photo: Creative Commons / Manuguf
Caterpillar D9
photo: WN / Renzelle Mae Abasolo
NATIONAL ROAD - INDUSTRIAL - ENGINEERING VEHICLES - CONSTRUCTION EQUIPMENTS
photo: Creative Commons / BetacommandBot
Caterpillar D6
photo: US DoD
US Army (USA) Soldiers from Alpha (A) Company (CO) 463rd Engineer Combat Battalion (ECB), West Virginia level ground on F Street near 2nd Avenue with a Caterpillar 621b scraper (right) and Caterpillar D7E Track-type Tractor to prepare it construction on A
photo: Creative Commons / Μυρμηγκάκι
A Caterpillar D5H parked on a construction site in South Florida.
photo: Creative Commons / BotMultichill
Hornsby tractor
photo: Army / CPL ALICIA M. GARCIA, USMC
Iraqi Freedom III, AL ASAD, AL ANBAR IRAQ (IRQ)
photo: Creative Commons / MathKnight
A bulldozer is a crawler (caterpillar tracked tractor), equipped with a substantial metal plate (known as a blade), used to push large quantities of soil, sand, rubble, etc., during construction work. The term "bulldozer" is often used to mean any heavy equipment (sometimes a loader and sometimes an excavator), but precisely, the term refers only to a tractor (usually tracked) fitted with a dozer blade or bucket. That is the meaning used here.
photo: Creative Commons / Erik Christensen
Volvo T25, 1956, Gasoline tractor
photo: Creative Commons / DanMS
EO1 (SCW) Lawrence A. Zeigler practices operating a D8T bulldozer at Robertson Barracks Driver Training Area, Australia. Members of NMCB 4 are deployed in support of a United States, Australian Defense Joint Rapid Airfield Construction (JRAC) exercise
photo: Creative Commons / BetacommandBot
Caterpillar D6M (side)
photo: Creative Commons / MathKnight
CAT D9L, the first D9 model to employ the "high drive" configuration.
photo: Creative Commons / Btr
A track loader is an engineering vehicle consisting of a tracked chassis with a loader for digging and loading material. The history of track loaders can be defined by three evolutions of their design. Each of these evolutions made the track loader a more viable and versatile tool in the excavation industry. These machines are capable in nearly every task, but master of none. A dozer, excavator, or wheel loader will out perform a track loader under a set of conditions, but the ability of a track
photo: Creative Commons / MathKnight
A loader is a heavy equipment machine (often used in construction) that is primarily used to "load" material (asphalt, demolition debris, dirt, feed, gravel, logs, raw minerals, recycled material, rock, sand, wood chips, etc.) into or onto another type of machinery (dump truck, conveyor belt, feed-hopper, rail-car, etc.).
photo: Creative Commons / Ciszewski W
A steam shovel is a large steam-powered excavating machine designed for lifting and moving material such as rock and soil. It is the earliest type of power shovel.(A derelict steam shovel in Alaska; it clearly shows boiler, water tank, winch, main engine, boom, dipper stick, crowd engine, wheels and bucket.)
photo: Creative Commons / Serguei S. Dukachev
Object 430 prototype at the Kubinka Tank Museum
photo: Creative Commons / Gun Powder Ma
The Limyra Bridge (in Turkish: Kırk Göz Kemeri, "Bridge of the Forty Arches") is a late Roman bridge in Lycia, in modern south-west Turkey, and one of the oldest segmented arch bridges in the world. The 360 m (1,181.1 ft) long bridge is located near the ancient city of Limyra, and spans the Alakır Çayı river over 26 segmental arches. These arches, with a span-to-rise ratio of 5.3:1, give the bridge an unusually flat profile, and were unsurpassed as an architectural achievement until the late Mid
