THIS ADDENDUM MUST BE ACKNOWLEDGED.

THIS ADDENDUM SHALL BECOME A PART OF THIS SOLICITATION. Amend Invitation to Bid 14-MC-2231 as follows:

1.1 ADDENDUM

A. Addendum No. 02

1.2 PROJECT

A. McKinley-Thatcher and Lincoln Elementary Schools

1.3 OWNER

A. Denver Public Schools

1.4 DATE

A. April 17, 2014

1.5 ARCHITECT

A. Anderson Hallas Architects, PC 715 Fourteenth Street, Golden, Colorado 80401

1.6 DESCRIPTION

A. This Addendum forms a part of Contract Documents and modifies original Specifications and Drawings, dated March 19, 2014, which were issued for bid on April 4, 2014.

B. Each Bidder shall acknowledge receipt of this Addendum in space provided in Bid Form.

C. Each Bidder shall be responsible for reading every item in this Addendum in order to determine to what extent work is affected.

D. Each Bidder shall be responsible for advising all subcontractors and material suppliers of this Addendum.

E. Each item in the Addendum is descriptive of items in Drawings and Specifications which are either added to, changed, or deleted.

F. Execute each item, herein listed, in complete conformance with all applicable sections of Drawings and Specifications.

PART 2 – GENERAL

2.1 GENERAL COMMENT

A. LINCOLN ELEMENTARY SCHOOL-The third floor custodial room has existing shelves that will need to be partially removed for the installation of the new VFD’s. The least amount of shelving should be removed so as to allow for the installation of the new VFD’s.

Denver Public Schools Purchasing Department

1617 S. Acoma St. Denver, Colorado 80223

INVITATION TO BID 14-MC-2231

ADDENDUM NUMBER TWO April 17, 2014

PART 3 – DRAWINGS

3.1 ARCHITECTURAL

A. Sheet A2.1: Detail 2-Correct note to read, “INFILL W/ NEW 1-HR RATED PARTITION. RE: 4/A2.2”.

3.2 ELECTRICAL

A. Sheet E.102 –Added note.

B. Sheet E.201 –Added note, clarified manufacturer.

If your proposal has been submitted and you wish to amend it, please modify your proposal on company letterhead. The amended proposal must be received prior to or included at the time and date set for the proposal opening. Each modification submitted to the District's Purchasing Office located at 1617 S. Acoma St. Denver, CO 80223. It must have Vendor’s name and return address and the applicable RFP number and title of the RFP clearly marked on the face of the envelope. If more than one modification is submitted, the modification bearing the latest date of receipt by the District's Strategic Sourcing Office will be considered the valid modification. *****This addendum must be acknowledged, whether or not you amend your proposal.*****

This Addendum must be included in your submittal or proposal, providing you do not need to amend your proposal.

PRINT OR TYPE YOUR INFORMATION

Name of Company: ____________________________________________ Fax: _____________

Address: ________________________ City/State: ________________ Zip: ______________

Contact Person: ___________________ Title: _____________________ Phone: ___________

Authorized Representative’s Signature: ____________________________ Phone: ___________

Printed Name: ____________________ Title: _____________________ Date: _____________

Approved by: ______________ Date: _____________

Reviewed by: ______________ Date: _____________

14-MC-2231 Addendum # 2

PANEL

LP2A

E102

3

PANEL

LP3A

E102

5

E102

4

PANEL "LMP3"

FEEDER ROUTED

ABOVE THE CEILING

FS

LMP3-4

E2

E3

GFILMP3-2

NEW PANEL

"LMP3"

PANEL

"LMP3"

FEEDER

EXH. FAN #1A VFD

LMP3-1,3,5

EXH. FAN #1B VFD

LMP3-7,9,11

EXH. FAN #1C VFD

LMP3-13,15,17

CU1

GFIWP

E2-36

E2-26,28

PANEL

"LMP3"

FEEDER

FCU1

E2-2,4

DEPARTMENT OF FACILITIES MANAGEMENT

OVERALL SECOND FLOOR PLAN1 SCALE: 1" = 20'-0"

3025 S. Parker Road, Suite 1100

Aurora, CO 80014-2950

303.696.2602 fax 303.696.0812

www.ssgroupinc.com

SSG Project Number: 14001.00

SSG MEP, Inc.

MEP

SSG

OVERALL THIRD FLOOR PLAN2 SCALE: 1" = 20'-0"

25

2-2

23

1-E

L-E

102

GENERAL NOTES

1. ALL EQUIPMENT INTEGRATED INTO THE FIRE ALARM SYSTEM SHALL BE SUCH THAT

WHEN SMOKE IS DETECTED AND THE FIRE ALARM SYSTEM IS IN ALARM, THE

MECHANICAL EQUIPMENT IS DE-ENERGIZED.

