Making an Impact on Sheet Piling

Although the classic Warrington-Vulcan and Super-Vulcan hammers were not the best suited to interface with sheeting, doing so was very common for these versatile hammers. Here are some examples broken down into two parts: the sheeting layouts and the cap configurations. These are from the years Vulcan was in Chicago, before it moved to Chattanooga … Continue reading Making an Impact on Sheet Piling

Vulcan Never Believed in a “Throwaway Culture”

There's finally some meaningful pushback against this: But significant amounts of that waste could be avoided through repairs. According to a study by the French Environment and Energy Management Agency, only 40% of electronics breakdowns in France are repaired. But surveys have found nearly two-thirds of Europeans would rather repair their products than buy new … Continue reading Vulcan Never Believed in a “Throwaway Culture”

Driving Concrete Piles Wild

Driving piles wild, i.e., without any leader of any kind, is something that takes a great deal of skill and forethought by the contractor. Like piles driven with a stub leader, it is necessary at least to use some kind of template to insure that the pile is on location and in alignment, and also … Continue reading Driving Concrete Piles Wild

Leaving the Derrick Barge Behind

Above is a photo of one of Ingram Construction's barges in the wake (literally) of the crew boat carrying Vulcan's representative (probably Jess Perry) away after a field service trip. Vulcan developed its field service capabilities mostly in response to its customers in the Gulf of Mexico and elsewhere, and that frequently entailed long field … Continue reading Leaving the Derrick Barge Behind

Chabahar: a Vulcan “Almost” Becomes a Point of Contention with the Suez Canal

The Iranians want to bypass the Suez Canal using their port at Chabahar: The Iranian Chabahar Free Trade Zone Organization announced July 5 that trade connections to Mumbai, Hamburg and St. Petersburg will be made through Astrakhan (in Russia), Anzali and Chabahar (in Iran) and Nhava Sheva (in India) instead of the Suez Canal. This raises questions … Continue reading Chabahar: a Vulcan “Almost” Becomes a Point of Contention with the Suez Canal

“Offshore pile driving is a high-risk activity as delays can be financially punitive”

I've had experience on both the practical and "academic" sides of offshore pile driving and installation, but I've seldom seen a blunter and more accurate summary of the topic in the published literature than what's above.  Vulcan certainly experienced that during the offshore years. The entire paper can be obtained here.  The complete abstract is … Continue reading “Offshore pile driving is a high-risk activity as delays can be financially punitive”

Vulcan 060 and 360 Hammers: Specifications and Information

The success of the 040 was soon left behind by the deeper and deeper water conventional platforms were being installed into.  That in turn called for larger hammers, and Vulcan rose to the occasion with the 060.  The first 060 was built for J. Ray McDermott and delivered in the summer of 1968, a summer … Continue reading Vulcan 060 and 360 Hammers: Specifications and Information

Soils in Construction (Sixth Edition) Now Available — vulcanhammer.net

It’s here a last: Soils in Construction, the Sixth Edition, now available from Waveland Press. Many of you (and especially those who are familiar with the companion site vulcanhammer.info) are aware that I’ve spent much of my career in geotechnical engineering and deep foundations dealing with contractors. As such I am both sympathetic with their […] … Continue reading Soils in Construction (Sixth Edition) Now Available — vulcanhammer.net

STADYN Wave Equation Program 8: Effective Hyperbolic Strain-Softened Shear Modulus for Driven Piles in Clay

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It’s been a while, but we hope it’s worth the wait: the monograph Effective Hyperbolic Strain-Softened Shear Modulus for Driven PIles in Clay is now available.  It was presented at the Research Dialogues for the University of Tennessee at Chattanooga 9-10 April 2019.  The abstract is as follows:

Abstract: Although it is widely understood that soils are non-linear materials, it is also common practice to treat them as elastic, elastic-plastic, or another combination of states that includes linear elasticity as part of their deformation. Assuming hyperbolic behavior, a common way of relating the two theories is the use of strain-softened hyperbolic shear moduli. Applying this concept, however, must be done with care, especially with geotechnical structures where large stress and strain gradients take place, as is the case with driven piles. In this paper a homogenized value for strain-softened shear moduli is investigated for both shaft and toe resistance in…

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Vulcan #3 Hammer: Specifications and Information

The #3 was one of the early (pre-1900) Warrington-Vulcan hammers, along with the #2 and #1.  A general arrangement is shown above; specifications are below. The #3 found itself involved in some important projects, including the construction of the original Panama Canal, as evidenced by the memo below. The #3 fell out of favour to … Continue reading Vulcan #3 Hammer: Specifications and Information