Friday, March 9, 2018

Sometimes Construction Methods Don't Change

Image courtesy of
(place image here)

The photo below was taken in 1918-- when the first Calaveras Dam was being constructed.  These workers are excavating in the dam's foundation.  They're using using 4-mule carriages(4-horsepower) to do the job. Each power train (4-mule carriages) transport approximately 4 cubic yards per load at a speed of 1 to 2 mph. 

Fast forward a hundred years.  The photo below was taken at the new Calaveras Dam as workers were excavating the new core.  The workers in this photo are doing the same job with a Caterpillar Motor Scraper with a 450 horse power engine capable of carrying 30 cubic yards at a speed of 25 to 30 mph.

Although times have changed, sometimes the methods don't.  

See you around the valley!

Thursday, March 1, 2018

Carpenters Hard at Work

Today’s photos were taken by SFPUC photographer, Robin Scheswohl, inside the construction project to rebuild our Sunol Corporation Yard, which is located near the Sunol Water Temple.

While on site, Robin caught sight of a few of the approximately 11 carpenters who are working to build the structures for the new hub of East Bay water system operations for SFPUC staff. 

Here's a glimpse of their hard day's work.

Carpenter welding steel framing inside one of our buildings.

Here's one of our talented carpenter’s welding a piece of steel.

And, here she's installing the steel framing.

The Corporation Yard will be home to our Water Supply, Treatment East Bay Operations and Natural Resources Personnel. Improvements are expected to be completed by the end of 2018. During construction, the Sunol Water Temple will be closed to the general public.

See you around the valley!