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Travaux de renouvellement du site propre du trolley à Nancy dans le cadre des aménagements pour la ligne 1 du trolley.
Pays : France 🇫🇷
Région : Grand Est (Lorraine)
Département : Meurthe-et-Moselle (54)
Ville : Nancy (54000)
Quartiers : Nancy Centre
Adresses : avenue Foch / place de la république
A group of civil engineering students from Oregon State University visited with some of our Oregon DOT engineers in Salem. One activity was building toothpick and gumdrop bridges.
New York, New York
Completed May 1883
On May 24, 1883, with schools and businesses closed for the occasion, New York celebrated the opening of the Brooklyn Bridge. Also known as the Great East River Bridge, it was built over 14 years in the face of enormous difficulties. Deaths, fire in the Brooklyn caisson, and a scandal over inferior materials all added to the turmoil. The bridge is one of the most well-recognized symbols of American engineering, and remains the unofficial Eighth Wonder of the World.
John A. Roebling designed the bridge, but died before construction began. His son Washington Roeblingwas then appointed chief engineer, but became ill during construction; so his wife Emily Roeblingtook on some of his duties. It is possible the bridge would not have been completed without her meticulous efforts in inspection and management.
Facts
- The suspension system was initially designed in iron, but was changed to steel to reduce the dead load weight.
- The bridge's 1,595.5-foot span broke all world records for span length.
- The 276.5-foot towers took three years to complete and were higher than New York's tallest office building.
This was the first time that galvanized steel wire was used in cable construction. The four cables are each nearly 16 inches in diameter and each contains over 5,000 galvanized steel, oil-coated wires.
- "To guard against vertical and horizontal oscillations and to ensure that degree of stiffness in the flooring which is absolutely necessary to meet the effects of violent gales in such an exposed situation, I have provided six lines of trusses." John Roebling, 1854, Brooklyn Bridge proposal.
- Men known as Cable-spinners would use a four-foot-wide swaying catwalk to supervise workers as they inserted wires into the cables.
- The deck was originally divided to provide two elevated railroad tracks, two trolley car tracks, a single-lane road, and a 15-foot-wide walkway.
Resources
- Alan Trachtenberg, Brooklyn Bridge: Fact and Symbol (Chicago: University of Chicago Press, 1965, 1979)
- David McCullough, The Great Bridge: The Epic Story of the Building of the Brooklyn Bridge (New York: Simon & Schuster, 1972; paperback edition by Avon Books in 1976).
- Dogancay, Burhan, Bridge of Dreams : The Rebirth of the Brooklyn Bridge
McCullough, David, The Great Bridge : The Epic Story of the Building of the Brooklyn Bridge, 1983, Simon & Schuster.
- Pascoe, Elaine, The Brooklyn Bridge (Building America), 1999, Blackbirch Marketing.
For more information on civil engineering history, go to www.asce.org/history.
A group of civil engineering students from Oregon State University visited with some of our Oregon DOT engineers in Salem. One activity was building toothpick and gumdrop bridges.
Loughborough University Business School site
This image is part of the CalVisual for Construction Image Archive. For more information visit www.engsc.ac.uk/resources/calvisual/index.asp
Author: Loughborough University
Reilly Contractors project for our client involved the extension of an existing sewer main to service a newly created subdivision.
The City of Hoover has seen enormous growth in its sports programs over the past 10 years and needed a new complex that would fulfill their existing needs, allow for growth and give the City the ability to create new revenue streams and take advantage of sports tourism by hosting large tournament events. Hoover had not built any new athletic facilities in 15 years. At the same time the City’s sports participation had increased by multiples of 200% - 500% depending on the sport. The growth was caused by increases in both youth and adult sports leagues, as well as the relatively recent popularity of additional sports.
The multi-purpose Finley Center, which connects to the existing Hoover Met baseball stadium with a covered walkway, is able to accommodate a full-size football or soccer field, nine regulation-size basketball courts, 12 regulation-size volleyball courts or six indoor tennis courts. It can also seat 2,400 for banquets and 5,000 for events with general seating, such as a graduation ceremony or concert. Additional features of the indoor facility include a recreational walking track suspended 14 feet in the air, an athletic training and rehab center, and a food court.
The Finley Center sits on a 120 acre site that GMC master planned and includes fields for soccer, lacrosse, football, baseball and softball, tennis courts, a play ground walking track and splash pad.
Goodwyn, Mills and Cawood (GMC) provided master planning, architecture, interior design, civil engineering, construction materials testing, and environmental engineering services for this project.
