notice to all contractors submitting bids for this work ... · existing concrete duct marker...
TRANSCRIPT
August 1, 2016 ADDENDUM NO. 2 I16.002.002
To The Contract DocumentsFor The Construction Of The
MAIN WIND CONE REPLACEMENT PROJECT
at the
HALF MOON BAY AIRPORTSAN MATEO COUNTY, CA
TO ALL HOLDERS OF CONTRACT DOCUMENTS:
The following additions and/or corrections shall become part of the Contract Documents andConstruction Specifications for the subject project.
Notice to all Contractors submitting bids for this work and to all contractdocument holders.
You are hereby notified of the following changes to the Contract Documents, more specifically,to the Bid Proposal Package and the construction plans for this project. This addendum shallsupersede the original contract documents wherein it contradicts the same and shall takeprecedence over anything to the contrary therein. All conditions remain the same.
PROJECT PLANS:
1. Remove the following plan sheets and replace with the ones contained in this Addendum:
G-002, Sheet index, Survey Control and Legend G-003, Main Wind Cone General Notes CG-101, Wind Cone Replacement and Erosion Control Plan CG-501, Wind Cone Details
END OF ADDENDUM
C&S ENGINEERS, INC.
August 1, 2016Jessica L. Bryan, P.E., C.M. dateDepartment Manager
8/1/16
PROPOSED TAXIWAY EDGE LIGHT
EXISTING CONTOUR LINE40
EXISTING FENCE LINE
EXISTING STORM DRAIN PIPE
EXISTING HEADWALL
EXISTING WATER LINE
EXISTING SANITARY SEWER LINE
EXISTING SANITARY SEWER MANHOLE
EX G
EXISTING GAS LINE
EXISTING OVERHEAD TELEPHONE LINE
EX T
OH/T
EXISTING UNDERGROUND ELECTRIC LINE
EXISTING OVERHEAD ELECTRIC LINE
OH/E
EXISTING UNDERGROUND TELEPHONE LINE
EXISTING LIGHT POLE
LP
UP
EXISTING UTILITY POLE
EXISTING CONCRETE DUCT MARKER
EXISTING CONCRETE CABLE MARKER
EXISTING CONCRETE SPLICE MARKER
D
C
S
EXISTING BOLLARD OR POST
EXISTING EDGE OF SHRUBS
EXISTING FLOW LINE
EXISTING BLOCK WALL
EXISTING RUNWAY OR TAXIWAY EDGE LIGHT
EXISTING AIRFIELD GUIDANCE SIGN
MW
EXISTING MONITORING WELL
EXISTING ELECTRICAL MARKER
EXISTING ELECTRICAL MANHOLE
EMH
EXISTING PULLBOX
PB
EXISTING DUCT BANK
EXISTING AIRFIELD LIGHTING CABLE IN TRENCH
EXISTING TRANSFORMER
EXISTING WIND CONE
EXISTING LIGHTED WIND CONE
EXISTING SURVEY CONTROL POINT
EXISTING AVIATION EASEMENT BOUNDARY
EXISTING DOUBLE SWING GATE
EXISTING CANTILEVER GATE
RUNWAY/TAXIWAY CENTERLINE
EXISTING AIRPORT PROPERTY LINE
EXISTING GUY WIRE AND ANCHOR
EXISTING ROAD
EXISTING AIRFIELD LIGHTING CABLE IN TRENCH
EXISTING TAXIWAY EDGE LIGHT
ABANDON IN PLACE
EXISTING POWER POLE
A
FLAGPERSON LOCATION
BARRICADE LOCATION WITH WORK
WORK AREA LIMITS / STAGING AREAS
APPROX. - APPROXIMATE
ASPH. - ASPHALT
BC - BEGIN CURVE
BLDG. - BUILDING
CIP - CAST IRON PIPE
CONC. - CONCRETE
CSP - CORRUGATED STEEL PIPE
DIA. - DIAMETER
ELEV. - ELEVATION
FND. - FOUNDATION
LT - LEFT
LP - LOW POINT
MAX. - MAXIMUM
MIN. - MINIMUM
MISC. - MISCELLANEOUS
NA - NOT APPLICABLE
OFA - OBJECT FREE AREA
PAV'T. - PAVEMENT
PC - POINT OF CURVATURE
PT- POINT OF TANGENCY
PVI - POINT OF VERTICAL INTERSECTION
PVC - POINT OF CURVATURE (VERTICAL CURVE)
PVC - POLYVINYL CHLORIDE PIPE
PVT - POINT OF TANGENCY (VERTICAL CURVE)
