Save, organize and restore your calculations.
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Transparent technical documentation explaining governing equations, boundary conditions, and design criteria used across our tools.
The twenty-one lifecycle stages: start a project before any calculation, define components stage by stage, run the calculators that apply to them, review quantities into the bill of quantities, apply your own rates — and what the workflow explicitly does not calculate.
The twelve stages from requirements to engineering report: what you enter, what the engines calculate, where assumptions and missing inputs surface, and how the interactive diagram, stream table, equipment, BOQ and report stay connected to one engineering model.
A disciplined way to compare two design options on embodied carbon without assuming the numbers: user-supplied emission factors, option totals in kg/t CO₂e, per-m² intensity, and the honest limits of screening.
A worked method for single-line water hydraulics: required pipe size from flow and velocity, standard diameter selection, Reynolds regime check, Darcy–Weisbach friction, total dynamic head, and pump power — with a full numerical example.
An engineering breakdown of concentration polarization, precipitation limits of sparingly soluble salts (CaSO₄, BaSO₄, SiO₂), and maximum recovery optimization in single vs staged RO trains.
Mathematical derivation of nominal rebar linear mass from steel density (7850 kg/m³) and bar diameter, with comparative cross-tables for ASTM and metric standards.
Evaluating friction factor formulations, Swamee-Jain approximations, and temperature-dependent kinematic viscosity corrections for turbulent water flow.