Pennsylvania/Maryland border to the Maryland/Delaware border
Surveyed 1763-1767
The granite milestones marking the Mason-Dixon Line bear crests from the two parties involved in the land-grant dispute, the families of William Penn and Charles Calvert (also known as Lord Baltimore).
What is now generally referred to as the Mason-Dixon Line was established by the Missouri Compromise of 1820 as a demarcation between slave and free territories. But that important geographic border took its name from a previous Mason-Dixon Line; one established more than 50 years earlier to formally separate Maryland from Pennsylvania and Delaware. The two Englishmen for whom the line is named accomplished one of the greatest surveying achievements of early America.
Charles Mason and Jeremiah Dixon were both assistants to astronomer James Bradley at the Royal Conservatory at Greenwich. They were brought to America to settle a border dispute between the inheritors of the land grants establishing Maryland and Pennsylvania. Taking into account the curvature of the earth, the pair carried out extremely precise measurements using astronomical tables and angles based on circular arcs. Their method quickly became the basis for establishing other town and state boundaries, as well as the U.S.-Canada border.
Facts
Mason and Dixon made use of relatively simple tools in carrying out their calculations. These include an instrument known as a zenith sector, made by an expert clock maker; a navigator's quadrant; a direction transit; an astronomical clock; wooden rods 16.5 feet long and equipped with spirit levels; and 66-foot chains.
The granite milestones marking the Mason-Dixon Line bear crests from the two parties involved in the land-grant dispute, the families of both William Penn and Charles Calvert, also known as Lord Baltimore.
The association of the Mason-Dixon Line with the border between the North and the South in the Civil War has led some to believe that "Dixie," a common nickname for the South, refers to the distinction drawn by the line. More reliable sources, however, trace the origins of "Dixie," and "Dixieland," to the use of French currency in the early 18th century in New Orleans -- in many ways the capital of the South before the Civil War -- where "dix," the French word for "ten," was printed on ten-dollar bills.
Resources
- Edwin Danson, Drawing the Line: How Mason and Dixon Surveyed the Most Famous Border in America; John Wiley & Sons, 2000, ISBN 0471385026
- Thomas Pynchon, Mason and Dixon; Henry Holt and Company, 1997, ISBN 0805037586
- William Ecenberger, Walkin' the Line: A journey from Past to Present along the Mason-Dixon; M. Evans, 2000, ISBN 0871319101
For more information on civil engineering history, go to www.asce.org/history.
The Ferro-Concrete Review was a monthly journal produced to publicise the Mouchel-Hennebique method of reinforced concrete construction 'in engineering and architetcural practice'. Edited by W Noble Twelvetrees it is a highly informative periodical full of details and illustrations of numerous contemporary construction projects. The Mouchel-Hennebique method was the result of the engineer L G Mouchel being the British agent for the Hennebique French/Belgian method of early concrete reinforcement patented by François Hennebique (1842-1921).
This advert was taken by the Trafford Park, Manchester, based construction company of Edmund Nuttall & Co. who were the principal contractors in the construction of the famous Royal Liver Building at Pier Head in Liverpool. One of the "Three Graces", the major buildings that formed the maritime gateway to the great port city, it was designed by Walter Aubrey Thomas for the Royal Liver Assurance Company was opened in 1911 being one of the earliest exmaples of a reinforced concrete structure in the UK.
Construction de 43 logements collectifs sur le site de l'ancien Hôpital Villemin.
P R É S E N T A T I O N
Construction : 2025 → 2027
Architecte : Bagard & Luron Architectes
Fonction : Logements
Permis de construire : 54 395 24 00075
▻ Délivré le 13/11/2024
A R C H I T E C T U R E
Niveaux : R+6
Hauteur : 24,00 m
Surface de plancher : 2 939,37 m²
Superficie du terrain : 1 297 m²
L O C A L I S A T I O N
Pays : France 🇫🇷
Région : Grand Est (Lorraine)
Département : Meurthe-et-Moselle (54)
Ville : Nancy (54000)
Quartier : Nancy Sud
Adresse : rue Du Professeur Alain Larcan
Fall restraint bags ,should one of the men fall during the unloading of the concrete sections these bags will prevent a serious injury
Poids en ordre de marche : 25 400 - 26 400 kg
Démolition du viaduc de Herserange construit en 1961 et long de 400 mètres.
Pays : France 🇫🇷
Région : Grand Est (Lorraine)
Département : Meurthe-et-Moselle (54)
Ville : Herserange (54440)
Construction : 1961
Déconstruction : Juillet 2025 → Août 2025
Travaux sur le réseau de chauffage urbain rue des Jardiniers à Nancy.
