Pneumatic Cyclic Loading Upgrade for Test Frame

We needed to run cyclic loading for a project. It uses an electo-pneumatic transducer with an input of 0-10 volts with a pnuematic cylinder with a spring return, along with a wave form generator to make it cycle. We did

40” by 40” Custom Pneumatic Test Press

Here is a custom test press I made from scratch using 5 inch box steel with 1/4 inch walls on it. First I cut up all of the steel using a band saw. I made the initial base by making

Slide Hammers

Over they years I have made several slide hammers to compact soil. I usually use a piece of 2 inch round stock and drill a center hole in it with either a lathe or mill oversize to whatever rod I

Large Soils Shear Box Modification

We decided to add 2 inches to the bottom part of the large soils shear box and 2 or 3 inches to the top box. We ordered the steel and I had to drill and tap holes to attach the