Balboa Drafting Room / August 1914
Isthmian Register
Sheet No. 05 / Lock Elevation
Industrial-deco construction record

Locks Hold Empire

Blueprint navy, zinc machinery, and vermillion depth marks turn canal infrastructure into a sober technical monument.

Orthographic Sixteen-column sheet logic, measurement margins, and dashed centerlines.
Material Steel grey, concrete cream, deep tropical water, one precise lock mark.
Institutional Report-cover gravitas with tabular data and Bureau-style rulework.
Documentary Not triumphal: the record keeps labor, machinery, and authority in view.
Archive annotation: 5,609 recorded worker deaths remain part of the drawing.
Gatun chamber / transverse study

Concrete walls, water lift, vermillion datum

1914
IR
CHAMBER WIDTH / 110 FT DATUM LINE LIFT SECTION
Lift: 85 ft Water: Gatun Plate scale: 1:600