Amendment_0002_DDG(X) WP4_Amendment 0002_Dwgs.pdf
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- Solicitation number
- N4008525R0001
About this file
These are technical engineering drawings for a Naval Facilities Engineering Systems Command (NAVFAC) project at the Philadelphia Navy Yard Annex, specifically Sheet 4S401 detailing T-slot floor enlarged part-plan and Section 4E101 showing floor grounding plan for Building 77H.
The T-slot floor drawing specifies a 7" thick cast iron floor plate with 1 1/4" fully machined T-slots, to be installed on a pile-supported slab with precise leveling requirements (measuring to 0.001" increments). The grounding plan details a comprehensive electrical grounding system using 4/0 AWG bare copper grounding electrode conductors, ground rods placed at 8'-0" intervals, ground plates, and bonding connections. The project is part of the DDG(X) LBTS WP4: Shaftline Foundation, with a construction contract number N40085-24-R-2653, designed by Whitman, Requardt & Associates, LLP for the Department of the Navy.
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Text version
FLOOR PLATE
TOP EL 0.00'
T-SLOT (TYPICAL)
PILE-SUPPORTED SLAB
7" 8"
1"± NON-SHRINK
GROUT
EM
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EN
T
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DROP IN DUST COVER CAST-IN-PLACE ANCHOR ROD
AS REQUIRED BY T-SLOT
MANUFACTURER (TYPICAL
PILE-SUPPORTED SLAB
3" C
LR
(M
IN
ANCHOR CAN (TYPICAL)
NON-SHRINK GROUT
1.312"
1.2 5"
SEE NOTE 2
177'-7 3/4"±
'-0
'-2
177'-9 3/4"±
EDGE OF T-SLOT FLOOR PLATE (TYPICAL)
EDGE OF T-SLOT (TYPICAL)
EDGE OF CONCRETE SLAB
(TYPICAL)
ANCHOR HOLES
(TYPICAL)
6" (T
YP
1'- 0"
(T
YP
A1 4S401
A2 4S401
PLATE CONNECTING FEATURES
(TYPICAL)
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DRAWFORM REVISION: 25 AUGUST 2020
CHK
SATISFACTORY TO
APPROVED
ACTIVITY
DATE
FOR COMMANDER NAVFAC
SEAL
A/E INFO
OF
EPROJECT NO.:
Whitman, Requardt & Associates, LLP 801 South Caroline Street, Baltimore, Maryland 21231
D D
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1733372
N40085-24-R-2653
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PROFESSIONAL CERTIFICATION. I HEREBY CERTIFY THAT THESE
DOCUMENTS WERE PREPARED OR APPROVED BY ME, AND
THAT I AM A DULY LICENSED
OF THE STATE OF MARYLAND,
, EXPIRATION DATE
UNDER THE LAWS
LICENSE No.
NEK
GENERAL SHEET NOTES
4S401
T-
SL
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F
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NL
AR
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D
PA
RT
-P
LA
N
AN
D
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TA
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AS NOTED
TJC AAB RJA
12921618
ENGINEER
41614 02/05/2026
PLAN
NORTH
T-SLOT FLOOR ENLARGED PART-PLAN
SCALE 1/2" = 1'-0"A1
1. PROVIDE 7" THICK CAST IRON T-SLOT FLOOR PLATE CONFORMING TO
ASTM A48-76 CLASS 40 WITH MICRO-FINISH 63.
2. REFER TO SPECIFICATIONS FOR PRE-GROUT AND AFTER-GROUT
FLATNESS AND LEVELING REQUIREMENTS.
3. PROVIDE 1 1/4" FULLY MACHINED T-SLOTS TO FIT MCMASTER-CARR PART
NUMBER 94750A603. COORDINATE T-SLOT DIMENSIONS WITH THE
GOVERNMENT PRIOR TO SUBMITTING SHOP DRAWINGS.
4. FIELD VERIFY TOTAL LENGTH OF T-SLOT FLOOR PLATE PRIOR TO
SUBMITTING SHOP DRAWINGS.
5. COORDINATE CAST-IN-PLACE ANCHORAGE LOCATIONS WITH REINFORCING
STEEL, PILE ANCHORAGE, AND OTHER EMBEDDED ITEMS. COORDINATE
LOCATIONS AND TOLERANCES WITH T-SLOT FLOOR MANUFACTURER AND
APPROVED SHOP DRAWINGS.
6. LEVEL PLATES UTILIZING EQUIPMENT CAPABLE OF MEASURING
INCREMENTS OF 0.001". PRIOR TO FINAL LEVELING, SURVEY THE
SURROUNDING FLOOR AND SUBMIT SURVEY RESULTS TO THE
GOVERNMENT FOR APPROVAL
7. CLEAN AND COAT T-SLOT FLOOR PLATES WITH RUST INHIBITOR.
8. FOR BIDDING PURPOSES, ASSUME 1" DIAMETER CAST-IN-PLACE ANCHOR
RODS WITH 36" EMBEDMENT DEPTH AND SPACED AT 2'-6" ON-CENTER IN
EACH DIRECTION.
9. REFER TO ELECTRICAL SHEETS FOR GROUNDING DETAILS.SECTION
REF:4S401SCALE 1 1/2" = 1'-0"A1 SECTION
REF:4S401SCALE 1 1/2" = 1'-0"A2
T-SLOT DETAIL
REF:4S401SCALE 3" = 1'-0"A3
4S401 A3
GRAPHIC SCALE
SCALE:
4'2'1'
1/2" = 1'-0"
SCALE: 1 1/2" = 1'-0"
4" 8" 16"
SCALE:
4" 8"
3" = 1'-0"
2"
MIS
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B
C
D
SCALE:
CONSTR. CONTR. NO.
