Design of Reinforced Concrete Staircase. Staircase Structural Design. Detail of Roof Truss. Design of Pile Cap Excel Sheet. Combined Footing Design. Concrete Tunnel Design. Checklist for Painting works Excel Sheet. Checklist for Pre-Concreting Excel Sheet. Checklist for Plastering. Checklist for Masonry. Design of Retaining walls against overturning and sliding forces.
Checklist for Concreting. Checklist for Reinforcement. Checklist for Shuttering Excel Sheet. Checklist for Anti Termite Treatment. Checklist for PCC. Checklist for Excavation. Checklist for Boomi Pooja. Calculate Quantities of Materials for Concrete. Table 1, shown below, gives typical values for the design parameters, detention time and horizontal velocity, as well as typical added length for. Table 1. A sutro weir is typically used as the exit from a horizontal flow grit chamber, because it maintains a constant horizontal velocity through the grit chamber.
The diagram below shows the shape of a sutro weir, as plotted for an example horizontal flow grit chamber. This Excel spreadsheet can be used to calculate the required tank volume, tank length and tank depth,.
This Excel spreadsheet, as well as others for water and wastewater treatment calculations, is available in either U. L, Stensel, H. Bengtson, Harlan H. To obtain a Wastewater Metal Preciptitation Spreadsheet , click here to visit our spreadsheet store.
This Excel spreadsheet has worksheets for calculating equilibrium values and design values for precipitation of seven metals from wastewater, based on user input values for several parameters. You can buy a convenient metal hydroxide preciptiation spreadsheet for a very reasonable price. Read on for background information about a Wastewater Metal Precipitation Spreadsheet.
To make calculation for metal hydroxide precipitation from wastewater, data for the solubility of that metal vs pH can be used to obtain an equation for the metal hydroxide solubility as a function of pH. An example graph for zinc solubility vs pH is shown below. Using an equation like that shown on the graph, equilibrium values can be calculated for effluent metal concentration, chemical usage and solids production.
Application of a safety factor will give design values for effluent metal concentration, chemical usage and solids production. An example wastewater metal precipitation spreadsheet is partially shown in the image below. This Excel spreadsheet can be used to calculate equilibrium and design values for effluent metal concentration, chemical usage and solids production. References :. To obtain a Wastewater Screening Calculations Spreadsheet , click here to visit our spreadsheet store.
This Excel spreadsheet has worksheets for calculating the head loss through a bar screen, head loss through a fine screen, estimated daily volume of screenings collected for a fine screen and for a bar screen, based on user input values for several parameters. You can buy a convenient wastewater screening calculations spreadsheet for a very reasonable price.
Read on for background information about a Wastewater Screening Calculations Spreadsheet. For information about making calculations for wastewater screening, including bar screens and perforated screens also known as fine screens. The equation used to calculate the head loss across a bar screen is:. The liquid velocity in the approach channel can be calculated using the Manning Equation and the liquid velocity going through the screen can be calculated if information about the number of bars, space between bars, channel width, and flow depth are known.
An equation for calculating the head loss across a fine screen is also available as a function of the flow rate through the screen, the discharge coefficient for the screen typically 0. An example wastewater screening calculations spreadsheet is partially shown in the image below.
This Excel spreadsheet can be used to calculate the head loss across either a bar screen or a perforated screen and an estimate of the daily screenings volume for either a bar screen or a perforated screen.
This Excel spreadsheet is intended for making design calculations for pre-anoxic denitrification and enhanced biological phosphorus removal in a CMAS completely mixed activated sludge system. The primary effluent goes first to an anaerobic tank, then to an anoxic tank and then to the aerated activated sludge tank. The recycle flows include an internal reycle IR flow from the aeration tank effluent to the anoxic tank, and recycle activated sludge from the secondary clarifier underflow to the anaerobic tank.
An example EBPR design calculations spreadsheet is partially shown in the image below. This Excel spreadsheet can be used to calculate the required anaerobic tank size, and calculate the phosphorus removal rate and sludge production rate. This Excel spreadsheet, as well as others for wastewater treatment process design calculations, is available in either U.
This Excel spreadsheet is intended for calculating design parameters such as total plate area, plate width, module width, length, and height, and HRT for flow between plates for a lamella inclined plate clarifier, based on user input values for several parameters. You can buy a convenient lamella inclned plate clarifier design spreadsheet for a very reasonable price. For information about making calculations for an activated sludge secondary clarifier, see the post Activated Sludge Secondary Clarifier Design Spreadsheet , Instead of an activated sludge secondary clarifier, this post is about a lamella inclined plate clarifier design spreadsheet.
An inclined plate lamella clarifier obtains more settling area for the same footprint by using a set of inclined plates in the clarifier as illustrated in the following schematic diagram for a lamella inclined plate clarifier. Potential values for some of the design parameters for a lamella inclined plate clarifier are shown in the following table:.
The source for the values in the above table is: www. An example Lamella Inclined Plate clarifier design spreadsheet is partially shown in the image below. This Excel spreadsheet can be used to calculate the required plate area and module dimensions based on several user input values. These Excel spreadsheets are available in either U. These spreadsheets come with a wide array of built-in formulas that auto-complete after you fill out the first few rows.
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