24D-075 (3) c iST)
THAYER STREET ASSOCIATES, INC.
Ts General Contractors Residential Commercial lnstitu .
tr�i al
REC _
June 7, 2012
I 201
To: Louis Hasbrouck
Building Commissioner D s� 1060
Building NORTHAAhF PdA01060
Town of Northampton
City Hall, 210 Main Street
Northampton, MA 01060
Re: ACME Automotive
220 King Street
Northampton, MA
01060
Louis:
On June 4. 2012, I visited the above address to observe the progress of construction of this
project. Construction is underway to install a series of new Photo Voltaic Arrays on the roof of this
existing structure. The existing building's roof is constructed from several different construction
types. The north end roof is constructed form angle steel trusses at 7 - -0'` on center. The center north
area of this roof structure is composed of 2x8 rafters supported by interior knee walls above the
ceiling line and C.M.U. walls below. The center south roof structure is composed of steel columns
and built up nominal lumber beams. The South end of this structure has pre - engineered roof trusses.
The new photovoltaic arrays shall be installed at the north end and both of the center roof types.
At the time of my observation tradesmen from Northeast Solar were in the process of setting
connection anchors that will attach new aluminum tube array supports to the existing north roof
structure.
Previously, Northeast Solar had installed new flush 7 ' /z'" deep LVL beams sistered to the
existing 2x8 rafters in the roof system located at the center north of the building. The new LVL
beams are supported by nominal wood columns located in knee walls above the existing ceiling
joists. Below the ceiling joists there are C.M.U. bearing walls down to foundation. I observed that
the correct size of LVL's were used and that the nominal wood columns have been installed.
However, the tradesmen still needed to install vertical 2x squash block in- between the ceiling joists
at the locations of the new nominal wood columns. the C.M.U. I discussed this matter with both
Northeast lead installer and the owner of the building they indicated that these wood blocks would
be installed.
It is my impression that construction is proceeding as specified in the contract documents
produced by Silverhack Solar dated 4/2/12.
Please do not hesitate to contact me with any questions.
Sincerely, �� �� k
3
Thayer Street Associates, Inc. o ,"
v (r Q. 47430
Jacob F. Smith, P.E.
8 Coates Ave., South Deerfield, MA 01373 ` (4I3) -)C %� :� fax (4I3) 665 -1142 y thayerstreetassociates.com