Conversions Between U.S Customary Units and SI Units

Roman and Arabic Numerals

I	1	IX	9	XVII	17	LX	60	CCCC	400
II	2	X	10	XVIII	18	LXX	70	CD	400
III	3	XI	11	XIX	19	LXXX	80	D	500
IV	4	XII	12	XX	20	XXC	80	DC	600
V	5	XIII	13	XXI	21	XC	90	DCC	700
VI	6	XIV	14	XXX	30	C	100	CM	900
VII	7	XV	15	XL	40	CC	200	M	1000
VIII	8	XVI	16	L	50	CCC	300	MM	2000

The Metric System

The metric system is a system of weight and measurement which was first adopted by France and is now almost universally used in the sciences and art. The greater part of population of the world works on the metric system.

Basic standards: Relation between English measure and Metric measure is as follows.

1 inch               = 25.4 mm                   = 2.54 cm

1 meter             = 39.37 inches             = 1.09 yards

1 liter                = 1.76 pints                  = 0.22 galls (imp)

1 gallon (imp)   = 4.546 liters

1 gallon (US)    = 3.785 liters

1 pound avp     = 0.4536 kilograms

1 kilogram        = 2.2046 pound avp

The metric system of unit called centimeter – gram – second (CGS) system is commonly used in scientific circle, and meter – kilogram – second (MKS) or metro – ton – second (MTS) system is more generally used in engineering.

Design

Design

Water Supply System Configuration

In general, water distribution system can be divided into four main components:

1. Water Source and Intake works
2. Treatment work and Storage
3. Transmission main
4. Distribution Network

The common resources for the untreated or raw water are from surface water source such as rivers, lakes, springs, man made reservoirs and groundwater sources as bores and shallow wells.

Individual water supplies are usually from bores and shallow wells. Communal water supply can be from all water resources depending on quantity and quality of raw water. The raw water is transported to the treatment plant for processing thought transmission mains and stored in clear water reservoirs after treatment. The degree of treatment depends upon the raw water quality and finished water quality requirements.  

Water is carried over long distance trough transmission main to pump house or gravity reservoir then to be distribution to costumers by distribution network.

Reference: Design of water supply pipe network/ Prabhata k. Swamee, Ashok K. Sharma

About water

            Before we talk about engineering aspect of water, my we should consider to thinking what use of water in this life system of earth.

Water and air are essential for human life. I think I will categories water and air as special matter and forests as the only factory to recycle and produce this two special matter. Water and air also have its own will how to move around the earth, if we try to control a water it’s mean we have to compromise with Mother of Nature.

We know some categories for water, sea water, clean water, waste water and drinking water. From that all categories the most directly impact for life is drinking water, as we know drinking water is relate to all water circles so it’s very important to maintenance the earth water system. How we can do it? It’s easy actually first step by keep you forest grow and healthy, then research for more safety power source.

Now is our time to make act try to safe and make earth to be more beautiful palace for life. We have to act know, because if we not start now we will never to start, it’s better late than never. 

This site is created with the intention to knowledge share,looking for new ideas in terms of engineering and try to approach all aspects of human life. Hopefully this can be a little useful for make this world to be a better place to life

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