Some cool construction images:

Frankford EL Construction, 1913, 963 Beach Street Power Station
construction
Image by rich701
It looks like the steel beams are being enclosed in wooden forms to pour concrete to encase the beams.

The building under construction is the Power House on Beach Street. It would use steam turbine generators to produce AC power (13,200 volts at 25 cycles) to be sent to the Substations throughout the city where it would be converted to 600 volt DC to be used by the trains.
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This set contains 39, 8×10 inch glass negatives of the construction of the Philadelphia, Frankford Street Elevated Railroad in 1913. There are also several enlargements of areas that I found interesting. They were packed in a box and separated with paper with notes recorded on them. The paper had disintegrated and stuck to the emulsion side of the negatives. You will find many of the photos with this paper still stuck to the plates because I did not try to remove it for fear of damaging the photos.

Construction Worker
construction
Image by afflictedmonkey
A foreman on the construction site in Clementi Singapore. He looks so thoughtful. I wonder what he thinks. Heavily modified, colour corrections cropping. Sanyo C1 has so much noise…