Bryarly Lehmann asked me to check with Russ Boudreau about the conduits running near and into Blanchard for planning for the Blanchard project. Russ provided the memo appended below with the details of the conduit runs and their contents.
There are two major considerations:
There are a number of systems that run into MH2 which is near Blanchard. These systems are most of the campus communications infrastructure. This should be considered a dangerous area to work in. If any of these runs are damaged, it would cause extreme hardship for the campus.
The numerous fiber optic runs that pass by there are critical to the operation of the campus. These are not something that could be cut, rerouted, and spliced. Not only are there too many of them to do in any reasonable timeframe, but I would not want to introduce even the minimal optical loss of a even a high quality splice into these systems.
The other buildings are Wilder and Mead. These buildings will need to have new fiber run to them for the Blanchard construction since, as I understand it, the fiber into that building will need to be removed.
Each of these buildings has a 12/12 fiber count. How we get to these buildings could use some additional discussion. One consideration would be to beef up our fiber count to Pratt to better accommodate the South Campus (we are actually a bit short of fiber to that end of campus) and then to feed Mead and Wilder from the runs to Pratt.
Here is the memo of Russ Boudreau in its entirety....
MOUNT HOLYOKE COLLEGE
DEPARTMENT OF BUILDINGS & GROUNDS
DATE:November 14, 2000
SUBJECT:Telecommunications / Data implications regarding the Blanchard Renovation
In response to our conversation yesterday I have compiled the following documentation of infrastructure related to Phones, Data, CATV, Alarms, and Energy Management as they exist in the duct bank system running through MHC:TMH- 2. TMH-2 is the telcomm manhole located north west of the Blanchard Hall. Additionally, I include the systems that pass through Blanchard in order to service both Wilder Hall and Mead Hall.
Although MH2 is just outside of the new Blanchard construction (though just barely), there are 12 4-inch conduits that will be inside the new north addition. Since these are currently about 4-6 feet under ground, in the new construction, they will be well above grade for the lower level floor.
Ducts related to TMH-2 (near Blanchard):
Ten (10) 4" ducts run easterly from TMH-1 (near Skinner Hall) to TMH-2 (near Blanchard)
Twelve (12) 4" ducts run easterly from TMH-2 to TMH-3 (south of Ciruti)
Two (2) 4" ducts run northerly from TMH-2 to Porter Hall
Four (4) 4" ducts run southerly from TMH-2 into Blanchard Hall basement.
Four phone cables run through TMH-2 connecting the Central Switch to many campus buildings. These cables consist of a 100 pr., a 500 pr., a 600 pr., and a 1800 pr. cable.
These cables provide phone service to:
Porter, Safford, Brigham, Eliot, Blanchard, Wilder, Mead (partial), Skinner, Rocky, Abbey/Buckland, Lab Theatre, Gorse, Mary Woolley, Dickinson, 73 College St., 57 College St. 1 Faculty Lane, 5 Faculty Lane, Mary Lyon, Williston Library, Dwight, Shattuck, Carr, Clapp, Art, Greenhouse, Reese, Pearsons, P.Annex, Newhall, Merrill, Pres. House, Observatory, and some lines to the Village Commons.
Fourteen fiber jackets with varying numbers of fibers per jacket enter TMH-2 from TMH-3. The fiber count varies from 18 mulitmode to 60 singlemode fibers per jacket.
Of these, three jackets service Porter (subsequently Safford and Brigham), and Blanchard.
Two jackets cross from Porter through TMH-2, then through Blanchard, to provide service to Wilder and Mead.
Eleven jackets pass through in an westerly direction to provide service to the following buildings:
Skinner, Rocky, Abbey/Buckland, Mary Woolley, Dickinson, 73 College St., 57 College St., Mary Lyon, Williston Library, Dwight, Pearsons, P.Annex, Newhall, Merrill, Pres. House, Observatory.
Eight cables of varying size (12 pr. – 50 pr.) pass through TMH-2 to provide control and alarm services to:
Porter, Safford, Brigham, Blanchard, Wilder, Mead, Skinner, Rocky, Abbey/Buckland, Lab Theatre, Gorse, Day Care, Mary Woolley, Dickinson, 73 College St., 57 College St. 1 Faculty Lane, 5 Faculty Lane, Mary Lyon, Williston Library, Dwight, Shattuck, Pearsons, P.Annex, Newhall, Merrill, Pres. House, Observatory, and some lines to the Village Commons.
Radio station remote transmitter cable:There are two shielded two-pair cables that run from Blanchard through TMH2 westerly to TMH1 and on to Mary Woolley. These control the radio station transmitter.
Off Premise Utilities:
In addition to Mount Holyoke College infrastructures, two cable based utilities provide the campus service with fiber based systems that utilize the duct bank passing through TMH-2. These include fiber service from AT&T for phones and CATV.