Butterfly Valve Operating Torque
Itemized operating-torque calculator for concentric (resilient-seated) butterfly valves: seating + bearing + packing, with manufacturer calibration and actuator sizing. Built around the AWWA M49 component method.
More Engineering
See all →Vault Designer
Precast concrete utility vault configurator: dimensions and joint profile drive concrete volume, weight and pricing — the top slab and its access opening reconfigure live in 3D.
Smart Home Configurator
The smarthome feature model from Felfernig et al. (ConfWS 2025) as a live configuration: optional features exist by rule, the alarm pulls its required motion sensor in automatically, and the hub is selected from a ladder.
Commercial Steel Door Configurator
Hollow-metal door configurator: single or pair, gauge, core, vision lites and hardware — hinge counts by height rule, conditional panic bars, live 3D, and a table-driven price.
Hydraulic Cylinder Configurator v1.2
Engineer-to-order hydraulic cylinder: bore, stroke and pressure drive rod buckling, wall thickness and seal selection — and the mounting style physically reconfigures the 3D model. (v1.2: real mass-based costing — quote model on page 2, margin health indicator, costed BOM quote sheet)
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