COMPUTING saved me -
eyes and back would have put me out of business long ago, on the old drawing board!
Now it's an electronic world -
CAD (computer drawing) - 2D, 3D BIM (Building Information Modelling)
WUFI - Simultaneous Heat and Moisture - Diffusion, Air-leakage, Condensation
Therm - Heat Transfer - Thermal Bridging
PVGIS - Solar Energy Capture