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Showing posts with label pvc pipes. Show all posts
Showing posts with label pvc pipes. Show all posts

Tuesday, May 31, 2016

7 Mysterious and Amazing Water Supply Systems of the Ancient Times

A network of pipes in the Philippines is one of the ways to convey potable water to urban and rural communities. Today, it is quite easy to build complex water supply systems using advanced engineering and construction techniques. This is not the case in the olden times where water is considered almost as precious as gold. Well, we still treat water as an essential resource in order to live today, but back then they had a hard time bringing it to their villages considering they lack modern tools to do it.

How did early humans transport water to their settlements using their primitive tools and methods? Interestingly, ancient civilizations were able to build water supply systems which are considered as some of the greatest feats of engineering and architectural marvel. This was during a time when HDPE or PVC pipes like the ones found in the Philippines or any plastic pipes are not invented yet. Here are some examples:

The Nazca Holes

Image Source: BBC
We haven’t yet solved the mystery behind the Nazca Lines of Peru that consists of over a thousand figures of biomorphs and geoglyphs deliberately “drawn” in the Nazca desert by ancient Peruvian Nazca people (100BC to 800AD). Another puzzle emerged from this place which is not composed of lines but gaping spiral holes as pictured below. These are called puquios, “a sophisticated hydraulic system constructed to retrieve water from underground aquifers,” Rosa Lasaponara of the Institute of Methodologies for Environmental Analysis in Italy explains in BBC. Despite being the most arid places on Earth, the puquios were used for agriculture, irrigation and domestic needs that can last a whole year.

Angkor Wat’s Hydraulic System

The Angkor Wat (“temple city”) in Cambodia was commissioned by King Suryavaram II in 12th century to honor their Hindu god Vishnu. Deep within the temples of Angkor is a sophisticated water supply system created by Khmer engineers. As stated by BBC, around 9th century, they were “storing and distributing vast quantities of precious seasonal monsoon water using a complex network of huge canals and reservoirs.” However, due to worsening climate and mismanagement, the Khmer civilization collapsed along with its hydraulic system.

The Acequias of New Mexico



The past is in the past. But what if this past is the only solution to save the present? The snow in Rocky Mountains in New Mexico is melting fast. The melting snow is not going down the rivers but evaporating up in the air. The rivers are the source of irrigation in the area but without the snow in the mountain, water scarcity is inevitable. This is why the locals revived the ancient irrigation systems called acequias, a network of hand-dug conduits. This is a smart move because Sam Fernald of New Mexico State University tells Frontera Desk that “it’s better to store water underground in northern areas because it’s cooler and, you don’t have evaporation.”

The Aqueducts of Ancient Rome

Image Source: crystalinks.com

Of course, we wouldn’t forget one of the popular water systems of the ancient world, the Roman aqueducts. It is derived from two Latin words, aqua (“water”) and ducere (“to lead”). Ancient Romans were sticklers for cleanliness so it is understandable for them to build a “water bridge” to satisfy their needs. According to Crystalinks, the aqueducts provided a constant supply of water used in public baths, latrines, fountains and private households. It served a million of residents at the time.

The Kahrizes of Nakhchivan

Thanks to the ingenuity of their ancestors the people of Nakhchivan Autonomous Region (NAR) in Azerbaijan are now benefitting from old water supply systems. Thru the collaboration of NAR and Switzerland, they launched a project called “Community-Owned Sustainable Water Use and Agricultural Initiatives (COSWA)” to make this possible, International Organization of Migration of Switzerland reports. Since 2011, the region receives three times as more water from the underground water supply systems.

Nabataeans’ Water Channeling Technology 

Image Source: ancientwatertechnologies.com
We don’t know much about the Nabataeans (586 BC) aside from the fact that they were ancient Semitic people and built an empire in the canyon of Petra in Jordan. The question is: how did they survive in such dry and arid climate? Based on an article in Ancient Origins, they made a “water channeling technology… including the construction of aqueducts, terraces, darns, cisterns, and reservoirs, as well as methods of harvesting rainwater, flood water, groundwater, and natural springs.” In short, all possible sources of water are harvested and utilized. They even have underground cisterns with waterproof cement to prevent the water from seeping into the earth, the article states.

Ancient India’s Water Management System

Around 2500-1700 BCE, the Indus Valley Civilization emerged at Harappa and Mohenjo-Daro, near the Indus River in India. During that time, the people of ancient India developed a water management system that was ahead of its time. In an article in 6bridges, it says that the people built drainage systems, wells, water tanks, canals, sewage systems, and bunds. Ancient History Encyclopedia tells that their houses had wells and bathrooms. The people used brass vessels to purify water, which microbiologists believed can help combat many water-borne diseases.

Towns in Harappa have distinct features. In Lothal, they had a water purification system with aeration chambers, lime and charcoal. In Dholavira, they had a water conservation system consisting of channels and reservoirs made of stone. The town of Rajasthan built a rooftop water harvesting system.

These are especially astonishing accomplishments more so because their time is the reflection of what we have today and they didn’t need a pipes to make irrigation history.

Sunday, November 1, 2015

Colors and Uses of PVC Pipe in the Philippines

colored pvc pipes in the Philippines
Image Resource:www.simplifiedbuilding.com
PVC (Polyvinyl Chloride) pipes are the most commonly used material for piping systems in the Philippines. The ASTM (American Society for Testing and Materials) is an internationally recognized organization that develops and publishes the standards for the pipe’s pressured and non-pressured applications.

General Uses

Some of the widely used applications of it, as per ppfahome.org,  are piping systems for plant irrigations, sewers, drain-waste-vents, water service lines, water mains, conduit, and various industrial installations.

Characteristics

The above-stated uses of PVC for piping systems were based on the quality of the material to provide a long usage lifespan, resistant to corrosion, environmentally sound, easy to install, cost effective, and widely accepted. That is why many companies are using PVC for most of their piping systems. It can even last for a hundred years.



Color Indicators
Blue
Water
Red
Fire
Purple
Reclamation
Green
Sanitary
Orange
Telecommunications
Gray
Electrical Conduit
Yellow
Gas Distribution
White
All Purposes

Speaking of pipe uses, according to all-about-pipe.com,  there are some indicators to know which type of pipe is to be for every piping system. For most water systems, blue colored pipes are used in main pipes. For most fire systems, red colored pipes are used. Purple colored pipes are used for water reclamation systems.  Green colored pipes are used for sanitary water systems. Orange colored pipes are used for telecommunications pipelines. Gray colored pipes are used for electrical conduit systems. Yellow colored pipes are used for gas distribution lines. And the white colored pipes are used for all types of applications.


Of all the other products invented or discovered using PVC, the pipe is the most commonly used and marketed since the second world war. Aside from that, other materials for making pipes are so scarce during that period, that is why PVC prevailed among them and made its name throughout those past years as the most cost effective and reliable piping material.