R - RADIUS
RCP - REINFORCED CONCRETE PIPE
RSA - RUNWAY SAFETY AREA
ROW - RIGHT OF WAY
RPZ - RUNWAY PROTECTION ZONE
RT - RIGHT
RW - RUNWAY
SHDR. - SHOULDER
SICPP - SMOOTH INTERIOR CORRUGATED
POLYETHYLENE PIPE
STA. - STATION
TOFA - TAXIWAY OBJECT FREE AREA
TSA - TAXIWAY SAFETY AREA
TW - TOP OF WALL
TYP. - TYPICAL
PI - POINT OF INTERSECTION
ABAN. - ABANDONED
CMP - CORRUGATED METAL PIPE
UD - UNDERDRAIN
PCC - PORTLAND CEMENT CONCRETE
PAVEMENT
BM - BENCH MARK
EC - END OF CURVE
FS - FINISH SURFACE
EOP - EDGE OF PAVEMENT
FF - FINISH FLOOR
GB - GRADE BREAK
W
EXISTING SANITARY SEWER CLEANOUT
EX E
EX SS
EX W
HAF 3
E
EXISTING DOMESTIC WATER METER
FG - FINISH GRADE
CMPA - CORRUGATED ARCHED METAL PIPE
FL - FLOW LINE
IE - INVERT ELEVATION
AST - ABOVE GROUND STORAGE TANK
TC - TOP OF CURB
TD - TOP OF DIKE
TF - TOP OF FOOTING
HP - HIGH POINT
ROFA - RUNWAY OBJECT FREE AREA
O.C. - ON CENTER
AREA DESIGNATION
BC-1
TP-1
TEST BORING LOCATION
TEST PIT LOCATION
EXISTING TAXIWAY EDGE LIGHT TO REMAIN
EXISTING AIRFIELD GUIDANCE SIGN
EXISTING RUNWAY OBSTACLE FREE ZONE
EXISTING RUNWAY SAFETY AREA
EXISTING RUNWAY OBJECT FREE AREA
ROFA
ROFZ
RSA
EXISTING POWER POLE
F:\Project\I16 - San Mateo County\I16.001.001- Parallel Taxiway_Half Moon Bay\Design\CADD\Border\county seal monochrome.bmp
8950 Cal Center Drive
Suite 112
Sacramento, California 95826
Phone: 916-364-1470
www.cscos.com
C&S Engineers, Inc.
PROPOSED TRANSFORMER
AMPS - AMPERES
AWG - AMERICAN WIRE GAUGE
BFG - BELOW FINISHED GRADE
PROPOSED AIRFIELD LIGHTING CABLE IN
CONDUIT. "WC/I" DENOTES ONE #8 AWG, 600V,
I/C AIRFIELD LIGHTING CABLE IN EXISTING 2"
PVC CONDUIT (REMOVE EXISTING CABLE AND
PROVIDE THIS CABLE).
PROPOSED LIGHTED WIND CONE. ALL WIND CONE
MATERIALS SHALL BE RESISTANT TO CORROSION
AND RUST
TWY - TAXIWAY
SHEET NO. SHEET REFERENCE NO. TITLE
1 G-001 TITLE SHEET
2 G-002 SHEET INDEX, SURVEY CONTROL AND LEGEND
3 G-003 MAIN WIND CONE GENERAL NOTES
4 G-101 WIND CONE GENERAL PLAN
5 G-102 CONSTRUCTION SAFETY PHASING PLAN
6 G-103 MISCELLANEOUS DETAILS
7 CG-101 WIND CONE REPLACEMENT AND EROSION CONTROL PLAN
8 CG-501 WIND CONE DETAILS
WC/1
WC/1 - (SEE LEGEND ABOVE)
PROPOSED DIRECTION OF
CONSTRUCTION TRAFFIC
HORIZONTAL DATUM:
CALIFORNIA COORDINATE SYSTEM, ZONE 3
NORTH AMERICAN DATUM OF 1983 (NAD83), EPOCH 2005.69
VERTICAL DATUM:
NORTH AMERICAN VERTICAL DATUM OF 1988 (NAVD88)
PROJECT CONTROL:
HAF 3 HAF 8 HAF 9
N: 2016698.56 N: 2016025.82 N: 2017650.02
E: 5982244.66 E: 5981499.90 E: 5979771.41
ELEV: ELEV: ELEV:
PROPOSED STABILIZED CONSTRUCTION
ENTRANCE
CND - CONDUIT
1
1
1
1
30
30
200
60
100
8
8-1-16
Addendum 2
F:\Project\I16 - San Mateo County\I16.001.001- Parallel Taxiway_Half Moon Bay\Design\CADD\Border\county seal monochrome.bmp
8950 Cal Center Drive
Suite 112
Sacramento, California 95826
Phone: 916-364-1470
www.cscos.com
C&S Engineers, Inc.
1
1
8-1-16
Addendum 2
F:\Project\I16 - San Mateo County\I16.001.001- Parallel Taxiway_Half Moon Bay\Design\CADD\Border\county seal monochrome.bmp
8950 Cal Center Drive
Suite 112
Sacramento, California 95826
Phone: 916-364-1470
www.cscos.com
C&S Engineers, Inc.
FURNISH AND INSTALL PROVIDE NEW PRIMARY WIND CONE AND SUPPORT STRUCTURE.
