“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

Vulcan 305 and 306 Hammers: Specifications and Information

No history of the Warrington-Vulcan hammers would be complete without mentioning the 305 and 306 hammers.  The primary purposes of these designations was to harmonise them with the way Vulcan had numbered its larger hammers for many years, although these hammers incorporated changes such as cables and the possibility of Vari-Cycle II. The first 306 … Continue reading Vulcan 305 and 306 Hammers: Specifications and Information

Vulcan 010 Hammer: Specifications and Information

The 010 is one of Vulcan's more popular hammers.  For many years it was the largest Warrington-Vulcan hammer in the line until the 012.  It was an upgrade from the 0R hammer, raising the ram weight from 9,300 lbs. to 10,000 lbs.  Another general arrangement of the 010 with the steam belt are shown below. … Continue reading Vulcan 010 Hammer: Specifications and Information

Driving Speed That Makes Footage Records

Above, an ad for the Warrington-Vulcan hammer, as featured in Engineering News-Record, 1926.  Note that there are two distributors listed: one in California and the venerable Woodard Wight in New Orleans, which (with its salesman Herman Hasenkampf) went on to represent Vulcan in the Gulf during the offshore years. Note also that Vulcan even at … Continue reading Driving Speed That Makes Footage Records

Vulcan #0 Hammer: Specifications and Information

First produced in 1912, the #0 hammer, although not the first Warrington-Vulcan hammer, is probably, in its own way, the most pervasive in its influence on the development of Vulcan's--and other--product line. The main Chicago general arrangement is above: others are below:   Both the design, frame and accessory configuration of the #0 hammer were … Continue reading Vulcan #0 Hammer: Specifications and Information