It’s been a long time since many computers ran DOS or even Windows 3.1. Given the changes in hardware, it would be difficult to get most any recent PC to run one or both. Yet every time we have a major software upgrade, we lose some of the capabilities we had in the past. It’s … Continue reading Partying Like It’s 1987: Running WEAP87 and SPILE (and other programs) on DOSBox
Year: 2018
What We Need is a Light Trailer
In 1967 Vulcan opened a fabricating facility in West Palm Beach, Florida. Across the street from our new plant was “U and Me Transfer and Storage,” (see photo above) which we hired to move a lot of our machinery. We sent one of our supervisors to Florida to help set the shop up. The shop … Continue reading What We Need is a Light Trailer
Vulcan Hammers and the Gates Formula
For many years, Vulcan included Engineering News Formula charts and data in its literature. Vulcan dropped the EN formula out of its literature in the 1970's, for two reasons: the wave equation was in the ascendancy, and endorsement of the EN formula was an implied endorsement of the "bearing power" of the piles they drove, … Continue reading Vulcan Hammers and the Gates Formula
Visit to Zagorsk
In 1988, during Vulcan's first trip to the then Soviet Union, my brother Pem and I were given the chance to visit the Monastery of Trinity-St. Sergius, which was the administrative centre of the Russian Orthodox Church. This is located in the town of Sergeiev Posad, which was called Zagorsk during Soviet times. The trip … Continue reading Visit to Zagorsk
Anchored Sheet Pile Wall Analysis Using Fixed End Method Without Estimation of Point of Contraflexure
The monograph Anchored Sheet Pile Wall Analysis Using Fixed End Method Without Estimation of Point of Contraflexure, which appeared on this site very early in its existence (October 2007) has been very popular. The online routine described in the report, which you can use, is no longer available. The abstract for the paper is found here: … Continue reading Anchored Sheet Pile Wall Analysis Using Fixed End Method Without Estimation of Point of Contraflexure
Vulcan #1 Hammer in Ohio
Below are three photos taken of a Vulcan #1 hammer in Mentor, Ohio. It's in fixed leaders with a moonbeam-style spotter. The hammer was made in Chicago, which means that it's probably older than sixty years. Thanks to Ken Foster for sharing these great photos.
Compressible Flow Through Nozzles, and the Vulcan 06 Valve
Most of our fluid mechanics offerings are on our companion site, Chet Aero Marine. This topic, and the way we plan to treat it, is so intertwined with the history of Vulcan's product line that we're posting it here. Hopefully it will be useful in understanding both. It's a offshoot of Vulcan's valve loss study … Continue reading Compressible Flow Through Nozzles, and the Vulcan 06 Valve
Soviet S-834 Impact-Vibration Hammer: Calculations, Part II
The introduction to this series is here. The first installment of the calculations is here. Calculations of Main Details (Strength Calculations) Strength calculations assume that the inertial forces during impact are 150 times those of the weight. Rotor Shaft We checked the rotor shaft strength in the optimal mode, i.e., when the impacting force direction … Continue reading Soviet S-834 Impact-Vibration Hammer: Calculations, Part II
Soviet S-834 Impact-Vibration Hammer: Calculations, Part I
The introduction to this series is here. Moscow, 1963 Head of the Vibrating Machine Department L. PetrunkinHead of Vibration Machine Construction: I. FriedmanCompiler: V. Morgailo and Krakinovskii Specification The impact-vibration hammer is intended for driving heavy sheet piles up to 30 cm in diameter as well as concrete piles 25 cm square up to a … Continue reading Soviet S-834 Impact-Vibration Hammer: Calculations, Part I
Soviet S-834 Impact-Vibration Hammer: Overview
With this we begin a series of posts on the S-834 impact-vibration hammer, which the VNIIstroidormash institute in Moscow designed and produced in the early 1960's. With the revived interest in Soviet and Russian technology, it's a detailed look at how Soviet equipment designers came up with an equipment configuration. But it's also a close-up … Continue reading Soviet S-834 Impact-Vibration Hammer: Overview
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