REFER TO SHEET CG-501 FOR DETAILS
REMOVE AND DISPOSE OF EXISTING PRIMARY WIND CONE ASSEMBLY, CABLE,
FOUNDATION, AND OTHER INCIDENTALS AND DISPOSE OFF-SITE
CIRCULATORY SEGMENTED CIRCLE CONCRETE TO REMAIN, PROTECT IN PLACE
EXISTING WIND CONE BRANCH CIRCUIT CONDUIT AND CABLE TO REMAIN.
CONNECT NEW CABLE TO EXISTING WIND CONE STEP-UP TRANSFORMER IN
ELECTRICAL VAULT. REFER TO A1/CG-101 AND C1/CG-501.
CLEAR AND GRUB ALL VEGETATION AND ORGANIC MATERIAL AND DISPOSE OFF-SITE
CLEAR AND GRUB ALL VEGETATION AND ORGANIC MATERIAL A MINIMUM OF 5' WIDTH
ALONG LENGTH OF CONDUIT TO BE REMOVED. DISPOSE OF ALL REMOVED MATERIAL
OFF-SITE.
INSTALL SILT FENCE PER DETAIL B1/G-103
1
1
1
1
1
1
1
8-1-16
Addendum 2
PROPOSED LIGHTED WIND CONE
FURNISH AND INSTALL
TWO #12 AWG AND
ONE #12 AWG
GROUND IN 3/4"
CONDUIT
FURNISH AND INSTALL
1 KVA 600V- 120/240V
TRANSFORMER
FURNISH AND INSTALL
TWO #8 AWG 600V 1/C
AIRFIELD LIGHTING
CABLES IN 2" CONDUIT
FURNISH AND INSTALL
600V, 30A, 2-POLE
DISCONNECT SWITCH
FUSED AT 15 AMPS
EXISTING
PULL BOX IN
SEGMENTED
CIRCLE
EXISTING WIND CONE BRANCH CIRCUIT
CONDUIT AND CABLE TO REMAIN.
EXISTING
VAULT
EXISTING WIND CONE
STEP-UP TRANSFORMER
TO REMAIN
TO EXISTING BRANCH
CIRCUIT PANEL
EXISTING BRANCH
CIRCUIT TO REMAIN
PROVIDE TWO #8 AWG, 600V, 1/C AIRFIELD LIGHTING
CABLES IN 2" SCHEDULE 40 PVC CONDUIT. COORDINATE
BURIAL DEPTH IN FIELD WITH EXISTING PULL BOX.
PROVIDE SINGLE PHASE 1KVA 600V -
120/240V STEP-DOWN TRANSFORMER
IN NEMA-3R 304 STAINLESS STEEL
ENCLOSURE. BASIS OF DESIGN SHALL
BE CROUSE-HINDS SG0G11P01P OR
APPROVED EQUAL. PROVIDE 600V,
2-POLE, 30A DISCONNECT SWITCH
FUSED AT 15A ADJACENT TO
TRANSFORMER. REFER TO C1, THIS
SHEET FOR WIRING DIAGRAM.
BASIS OF DESIGN FOR PROPOSED WIND CONE SHALL BE
HALI-BRITE L-807-S2-IN-120-5 INTERNALLY LIGHTED LED OR
APPROVED EQUAL. PROVIDE ZINC-RICH PRIMER AND
POWDER COATING FOR WIND CONE SUPPORT STRUCTURE
AND FRAMEWORK, FOR CORROSION RESISTANCE. BASIS
OF DESIGN SHALL BE TIGER SHIELD SERIES 69 OR
APPROVED EQUAL. PROVIDE 120V LED OBSTRUCTION
LIGHT, CROUSE-HINDS RTLSF/120 OR APPROVED EQUAL.
PROVIDE TWO #12 AWG TYPE THHN/THWN
CABLE AND ONE #12 AWG GROUND
CONDUCTOR IN 3/4" SCHEDULE 40 PVC
CONDUIT. DIRECT BURY AT 24" BFG TO TOP
OF CONDUIT.
CIRCULATORY CONCRETE TO
REMAIN, PROTECT IN PLACE
EXISTING WIND CONE BRANCH
CIRCUIT CONDUIT AND CABLE TO
REMAIN. REFER TO A1/CG-101 FOR
CONTINUATION
3'-0"
OR
A
S R
EQ
UIR
ED
BY
M
AN
UF
AC
TU
RE
R
2'-0"
1'-0"
M
IN
.
2'-6" x 2'-6"
1'-6"
(T
YP
.)
2' TO 5'
1'-0"
CONNECT NEW #8 AWG
CABLE TO EXISTING
STEP-UP TRANSFORMER
F:\Project\I16 - San Mateo County\I16.001.001- Parallel Taxiway_Half Moon Bay\Design\CADD\Border\county seal monochrome.bmp
8950 Cal Center Drive
Suite 112
Sacramento, California 95826
Phone: 916-364-1470
www.cscos.com
C&S Engineers, Inc.
1
8-1-16
Addendum 2
1
1
TYPICAL EXISTING PULL
BOX IN FIELD.