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Sewerage / ADAC Version v6.0.0

MaintenanceHole

Element representing a sewerage Maintenance Hole (formerly Manhole).

Geometry: geometry_point_singlepoint
ADAC
ADAC Versions
v4.1 Introduced v4.2 v5.0.1 v6.0.0 LATEST

Attributes

Required and optional XML attributes
Use enum
Required

Use or purpose of this MaintenanceHole in the network.

Accepted Values
ValueDescription
Overflow Maintenance Hole with an overflow to the environment, receiving waters or an emergency storage.
Bifurcation Maintenance Hole with two or more outgoing sewer pipes including: (a) twin pipes (or multiple augmented pipes) (b) Major bifurcations that divert flows to separate sub-catchments (c) Minor bifurcation that diverts flow for only short distance downstream before merging into same trunk main/n(d) emergency storage
Blank End Maintenance hole with no incoming connection.
Pump Station Pit housing a sewer pump station.
Valve Pit Access Pit for a Sewer Valve.
Grit Collector MH Grit Collector Maintenance Hole.
Outlet Outlet
Rising Main Discharge MH A sewer MH that is the recieiving MH for a rising main discharge.
Vacuum Sewerage Pump Station A pit housing a Vacuum Sewerage Pump Station.
Vacuum Sewerage MH A Maintenance Hole on a vacuum system with incoming house connections or gravity sewers that may also containing a vacuum valve.
Vacuum Lift A chamber on a vacuum system containing a lift or vacuum valve but no incoming laterals.
Storage Tank An off-stream sewage storage tank for emergency or other use.
Maintenance Hole A standard Sewerage Maintenance Hole also known as a Manhole.
Screen Chamber Maintenance hole on overflow pipes with screens.
Unknown Chamber of unknown use at time of data submission.
Other Type of maintenance structure other than those used as standard in the Schema.
ChamberSize enum
Required

Represents the essential dimensions of the chamber. Contains a choice of structures that pertain to different configurations.

RectangularDimensions of a rectangular chamber.
Length_mm positiveInteger
Required

Length in millimetres.

Width_mm positiveInteger
Required

Width in millimetres.

ShaftSizeDiameter_mm positiveInteger
Required

Diameter of narrowest section of upper shaft immediately below access lid where different to ChamberSize. NOT expected to apply to Use; Blank End, Pump Station, Valve Pit, Outlet, Screen Chamber. Intent is to indicate if personnel entry is possible.

SurfaceLevel_m float
Required

The height of the top surface of the lid, hatch, rim or roof. Surface level in metres against the vertical datum for this project.

InvertLevel_m float
Required

The height of the top surface of interior floor/bottom. Invert level in metres against the vertical datum for this project.

FloorConstruction enum
Required

Method of chamber construction.

Accepted Values
ValueDescription
Prefabricated Prefabricated
Insitu Built or poured in-situ.
FloorMaterial enum
Required

Material type for chamber floor construction.

Accepted Values
ValueDescription
Concrete Concrete
FRP Fibre Reinforced Concrete.
GRP Glass Reinforced Plastic.
PE Polyethylene.
PP Polypropylene.
PVC Poly Vinyl Chloride.
M_1 A new material not in the schema as agreed with the receiving entity.
M_2 A new material not in the schema as agreed with the receiving entity.
Unknown Protection type unknown at time of data submission.
Other Another type of protection not covered by the schema.
WallConstruction enum
Required

Method of chamber wall construction.

Accepted Values
ValueDescription
Prefabricated Prefabricated
Insitu Built or poured in-situ.
WallMaterial enum
Required

Material type for chamber wall construction.

Accepted Values
ValueDescription
Concrete Concrete
FRP Fibre Reinforced Concrete.
GRP Glass Reinforced Plastic.
PE Polyethylene.
PP Polypropylene.
PVC Poly Vinyl Chloride.
M_1 A new material not in the schema as agreed with the receiving entity.
M_2 A new material not in the schema as agreed with the receiving entity.
Unknown Protection type unknown at time of data submission.
Other Another type of protection not covered by the schema.
RoofMaterial enum
Required

Material type for chamber roof construction.

