SNIP 2.04.01-85 * - Internal water supply and sewerage of buildings

SNIP 2.04.01-85 * - Internal water supply and sewerage

buildings building regulations

DOMESTIC WATER SUPPLY AND SANITATION BUILDING

SNIP 2.04.01-85 *

Moscow 1997

DESIGNED GUI Santehproekt USSR State Committee(YN Sargin) CNIIEP engineering equipment Gosgrazhdanstroya (Candidate of Technical Sciences LA Shopensky..), MNIITEP GlavAPU Moscow City (Candidate of Technical Sciences NN Chistyakov;.. IB Intercession), Donetsk PromstroyNIIproekt GosstroyUSSR (EM Zaytseva) SKTB Rostrubplasta Roskolhozstroyobedineniya (cand. tehn. Sciences AY Dobromyslov), SRI Mosstroy (cand. tehn. Sciences JB Alasgar), NGO "Stroypolimer" (prof. B. C. Romeyko, VA Ustyugov), MGRS (prof. VN Isayev) Mosvodokanalproektom (A. Verbitsky).

INCLUDED GUI Santehproekt USSR State Committee.

prepared for approval Glavtehnormirovaniem USSR State Committee (Ministry of Construction of Russia) - BV Tambovtsev, VA Glukharev.

AGREED USSR Ministry of Health, Ministry of Internal Affairs of the USSR SUPEN.

SNIP 2.04.01-85 * is a reissue of SNIP 2.04.01-85 with change number 1, approved by Decree of the USSR State Construction Committee dated November 28, 1991 № 20, and the change in number 2, approved by Decree of the Ministry of Construction of Russia on July 11, 1996number 18-46.

paragraphs and tables, in which changes are noted in the present building regulations with an asterisk.

should take into account changes adopted building codes and state standards, published in the journal "Bulletin of construction equipment» When using the standard documents and information signs "state standards".

USSR State Committee on affairs construction (Gosstroy USSR)	Building Regulations	SNIP 2.04.01-85 *
Internal water supply and sewerage of buildings	Instead SNIP II-30-76 and SNIP II-34-76

1. GENERAL PROVISIONS

1.1.These standards apply to the design of built and reconstructed systems of domestic hot and cold water, sewer and drains.

1.2.In the design of internal hot and cold water supply, sewerage and drains need to meet the requirements of other regulatory documents approved by the Ministry of Construction or concerted Russia.

1.3.These rules do not apply to the design:

systems, fire main companies producing or storing explosives, flammable and combustible materials, as well as other facilities, the requirements for internal fire water supply are established by appropriate normative documents:

automatic fire-extinguishing systems;

heating units;

hot water treatment plants;

hot water systems supplying water for technological needs of industrial enterprises (including spa treatments) and water supply systems within the process equipment;

systems for special industrial water supply (de-ionized water, deep-freezing, etc..).

1.4.Domestic water supply - a system of pipes and devices, which provides the water supply to the sanitary appliances, fire hydrants and process equipment serving a single building or group of buildings, and having a common water measuring device from the water supply of the village or industrial enterprise.

In the case of water supply from the system to an external fire fighting design of pipelines laid outside buildings, should be performed in accordance with SNIP 2.04.02-84 *.

Internal sewage system - a system of pipelines and devices in the volume bounded by the outer surfaces of enclosing structures and releases to the first manhole providing wastewater disposal of sanitary appliances and technological equipment, and local treatment facilities, if necessary, as well as rainwater and meltwater insewerage network corresponding to the destination of the village or industrial enterprise.

Made State Design Institute of the USSR State Construction Committee Santehproekt

approved decision of the USSR State Committee on affairs building on October 4, 1985 № 169

Term introduction effect July 1, 1986

Notes: 1. Preparation of hot water should be provided at facilities in accordance with the instructions on the design heating units and heating units.

2. Setting the local sewage treatment should be designed in accordance with SNIP 2.04.03-85 and departmental construction norms.

1.5.In all types of buildings, erected in canalized areas should include a system of internal water supply and sewerage.