Pays : France 🇫🇷
Région : Grand Est (Lorraine)
Département : Meurthe-et-Moselle (54)
Ville : Nancy (54000)
Quartier : Nancy Sud
Adresse : rue des Jardiniers
Portes ouvertes à la Carrière de Trapp de Raon-l'Étape lors des Journées européennes du patrimoine 2023.
Poids en ordre de marche : 104 500 kg
Capacité du godet : 10 - 14 m³
Construction de l'ensemble immobilier Les Rives D'Austra comprenant 4 bâtiments pour 98 logements.
Pays : France 🇫🇷
Région : Grand Est (Lorraine)
Département : Meurthe-et-Moselle (54)
Ville : Nancy (54000)
Quartier : Nancy Sud
Adresse : 38, boulevard de la Mothe
Fonction : Logements
Construction : 2025 → 2026
▻ Architecte : Clement Blanchet Architecture
Permis de construire n° PC 54 395 24 00019
▻ Délivré le 17/07/2024
Permis de construire n° PC 54 395 24 00018
▻ Délivré le 17/07/2024
Niveaux : R+5
Hauteur : 18,50 m
Surface de plancher : 6 400 m²
Superficie du terrain : 2 792 m²
Easton, Pennsylvania to Phillipsburg, New Jersey
Completed 1896
"The cantilever pattern has been adopted, which will give the structure the appearance of a suspension bridge..."
- Easton Daily Express, Easton, PA, October, 1894
The crossing of the Delaware River at Easton, Pennsylvania, provided a central link in travel from the northeastern seaboard to America's inland territories throughout the 18th and early 19th centuries. From 1806 to the mid-1890s, travelers used a landmark wooden structure built by noted bridge-builder Timothy Palmer. By the 1880s, however, Palmer's three-span covered bridge could no longer handle the demands of traffic generated by new trolley lines.
Combining aesthetics with economical design, the Northampton Street Bridge employs a cantilever design with overhead sway bracing confined to the pier elements, giving it the appearance of a small, graceful suspension bridge. Fine ornamental work and miniature turret finishings on the main verticals add to the bridge's elegant presence. Built for the Delaware Bridge Company and operated as a toll bridge, it was sold to the Delaware River Joint Bridge Commission in 1921 and has been toll-free to automobile traffic ever since.
Facts
The Northampton Street bridge consists of a 300-foot center span and two side spans of 125 feet each. It was designed by James Madison Porter, a professor of civil engineering at nearby Lafayette College, and built by Charles Macdonald, founder and president of the Union Bridge Company and president of the American Society of Civil Engineers in 1908.
Only two other bridges of similar design are known to exist in the United States -- the Frisco Bridge, a railroad bridge crossing the Mississippi River at Memphis, Tennessee built in 1892, and the swing span of the double-deck railroad and highway bridge crossing the Mississippi at Rock Island, Illinois built in 1893.
Hurricane Diane caused massive flooding along the Delaware River in 1955, creating a break of about 100 feet in the central span of the Northampton Street bridge. Temporary bridges erected just north of the structure carried traffic for two years while the bridge was being repaired. In 1990, the entire bridge underwent a thorough restoration.
Resources
Carol P. Henry, Charles L. Best, Jackson L. Durkee, "Northampton Street Bridge"; Journal of Structural Engineering, Vol. 110, No. 7, July 1984.
For more information on civil engineering history, go to www.asce.org/history.
The Coastal Carolina University Softball and Baseball Complex project by Goodwyn, Mills and Cawood consists of demolition and replacement of the current stadium in an effort to achieve the Chanticleer program’s goal of providing top-rate facilities for student athletes that emulate the “Coastal” feeling.
Improvements include new team facilities, recessed dugouts, 2,500-spectator seating capacity, restrooms, full-service concessions, novelty sales area, press box with work space for media personnel, premium box and suite areas, clubhouse and locker room for athletes along with coaches and umpires and potential upgrades to the lights, scoreboard and existing landscape.
This facility was designed in collaboration with Populous.
Not the most common visitors to Saltley were class 37s, here 37092 is seen behind the depot building.
Portes ouvertes à la Carrière de Trapp de Raon-l'Étape lors des Journées européennes du patrimoine 2023.
Poids en ordre de marche : 104 500 kg
Capacité du godet : 10 - 14 m³
The mid-transfer deck coffee shop is gone, leaving nothing but a discoloured patch and a waifed sign
Travaux de renouvellement du site propre du trolley à Nancy dans le cadre des aménagements pour la ligne 1 du trolley.
