This is a custom spreadsheet for industrial water supply calculations with up to 50 equipment feeds.

This is a custom spreadsheet to estimate the rate of natural gas leakage through a small slit in the pipe wall

This custom spreadsheet calculates the rate of heat loss in Watts/ft from a pipeline based on user input values for the desired maintenance temperature, min. design ambient temperature, inside diam of insulation, outside diam of insulation, thermal conductivity of the insulation, and % safety factor.

This is a custom spreadsheet update to estimate the vapor composition above the liquid in a solvent tank.

This is an update to a Spa-Pool Hydraulics Workbook

This is a custom spreadsheet for making calculations of cooling rates for a hydronic cooler including calculation of the cooling rates in Btu/sq ft/hr and calculation of the cooling rates for a metal plate attached to the pipes and a thin layer of drywall attached to the front of the plate.

This spreadsheet calculates the flow coefficient for an adjustable choke valve and also calculates the liquid flow rate through the valve for specified pressure difference and liquid specific gravity.

This custom spreadsheet is set up to calculate an estimated propane gas leakage rate through soil above a pipeline due to a hole in the pipe.

This custom spreadsheet can be used to calculate an estimated flow rate and velocity of copper concentrate fluid through a small hole in a pipe wall.

This spreadsheet carries out calculation of the required volume, cross-sectional dimensions, and length of an oxidation ditch based on user information about the design wastewater flow rate, values of wastewater design parameters, and cross-sectional configuration.  The calculations use S.I. units.

A custom clarifier spreadsheet.

This is a custom spreadsheet for making overall solids mass balance calculations for an activated sludge process.