下水道的需求

If there will be a plumbing fixture(s) in the basement, which is liable to back-up from a sewer line, 需要安装回水阀. Regulations and guidelines for the installation of backwater valves for homes and businesses in low-lying areas of Boston can be found in the BWSC Regulations.

回水阀手册

B-14回水阀标准详细信息

The plumbing of each building must have a separate independent sewer connection(s) to BWSC sanitary/combined sewer system outside of the building.

When there is a separate sanitary sewer in the street, the site's sewer lateral must be connected to the sanitary sewer. When there is a combined sewer in the street, the site's sewer infrastructure must leave the property in a separate pipe from the storm drain system and then connect to the combined sewer via a wye connection once in the public right of way. 不允许连接到人孔.

连接细节, if it is not being made to an existing wye branch on the sewer, 必须在计划上显示吗. 与粘土的连接, 聚氯乙烯, 混凝土, 铁, or brick pipes will be made using an approved coring bit and mechanical device.

B-12连接标准详细信息

Minimum pitch is 1/4 inch per foot for building sewer connections. Building connections shall be bedded in 3/4 inch minimum crushed stone to at least half the pipe diameter.

When sewer connections are being made to existing wye branches, the distance from a manhole must correspond to the distances shown on BWSC record plan. All existing wyes accessible from the site must be shown, to allow for field changes. New wye branches must connect to the main and not the sewer manholes.

Provide a clean out on the portion of the building sewer on the owner's property at the property line when there is a building set back from the property line.

All chimney connections shall be encased in 混凝土.

B-15 烟囱连接 Standard Detail

Grease traps or interceptors shall be required on sewer lines for all restaurants and commercial food handling establishments.  BWSC may require grease interceptors for any fixture or drain which introduces large amounts of animal or vegetable fat, 油或油脂. All submissions shall be sent to Enforcement for review and approval.

商用厨房隔油池

油气分离器 are required for indoor parking garages for six or more vehicles and indoor parking garages that will be used for automotive purposes other than just storage (i.e.、洗涤、保养等.)，以及加油站. Sewer separators must discharge to the sewer/combined system.

G-01油气分离器标准详细说明

The sanitary sewer connections shall be laid at least 10 feet apart from any new or existing water services connections.

All abandonment of the existing building sanitary sewer services must be cut and capped off at the main(s) in the street. All such work must be performed by a Licensed Contractor.

All new sewer connections and manholes must be stationed. 在可能的情况下, STA 0+00 should be aligned with the corner of the property lines of the building being constructed.

BWSC has the right to inspect building sanitary sewers, 建筑雨水渠, 以及其他私人下水道, 集油器, oil-particle分隔符, and other appurtenances tributary to the BWSC's wastewater and storm drainage systems. 检查 points must be delineated on the site plan, along with sign off by a BWSC inspector.

在任何现有建筑物内, 空缺一年以上, to be renovated or substantially rehabilitated, it is required that if the sewer lateral is going to be reused, 必须在电视上播出. BWSC will determine if the existing lateral can be reused after review of the video provided by the proponent. A new roof drain must be provided if there is no existing drain in the building.

适用于所有新建的建筑物, the engineer must address the issue of the foundation drain and under drain.

Proposed catch basins and area drains require a "Do Not Dump" plaque that will be purchased from BWSC at the time of the General Service Application.