Pays : France 🇫🇷
Région : Grand Est (Lorraine)
Département : Meurthe-et-Moselle (54)
Ville : Nancy (54000)
Quartier : Nancy Sud
Adresse : boulevard Jean-Jaurès
New Milford, Connecticut
Constructed 1926-1929
The statement that a hydro-electric plant can pump its own water supply sounds absurd on the face of it, yet this is virtually what happens in the case of the Rocky River Hydro Plant...
- Chief Engineer Paul Heslop, Connecticut Society of Civil Engineering meeting, 1928
Most residents of western Connecticut know 11-mile long Candlewood Lake as a recreational resource for boating, fishing, and swimming. Not many are aware that the lake is part of the first major project in the United States designed to generate electricity from water pumped into a reservoir. The project's design is made possible by the economics of the electricity market, where power provided during periods of greatest demand generates the highest rates.
To create Candlewood Lake, builders dammed a pair of tributaries to the Housatonic River, forming the basis for the reservoir. The eight-square-mile storage area is then filled by pumping water from the Housatonic at periods when electricity to run the pumps is least expensive. Power generated by releasing the same water can then be sold at higher rates during periods of peak demand. The technology pioneered at the Rocky River project-reversible pumps that also act as generators-was not widely used in other U.S. projects until the 1950s and 1960s.
Facts
The first pumped-storage facility in the world was built in 1909 near Schaffhausen, Switzerland. Unlike the Rocky River plant, it used a pump to store water and a separate turbine to generate electricity. By the time of the Rocky River project, more than 40 pumped-storage hydroelectric facilities had been built throughout Europe.
With Candlewood Lake and the Housatonic River differing in elevation by 200 feet, the Rocky River plant uses a single penstock, 1,000 feet long, to carry water downhill and lift it uphill. The Rocky River plant's pair of 8,100-horsepower pumps together are capable of lifting a million gallons every four minutes. At the time of their installation, they were largest of their kind in the world.
The Rocky River plant pumps water when the Housatonic River runs high. When the river runs low, water released from the lake to create electricity also raises the river level, helping generate additional power at two downriver plants. For every kilowatt-hour used to pump water, the three plants together can generate 1.3 kilowatt-hours.
For more information on civil engineering history, go to www.asce.org/history.
North Adams, Massachusetts
Constructed 1855-1876
When locomotive wheels roll through the Hoosac Tunnel, then order your ascension robes.
- Oliver Wendell Holmes
When first proposed in 1819, the Hoosac Tunnel seemed so logical. It would provide an efficient and direct route for the Boston and Albany Railroad, whose pathway meandered 20 miles along precipitous grades. Early proponents, however, could not have imagined that blasting a 4.75 mile tunnel through the Hoosac Mountain would require over 20 years of labor. The project took so long to complete that it was commonly referred to as "The Great Bore."
Work began in the 1850s, but financial troubles put the project on hold. By 1863, the state legislature took over the tunnel, but political issues, tunneling accidents, and drilling obstacles plagued the process. By 1868, only one-third of the tunnel had been excavated, so legislators sought private contractors to complete the job. They awarded the work to two highly regarded Canadian civil engineers, Walter and Francis Shanley. They quickly reorganized the work and introduced several innovations that allowed them to finally complete the work and, at the same time, significantly transform hard-rock tunneling techniques.
Facts
- The Hoosac tunnelers developed several innovations that marked the transition to modern tunneling methods: 1) a more effective process for pushing the tunnel advance, called the "center-cut system;" 2) the use of mechanized drilling equipment; 3) the use of high-powered explosives that resulted from advances in the science of chemistry; and 4) the use of electricity to detonate blasting caps, which in turn set off the explosive charge.
- With the center-cut system of heading advance, workers drilled holes in a three-stage sequence, and they loaded and shot each set of holes before proceeding to the next. The first set of holes, the center-cut holes, was placed near the center of the heading and was angled inward, so that a V-shaped area opened when they were shot. Rock blasted loose from two subsequent sets of surrounding holes fell could move into the center hole.
- The Hoosac tunnelers were successful in blasting with nitroglycerine, an explosive ten times more powerful than the black powder used previously. They established procedures for simultaneous detonation using an electric battery, a concept that had not previously been considered.
- Engineers devised an innovative 1,000-foot elevator to hoist rock from the central access shaft.
- Hoosac tunnelers experimented with steam-powered mechanical drills before successfully adopting the newly invented compressed-air Burleigh drill, which greatly improved productivity of the workers and the rate at which the tunneling progressed.
- Hoosac Facts: Over half a million pounds of nitroglycerine were used. Over 20 million bricks were used as lining to support the tunnel. Nearly 200 lives were lost during the two decades of hazardous construction. One million tons of rocks were removed to create the tunnel.
For more information on civil engineering history, go to www.asce.org/history.