials [Go to Page]
- 5.1 General (see BS EN 124-1:2015, 5.1)
- 5.2 Cover fillings (see BS EN 124-1:2015, 5.2)
- 5.3 Frames in combination with concrete (see BS EN 124-1:2015, 5.3)
- 5.4 Coating materials
- 5.5 Installation materials (see BS EN 124-1:2015, Annex F)
- 5.6 Compatibility of components
- 6 Design attributes [Go to Page]
- 6.1 Vents in covers (see BS EN 124-1:2015, 6.1)
- 6.2 Clear opening of manhole tops for man entry (see BS EN 124-1:2015, 6.2)
- 6.3 Depth of insertion (see BS EN 124-1:2015, 6.3)
- 6.4 Clearance
- 6.5 Compatibility of seatings (see BS EN 124-1:2015, 6.5)
- 6.6 Securing of the cover/grating within the frame (see BS EN 124-1:2015, 6.6)
- 6.7 Handling of covers and gratings (see BS EN 124-1:2015, 6.7)
- 6.8 Slot dimensions of gratings
- 6.9 Dirt pans and dirt buckets (see BS EN 124-1:2015, 6.9)
- 6.10 Positioning of covers and gratings (see BS EN 124-1:2015, 6.10)
- 6.11 Flatness of manhole covers and gratings (see BS EN 124-1:2015, 6.11)
- 6.12 Concaveness of gratings (see BS EN 124-1:2015, 6.12)
- 6.13 Surface conditions (see BS EN 124-1:2015, 6.13)
- 6.14 Manhole tops with sealing features (see BS EN 124-1:2015, 6.14)
- 6.15 Frame bearing area (see BS EN 124-1:2015, 6.15)
- Figure 1 — Installation materials and components
- 6.16 Frame depth (see BS EN 124-1:2015, 6.16)
- 6.17 Opening angle of hinged covers/gratings (see BS EN 124-1:2015, 6.17)
- 6.18 Covers with fillings (see BS EN 124-1:2015, 6.18)
- 6.19 Lifting provisions
- 6.20 Keyways
- Figure 2 — Keyways and keys
- 6.21 Frame web/gusset
- Figure 3 — Frame web/gusset
- 6.22 Kerb-type gully covers and frames
- Table 1 — Suggested minimum dimensions for kerb-type gully covers and frames
- 7 Performance [Go to Page]
- 7.1 Appearance (see BS EN 124-1:2015, 7.1)
- 7.2 Loadbearing capacity (see BS EN 124-1:2015, 7.2)
- 7.3 Permanent set (see BS EN 124-1:2015, 7.3)
- 7.4 Skid resistance
- 7.5 Child safety (see BS EN 124-1:2015, 7.5)
- 8 Testing (see BS EN 124-1:2015, Clause 8)
- 9 Assessment and verification of constancy of performance (AVCP) (see BS EN 124‑1:2015, Clause 9)
- Bibliography [Go to Page]