PNCC Sewer Mains

Sewer mains are large underground pipes that carry wastewater from suburbs and urban areas to the city’s wastewater treatment plant. These mains form the core of the gravity-fed and pumped wastewater network and are essential for the safe and effective transportation of sewage. This layer represents individual sewer mains and includes details such as pipe diameter, length, material, elevations, and trunk connections. Data is continually updated as new information is received. The vertical datum used for this dataset is NZVD 2016. Dataset Fields (Columns): Compkey Unique, auto-generated identifier for each pipe asset. UnitID Unit ID at the starting point of the pipe (upstream). UnitID2 Unit ID at the end point of the pipe (downstream). Diameter Internal diameter of the pipe (in millimetres). Length Length of the pipe (in metres). UpperIL Invert Level (elevation) at upstream end of gravity fed main. LowerIL Invert Level (elevation) at downstream end of the gravity fed main. Material Code indicating what the pipe is made from (refer to the material code list). Trunk Classification of pipe based on its role in the sewer network (refer to trunk classification list). Material Codes & Descriptions AC – Asbestos cement CI – Cast iron CLS – Concrete lined steel DS – Ductile steel GEW – Glazed earthenware GEWCIP – GEW cured in place pipe GEW-PL – GEW plastic lined HDPE – High density polyethylene MDPE – Medium density polyethylene PE100 – PE100 PVC – Polyvinylchloride RC – Reinforced concrete RC-CIP – Reinforced concrete with cured in place pipe liner RC-PL – Reinforced concrete plastic lined RCRRJ – Reinforced concrete rubber ringed joint S – Steel SEL – Steel epoxy lined SRCRRJ – RCRRJ with 5% Micropoz 12mm sacrificial liner UNKN – Unknown Trunk Codes & Descriptions COLL – College trunk A large gravity fed sewer pipe that collects wastewater from the corner of College St and carries it to the STP trunk main. DIAG – Diagonal trunk A large gravity fed sewer pipe that collects wastewater from the corner of Botanical and Chelwood and carries it to the STP trunk main. EAST – Eastern trunk A large gravity fed sewer pipe that collects wastewater from Fitzherbert Bridge and carries it to the STP trunk main. FEAT – Featherston trunk A large gravity fed sewer pipe that collects wastewater from Featherston St and carries it to the College trunk main. FERG – Ferguson trunk A large gravity fed sewer pipe that collects wastewater from Ferguson St and carries it to the Featherston trunk main. MAIN – Ashhurst trunk main A large gravity fed sewer pipe that collects wastewater from Ashhurst and carries it to the Ashhurst oxidation/flow buffer pond. MAXW – Maxwell/Western trunk A large gravity fed sewer pipe that collects wastewater from Maxwells Line and carries it toward the treatment plant. NONT – Non-trunk A gravity fed sewer pipe that carries wastewater from suburbs to the trunk mains. RISE – Rising main A pressurised sewer pipe that carries wastewater from low lying areas up to the gravity fed network. TREM – Tremaine trunk A large gravity fed sewer pipe that collects wastewater from Tremaine Ave and carries it toward the Featherston trunk main. TRNK – STP trunk A large gravity fed sewer pipe that collects wastewater from various trunk mains and carries it toward the treatment plant. WEST – Western trunk A large gravity fed sewer pipe that collects wastewater from north of the train tracks and carries it toward the Maxwells Line pump station. Notes: The "Updated" date you see on this item indicates when the metadata was last revised. It doesn’t necessarily reflect when the data inside the feature layer was last refreshed. The data available for download on Palmy GeoHUB is updated daily, this results in a difference between what’s currently visible online and PNCC’s databases.

污水干管是指将郊区与城区产生的污水输送至城市污水处理厂的大型地下管道。此类干管构成重力自流与泵提升污水管网的核心，对安全高效输送污水至关重要。本地理信息图层涵盖单根污水干管的详细信息，包括管道管径、长度、材质、高程以及干管接驳情况。本数据集将持续接收新信息并更新。本数据集采用的垂直基准为NZVD 2016。

数据集字段（列）：
Compkey：唯一自动生成的管道资产标识符。
UnitID：管道起点（上游端）的单元编号。
UnitID2：管道终点（下游端）的单元编号。
Diameter：管道内径，单位为毫米。
Length：管道长度，单位为米。
UpperIL：重力自流干管上游端的管内底高程。
LowerIL：重力自流干管下游端的管内底高程。
Material：表示管道材质的代码（详见材质代码列表）。
Trunk：基于管道在污水管网中的功能进行的分类（详见干管分类列表）。

材质代码及说明：
AC – 石棉水泥管
CI – 铸铁管
CLS – 衬混凝土钢管
DS – 韧性钢管
GEW – 釉面陶管
GEWCIP – GEW原位固化管
GEW-PL – GEW塑料衬里管
HDPE – 高密度聚乙烯（High Density Polyethylene）
MDPE – 中密度聚乙烯（Medium Density Polyethylene）
PE100 – PE100级聚乙烯
PVC – 聚氯乙烯（Polyvinyl Chloride）
RC – 钢筋混凝土管
RC-CIP – 带原位固化管衬里的钢筋混凝土管
RC-PL – 塑料衬里钢筋混凝土管
RCRRJ – 橡胶圈接口钢筋混凝土管
S – 钢管
SEL – 环氧涂料衬里钢管
SRCRRJ – 带5% Micropoz 12mm牺牲衬层的RCRRJ管
UNKN – 未知材质

干管分类代码及说明：
COLL – 学院干管：大型重力自流污水管道，收集学院街路口的污水并输送至STP干管主干线。
DIAG – 对角线干管：大型重力自流污水管道，收集植物园路与切伍德路路口的污水并输送至STP干管主干线。
EAST – 东部干管：大型重力自流污水管道，收集菲茨赫伯特桥区域的污水并输送至STP干管主干线。
FEAT – 费瑟斯顿干管：大型重力自流污水管道，收集费瑟斯顿街的污水并输送至学院干管。
FERG – 弗格森干管：大型重力自流污水管道，收集弗格森街的污水并输送至费瑟斯顿干管。
MAIN – 阿什赫斯特干管主干线：大型重力自流污水管道，收集阿什赫斯特区域的污水并输送至阿什赫斯特氧化/流量缓冲池。
MAXW – 麦克斯韦/西部干管：大型重力自流污水管道，收集麦克斯韦路沿线的污水并向污水处理厂输送。
NONT – 非干管：将郊区污水输送至干管的重力自流污水管道。
RISE – 提升干管：加压污水管道，将低洼区域的污水提升至重力自流管网。
TREM – 特雷梅恩干管：大型重力自流污水管道，收集特雷梅恩大道的污水并向费瑟斯顿干管输送。
TRNK – STP干管：大型重力自流污水管道，收集各干管的污水并向污水处理厂输送。
WEST – 西部干管：大型重力自流污水管道，收集铁路以北区域的污水并向麦克斯韦路泵站输送。

备注：本条目显示的「更新日期」仅表示元数据的最后修订时间，未必反映要素图层内数据的最后刷新时间。Palmy GeoHUB平台可下载的数据每日更新，这会导致当前在线显示内容与PNCC的数据库存在差异。