...
The goal of the Automated Materials List is to calculate the volume of concrete needed, areas of components that will be made out of bricks (these areas can be divided by the area of one brick to see how many bricks are needed), lengths and sizes of pipes, amount number of plastic sheets for the lamella, etc. The final Materials List should act as a rough outline for on-site construction and facilitate the job of the engineers and planners. This program requires inputs from the user and from the design assumptions to compute the necessary calculations. Currently, the List calculates the total materials needed for construction and various dimensions for different components of the plant.
...
To see how the number of baffles per channel is determined and why there are upper and lower baffles, please consult the flocculator algorithm. The volume needed (of plastic or concrete, depending on the size of the plant) for the the baffles is under the diagram below.
The total surface area of the flocculation baffles can be found be by dividing the total volume of all the flocculation baffles by the thickness of one flocculation baffle.
...
The wall and floor volumes of the inlet and exit channels similarly depends depend on their respective length, widthwidths, height, and thickness:
...
The inlet and exit channels are attached to tanks control boxes containing the weirs that connect to the sedimentation tank. Since the plant weirs are being recoded, these equations will change in the future, but for now, these dimensions were calculated to be built around the nominal diameter of the plant weir and the spacing required between the elbows.
The total length of weir pipes in the inlet and exit channel tanks boxes is derived from the user-input values that are found upon calculating the necessary height of the pipe for the determined water velocity. This height multiplied by the number of weir pipes yields the total length of pipe necessary.
The volumes of the inlet and exit channel tanks boxes are determined by finding the area of the floor of each tank and the area of the walls of each tank. These are then multiplied by the thickness of the channel wall, or T.ChannelWall. The total volume of each tank is equal to the volume of the walls plus the volume of the floor. 
...
The necessary output to construct the plate settlers is the total number of corrugated sheets usedneeded. This is determined by calculating the total number of plate settlers, how many plate settlers would fit on a given sheet of plastic, and and dividing to find the total number of required sheets.
...
The plate settlers are supported by a sedimentation plate frame constructed of PVC pipes running across the width and length of the sedimentation tank. The length of PVC pipe required to construct this module was determining determined using the dimensions of the sedimentation tank and the center-to-center distance between each parallel pipe.
...