02 / FEATURE INSPECTOR
Read the drawing, feature by feature.
Select an outline above or choose a feature to see its mapped dimensions, interpretation and evidence limits.
GEORGETOWN · JELUTONG · PENANG
The whole site.
With the evidence in view.
Explore the reconstructed layout of Georgetown Sewage Treatment Plant PEG227. Compare our drawing with the actual Google Maps satellite screenshot, then inspect the sources behind each interpretation.
Reference reconstruction
Public map outlines and historical engineering sources. A verified current as-built drawing has not been recovered.
Browse the evidence01 / DRAWING WORKSPACE
Satellite & drawing
Select an outline to inspect its evidence
Actual Google Maps screenshot · captured 25 Oct 2026 · imagery capture date unknownOpen Google Maps ↗
Mapped water outlineMapped building / tankInferred historical slotPublic mapped boundaryH01–H12 = historical positions
03 / DIMENSIONS & HEIGHT
What the measurements establish
- Lengths & widths
- Derived from mapped outlines in metres. Water polygons describe mapped water edges; roof polygons describe mapped roofs.
- Historical tank groups
- 2009 text reports each twin group as 90 × 60 × 7 m. A later 80 × 60 m statement conflicts. These are historical figures.
- Current heights & depths
- Unverified. The reported 7 m has no defined datum and does not establish water depth. CAD Z = 0 is the drawing plane.
04 / ALIGNMENT & ACCURACY
Check the match yourself
Toggle the overlay to compare each edge with the photograph. The overlay uses the observed north-up map centre and zoom, with visual checks at basin corners and digester centres.
A close screen match does not certify ground dimensions. Roof displacement, source age and edge identity remain uncertain. Esri’s reported 8.47 m positional metadata is not a length tolerance.
View screenshot registration ↗Read measurement audit ↗05 / TAKE THE DRAWING WITH YOU
Working files, with provenance.
Current vector revision: R1.3-reference. The six-page PDF remains the previously checked R1.2 edition.
Historical whole-site drawings, engineering papers, operator records, aerial imagery and site photographs — together in one evidence library.
46 sources · 64 previews ↗