Sanitary and technical equipment of a residential building

Contents

TABLE OF CONTENTS

INTRODUCTION

I INTERNAL WATER SYSTEM DESIGN AND CALCULATION

1.1 Design of internal water supply network of the building

1.2 Hydraulic calculation of water supply network

1.3 Selection of water metering device

1.4 Determination of required head for building water supply

II INTERNAL SEWER SYSTEM DESIGN AND CALCULATION

2.1 Construction of internal and yard sewage network

2.2 Determination of estimated wastewater flow rates

2.3 Hydraulic calculation of yard sewage system

III HOT WATER SYSTEM DESIGN AND CALCULATION

3.1 Design of internal hot water supply network of the building

3.2 Hydraulic calculation of hot water supply network

3.3 Selection of water metering device

CONCLUSION

BIBLIOGRAPHIC LIST

Introduction

In the course project, it is necessary to design a complex of sanitary equipment for a five-story residential two-way building for 120 residents.

The following shall be designed in the building:

- Internal water supply network

- hot water supply network

- sewage network

To design cold and hot water supply systems, it is necessary to build axonometric diagrams of systems, perform hydraulic calculation of networks, select water metering devices and determine the required head for water supply of the building.

The calculation of the sewage system includes the determination of waste water flow rates, hydraulic calculation of the yard sewage network and the construction of an axonometric diagram of the sewage system.

I design and calculation of internal water supply systems of the building

1.1 Design of internal water supply network of the building

The city water supply is laid along the end of the building at a distance of 7 m. The water supply is laid below the depth of ground freezing at a depth of 1.1m. 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 the water metering unit in an isolated heated room at the entrance to the building .

Main pipelines connecting the riser bases are laid in the basement room along the inner walls using hook fasteners. Piping installation is carried out at a distance of 30 cm from the basement ceiling. At each branch and at the risers, we provide for the installation of valves for the possibility of disconnecting the risers during accidents and repairs. In order to carry out the system emptying on the main pipelines, we provide a slope of 0.002 towards the inlet, as well as provide for the installation of a tee with a plug in the lower part of each riser. Water-supply risers are placed in the places of the largest water intake and are combined with sewage and hot water supply risers, which makes it possible to use common holes in floors for them.

Supply water supply lines from the risers to the instruments are laid at the shortest distance with a slope of 0.002 towards the riser .

Water discharge cranes of shells and washbasins are located at a height of 1.1m from the floor, shower nets - 2.2m, ball cranes of flush barrels - 0.8m.

Ii design and calculation of the internal sewerage system of the building

2.1 Construction of internal and yard sewage network

Internal sewage networks are designed in accordance with the instructions of paragraphs 17.1 - 17.23 [1].

Drain sewage pipes from 50 mm diameter devices (washbasin, washes, baths) are laid along the floor along the walls and partitions. The diameter of the outlet from the toilet is taken equal to 100mm.

Sewage risers are placed on walls in the corners of toilets. The diameter of the riser connected to the toilet is taken to be 100mm, in other cases 50mm. Each riser is brought out of the roof to a height of 0.5 m. We end with a trim without a weather vane.

The risers are connected in the basement and only in vertical planes. To ensure reliable operation of the network, we provide for the installation of revisions through one floor.

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. The yard sewage route with a diameter of 500mm is laid parallel to the building at a distance of 9ti meters.

Yard sewerage starts from the first (downstream) well, depth of laying, which we accept 1.5 m.

At a distance of 1.5 m from the red building line to the connection of the network to the city sewage system, we arrange a control well. Due to the fact that the city sewerage runs at a greater depth than the courtyard, in the control wells we arrange swings to ensure a smooth injection of sewage into the well on the city sewerage, The difference is 1.105m.

2.2 Determination of estimated wastewater flow rates

After determining the number of sewage outlets from the building and combining the risers into each of the outlets in the basement of the building. On the plot plan of the section, we design a yard sewage route with inspection and control wells and indicate the numbers of the calculation sections.

Calculations are made in the sequence given in Table 2.

- in column 1 we record the numbers of design sections, starting from the 1st inspection well (KK1) to the well on the inspection manifold (GC).

- in column 2 we determine the number of instruments (T) directing waste water from all floors to the designed outlets and further to the design areas.

- in column 3 we determine the number of residents (U) using devices on all floors, taking into account the number of apartments, the risers from which are combined into the corresponding issue.

- in columns 4 and 5 we record, respectively standard water flow rate q0tot - maximum second flow rate from devices with the highest water consumption, l/s qhr u tot - total water flow rate of the device per hour of the highest water consumption, l/s/

Further, the sequence of calculations given in columns 610 of Table 2 is similar to the calculations made in columns 610 of Table 1.

The value of qtot, l/s is taken as calculated if it exceeds or equals the value of 8 l/s. If it is less than 8 l/s, then to the obtained qtot values ​ ​ in each section we add the largest second flow rate from the device with the highest drainage (toilet) equal to q0 s = 1.6 l/s.

Iii design and calculation of the building hot water supply system

3.1 Design of internal hot water supply network

The main heating line is laid in channels along the end of the building at a distance of 7 m. Therefore, hot water pipelines are designed from the end of the building. Input depth is 1,0 m. 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 with a bypass line in an isolated heated basement at the entrance to the building.

Main pipelines connecting the riser bases are laid in the basement room along the inner walls with change of hook fasteners. Piping installation is carried out at a distance of 300 m 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, we provide a slope of 0.003 towards the inlet, as well as provide for the installation of a tee with a plug in the lower part of each riser .

We place water risers in the places of the largest water intake and combine them with sewage and water risers, which makes it possible to use common holes in floors for them.

Supply lines of water supply from risers to instruments are laid at the shortest distance.

Water discharge cranes of shells and washbasins are located at a height of 1.1m from the floor; shower nets - 2.2m.

Conclusion

In the course project, a complex of engineering equipment of a five-story residential building is designed, consisting of hot and cold water supply networks and a sewer network .

As a result of the calculation of the cold water supply system, an internal water supply system made of steel water and gas pipes with a diameter of 15 to 40 mm was designed. The water supply is designed from the end 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. The water metering unit is located in an isolated basement room, in which a water meter with a bypass line with a diameter of 40 mm is installed. Based on the calculated head losses in the network, the required head in the city water supply network for the water supply of the building was determined.