ASHRAE IES NSPE
CLAITMAN
ENGINEERING ASSOCIATES, INC.
-Consulting
Engineers-
OFFICIAL ADDENDUM NO. 1
January 10, 2008
to the
BIDDING and CONTRACT DOCUMENTS
for
RENOVATION OF HVAC
GENERAL, HEATING AND ELECTRICAL WORK
at
CLARION,
PROJECT NO. CL-627(.1)(.2)(.4)
TO ALL BIDDERS:
The following items shall be incorporated as part of the
specifications and drawings for this project and shall be honored as such in
your proposal. Your acknowledgement of
this receipt of this OFFICIAL ADDENDUM
shall be noted in the form, accompanying your proposal.
All
Contracts CL-627.1.2.4
ITEM #1:
Document: - none -
Erratum: Clarification
Correction: Locations
of Contractor’s trailers, lay down areas, on-site storage, etc. shall be
determined at a later date. It is
anticipated that the rooms being renovated shall be used to store the majority
of project materials, tools, job boxes, etc.
ITEM #2:
Document: Floor
Plans
Erratum: Removal
of existing furniture and equipment not indicated.
Correction: Furniture,
computer equipment, and a/v projectors shall be removed by Clarion personnel.
ITEM #3:
Document: Floor
Plans
Erratum: Finished
ceiling height.
Correction: It is
anticipated that the finished ceiling height will be lowered approximately
3”-4” from its existing height. Final
height will be field coordinated at a later date.
Continued on the next page
Gemmell Student
Center
Renovation
of HVAC
Addendum
No. 1
January 10,
2008
Page 2
ITEM #4:
Document: Floor
Plans / Roof Plans
Erratum: Roof
Warrantee.
Correction: The
roofing material is 0.045” EPDM and the warrantee is maintained through
ITEM #5:
Document: Floor
Plans
Erratum: Flooring
protection not indicated.
Correction: Existing
flooring within the project area shall remain except as indicated
otherwise. All contractor’s shall be
responsible for providing adequate protection to the existing flooring to prevent soiling and
damage.
ITEM #6:
Document: Specification
“Section 01300-1.03A.12”
Erratum: Clarification
of coordination drawings.
Correction: Coordination
drawings are not required.
General Contract CL-627.1
ITEM #7:
Document: Drawing
“A-1”
Erratum: Clarification
of roof work.
Correction: Heating
Contractor shall provide temporary weathertight caps for curbs after equipment
has been removed. Openings in roof and installation of curbs are by the
G.C. Finished roofing work shall be by
the General Contractor. All work must be
compatible and shall maintain existing roof warranties. Roof modifications must be approved by
manufacturer. Roof manufacturer must
inspect completed roofing work and submit written certification that the roof
warrantee is not voided. Contractor
shall include all costs associated with this work in their bid.
ITEM #8:
Document: Drawing
“A-1”
Erratum: Clarification
of corridor wall.
Correction: The
corridor walls will extend from finished floor to the underside of the roof
deck. The wall is constructed using 5/8”
fire rated type “X” gypsum wall board on both sides.
Continued on the next page
Gemmell Student
Center
Renovation
of HVAC
Addendum
No. 1
January 10,
2008
Page 3
ITEM #9:
Document: Drawing
“A-1”
Erratum: Removal
of ceilings not indicated.
Correction: General
contractor shall remove the existing ceilings throughout the project space. Area of demolition shall coordinate with the
area of new work indicated on the reflected ceiling plan.
ITEM #10:
Document: Specification
“Section 09512”
Erratum: Clarification
of acoustical ceiling tile specification.
Correction: There is
no indication to “foil backed” ACT in the specification and is not required.
ITEM #11:
Document: Specification
“Section 09512” 3.01 C
Erratum: Clarification
of acoustical ceiling tile specification.
Correction: The
support of duct work and conduits shall be by the Heating and Electrical
Contractors respectively.
ITEM #12:
Document: Specification
“Section 09512” 3.01 D
Erratum: Clarification
of acoustical ceiling tile specification.
Correction: The use
of suspension isolation brackets for the support of the ceiling is not required.
Heating Contract CL-627.2
ITEM #13:
Document: Drawing
“HD-1”
Erratum: Ductwork
to be removed indicated as “dashed” but not “heavy” lineweights.
Correction: Remove
existing 36”x16” ducts along columns 6 and 8 to points indicated.
ITEM #14:
Document: Drawing
“HD-1”
Erratum: Work not
indicated on existing louvers to remain.
Correction: Provide
insulated blank-off panels at two (2) existing louvers to remain. Eliminate indication of demolition note “3”
at these louvers.
Continued on the next page
Gemmell Student
Center
Renovation
of HVAC
Addendum
No. 1
January 10,
2008
Page 4
ITEM #15:
Document: Drawing
“H-2”
Erratum: Size and
airflow for diffusers not indicated.
Correction: The
diffusers shall be 10” dia. neck throughout.
