I am trying to get the word out about an IPhone/IPad App I created.
It is called RescueCalc. It is on the App Store https://itunes.apple.com/us/app/rescuecalc/id618407837?mt=8
It is a simple calculator for finding the weight of concrete and steel. It has shapes such as Square, Pipe, Trapezoid for concrete and Beam, Plate, Pipe and Tubes for Steel.
You can choose Imperial or Metric for your weight calculations.
I wrote it to be "field friendly" with a simple user interface.
Sorry for the double post. I put this up on the comment wall too.