The second point. 1。 Article 1 The residential domestic water quota and hourly variation coefficient shall conform to the provisions in Table 2 according to the residential category, building standards, sanitary ware perfection and regional conditions. 1。 1 ok.
Domestic water quota and hourly variation coefficient are shown in Table 2. 1。 1
Note: When there are specific local regulations on domestic water quota, it can be implemented according to local regulations.
The second point. 1。 Article 2 The domestic water quota and hourly variation coefficient of dormitory, hotel and other public buildings shall be implemented according to the perfection degree of sanitary ware and regional conditions, according to Table 2. 1。 Of course.
Table 2 gives the domestic water quota and hourly variation coefficient of dormitories, hotels and public buildings. 1。 2
Note: ① Universities, kindergartens and nurseries are comprehensive indicators of domestic water consumption.
(2) The domestic water quota of dormitories, hotels, guest houses, hospitals, sanatoriums, guest houses, office buildings and primary and secondary schools does not include the water consumption of canteens and laundry rooms. Hospitals, sanatoriums and rest homes refer to the domestic water in wards.
(3) Market water refers to ground washing water.
(4) Domestic water quota includes not only main users, but also employees' water consumption. Among them, the domestic water consumption quota of hotels, guest houses and restaurants includes the water consumption of room attendants, excluding the water consumption of other service personnel.
The barber shop contains water for washing towels.
⑥ Domestic water quota includes not only cold water quota, but also hot water quota and drinking water quota.
The second point. 1。 Article 3 The domestic water quota of industrial enterprises shall be determined according to the nature of workshops. Generally, 25 ~ 35l/ person/shift should be adopted, and the hourly variation coefficient is 3. 0~2。 5. The use time of water is 8h.
Industrial enterprise building shower water quota should be implemented according to Table 2. 1。 3. Confirm that the duration of shower water is1h..
Table 2 of shower water quota for industrial enterprises. 1。 three
Note: ① The washing time of each vehicle is 10min, and the number of vehicles washed at the same time should be determined according to the number of platforms.
(2) when there are 25 or less cars in the garage, it should be calculated that all cars should be washed once a day; deposit
When there are more than 25 vehicles, the daily washing frequency is generally calculated as 70% ~ 90% of all vehicles.
The second point. 1。 Fourth domestic water quota, water pressure and water conditions should be determined according to the process requirements.
The second point. 1。 Article 5 For a garage equipped with a car washing platform, the water quota for car washing shall be determined according to the pavement grade and pollution degree as well as the following quotas:
Car 250 ~ 400 liters/car d
Passenger cars and trucks are 400 ~ 600 liters/car d.
Note: The washing time of each vehicle is 10min, and the number of vehicles washed at the same time should be determined according to the number of platforms.
The second point. 1。 Article 5 The water quota for garage floor flushing can be selected within the range of 2 ~ 3l/m2.
The second point. 1。 Sixth fire water consumption should be determined according to the existing fire laws and regulations.
The second point. 1。 Article 7 The rated flow, equivalent, branch pipe diameter and outflow head of sanitary ware water supply shall comply with the provisions in Table 2. 1。 7 confirm
Table 2 gives the rated flow, equivalent, branch pipe diameter and outflow head of sanitary ware water supply. 1。 seven
Note: ① The values in brackets in the table are used when calculating the diameter of cold water or hot water pipes respectively when hot water is supplied.
(2) Before opening and closing the valve to control the outflow, the required shower outflow head should be calculated.
(3) The rated flow of water supply for inflatable faucets and inflatable showers shall be multiplied by 0 according to the rated flow of the same type of water supply fittings in this table. 7 adoption.
(4) When there are special requirements for the outflow head of water supply fittings of sanitary ware, its value shall be determined according to the product requirements.
⑤ When the bathtub is equipped with a shower, the rated flow and equivalent should be calculated according to the faucet of the bathtub, so it is unnecessary to calculate the rated flow and equivalent of the bathtub with a shower repeatedly.
The second point. 1。 Article 8 Under the premise of meeting the use requirements and maintaining the normal operation of the water supply and drainage system, water-saving sanitation shall be adopted.
Sanitary ware water supply fittings. Water supply fittings of water-saving sanitary ware should meet the requirements of product standards and have product certificates.