Planning of the Clean Water Distribution System Pipeline at Griya Arwana Lestari Housing, Merauke Regency

Griya Arwana Lestari Housing Merauke Regency is one of the housing estates located in the area around the Merauke coast. The majority of residents of Griya Arwana Lestari housing use rainwater sources and buy water from water tanker trucks for their clean water needs. When the dry season arrives, the price of water from tanker trucks is quite expensive, making it difficult for residents of Griya Arwana Lestari housing to get clean water. So it is necessary to plan a clean water supply network system. The purpose of this study is to find out how much the discharge needs of clean water in Griya Arwana Lestari housing and find out what the diameter of the main pipe and secondary pipe are used. The method used is qualitative and quantitative based on field observations and counting the number of occupants in sustainable arowana housing then analyzing the need for clean water and then determining the diameter of the main pipe and secondary pipe. The results in this study are the required discharge in the housing is 3,973 l/s and for the main pipe diameter is 4 inches and for the secondary pipe 1 inch.


Preliminary
Water is one of the main needs for humans to carry out daily activities. Water is used in daily life for family needs and for the needs of public facilities. All types of water that collect above the ground surface are called surface water, including river water, reservoirs, lakes, swamps and groundwater or wells. Surface water sources come from rainwater that seeps into saturated soil that collects in a soil basin to form swamps, lakes or reservoirs [1]. Visually, the surface water looks dirty, this dirt is caused by the flow of water that carries particles of sand, mud and other objects. Usually for irrigation water needs, household needs, drinking water, industry and others [2].
Griya Arwana Lestari Housing Merauke Regency is one of the housing estates located in the area around the coast of Merauke Regency. The majority of residents of Griya Arwana Lestari housing use rainwater sources and buy water from water tanker trucks for their clean water needs. When the dry season arrives and the price of water from tanker trucks is quite expensive, it is difficult for residents of Griya Arwana Lestari housing to get clean water, especially during the dry season [3,4].

Domestic demand (Qd)
The use of water for household needs is called domestic water needs with a public faucet connection. To calculate domestic water needs, it is necessary to have an average water requirement per person per day (L/org/hr) which is adjusted to the place of residence of each person because water needs will be different in each particular city category [3]. The more advanced a city is, the higher the level of human need for water [4]

Non-domestic needs (Qn)
The number of people in a 60 m2 shophouse = 56 people. Domestic water demand = 10 L/day.

Main pipe and secondary pipe
Calculate the diameter of the main pipe and secondary pipe. For planning the diameter of the pipe, it is by determining the speed in the pipe and getting the diameter of the pipe according to the required discharge. According to the PU candy no. 18 of 2007 the standard speed in the pipe is (0.3 -4.5 m/s) in this pipe design a speed of 0.6 m/s is used because if the speed is too high it causes damage to the pipe and if the speed is too low there will be accumulation of sediment in the pipe [5]

Main pipe diameter
To find the diameter of the main pipe or main pipe, the following formula is used:

Second pipe diameter
For discharge on the secondary pipe, the largest (maximum) discharge is in block 2 of the Arwana housing block, this discharge represents the dimensions of the secondary pipe.

Conclusion
The conclusion of this study regarding the planning of the clean water distribution system pipeline at the Griya Arwana Lestari Housing, Merauke Regency is the E3S Web of Conferences 328, (2021) ICST 2021 required discharge at the Griya Arwana Lestari housing based on the total population of L/sec or 0.004 m3/sec. The results of the analysis of pipe calculations obtained the diameter of the secondary pipe and the main pipe, namely the secondary pipe diameter D = 0.025032 m or 1 inch pipe. Main pipe diameter D = 0.1006 m or 4-inch pipe 3,973.