5-storey, 20-apartment residential building

Contents

Contents

I. GENERAL PART

1. Source Data

2. Characteristics of accepted sanitary equipment

II. INTERNAL WATER SUPPLY

1. Justification of water supply system selection

2. Input Device and Design

3. Internal water supply network design and arrangement

4. Hydraulic calculation of internal water supply network

III. INTERNAL SEWERAGE

1. Main elements of internal sewage system

2. Waste water discharge pipes

3. Number of risers and their location

4. Cleanup and revision locations

5. Sewage releases from the building

IV. YARD SEWERAGE

1. Manholes and their purpose

2. Hydraulic calculation of the yard network

List of literature used:

2. Input Device and Design

The inlet is laid in the foundation opening. For this purpose at arrangement of zero cycle of construction works steel branch pipe (sleeve) of larger diameter is installed into foundation, than inlet (with clearance of 0.2 m), through which further inlet pipe is laid. The space between the inlet and the branch pipe is sealed with a resin strand, mint clay and cement mortar with a layer of 2-3 cm.

1 input is designed in the building. Its length is defined as the distance from the city water supply network to the place of installation of the water metering link:

, where

The water metering unit is located in the building, at a distance of 1.5 m from the outer wall 0.5 m thick, with a rise of 1.2 m. It is designed at a distance of 0.5 m from the floor.

The input slope is taken 0.005 towards the city network.

The depth of the inlet (to the bottom of the pipe) is determined by the formula:

, where

NPROM - ground freezing depth.

Steel pipes with anti-corrosion coating are accepted for the input device. The input is connected to the existing outdoor conduit network using a saddle.

3. Internal water supply network design and arrangement

With the lower routing of the main line, it is located under the ceiling of the basement at a distance of 0.5 m from it, with a slope of 0.005 to the water metering unit. The main line of the water pipeline is arranged so that the lengths of supply to the risers are the smallest. Water supply risers are located in plumbing cabins and kitchens (closed): the entire building has 4 risers.

The internal water supply network is designed from steel water and gas galvanized pipes, connected either by thread or by welding.

In order to prevent freezing of the pipeline, thermal insulation is provided, when passing through the walls, with rubber cases, felt, and other insulating materials. To reduce noise from pipelines, the use of rubber sockets for water discharge cranes and the absence of steep turns and sharp transitions when laying the main is designed as sound insulation.

The type of shut-off valves and its installation places are provided in conjunction with SNiP 2.040185: at each inlet, at the base of the risers, at the from-branches to each apartment, in front of the float valves at the drain tanks, in the water metering unit.

To irrigate the area adjacent to the building, 1 irrigation crane is provided on one side of the facade of the building, which is located at a distance of 0.35 m from ground level.

Iii. internal sewage system

1. Main elements of internal sewage system

The main elements are: sewage receivers, discharge pipes, risers, revisions, cleaning, siphons, main pipes, outlets.

Sanitary devices connected to the domestic sewage system are equipped with hydraulic gates (siphons) located on the branches under the devices.

All toilets are equipped with individual flush tanks or flush cranes.

2. Waste water discharge pipes

Drain pipes from bath sewage receivers, washbasins, toilets and washes shall be laid above the floor (0.1 m) and connected to risers. The diameters of the branch pipes from the baths, washbasins and washes are designed with a diameter Ø 50 mm with a slope to the riser 0.035, the diameters of the branch pipes from the toilets are accepted Ø 100 mm with a slope 0.02.

Waste water removal from sanitary devices is performed via closed gravity pipelines. The sewer network sections are laid straight. It is not allowed to change the slope of the gasket in the section of the branch channel. The diameters of the discharge pipes are not calculated, but are accepted depending on the flow rate of sewage liquid of sanitary devices.

3. Number of risers and their location

10 sewage risers are designed in the building. Risers are installed in the places where sanitary devices are located and closer to the devices that receive the most contaminated drains (toilets), as well as in kitchens (closed).

Riser diameters are taken structurally along larger diameter of branch line. Along the entire height, sewer risers are made of the same diameter. Connection of sanitary appliances located in different apartments on the same floor to one riser is not allowed.

Ventilation of sewage risers is carried out through the exhaust part of sewage risers, which is withdrawn above the roof of the building to a height of 0.5 m - at a pitched roof. Diameter of exhaust part of sewage riser is equal to diameter of its waste part.

4. Cleanup and revision locations

Clean-up and inspection shall be provided on the domestic domestic sewerage networks. Revisions are installed on risers on the lower and upper floors. To clean the risers, the revision is installed at a height of 1.0 m from the floor.

Cleaning is installed at the turns of the network, at the beginning of the sections, at horizontal sections at a distance of 15 m (at Ø 100 mm), at the exit of the outlet from the building and after the last riser (counting from the wall) is attached to the outlet.

5. Sewage releases from the building

Discharges from the sewage network of the building, transporting waste water to the courtyard network, are laid along the floor of the basement (0.5 m above the floor). To turn the riser to the outlet, a flat elbow or two branches of 135 ° are used. The length of the outlet from the riser or cleaning to the axis of the inspection well is designed not more than 12 mm (with a diameter Ø 100 mm). The diameters of the outlets are assumed to be at least the diameter of the largest of the risers connected to this outlet.

The releases are connected to the external network at an angle of at least 90 °. The exhaust slope should be assumed to be 0.02 at Ø 100 mm. Inspection wells are designed at the points where the outlets are connected to the yard network.

Depth of discharge laying is determined taking into account depth of ground freezing (NPROM):

Iv. yard sewerage

According to the plot plan for the transportation of waste water from the building to the external sewerage network, yard sewage is designed, since there is a red line - the sewage boundary. Yard sewerage is designed from cast iron pipes Ø ≥ 150 mm.

The yard sewer intersects in plan with the city water main at different depths of laying, the laying marks are calculated after hydraulic calculation.

1. Manholes and their purpose

Inspection wells made of prefabricated reinforced concrete elements Ø 1.0 m are arranged on the courtyard network and are located on the connections of you-launches to the courtyard network, on turns. 2 m from the "red" line, a control well (CP) is designed. A section of the yard network from the control well to the well of the external city sewerage network (GKK) is laid perpendicular to the street.

Pipes of different diameters in the wells of the palace network are connected by the "silk-to-silk" method, that is, the upper generatrices coincide with the pipes in the wells.

Since the well of the city sewerage network has a significant depth of laying, and the courtyard network is laid at a minimum depth, the difference should be designed in the QC.

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