In nekanalizovannyh areas of settlements of internal water supply and sewerage system with the device of local sewage treatment facilities must be provided in residential buildings with more than two floors, hotels, nursing homes (in rural areas), hospitals, maternity hospitals, polyclinics, clinics, dispensaries,sanitary and epidemiological station, rest homes, boarding houses, pioneer camps, nurseries, gardens, boarding schools, educational institutions, secondary schools, theaters, clubs, catering facilities, sports facilities, baths and laundries.

Notes: 1. The production and auxiliary buildings of the internal water supply and sewage system is allowed not to provide in cases where the company is no centralized water supply and the number of employees is not more than 25 persons.per shift.

2. In buildings equipped with internal domestic water or industrial water supply system, you need to provide for a system of internal sewerage.

1.6.In nekanalizovannyh areas of settlements is permitted to equip backlash-closets or raked (without the water supply of inputs) following building (construction):

production and auxiliary buildings of industrial enterprises with the number of employees up to 25 people.per shift;

residential building height of 1-2 floors;

hostel height of 1-2 floors is not more than 50 people .;

pioneer camp for no more than 240 seats, used only in summer;

clubs of type I;

open planar sports facilities;

catering for no more than 25 seats.

Note.Backlash-closets is allowed to provide for the design of buildings for I-III of climatic regions.

1.7.The need for internal drainage device installed architectural and construction part of the project.

1.8.Pipes, fittings, equipment and materials used in the device internal systems of cold and hot water supply, sewerage and drains must comply with the requirements of these standards, national standards, normals and specifications approved in accordance with established procedure.

during transportation and storage of drinking water should be used pipe materials and anti-corrosion coating, the permission of the sanitary-epidemiological control of the Ministry of Health for use in the practice of domestic water supply.

1.9.Main technical decisions taken on projects and priorities for their implementation must be justified by comparing the performance options.Technical and economic calculations should be performed for the options, advantages (disadvantages) that can not be installed without calculation.

best option is determined by calculating the smallest value given the cost, taking into account reduction of consumption of material resources, labor costs, electricity and fuel.

1.10.The design should include the application of advanced technological solutions and methods of work: the mechanization of labor-intensive work, automation of technological processes and maximum industrialization of construction and installation work by the use of prefabricated structures, standard and generic products and parts manufactured in factories and procurement workshops.

1.11.Basic letter symbols adopted in these rules are given in the mandatory appendix 1.

2. QUALITY AND TEMPERATURE WATER SYSTEMS WATER

2.1.The quality of cold and hot water supplied for drinking and sanitary needs, must comply with GOST 2874-82 *.The quality of water supplied to the production needs, determined by technological requirements.

2.2.The temperature of the hot water at the taps should be provided:

a) not less than 60 ° C - for centralized hot water supply systems, open systems attached to the heat;

b) not less than 50 ° C - for centralized hot water supply systems, merging a "closed system of heat supply;

c) not more than 75 ° C - for all the systems specified in paragraphs "a" and "b".

2.3.In the premises of kindergartens temperature of hot water supplied to the water fittings showers and washbasins, should not exceed 37 ° C.

2.4.In catering for other water users that require hot water with a temperature higher than specified in para. 2.2, must provide for reheating of water, local water heaters.

2.5.Hot water temperature, feed water heaters in the distribution pipes of centralized hot water systems must comply with the recommendations for the design of thermal management items.

2.6.In the localities and enterprises, where drinking water sources do not provide all the needs of consumers, while the feasibility study, and in agreement with the sanitary-epidemiological service allowed non-potable water supply quality to the urinals and toilet flushing cisterns.

3. Determination of the estimated water flow in the water and sanitation systems and heat for hot water supply

3.1.Systems of cold, hot water supply and sanitation must ensure the water supply and wastewater disposal (loss) corresponding to the estimated number of water users or set of sanitary appliances.

3.2.Water flow rate l / s and water fittings (appliance), referred to the same unit, it is necessary to determine:

separate instrument - according to mandatory Annex 2;

various devices serving the same area of ​​water users in the deadlock network - according to mandatory Annex 3;

various devices serving different water users - the formula

(1)

where of Pi - probability of actions of sanitary devices, defined for each group of water users in accordance with clause 3.4..

q0i - second flow rate (total, hot, cold), l / s, water fittings (appliance), taken according to mandatory Appendix 3, for each group of water users.

