How to show Hidden System Files and Folders on Flash Drives

Computer viruses are programs that copy themselves automatically and may destroy
your files. One of the effect of a virus on a usb flashdrive is turning all its contents
to Protected Operating System Files so that if you insert it to a computer, you can't
see any files inside because it is hidden. Showing the hidden files on the folder
options is not enough, you have to uncheck the 'Hide Protected System Files' option
as well. But this will not solve the problem. You can only see your files temporarily.
To overcome this, follow the instruction below.

1. Open command prompt.
2. Type:    attrib -S -H G:\*.* /S /D /L

* This will unset the attribute "Protected Operating System Files" on the files from a usb
  flashdrive on drive 'G:'.

Structural analysis for vertical concrete canal linings.

Assumptions:
1. No water inside the canal and the embankment outside
is up to the top bank of the canal.
2. Soil is saturated.

Procedure of analysis:

1. Compute for pressure at canal bottom using the formula:
         (1-sin(A))
Ph = ----------- x SoilWeight x CanalHeight
 (1+sin(A))
A = Angle of internal friction of soil

Rankine's Earth Pressure Theory

Rankine's earth pressure theory is widely used in analyzing the lateral pressure exerted by earth to a vertical wall (e.g. Retaining Wall) as long as it meets certain assumptions used in this theory.
Assumptions are the wall should be vertical and the friction resistance between the wall and the soil is neglected and the soil should be granular.

RC Beam Design

Here is a simple excel application for designing a reinforced concrete beam. This
uses USD.

Download RCBeamDesignSinglyReinforced.zip

Elevated Flume Design

This is a console application I wrote for the design and analysis of elevated flumes (used for conveying water). This has 3 parts,
1. Hydraulic Analysis
2. Structural Analysis and
3. Stability

Please post questions about the program if there is something you couldn't understand while I'm working on the documentation of the application.

Here is a sample screenshot of the project:

Download ElevatedFlume.zip

Inverted Siphon

This is a program I made for designing siphons with rectangular sections.
Kapain nyo na lang muna habang di ko pa nagagawa documentation.

Screenshots:

Android Vertical Drop Designer

This tool is just a designer for vertical drop structures for irrigation canals.
This is developed for android devices running android 2.2 and up.
Click here to download
Then click start downloading from sendspace.