2. THE ELECTRICAL CONTRACTOR SHALL COORDINATE THE FINAL LOCATION OF ALL

EQUIPMENT WITH THE MECHANICAL CONTRACTOR PRIOR TO INSTALLATION.

3. ANY ROUTING OF WIRING WHICH IS BELOW THE CEILING IN THE CORRIDORS AND/OR

CLASSROOMS SHALL BE INSTALLED IN WIRE MOLD. WIRE MOLD SHALL BE WIRE

MOLD 7000 SERIES OR APPROVED EQUAL.

4. ALTERNATE ROUTING WILL BE EVALUATED BUT DOES NEED TO BE APPROVED BY

THE DPS PROJECT MANAGER AND ENGINEER PRIOR TO INSTALLATION TO AVOID

UNNECESSARY WALL PENETRATIONS.

5. THE ELECTRICAL CONTRACTOR SHALL SEAL COMPLETELY AROUND ANY

WALL/FLOOR PENETRATIONS. THE CONTRACTOR SHALL REMOVE ANY ACCESS

EXCESS THAT PROTRUDES THE SURFACE OF THE WALL.

6. THE FIRE ALARM CONTRACTOR SHALL FIELD VERIFY THAT ALL THE EXISTING

CLASSROOM TRANSFER FANS ARE INTERLOCKED WITH THE FACP. THE INTERLOCK

BETWEEN THE TWO SHALL BE SUCH THAT WHEN THE FIRE ALARM IS IN "ALARM"

STATUS, THE TRANSFER FANS ARE DE-ENERGIZED.

KEYED NOTES #

1. THE MECHANICAL CONTRACTOR SHALL PROVIDE AND

INSTALL A NEW FIRE/SMOKE DAMPER ABOVE THE

EXISTING DOOR WHERE THE NEW DUCTWORK

PENETRATES THE WALL. THE FIRE ALARM CONTRACTOR

SHALL INTEGRATE THE NEW FIRE/SMOKE DAMPER INTO

THE FIRE ALARM SYSTEM.

2. THE ELECTRICAL CONTRACTOR SHALL PROVIDE AND

INSTALL A NEW 208V., 30 AMP, 2-POLE NON-FUSED

DISCONNECT SWITCH IN A NEMA 3R ENCLOSURE FOR

NEW CU.

3. NEW GFCI WEATHERPROOF CONVENIENCE DUPLEX

RECEPTACLE MOUNTED ON UNISTRUT PER DETAIL NOTE

4, THIS SHEET.

4. THE ELECTRICAL CONTRACTOR SHALL INSTALL

DISCONNECT SWITCH AND RECEPTACLE ON EXTERIOR

SCHOOL WALL. THE RECEPTACLE SHALL BE MOUNTED

BELOW THE DISCONNECT SWITCH.

5. PROVIDE AND INSTALL NEW PANEL FEEDER CONDUIT.

CONDUIT SHALL BE ROUTED UP ABOVE THE THIRD FLOOR

LAY-IN CEILING ON UNISTRUT THEN TURN INTO THE WALL

AND PENETRATE INTO THE BUILDING. ALL WALL AND

ROOF PENETRATIONS FOR THE NEW FEEDER CONDUIT

SHALL HAVE A WEATHER TIGHT SEAL. PAINT CONDUIT TO

MATCH EXTERIOR BUILDING.

6. PROVIDE AND INSTALL NEW DUPLEX RECEPTACLE

BENEATH NEW VFD.

7. THE ELECTRICAL CONTRACTOR SHALL PROVIDE AND

INSTALL A NEW 208V., 30 AMP, 2-POLE NON-FUSED

DISCONNECT SWITCH IN A NEMA 1 ENCLOSURE FOR NEW

FCU.

1

ENLARGED THIRD FLOOR PLAN5 SCALE: 1/8" = 1'-0"

FLOOR CUSTODIAL CLOSET4 SCALE: 1/4" = 1'-0"

ENLARGED THIRD

6

2

3

4

4

5

ENLARGED DATA 222 3 SCALE: 1/8" = 1'-0"

7

5

2

2

2

2

DEPARTMENT OF FACILITIES MANAGEMENT

3025 S. Parker Road, Suite 1100

Aurora, CO 80014-2950

303.696.2602 fax 303.696.0812

www.ssgroupinc.com

SSG Project Number: 14001.00

SSG MEP, Inc.

MEP

SSGKEYED NOTES #

1. THE ELECTRICAL CONTRACTOR SHALL PROVIDE AND INSTALL A NEW

208V., 3-PHASE, 150AMP. ENCLOSED SHUNT TRIP CIRCUIT BREAKER IN A

NEMA 1 ENCLOSURE. MOUNT THE ENCLOSED CIRCUIT BREAKER AS

CLOSE TO THE MDC AS POSSIBLE. SHUNT TRIP ON THE CIRCUIT BREAKER

SHALL BE INTERLOCKED WITH THE NEW FIRE ALARM PANEL LOCATED IN

THE MAIN FIRST FLOOR OFFICE. EXTEND A NEUTRAL CONDUCTOR THRU

THE ENCLOSURE. THE NEW ENCLOSURE SHALL NOT BE WIDER THAN 16"

TO FIT BETWEEN THE EXISTING MDC AND UTILITY METER. REFER TO

DETAIL 1, SHEET E101 FOR MORE INFORMATION.