The ductwork serving each diffuser shall be 10” dia. The airflow to the diffusers shall be
balanced equally between them from each air handler: AHU-203 @ 240 cfm each, AHU-206 @ 200 cfm
each, AHU-207 @ 340 cfm each, AHU-208 @ 340 cfm each.
ITEM #16:
Document: Drawing
“H-2”
Erratum: Size of
return air grilles not indicated.
Correction: The
return air grilles to each air handler, indicated in section “A” shall be 36” x
24”, Krueger model S80 or equal as specified.
ITEM #17:
Document: Drawing
“H-2”
Erratum: Clarification
of symbol.
Correction: The
symbol indicated by an “S” inside of a
hexagon refers to a duct smoke detector.
Smoke detectors are furnished and wired by the E.C. and installed in the
duct by the H.C.
ITEM #18:
Document: Drawing
“H-3”
Erratum: Clarification
of roof work.
Correction: Heating
Contractor shall provide temporary weathertight caps for curbs after equipment
has been removed. Curbs for heating equipment (fans, intakes, etc.) are furnished by the H.C. and installed by
the G.C. Finished roofing work shall be by the General Contractor.
ITEM #19:
Document: Drawing
“H-3”
Erratum: Clarification
of intake.
Correction: The
outdoor air intake for AHU-206 is through an existing gravity ventilator. The new gravity ventilator in that vicinity
serves ductwork to the floor below.
ITEM #20:
Document: Specification
“Section 15086 Duct Insulation”
Erratum: Clarification
of duct insulation.
Correction: Outdoor
air ducts shall be externally insulated with rigid insulation as
specified. Supply ducts shall be
externally insulated with flexible insulation as specified. Return and relief ducts shall be internally
insulated with liner as specified.
Continued on the next page
Gemmell Student
Center
Renovation
of HVAC
Addendum
No. 1
January 10,
2008
Page 5
ITEM #21:
Document: Specification
“Section 15033-1.02.E”
Erratum: Clarification
of temporary heat.
Correction: The
project is to be completed in its entirety during the summer months. Heating is not expected to be required. Any temporary heat will be provided by the
Owner.
ITEM #22:
Document: Specification
“Section 15033-1.02.E”
Erratum: Clarification
of temporary heat.
Correction: The
project is to be completed in its entirety during the summer months. Heating is not expected to be required. Any temporary heat will be provided by the
Owner.
ITEM #23:
Document: Specification
“Section 15083-3.03”
Erratum: Clarification
of piping insulation.
Correction: Hydronic
hot and chilled water piping insulation shall be 1 ½” thick. Condensate drain piping insulation shall be
1” thick.
ITEM #24:
Document: Specification
Erratum: Power
ventilator specification.
Correction: Exhaust
fans shall be upblast centrifugal fan with square bases. Fans shall be constructed of heavy gage aluminum. Motors shall be located in a weatherproof,
vented compartment. Provide fans with
bird screen. Fans shall have adjustable
speed V‑belt drive rated at 150% of motor nameplate rating. Fan sheaves shall be fixed pitch; motor
sheaves shall be adjustable. Select
adjustable sheaves to provide rated output with setting near midpoint. Fan shall be upblast type, UL labeled. Fan motors shall be totally enclosed. Furnish NEMA I, surface-mounting, magnetic,
across‑the‑line starters with thermal overload and low voltage
protection. Furnish disconnect at
fan. Furnish UL approved curb. Installed discharge height shall satisfy code
requirements. Fans shall be the Model
VCR as made by Cook, Greenheck or Jenn-Aire.
ITEM #25:
Document: Specification
“Section 15900 Controls”
Erratum: Controls
section missing.
Correction: ADD
Section “15900 Controls” (attached).
ITEM #26:
Document: Specification
15940
Erratum: Sequence
of controls section changed in its entirety.
Correction: DELETE
Section “15940 HVAC Sequence of Operation”.
ADD
Section “15940 HVAC Sequence of Operation” (attached).
Continued on the next page
Gemmell Student
Center
Renovation
of HVAC
Addendum
No. 1
January 10,
2008
Page 6
Electrical Contract CL-627.4
ITEM #27:
Document: Drawing
“E-0”
Erratum: Lighting
Fixture mark “C” listed twice.
Correction: Eliminate
reference to second mark “C”. Replace
with: mark “D”; fixture to match existing corridor downlights.
ITEM #28:
Document: Drawing
“E-1”
Erratum: Clarification
on conduit installation.
Correction: Electrical
Contractor shall be responsible for the removal and reinstallation of ceiling
tiles required to complete conduit installation. Replace and tiles damaged
during the installation.
ITEM #29:
Document: Drawing
“E-3”
Erratum: Clarification
on numbered note #1.
Correction: Provide
120V-1ph junction box for heating controls.
Coordinate location with Heating Contractor. Homerun to available 120v circuit in panel
“LB”.
Sincerely,
CLAITMAN ENGINEERING ASSOCIATES, INC.
David W. Hurd, P.E.
DWH/jf