SYSTEM DSIGN

System Design

Rain Water Harvesting | Amita Jain / Srishti Mokha Course guide : Prof. Gaurang Shah

Brief Systems design is the process of defining and developing systems to satisfy specified requirements of the user.

Water

Water Harvesting Water Management Ground water management Water management in campus Rain water Rain water harvesting

Why water?

To help save a precious resource that is fast depleting in our country. To reuse a secondary source of water for secondary applications. To save millions of liters of rain water thus, saving potable water.

Less than 2 percent of earth’s water is ground water, but it provides 30 percent of our fresh water.

Without rain water’s continued replenishment of the water table, potable water would become scarcer than it already is.

Preservation method Water

Rain water

Medium

Public

Private

Water

Preservation method

Rain water

Medium Area intervened Gardens

Bus stops

Public toilets

Public

Gardens

The Empress Garden is managed by the Agri-Horticultural Society of Western India.

The Garden covers a sprawling 39 acres.

The water source to the garden is the canal from the Mulla-Mutha river and travels through the garden. They have also built their own drainage canals in and about the garden. Example: picture 1. They also have a well within their area from which they draw water and which acts as a source for watering and maintaining the garden.

The garden attracts tourists, young kids and many others but lacks a well found base to serve them. For example: lack of seating arrangement, lack of shelter and other facilities, overlooking the water condition, etc.

Despite of the 39acre land the garden owns, they haven’t taken any step for rain water harvesting.

Possible scenario : We can take in account the vast area of land and save / channelize rain water in the given 39acres of land

+ Step well

Empress Garden Community garden that gathers children, oldies and youngsters

Water

Preservation method

Rain water

Medium Possibilities

Area intervened

Space

Gardens

Shelter

Bus stops

Charging G.W

Public toilets

Public

Bus stops

Bus stops also cover major areas in the public sector. It is also the most popular means of transportation for the common man.

Research has been done on two major bus stops : Hadapsar and Pool Gate Hadapsar Bus Depot Hadapsar Bus Stop Hadapsar Bridge were the 3 possible scenarios Observations : Major coverage area Lack of shelter Lack of greenery Gathers min.1000 people a day Cleaning of buses Pubic toilets Drains to avoid water blocking General stores around the bus stop Traffic flow is highest during the office hours Unbearable heat during afternoons Lack of seating arrangement Water tankers – during scarcity of water

Bus stops

Pool Gate Like Hadapsar, Pool Gate is also a main Bus stop.

It also has a small petrol pump.

There is a small garden made in between which acts as divider whereas Hadapsar bus stop don’t have dividers or garden.

It has public toilets where water tank is installed.

There is lack of shelter and greenery which becomes unbearable for people during afternoon.

Hadapsar and Pool gate bus stop Possibility to provide green and comfortable environment

Water

Preservation method

Rain water

Medium Area intervened Gardens

Public Possibilities

Bus stops

Public toilets

Shelter

Greenery

Awareness

Public toilets

Public Toilets at Hadapsar bus stop: Use of water tank from the PMC in case of extra usage, apart from the routine supply Water used for •Cleaning •Sanitation •Washing Max. water usage per day = 200litres For extra usage, they use PMC water tanks Possible scenario: Water from nearby areas, rain water can be stored and made to serves the Cleaning Washing Flushing purposes

Public Toilets Extra use of potable water

Water

Preservation method

Rain water

Medium Area intervened Gardens

Public

Bus stops

Possibilities Public toilets

Use rain water Awareness Save potable water

Concepts Scenario for conceptualization: Rain water harvesting Rain water harvesting at public places Rain water harvesting at bus stops

There is section itself in roof of bus stop to collect water and channelize it to ground.

Its an extended roof so that it can collect water and can channelize it to ground. Also it provides more shade.

This is tensile structure which collects water and channelize it to ground to recharge ground water.

There is seating for people to rest in shade and to provide them comfort environment.

As we took public places we thought of educating it to masses who travel through public transport. In this concept there is transparent water tank which collects water and filter rain water to first level so that it reduces cost of post cleaning process. The transparency makes connection to public that they need to save water.

It also serves as area where drinking water is available for travelers.

Its like how traditionally we use to collect water in ‘ghadas’, similarly we collect water in vessel which becomes portable water and can be sold by shops to travelers. In this way they will earn and also save water. If one vessel fills you can put another on top in this way you will have count on how much water you have saved in the season

In this concept there are small modules which forms a cross like structure. These modules are flexible tank which stores water in it.

Water collects PMC takes the stored portable water PMC stores in it’s reservoir and clean it further PMC provides back to public areas like toilets where cleaning is required.

There is low maintenance cost because of flexible water tank.

But there are chances of vandalism.

Final concept Inspired from Umbrella.

An umbrella depicts shelter and an inverted umbrella depicts collection.

It will be placed in public spaces and will directly recharge the ground water.

There are many possible scenarios where it can be used.

It can be used in many public places instead of bus stops. Instead of covering a area we tried covering many areas.

It can be used in bus stops, as dividers, on tanks etc.

Different scenarios where it can be placed.

Top view

Different profiles for form Used hexagon to tessellate the structure so that it can acquire more areas in some places. It inspired from honey bee comb

Flow of water

Explorations with form

Hexagonal shape is for tessellation.

We chose this form because it looked light weight and sleek. It was also conveying are both the inspiration well.

Final form

Manufacturing process – the funnel will be roto molded, Pipe will be extruded and will be available in different heights.

The funnel is modular can be easily installed and maintain.

The area of funnel = 1.5 m sq.

Height of structure = 3 m Diameter of pipe = 160 mm Insert molded screws to fasten lid with funnel

1msq = 1m *1m = 100 cm *100cm 1msq = 10000cm sq Volume = 1msq *1msq = 10000msq *0.1cm = 1000cc = 1L

Lid (to protect direct air contact and sunlight. It will also prevent dust and objects to enter the pipe Funnel ( It will collect water and stream it to pie which is connected to underground water tank Outer threading to fix funnel with pipe Filtration plate which avoid trash to go inside pipe PVC Pipe

Hexagonal shape is for tessellation and it also provide opposite force which makes the structure sturdy. It can be used in areas like parks where it requires shelter and comfortable environment.

Colour scheme

Depiction of tree and can also relate to shelter and shade.

As it is inspired from honey comb so to represent the hive

Depiction of sky which holds water and relates to water directly

In gardens and parks

In gardens and parks

Being a modular unit it can be placed above tanks so it collect rain water and reduce use of potable water.

Table in restaurants

We want to save water!!

Thank you