2. MAIN DISTRIBUTION CENTER IS CURRENTLY BEING METERED PER NEC

220.87 FOR 30 DAYS TO ESTABLISH AN EXISTING LOAD FOR THE

PANELBOARD.

3. PANEL E2 IS CURRENTLY BEING METERED PER NEC 220.87 FOR 30 DAYS

TO ESTABLISH AN EXISTING LOAD FOR THE PANEL.

4. MAIN DISTRIBUTION CENTER HAS (4) BUCKETS SIMILAR TO THIS AT THE

TOP OF THE DISTRIBUTION SECTION. ONLY ONE IS SHOWN FOR CLARITY.

5. THE ELECTRICAL CONTRACTOR SHALL PROVIDE AND INSTALL (3) NEW

200A FRNR FUSES TO REPLACE THE EXISTING (2) 175A AND (1) 200A FUSES

PROTECTING PANEL E2 AND E3.

6. PROVIDE BUS TAP KIT TO TAP OFF THE TOP OF EACH PHASE BUS.

CONTRACTOR SHALL DRILL INTO EACH PHASE BUS FOR ATTACHING TAPS.

THIS WILL REQUIRE THE MAIN DISTRIBUTION CENTER TO BE

DE-ENERGIZED FOR A PERIOD OF TIME. COORDINATE DOWN TIME WITH

DPS 7 DAYS PRIOR TO MOVING FORWARD WITH DE-ENERGIZING THE

ELECTRICAL SYSTEM. PROVIDE A FIRE WATCH DURING ANY TIME THE

MDC IS DE-ENERGIZED.

7. CONDUCTOR LENGTH BETWEEN LUG TAP AND ENCLOSED CIRCUIT

BREAKER SHALL BE NO LONGER THAN 10'-0".

8. THE EXISTING LOAD IS CONNECTED TO TWO POLES OF THE 3-POLE

DISCONNECT (PHASES A AND B).

M

M

T NG

TO

CWP

#6 CU TO

GND ROD

60A3P

60A

FRN-R

200A3P

200A

FRN-R

200A3P

200A

FRN-R

LP1A

LP2A

LP3A

E2

E3

EXISTING MAIN DISTRIBUTION CENTER (MDC)

600AMP, 208/120V, 3ɸ, 4W. 35,000 AIC RATINGX

EXISTING EXCEL ENERGY

150 KVA PAD MOUNTED

TRANSFORMER. 208/120V,

3ɸ, 4W SECONDARY.

CT

600A3P

100A3P

70A

FRN-R

AUDIT

100A2P

100A

FRN-R

E1

30A2P

30A

FRN-R

UNIVENT

60A2P

60A

FRN-R

EL1A

60A2P

50A

FRN-R

GYM

200A3P

200A

FRN-R

LPH

8 8 8 8

200A3P

200A

FRN-R

LPJ

200A3P

200A

FRN-R

L1K

100A3P

100A

FRN-R

LR

30A3P

SPARE

100A3P

35A

FRN-R

ELEVATOR

(4#8, 1#8

GND) 1"C.

EXISTING ELECTRICAL ONE-LINE DIAGRAM1 SCALE: NONE

SPAREUNKNOWN

25

2-2

23

1-E

L-E

201

150A

3P

LMP3

1

7

6

4

3[(4 #3/0 THWN CU)] 2"C.

FEEDER SCHEDULE

2

3 3

NOTE 2

X0X X1

X X2

X X3

LOAD CALCULATION

307 AMPS

384 AMPSEXISTING LOAD AT 208V, 3Ø PER

NEC 220.87, MULTIPLY BY 1.25%

NEW LOAD ADDED TO SERVICE

NEW MDF COOLING UNIT

• CONDENSING UNIT

• FAN COIL UNIT

• RECEPTACLE/DAMPERS

14.1 AMPS

5.1 AMPS

1.5 AMPS

25.2 AMPS

25.2 AMPS

25.2 AMPS

4.5 AMPS

TOTAL LOAD NOW ON MDC (AT 208V, 3Ø) 484.8 AMPS

5

PER CURRENT METERING DURATION (12

DAYS), MAXIMUM AMPERAGE FROM

METERING THE SERVICE IS:

NEW PANEL LMP3

• EXHAUST FAN #1A

• EXHAUST FAN #1B

• EXHAUST FAN #1C

• RECEPTACLE

FIRE ALARM

SHUNT TRIP

(STAGE)

2

2

2