Accepted Values
ValueDescription
PVC PolyVinylChloride.
PE Polyethylene.
PP PP
Concrete Concrete
FRP Fibre Reinforced Concrete.
MS Mild Steel
SS Stainless Steel
Aluminium Aluminium
Cast Iron Cast Iron
Grid Mesh - GRP Grid Mesh - GRP
Grid Mesh - Aluminum Grid Mesh - Aluminum
Grid Mesh - SS Grid Mesh - Stainless Steel
No Roof No Roof
M_1 A new material not yet in the Schema as agreed with the receiving entity.
M_2 A new material not yet in the Schema as agreed with the receiving entity.
Unknown Material is unknown at time of data submission.
Other Another material not included in the Schema.
Lining enum
Optional

The material that the channel is lined with.

Accepted Values
ValueDescription
PVC Poly Vinyl Chloride.
Epoxy Epoxy
Polyurea Polyurea
PE Polyethylene.
M_1 A new lining material not yet in the Schema as agreed with the receiving entity.
M_2 A new lining material not yet in the Schema as agreed with the receiving entity.
Unknown Material is unknown at time of data submission.
Unlined An alternative to entering a null value where there is no lining.
Other Another lining material not included in the Schema.
LidType enum
Required

Lid Structure loading type.

Accepted Values
ValueDescription
Trafficable Trafficable
Non-trafficable Non-trafficable
LidAccessRestraint enum
Required

Restraint applied to accessing structure.

Accepted Values
ValueDescription
Bolt Down Lid is bolted down.
Hinged Lid fixed by hinges on one side.
Crab Pot Steel frame over lid with central pole allowing lid to raise and lower during overflow event. Used on Emergency Overflow Structures.
Meshed Mesh added for void/fall protection.
None Lid is free to lift off Maintenance structure allowing unimpeded access.
LidMaterial enum
Required

Chamber lid configuration and material.

Accepted Values
ValueDescription
Cast Iron Cast Iron
Aluminium Aluminium
CI Concrete Infill Cast Iron with Concrete Infill
Composite Composite
Concrete Concrete
DI Ductile Iron.
PVC PolyVinylChloride.
PE Polyethylene.
PP PP
MS Mild Steel
SS Stainless Steel
No Lid No Lid
M_1 A new lid material not in the schema as agreed with the receiving entity.
M_2 A new lid material not in the schema as agreed with the receiving entity.
Unknown Lid material unknown at time of data submission.
Other Another lid material not included in the Schema.
DropType enum
Required

Chamber drop types.

Accepted Values
ValueDescription
External Drop MH with one or more external backdrop vertical entries.
Alternative External Drop Alternative drop type with complex access arrangement or modified benching as shown on WSAA drawing SEW-206.
Internal Drop MH with one or more internal backdrop vertical entries.
Oblique 45deg Backdrop MH with an oblique 45° backdrop entry.
No Drop MH has no drop inlets or MH is a pump station, valve chamber, or storage tank.
Benching enum
Required

Indication of benching level relative to outlet pipe. Used for volumetric calculations in modelling.

Accepted Values
ValueDescription
Top of outgoing pipe Indication of level of benching compared with structure outlet pipe.
Mid level of outgoing pipe Indication of level of benching compared with structure outlet pipe.
No benching No benching
Other Benching other than top or mid level of outlet pipe.
CatchmentPS String_32
Optional

The identifier of the pumpstation that this node flows to.

LineNumber String_32
Optional

The identifier of the line that this node connects to.

MH_Number String_32
Required

The identifier of this manhole or pit.

Chainage_m Float_Positive_NonZero
Optional

The distance upstream from end of line.

TieDistance_m Float_Positive_NonZero
Optional

The tie distance in metres to a cadastral corner.

OffsetDistance_m Float_Positive_NonZero
Optional

The offset distance in metres from a cadastral boundary.

Rotation Float_Direction
Required

Rotation angle (cartesian - anti-clockwise 0 degrees = East)