塑料排水检查井
Plastic drainage inspection well
以高分子树脂为主要基料，采用挤出、注塑、缠绕、焊制或其它成型工艺制成的检查井的统称。
A general term for inspection wells made of polymer resin as the main base material by extrusion, injection, winding, welding or other molding processes.
连接管件
Connecting pipe fittings
用于检查井与排水管道之间的连接：一端与检查井连接，另一端与排水管道连接的塑料短管。
For the connection between inspection well and drainage pipe: one end is connected with inspection well and the other end is connected with drainage pipe.
直壁式塑料排水检查井
Straight wall plastic drainage inspection well
检查井井筒呈直立状。一般在上下游管道内径小于井筒内径时使用。
The inspection shaft is vertical. Generally, it is used when the inner diameter of upstream and downstream pipelines is smaller than that of wellbore.
管件式塑料排水检查井
Pipe fitting type plastic drainage inspection well
检查井井筒呈三通管件状。一般在上下游管道内径大于或等于井筒内径时使用。
The inspection shaft is in the shape of tee pipe. Generally, it is used when the inner diameter of the upstream and downstream pipelines is greater than or equal to the inner diameter of the wellbore.
塑料排水检查井的总高按下式计算：
The total height of plastic drainage inspection well is calculated according to the following formula:
H = H1 - H2 - H3 - H4。
H = h1-h2-h3-h4.
式中：H---井高总尺寸；
Where: H is the overall dimension of well height;
H1---路面与井底高程差；
H1 - elevation difference between pavement and bottom of well;
H2---承压盖板及井盖高度；
H2 - height of pressure bearing cover plate and well cover;
H3---预留间隙（≥100mm）；
H3 --- reserved clearance (≥ 100mm);
H4---其它设计预留尺寸。
H4 --- other design reserved dimensions.