Notes: 1. When the device ring network flow rate q0 should be defined for the network as a whole and take the same for all sites.

2. In residential and public buildings and structures, for which no information on water consumption and technical characteristics of sanitary appliances are allowed to make:

3.3.The maximum flow rate of water in the settlement area network q (qtot, qh, qc), l / s, should be determined by the formula

(2)

where - the flow rate of water, the amount of which shall be determined in accordance with clause 3.2;.

a - coefficient determined according to the recommended application 4, depending on the total number of devices N on the current site of the network and the likelihood of their actions P, calculated in accordance with clause 3.4..At the same table.1 4 recommended application should guide the P & gt;0.1 of N and £ 200;for other values ​​of P and N a factor to be taken from Table.2 recommended application 4.

Under certain calculated value P, N and values ​​of q0 = 0,1;0.14;0.2;0.3 l / s for the second calculation of the maximum water flow is allowed to use nomograms 1-4 recommended application 4.

Notes: 1. The water flow at the ends of the network should be taken for the calculation, but not less than the maximum flow rate second one of the established sanitary-technical devices.

2. Water consumption for technological needs of industrial enterprises should be defined as the amount of water flow process equipment under condition of coincidence operation time of equipment.

3. For auxiliary buildings of industrial enterprises the value of q may be determined as the amount of water consumption for household needs using the formula (2) and showers needs - the number of nets installed showers for mandatory application 2.

3.4.Probability actions sanitary appliances P (Ptot, Ph, Pc) on the web sites should be determined by the formulas:

a) under the same water users in the building (s) or construction (construction) without changing the ratio of U / N

(3)

b) for different groups of water users in the building (s) or construction (construction) for different purposes

(4)

Notes: 1. in the absence of data on the number of sanitary appliances in buildings or installations P value may be determined byformulas (3) and (4), taking N = U.

2. When several groups of water users, for which the greatest water consumption periods will not be the same time of day, the likelihood of action devices for the system as a whole may be calculated according to the formulas (3)and (4) with the reduction factors determined in the operation of similar systems.

3.5.The maximum flow rate of wastewater qs, l / s, should be determined:

a) for a total maximum flow rate of water Qtot £ 8 l / s in the networks of hot and cold water supply, serving devices group, according to the formula

(5)

b) in other cases, qs = qtot.

3.6.All water consumption sanitary appliance l / h, must determine:

a) under the same water users in the building (s) or construction (construction) according to mandatory Annex 3;

b) for different water users in the building (s) or construction (construction) - the formula

.(6)

Note.In public buildings (structures), for which no information on the number and the specifications of sanitary equipment is permitted to accept:

3.7.The probability of using sanitary appliances Phr for the whole system should be determined by the formula

(7)

3.8.Maximum hourly flow rate m3 / h, should be determined by the formula

(8)

where ahr - coefficient determined according to the recommended application 4, depending on the total number of devices N, serviced projected system and the likelihood of their use Phr, calculated in accordance with clause. 3.7.At the same table.1 4 recommended application should guide Phr & gt;0.1 of N and £ 200 for other values ​​Phr and N ahr factor should be taken from Table.2 recommended application 4.

Note.For auxiliary buildings of industrial enterprises qhr value may be determined as the sum of the costs of water use on showers and drinking needs, adopted in mandatory Appendix 3 to the number of water consumers in the most numerous shift.

3.9.Average hours of water m3 / h flow rate for the period (day shift) maximum water consumption T, h, should be determined by the formula

(9)

3.10.When designing water pumping directly from the pipelines of thermal networks for the needs of hot water average temperature of hot water in the water intake risers must maintain at 65 ° C and hot water application rates to take mandatory according to Annex 3 by a factor of 0.85, while the total amount of water consumed does not change.

3.11.The maximum hourly rate of wastewater should be equal to the estimated costs determined in accordance with para. 3.8.

3.12.Daily consumption of water should be determined by summing up the water flow all consumers based on the watering water flow.Daily consumption of sewage water consumption need to be taken as excluding water consumption for watering.

3.13.