14-storey residential house - VK

Contents

1. General Data

2. Internal water supply

2.1 Characteristics of the internal water supply system

2.2 Calculation of internal water supply

2.3 Determination of the required head in the internal water supply network

3. Sewerage

3.1 Characteristics of internal sewage system

3.2 Calculation of internal sewage system

4. List of used literature

1. General Data

The basis for the design of internal water supply and sewerage is a task for course design (gravity sewerage and only cold water supply are designed, conditionally considering that hot water supply pipelines are accepted of similar sizes and are located in the building parallel to cold water supply pipelines).

Source Data:

The purpose of the building is residential.

The number of buildings is one.

Number of floors of the building, n = 14 floors.

Floor height, het = 3 m 20 cm

The thickness of the floor is 300 mm.

Freezing depth - 90 cm.

The number of inhabitants per 1 apartment is 4.3 people.

The number of sections is 2.

The distance from the floor elevation of the 1st floor to the ground is 80 cm.

The distance to the red building line is 30 m.

Basement height - 2 m

Guaranteed head Ngar = 25 m.

The diameter of the city sewerage pipeline is 400 mm.

The diameter of the city water pipeline is 200 mm.

The elevation of the city sewerage pipeline tray below the floor elevation of the first floor is 6.5 m.

2. Internal water supply

2.1 Characteristics of the internal water supply system

The cold water internal water supply system is accepted as dead end with lower wiring and with one input (SNiP, 2.04.0185, item 9.1).

Connection of the internal water supply of the residential building to the city water supply is carried out through a booster pump unit. Check valves, gate valves and pressure gauges are installed on the pressure lines of each pump, and gate valves are installed on the suction lines. In order to prevent the propagation of vibration and noise from the operating pumping unit through elastic metal pipelines, pump units are connected to the main pipelines using flexible inserts.

Water supply and drinking water supply is introduced through the end of the building at an angle of 900 with a gap of 0.2 m between the pipeline and construction structures with sealing of the hole between the wall and the pipeline with waterproof elastic materials. At a distance of not more than 1 m from the outer wall, a water metering unit is installed with a device of a bypass line and a check valve is installed before and after the water meter, as well as between the water meter and the second gate valve. Then the pipeline is brought under the basement ceiling to ensure more convenient and complete use of the basement space.

Laying of main extension pipelines, which combine all the risers in the basement, is carried out openly, along the internal capital walls 50 cm below the basement ceiling, and branches to the risers are placed at right angles and arranged with shut-off valves. Pipes are attached on brackets or hooks. Main pipelines are laid with a slope of 0.003 towards the inlet to carry out water descent from the building water supply system. They are connected to a 25 mm diameter watering crane, which is located on the outside of the building in a niche at a height of 35 cm from the pavement. On the inner side, a shut-off valve and a water plug are installed before turning off the watering crane for the winter.

The main pipeline is connected to the water metering unit and the inlet to the building.

Water risers are placed in niches. On each floor, dilution pipelines are installed, laid along the enclosing structures at a height of 0.91.1 m above the floor with a slope to the risers of at least 0.002. Dilution pipelines are arranged with shut-off, water and mixing valves and installation at the inlet from the riser of the water meter.

The pipeline from the city water pipeline to the water metering unit is laid from steel pipes with corrosion-resistant insulation. The internal water supply of the building is made of steel plumbing galvanized light pipes with a diameter of 15, 25, 32, and 50 mm. Welding of steel water pipes. Metal-plastic pipes are used for wiring inside apartments. All reinforcement is brass, and seals are rubber.

3. Sewerage.

3.1 Characteristics of internal sewage system

The internal sewerage system of the building includes the following elements: sewage receptacles, hydraulic closures and an internal sewage network, mounted from shaped funnel connectors and pipes.

Sanitary devices are connected using hydraulic gates (siphon). Drain sewage pipes shall be laid to risers above the floor. Sewage risers are placed in mounting shafts on the same axis with toilet bowl. All risers have an exhaust part rising 0.3 m above the roof. Revisions from the 1st to the 14th floors are installed on the risers every two floors. Cleaners are installed in the basement for each riser. Through the outlets laid under the floor of the basement in the ground perpendicular to the walls of the building, the internal sewage system is connected to the yard sewage system. The network is traced along the building at a distance of 5 m. To monitor the operation of the sewage network, three inspection wells are provided at the points of connection of the outlets from the building, one rotary well and one control inspection well before connecting to the external network at a distance of 1.5 m from the red line for the differential device .

The longitudinal profile of the yard sewage network is drawn along the axis of the pipe route from the point of connection to the city sewage network to the most remote sewage outlet (K-1). The well of the palace network of this issue determines the smallest deepening of the network. The profile is drawn according to the movement of water through the pipes (from left to right). According to the general plan, absolute values ​ ​ of ground heights along the route are determined. According to the data of the axonometric diagram of the sewage riser and exhaust, the elevation of the pipe tray in the well is determined taking into account the difference in diameters of the exhaust pipelines and the yard network when connecting the pipelines along the silks. Elevations of all other structures to the control structure were found by subtracting from the elevation of the previous structure the value of height loss hi, m:

hi = i l, where

i - slope of sewage pipelines;

l - distance between wells, m.

From the initial data, the elevation of the pipe tray at the point of connection of the yard sewer to the city is determined, the second elevation of the yard sewer pipe is calculated and losses are calculated, which are added to the calculated elevation and the second elevation of the pipe in the control well is obtained. The depth of the structures is calculated from the difference between ground elevations and pipe trays.

The material for internal sewerage is polypropylene pipelines with diameters of 100 mm (from toilet bowls) and 50 mm (from all other plumbing appliances) with slopes in horizontal sections of 0.02 and 0.025, respectively, and for yard sewage - 150 mm ceramic pipelines with a slope of 0.01.