Composition of the course project on the topic "Internal water supply and sewerage of a residential building"

Contents

1. General part

1-1. Source Data

1-2. Project Composition

2. Water supply

2-1. Selecting a Water Supply System and Scheme

2-2. Water supply and water metering unit

2-3. Hydraulic calculation of internal water supply

3. Sewerage

3-1. Internal sewer

3-2. Waste Water Receivers

3-3. Sewage risers

3-4. Sewage outlet

3-5. Yard sewage system

4. Specification

5. Bibliographic list

Source Data

Distance to red line a, m 6

Pipeline diameter HC dc, mm 300

Pipeline diameter of GV dv, mm 250

Guarantee head in Ngar city water supply, m 24

Number of floors 8

Water consumption rate per 1 resident (total) qutot, l/day 190

HC pipeline tray elevation below ground floor elevation by 4.5

Ground freezing depth, m 1.9

Floor height het, m 3.0

Project Composition

- standard floor plan (M1: 100) with application of all elements of sanitary systems;

- plan of the basement (M1: 100) with the indication of all elements of pipelines and the sanitary equipment of a zero cycle;

- general plan of the site with external networks of plumbing and sanitary with wells and CTP (M1: 500);

- axonometric diagram of the water supply network (M1: 100);

- axonometric diagram of sewage riser (M1: 100);

- longitudinal profile of the yard sewerage network (Mgor1: 500, Mvert1: 100).

Water supply.

Selects the plumbing system and scheme.

In this work, only the cold domestic water supply system is designed in residential buildings, the hot water supply system is not considered.

The internal water supply system includes inlets to the building, water metering units, separation networks, supply to sanitary devices, pumping units, water separation, mixing, shutoff and control valves.

The choice of the internal water supply system was made taking into account technical economic, sanitary and hygienic and fire safety requirements, as well as the adopted external water supply system.

Since the building with a storey of less than 12 floors was considered, according to the SNiP recommendations, a dead end network scheme with the lower wiring of an internal cold water pipeline with one inlet was adopted.

Water-supply risers are placed together with sewage risers in mines when using factory-made sanitary and technical cabins.

Water supply and water metering unit.

Water supply pipes are laid at a distance of l = 6.5 m from the CTP at an angle of 900 to the wall with a slope of i = 0.003 to the city water supply. The inlet is installed from cast-iron ras-pipe of 65 mm diameter (GOST 2105375).

The horizontal distance in the light between the water supply inputs and the sewage outlets is 3.5 m with a diameter of 40 mm. When crossing a water pipeline with a sewer, the vertical distance in the light was 0.6 m.

The water metering unit is located at a distance of 0.4 m from the wall of pipe entry into the building .

The main pipelines are laid along the capital walls with a slope towards the inlet. They are connected to watering cranes, which were not taken into account by the water supply.

Sewerage.

Internal sewer

In this course work, the internal sewage system includes an axonometric diagram of the internal sewage system, which consists of sewage receivers, sewage drains and outlets.

Waste Water Receivers

Sanitary devices are connected by means of hydraulic gates. Drain sewage pipes are laid to risers above the floor. The diameter of the discharge pipelines is assigned depending on the diameter of the largest outlet of the connected ports. The diameter of the toilet outlet is 100 mm, for all other devices - 50 mm. Slope i = 0.02.

Sewage risers

The building contains 6 sewage risers. Sewage risers are located near receivers of sanitary devices. The diameter of the sewer riser is 100 mm.

Sewage outlet

All waste water from the building is introduced through 2 outlets. At the point of connection of the issues to the yard network, an observation well is installed. The length of each of the outlets from the riser to the axis of the inspection well does not exceed 3.0 m. The diameter of the outlets is 100 mm.

Yard sewage system

The network is laid at a distance of 12 m from the walls of the building in the direction coinciding with the slope of the terrain. The diameter of the yard sewage pipes is 100 mm. At a distance of 1.5 m from the city sewerage pipeline there is a control inspection well. In the project along the axis of the yard sewerage network, a longitudinal profile is drawn from the point of connection to the city sewerage network to the outlet farthest from it. The length of the yard sewage network is 54 m, the slope is 0.02.

Depth of sewage network.

The depth of the sewage network depends significantly on the cost and timing of construction, so it should be assigned as minimum as possible, taking into account the following conditions:

- protection of waste water from freezing;

- possibility of connection to the street network of internal sewerage devices of the building;

- protection of the pipe from mechanical damage

Nc = Np - L = 1.9 - 0.3 = 1.6 m

Np - freezing depth

L is 0.3 m for pipes up to 500 mm in diameter and for pipes of larger diameter.