The purpose of this page is to provide a repository for documents,
links and other materials for designers.
Sun Position Calculator. Copy of my "Sunpath" program (zip file).
Provides Sun
position for daylight hours on 22nd of the month for 12 months. Useful
for designing shading devices and the like.
This
is compiled VB for DOS, and will run on anything capable of running the
Dosbox emulator. My program is long past its use-by date;
the same site
specific information is now easily obtained from the website
SunEarthTools.com, that produced this image:

Sunpath notes.
Readme file for Sunpath.
Geoscience Australia Magnetic
North calculation.
Acoustic
Calculator.
Written in Javascript - calculates attenuation of sound with distance.
Acoustics notes.
Guide to using the acoustic calculator, together with typical values,
EPA requirements etc.
Slope
Calculator. Calculates percent from rise / run, percent from
degrees.
Advice. Collection of drawings - corner truncations, sight lines, QDC '9m Rule', floor to ceiling heights, drainage.