Course project "Engineering networks and water supply"

Contents

CONTENTS

INTRODUCTION

1. TASK FOR RMG EXECUTION

2. COLD WATER SYSTEM DESIGN AND CALCULATION

SUPPLY

2.1. Design of internal water supply of the building

2.2 Construction of the axonometric diagram of the water supply network of the building

2.3 Hydraulic Calculation of Water Supply Network

2.4 Selection of pump equipment

2.5 Selection of water metering device and determination of head losses

in it

2.6 Determination of required head for building water supply

3. INTERNAL AND YARD DESIGN AND CALCULATION

NALIZATION

3.1 Internal and yard sewage system design

3.2 Determination of estimated wastewater flow rates

3.3 Hydraulic calculation of yard sewage system

3.4 Construction of longitudinal profile of yard sewage network

Literature

ATTACHMENTS:

№1. Sheet A1 Drawing. Building typical floor plan, basement plan

buildings. Axonometric diagram of water supply and sewerage networks. Master Plan. Longitudinal profile of yard network

Introduction

RGR is designed to show theoretical knowledge in the discipline "Engineering networks and equipment," water supply and sewerage systems, as well as to consolidate the knowledge gained in the practical work on the design of the water supply and sewerage system of the residential building where the student lives. The calculation is based on the data given in the individual task.

During the control work, the dead-end internal water supply system with the lower routing of the main pipelines was designed and calculated (in the diagram of the internal cold water supply, the required head was determined to supply water to the water separation point farthest from the external network, the diameters of the dilution pipelines, risers were selected, the pump and water meter were selected).

The sewerage system was calculated (internal and yard sewerage system and diagram, a profile was built indicating diameters, lengths, slopes, absolute elevations and deepening of pipes).

The taken structural decisions on the design of the water supply and drainage system comply with the requirements of TKP 454.01-52-2007 Internal water supply systems of buildings and TKP 454.01-54-2007 Internal sewerage systems of buildings .

The control work took into account the following:

- the layout of the floors of the building of the same type;

- the technical floor is located under the entire building;

- water supply of the building is carried out from the city water supply system or its own water intake;

- guarantee head is set from the ground level at the point of connection of the inlet to the street water supply network;

- waste water removal from the residential building is designed into the city sewerage network.

Task to perform control work

Number of floors of typical section - 10

Floor height 2.8 m

Floor thickness 0.16 m

Basement floor elevation 2.500 m

Ground floor elevation 0.000 m

Ground freezing depth 0.7 m

Lowest warranty head 31 m

Ground elevation 1,100 m

Design and calculation of internal water supply systems of the building

2. 1 Design of internal water supply system of the building

The design of internal water supply systems in buildings of various purposes is carried out in accordance with the requirements of TKP 454.01-52-2007 Internal water supply systems of buildings and TKP 454.01-54-2007 Internal sewerage systems of buildings.

Cold water supply system (internal water supply) includes the following elements:

1.vvod;

2. water metering unit ;

3. breeding network;

4. distribution pipelines (risers);

5. supply to water collecting devices (sanitary devices);

6. Fittings.

The tap water into the building from the city water supply is designed from the end of the building at a distance of 8.5 m. The water pipeline inlet is laid below the ground freezing depth at a depth of 1.2m. Bushings are connected to the external network at right angle and perpendicular to the foundation of the building. When passing under the wall, the inlet is laid in a case from a steel pipe with subsequent sealing with a resin strand and mint clay, and outside with cement mortar. We install a water metering unit in an isolated basement at the entrance to the building and in the apartment. Dilution networks of the internal water supply system connecting the bases of the risers are laid in the basement along the internal walls and beams using hook mounts. Piping installation is carried out at a distance of 50 cm from the basement ceiling. At each branch to the risers, we provide for the installation of a valve for the possibility of disconnecting the risers during accidents and repairs. In order to carry out the system emptying on the main pipelines, a slope of at least 0.003 towards the water is provided.

We place water risers in the places of the largest water intake and combine them with sewage, which makes it possible to use common holes for them in the floors. We lay water supply lines from risers to instruments at the shortest distance. Access to instruments is laid above the floor at a height of 15 cm with vertical lifting of pipes to each water separation point. Cold water networks are designed from steel pipes as per GOST 1070491. The rules for laying the water supply network are set out in TKP 454.01-52-2007.

2.2 Construction of the axonometric diagram of the water supply network

The layout of the axonometric diagram is necessary for the hydraulic calculation of the water supply network of the building. At the same time as drawing the axonometric diagram, we place the numbers of the calculated sections, starting from the most remote and highly located (on the dictating riser) and ending with the place of connection to the water metering unit. Sink is used as dictating water discharge device. The numbers of the design points determine the design areas where the water flow rate does not change. On the axonometric diagram, we place absolute elevations of the ground surface near the building, the floor of the basement and the 1st floor, the input axes and the water metering unit.

Design and calculation of internal and yard sewers

3.1 Internal and yard sewage system design

Drain sewage pipes from instruments (washbasins, washes, baths) with a diameter of 50 mm are laid along the floor along the walls and partitions. The diameter of the branch from the toilet is assumed to be 100 mm. We place sewer risers in the corner of the toilet or in the kitchen near the wash. If a toilet is attached to the riser, then its diameter is assumed to be 100 mm, in other cases - 50 mm. Each riser is brought outside the roof to a height of 50 cm for a non-operational roof and ends with a cut without a vane. The risers are connected in the basement and only in vertical planes. To ensure reliable operation of the network, we provide for audits and cleaning. We install revisions on sewer risers through 1-2 floors, and necessarily on the first and last floors.

Releases with a diameter of 100 mm are directed outside the walls of the courtyard facades (not to the main facade) into inspection wells.

Waste water is discharged from the building through sewage outlets to the inspection wells of the palace sewerage system and further to the city sewerage network.

Due to the fact that the city sewerage runs at a greater depth than the courtyard, in the control well we arrange swings to ensure a smooth injection of sewage into the well on the city sewerage. The depth of the outlets is 0.7 m from the top of the pipeline to avoid mechanical damage. Drain sewage pipes from instruments are accepted from polypropylene pipes. The risers of the internal sewer network, the outlets, the yard sewer network are designed from cast iron sewer pipes as per GOST 694298.

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