Is the Best Place to Run Old Windows Software…on Linux or a Mac?

A few years ago I put out an article entitled Partying Like It’s 1987: Running WEAP87 and SPILE (and other programs) on DOSBox, where I describe the use of DOSBox in running engineering software (and also Windows 3.1.)  A great deal of engineering software developed in the DOS era can still be used for engineering design … Continue reading Is the Best Place to Run Old Windows Software…on Linux or a Mac?

STADYN Wave Equation Program 11: Application of the STADYN Program to Analyze Piles Driven Into Sand — vulcanhammer.net

The newest update for the STADYN research project is available: Download Application of the STADYN Program to Analyze Piles Driven Into Sand The abstract is as follows: Abstract: The STADYN program was developed for the analysis of driven piles both during installation and in axial loading. Up until now the test cases used were in […] … Continue reading STADYN Wave Equation Program 11: Application of the STADYN Program to Analyze Piles Driven Into Sand — vulcanhammer.net

Picking Up Concrete Piles for Driving

One of the concepts students in geotechnical engineering courses seem to have the most trouble with is estimating stresses in concrete piles during pick-up and setting them in place to drive.  The basic problem is that it's sometimes hard to get our heads around the analytical simplification of the actual situation.  Let's start by looking … Continue reading Picking Up Concrete Piles for Driving

A Sea Fight in a Fog: Revisiting the ASCE Controversy about Dynamic Formulae

It's always good for geotechnical professors and practitioners alike to think about where our industry has been and where it’s headed.  A little while back three of our most eminent people (Garland Likins, Bengt Fellenius and Robert Holtz) came together and wrote an excellent piece for the 2Q 2012 issue of the Pile Driver (the … Continue reading A Sea Fight in a Fog: Revisiting the ASCE Controversy about Dynamic Formulae

Partying Like It’s 1987: Running WEAP87 and SPILE (and other programs) on DOSBox

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

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

TAMWAVE: Cavity Expansion Theory and Soil Set-Up

One of the things that was attempted in the TAMWAVE project is the use of cavity expansion theory to estimate soil set-up in cohesive soils. Doing this, however, brought some complications that need some explanation. Cavity expansion theory is basically the study of what happens when one body expands inside of another. When this takes […] … Continue reading TAMWAVE: Cavity Expansion Theory and Soil Set-Up

Relating Hyperbolic and Elasto-Plastic Soil Stress-Strain Models

It is routine in soil mechanics to attempt to use continuum mechanics/theory of elasticity methods to analyse the stresses and strains/deflections in soil. We always do this with the caveat that soils are really not linear in their response to stress, be that stress axial, shear or a combination of the two. In the course […] … Continue reading Relating Hyperbolic and Elasto-Plastic Soil Stress-Strain Models

TAMWAVE: Pile Toe Resistance, and Some More on Pile Shaft Resistance — vulcanhammer.net

With this post we begin to discuss our “other” project: the TAMWAVE project. It’s been around a long time but is now being revised. The concept is to afford students a method of getting acquainted with several aspects of computer-aided driven pile design, including the following: Estimating axial capacity of the pile; Estimating the axial […] … Continue reading TAMWAVE: Pile Toe Resistance, and Some More on Pile Shaft Resistance — vulcanhammer.net

Drivability of Vulcan Hammers and Other Pile Driving Equipment

This section of vulcanhammer.info is about the drivability and performance of pile driving equipment in general and Vulcan hammers in particular. It's divided into several sections: Dynamic formulae: the original method of relating hammer performance to pile capacity and resistance Before Wellington and ENR: Early Dynamic Formulae, and Sanders' Formula The Engineering News Formula, and Its Treatment … Continue reading Drivability of Vulcan Hammers and Other Pile Driving Equipment