Zhuge Liang (181-234 A.D.) of China is considered to be the inventor of the wheelbarrow. Liang was a general who used the wheelbarrows to transport supplies injured soldiers. The Chinese wheelbarrows had two wheels and required two men to propel and steer.The earliest wheelbarrows with archaeological evidence in the form of a one-wheel cart come from 2nd century Han D.. Read More..
William Weston Young (1776–1847) Quaker Entrepreneur of Bristol and Glamorganshire; artist, botanist, wreck-raiser, surveyor, potter, and inventor of the firebrick.Fired bricks are burned in a kiln which makes them durable. Modern, fired, clay bricks are formed in one of three processes – soft mud, dry press, or extruded.Normally, brick contains the following ingr.. Read More..
Plywood is a sheet material manufactured from thin layers or ""plies"" of wood veneer that are glued together with adjacent layers having their wood grain rotated up to 90 degrees to one another. It is an engineered wood from the family of manufactured boards which includes medium-density fibreboard (MDF) and particle board (chipboard).In 1797 Samuel Bentham applied f.. Read More..
Reinforced concrete (RC) is a composite material in which concrete's relatively low tensile strength and ductility are counteracted by the inclusion of reinforcement having higher tensile strength and/or ductility. The reinforcement is usually, though not necessarily, steel reinforcing bars (rebar) and is usually embedded passively in the concrete before the concr.. Read More..
Portland cement is the most common type of cement in general use around the world, used as a basic ingredient of concrete, mortar, stucco, and most non-speciality grout. It developed from other types of hydraulic lime in England in the mid 19th century and usually originates from limestone. It is a fine powder produced by heating materials in a kiln to form what is ca.. Read More..
Macadam is a type of road construction pioneered by Scottish engineer John Loudon McAdam around 1820. The method simplified what had been considered state of the art at that point. Single-sized aggregate layers of small stones, with a coating of binder as a cementing agent, are mixed in an open-structured roadway.John Loudon McAdam was born in Ayr, Scotland in 1756. I.. Read More..
The cat's eye is a retroreflective safety device used in road marking and was the first of a range of raised pavement markers. It originated in the UK in 1933 and is today used all over the world. It consists (in its original form) of two pairs of reflective glass spheres set into a white rubber dome, mounted in a cast-iron housing. This is the kind that marks the.. Read More..
A backhoe loader, also called a loader backhoe, digger in layman's terms, or colloquially shortened to backhoe within the industry, is a heavy equipment vehicle that consists of a tractor like unit fitted with a shovel/bucket on the front and a small backhoe on the back. Due to its (relatively) small size and versatility, backhoe loaders are very common in urban e.. Read More..
Linoleum is a floor covering made from materials such as solidified linseed oil (linoxyn), pine rosin, ground cork dust, wood flour, and mineral fillers such as calcium carbonate, most commonly on a burlap or canvas backing; pigments are often added to the materials.In 1860, rubber manufacturer Fredrick Walton invented linoleum, the floor and wall covering often used .. Read More..
A revolving door is a type of door that, as its name suggests, revolves in its frame.Most kinds of doors are bolted to the wall and are on hinges. They open only one way, for a theoretical maximum of 180 degrees rotation. Sometimes hinge-doors can open both ways in their frames, for a theoretical maximum of 360 degrees rotation. A revolving door, however, has a theore.. Read More..
Katherine Blodgett (1898-1979) was a woman of many firsts. She was the first female scientist hired by General Electric’s Research Laboratory in Schenectady, New York (1917) as well as the first woman to earn a Ph.D. in Physics from Cambridge University (1926). She was the first woman to receive the Photographic Society of America Award and the American Chemical Soc.. Read More..
Cenocell is a patented concrete material that is manufactured without the addition of Portland cement.It is produced from a chemical reaction involving fly ash with organic and inorganic chemicals. It was invented by Mulalo Doyoyo and Paul Biju-Duval at the Georgia Institute of Technology. It is generally known as "cementless concrete".Fly ash is an unwanted pollutant.. Read More..
Fibre cement is a composite building and construction material, used mainly in roofing and facade products because of its strength and durability.HistoryFibre-reinforced cement-products were invented in the late 19th century by the Austrian Ludwig Hatschek. He mixed 90% cement and 10% asbestos fibres with water and ran it through a cardboard machine, forming strong th.. Read More..
A geodesic dome is a spherical or partial-spherical shell structure or lattice shell based on a network of great circles (geodesics) on the surface of a sphere. The geodesics intersect to form triangular elements that have local triangular rigidity and also distribute the stress across the structure. When completed to form a complete sphere, it is a geodesic sphere. A.. Read More..