To enable construction to go ahead without disruption to train services, temporary steel protection decks were lifted into place by crane. Ahead of this temporary work being installed, I was able to produce these 2D and 3D plans of how the temporary work would interact with the existing conditions, and also with the future construction. 
Using the sketch below, I designed the crane rigging system which would allow installation of the canopy shown in green, sliding under the existing steel gantry shown in yellow. Combining this sketch with actual pictures of the site made the construction execution procedure easy to understand for all parties involved.
Overhead power lines are a constant safety hazard when working with electric trains. In order to determine whether certain crane activities would be possible while maintaining safety clearances from overhead wires, I took topographical survey data, crane technical data, and my own field measurements and produced sketches like the one below to distribute to the construction team.
Quantity takeoffs were made much simpler and clearer by showing them on sketches like the one below. This sketch shows the extent of different types of coping to be replaced.

Every sketch I produce carries a consistent title block with a drawing number and revision number, which are all kept in a register maintained for good document control.
CAD Drafting
Published:

CAD Drafting

Folio of AutoCAD drawings in 2D and 3D for construction.

Published: