Drawings and DBE of 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

3-6. Longitudinal profile of yard sewage network

4. Bibliographic list

Selects the plumbing system and scheme.

In this course work, only the cold drinking 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 30 m from the CTP, at an angle of 900 to the wall, with a slope of i = 0.005 to the city water supply. The inlet is mounted from a 50 mm diameter steel pipe with corrosion-resistant insulation applied to it (GOST 326275).

The horizontal distance in the light between the water supply inputs and the sewage outlets is 6.9 m with a diameter of 50 mm.

The water metering unit is located at a distance of 1.0 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.

Hydraulic calculation of internal water supply.

The calculation of the internal water supply network and the selection of pumps was carried out to pass the maximum second flow rate.

Sewerage.

Internal sewer.

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

Sewage receivers.

Sanitary devices are connected to the drain pipeline by means of hydraulic gates (siphons). Drain sewage pipes are laid to risers above the floor. The diameter of the branch pipelines is assigned depending on the diameter of the largest outlet of the connected devices. The diameter of the toilet outlet is 100 mm slope i = 0.02, for all other devices - 50 mm slope i = 0.025.

Sewer risers.

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

Sewer release.

All waste water is removed from the building through 4 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 wall to the axis of the inspection well does not exceed 3.0 m. The diameter of the outlets is 100 mm. Issues are directed towards the main facade.

Calculation of sewage pipelines.

Internal sewage pipelines are calculated to pass the maximum second flow rate of wastewater qs, l/s, which at the total maximum second flow rate qtot = 2.73 l/s in cold and hot water supply networks serving a group of devices is determined by the formula:

qs= qtot+ q0s=2,69+1,6=4,29 л/с

q0s is the highest standard wastewater flow rate from the receiver with maximum drainage, for residential buildings the flow rate from the toilet flush tank is 1.6 l/s.

Calculation of sewage pipelines shall be performed in such a way that the condition is met:

Therefore, we accept liquid velocity Vc = 0.87 m/s, pipeline filling H/d = 0.6 and select the slope of sewage gravity pipes i = 0.01:

Yard sewer.

The network is laid at a distance of 3 m from the walls of the building. The diameter of the yard sewage pipes is 150 mm. At a distance of 1 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 65.3 m, the slope is 0.01.

viv.DWG