Welcome to the Mobile Home Page of
Click link above for full web site.
R. Bouwmeester & Associates, a civil engineering firm, provides
specialized sun and shadow position modeling services related to
collision and crime scene reconstruction,
forensic photo/video analysis, and
urban development, site planning and building design projects.
The modeling is carried out through the use of a computer model developed by Ralph Bouwmeester
which simulates the daily "motion" of the sun and calculates its position in the sky
relative to any location on earth at any time - past, present or future.
In the collision and crime scene reconstruction fields we are called upon
to confirm historical sunrise and sunset times,
to determine the sun's position relative to the field of view of a driver (or pedestrian),
to determine the limits of shaded vs. sunlit areas, and
to provide general input related to glare, blinding, contrast, shadowing, visibility, ambient lighting, etc.
at which a scene can be visited and photographed
under similar lighting conditions (e.g. including daylight, dawn and dusk).
to determine (or confirm) the date and time they were taken.
Alternatively, if the date and time are known, we can narrow down the location
where the photo or video may have been taken.
to prepare shadow impact studies, solar access studies and daylighting analyses.
Shadow impact studies include
technical reports and drawings showing the predicted shadow patterns of proposed building projects.
From these we determine how much sunlight
will be lost in specific locations as a result of the building project.
Solar access and daylighting studies allow architects and planners to maximize exposure to sunlight
in specific areas within a building (e.g. sunroom, living room, etc.) or on a site (e.g. pool, patio, etc.).
appreciate our prompt and personal responses.
Do you need to know a historical sunrise/sunset time for a collision investigation,
or a future sunset time for an outdoor wedding?
We would be happy to provide the answers... free.
Mr. Bouwmeester provides expert witness testimony in the field of sun position modeling.
He has appeared as an expert witness before criminal court, civil court and land use tribunals (Ontario Municipal Board) in
vehicle collision cases, criminal investigations, and land development application hearings.
The firm provides
opinion letters, technical analyses and reports, and CAD drawings
(including plan views and 3D driver's eye perspectives).
Bouwmeester, P. Eng.
the information contained within these World Wide Web Pages is