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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.
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
In a special summer UrbanPlan Scholars program, four teams presented their proposals for a six-acre parcel next to UH West Oahu. They had to address zoning requirements, affordable housing/workforce housing, rail/transit issues, agriculture, and energy.
UrbanPlan is a global competition run by the international Urban Land Institute. Hawaii schools have taken top honors in the global competition two years in a row, including Iolani School last month, and Iolani and Kalani two years ago.
Teams were made up of local high school students from Iolani, Kalani, LeJardin, MidPac, Punahou, and St. Andrews.
They conducted outreach to stakeholders and residents in West Oahu and found affordable housing to be the number one community need.
Ideas ranged from rooftop greenhouses and beekeeping to fully solar-powered facilities to integrating UHWO student and campus life.
Judges included Bob Harrison (FHB), Duff Janus (ASB), Brennon Morioka (UH), Mike Gabbard (Senate), Jim Houchens (Mitre), and Alana Kobayashi.
Bernice Glenn Bowers helped them plan for future high-tech industry in the area, doubled the size of the cash prize to $1,500.
Comments always appreciated, as long as you keep it clean - I love to hear your feedback! xx
I went for a visit to Derby for their comedy festival and to spend the weekend with Gemma.
Saturday morning we went to Belper to the river gardens and the horseshoe weir, which is an incredible piece of civil engineering!
The gardens are lovely and tranquil. It was a great little alternative to our usual trip to Dovedale - which we called off because the weather wasn't great.
Had a lovely morning though!
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.
Dernière tranche de l'aménagement du contournement de Malzéville entre la rue Pasteur et le viaduc Louis Marin.
Pays : France 🇫🇷
Région : Grand Est (Lorraine)
Département : Meurthe-et-Moselle (54)
Villes : Malzéville (54220) / Saint-Max (54130)
Durée des travaux : 2020 → 2021
Inauguration : 18/12/2021
Cavity wall construction at roof level containing roof trusses, gabble, wall plate, soldier course, building tools
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
Fall restraint bags ,should one of the men fall during the unloading of the concrete sections these bags will prevent a serious injury
Construction d'un parking.
P R É S E N T A T I O N
Construction : 2026 → 2027
Architecte : ABA Workshop
Fonction : Parking
Permis de construire : PC 54 395 25 00063
▻ Délivré le 12/11/2025
A R C H I T E C T U R E
Niveaux : R+4
Hauteur : 17,36 m
Surface de plancher : 6 416 m²
Superficie du terrain : 1 996 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 : Rives de Meurthe
Adresse : rue de Newcastle, 54000 Nancy
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
â–» 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
Poids en ordre de marche : 15 900 kg
Travaux de collecte et transfert des eaux de source du Reclus, Nabécor et du jardin botanique.
Aménagement d'une partie de la zone commerciale à Essey-lès-Nancy.
Pays : France 🇫🇷
Région : Grand Est (Lorraine)
Département : Meurthe-et-Moselle (54)
Ville : Essey-lès-Nancy (54270)
Adresse : rue Jean Ferrat
Aménagement : 2013 → 2014
Poids en ordre de marche : 22 250 - 23 750 kg
Démolition totale de 7 pavillons.
Pays : France 🇫🇷
Région : Grand Est (Lorraine)
Département : Meurthe-et-Moselle (54)
Ville : Nancy (54000)
Quartier : Haussonville - Blandan - Donop
Adresse : avenue de Brabois
Fonction : Logements
Déconstruction : 2024 → 2025
Permis de démolir n° PD 54 395 21 R0017
▻ Délivré le 05/11/2021
Surface des bâtiments à démolir : 1 727 m²
Superficie du terrain : 1 765 m²
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.
Démolition de l'ancienne CNS à Luxembourg Ville.
Pays : Luxembourg 🇱🇺
Ville : Luxembourg Ville (L-1218)
Quartier : Hollerich
Adresse : 125, route d'Esch
Fonction : Administration
Construction : 1982
Déconstruction : 2023 → 2024
SHON : 12 500 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.
Not the most common visitors to Saltley were class 37s, here 37092 is seen behind the depot building.
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 Ouest
Adresse : avenue du XXᵉ Corps
Reilly Contractors project for our client involved the extension of an existing sewer main to service a newly created subdivision.
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
Pre-cast concrete floor planks lifted into position with mobile telescopic crane. Note: the crane uses out riggers to provide stability when lifting heavy objects.
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
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.