An App to calculate cross section properties of various sections such as I Section, C Channel Section, Rectangular/Square Hollow Section, and Circular Hollow Section. If you just need to make some quick check on some cross section properties to ascertain strengths of some structure members, this app enables engineers to calculate section properties on the spot and enables engineers to make quick decisions whether the member size is ok or needs to be changed. For determining section properties of various sections in which this app provides for four types of shapes, namely, I section, C Channel Section, Rectangular/Square Hollow Section, and Circular Hollow Section, press the appropriate shape button at the main page and a tab will pop up for user to enter fields in yellow. After filling and editing the yellow cells, press Calculate - Cross Section Properties button and the cross section properties will be calculated and shown. Please ensure values entered in the yellow fields are in the correct units, so that it tallies with the units of the output calculations.