SHEET
NAVFAC DRAWING NO.
DES DRW
SY
M
DE
SC
RI
PT
IO
N
DA
TE
AP
PR
DRAWFORM REVISION: 25 AUGUST 2020
CHK
SATISFACTORY TO
APPROVED
ACTIVITY
DATE
FOR COMMANDER NAVFAC
SEAL
A/E INFO
OF
EPROJECT NO.:
Whitman, Requardt & Associates, LLP 801 South Caroline Street, Baltimore, Maryland 21231
D D
G (X
LB
TS
W
P 4:
S H
A
FT
LI
N
E F
O U
N D
A
TI
O N
PH
ILA
DE
LP
HI
A
NA
VY
Y
AR
D
AN
NE
X
PH
ILA
DE
LP
HI
A, P
EN
NS
YL
VA
NI
A
1733372
N40085-24-R-2653
MRI/PJB
HPN
DE
PA
RT
ME
NT
O
F
TH
E
NA
VY
NA
VA
L F
AC
ILI
TI
ES
E
NG
IN
EE
RI
NG
S
YS
TE
MS
C
OM
MA
ND
PROFESSIONAL CERTIFICATION. I HEREBY CERTIFY THAT THESE
DOCUMENTS WERE PREPARED OR APPROVED BY ME, AND
THAT I AM A DULY LICENSED
OF THE STATE OF MARYLAND,
, EXPIRATION DATE
UNDER THE LAWS
LICENSE No.
WRB
GRAPHIC SCALE
1. REFER TO SHEET 4E001 FOR ELECTRICAL SYMBOLS, LEGEND,
ABBREVIATIONS, GENERAL NOTES AND DEFINITIONS.
2. REFER TO SHEET 4E601 FOR DETAILS.
3. COORDINATE INTERIOR SITE GROUNDING GRID INSTALLATION WITH
STRUCTURAL COMPONENTS. ROUTE INTERIOR SITE GROUNDING
GRID UNDER CONCRETE SLAB.
4. INTERIOR SITE GROUNDING GRID AT TEST WELLS MUST HAVE
RESISTANCE OF 5 OHMS OR LESS.
5. GROUNDING AND BONDING CONDUCTORS SHOWN MUST BE 4/0 AWG
BARE COPPER SOFT DRAWN (BCSD) GROUNDING ELECTRODE
CONDUCTOR UNLESS OTHERWISE NOTED.
6. CONNECTIONS SHOWN MUST BE IRREVERSIBLE EXOTHERMIC WELD
TYPE UNLESS OTHERWISE NOTED.
7. BOLTED TYPE COMPRESSION CONNECTIONS MUST BE FOR ABOVE
GRADE USE ONLY AND MUST BE OF SIMILAR METAL.
8.
1. PROVIDE 4/0 AWG BARE COPPER GROUNDING ELECTRODE
CONDUCTOR GRID BELOW SLAB. GROUNDING ELECTRODE
CONDUCTOR ROUTING MUST BE COORDINATED WITH STRUCTURAL
PILE LOCATIONS (TYPICAL).
2. PROVIDE GROUND RODS AT 8'-0" SPACING AROUND THE
PERIMETER OF THE SLAB. PROVIDE GROUND RODS AT 8'-0"
SPACING WITHIN THE GROUNDING GRID PERIMETER. GROUND ROD
LOCATIONS MUST BE COORDINATED WITH STRUCTURAL PILE
LOCATIONS (TYPICAL).
3. TYPE 'A' GROUND ROD WITH TEST WELL. REFER TO DETAIL C2 ON
SHEET 4E601. (TYPICAL)
4. CONNECT 4/0 AWG GROUNDING ELECTRODE CONDUCTOR TO
EXISTING BUILDING GROUNDING GRID VIA EXOTHERMIC WELD AT
BUILDING STEEL AT NEAREST COLUMN. EXTEND GEC THRU TRENCH
AT FLOOR SLAB. COORDINATE WITH STRUCTURAL SHEET 4S101.
(TYPICAL)
5. CONNECT GROUNDING STRAP (DLO TYPE CABLE) TO GROUND
PLATE AT SLAB VIA TERMINAL LUG THAT IS COMPATIBLE WITH DLO
CABLE. EXTEND DLO CABLE FOR FUTURE CONNECTION TO CLASS III
EQUIPMENT. COIL AND SECURE A MINIMUM OF 8'-0" OF DLO CABLE
ABOVE THE SLAB. (TYPICAL)
6. TYPE 'B' GROUND ROD. REFER TO DETAIL C4 ON SHEET 4E601.
(TYPICAL)
7. GROUND PLATE. GROUND PLATE MUST BE INSTALLED FLUSH WITH
TOP OF SLAB. GROUND PLATE INTERCONNECTS TO GROUNDING
GRID VIA 4/0 AWG BARE COPPER GROUNDING ELECTRODE
CONDUCTOR WITH AN IRREVERSIBLE MECHANICAL CONNECTION
AT THE GEC GRID BELOW THE SLAB. COORDINATE FINAL LOCATION
WITH CONTRACTING OFFICER PRIOR TO SUBMITTING SHOP
DRAWINGS (TYPICAL). REFER TO DETAIL A2/4E601.
8. CONTAINMENT TRENCH AT FLOOR SLAB. REFER TO STRUCTURAL
SHEET 4S101.
9. PROVIDE 4/0 AWG BARE COPPER GROUNDING ELECTRODE
CONDUCTOR BELOW SLAB CONNECTED TO GROUNDING PLATE
POST VIA IRREVERSIBLE MECHANICAL CONNECTOR AND
GROUNDING GRID (TYPICAL).
10. BONDING CONNECTIONS TO STEEL T-SLOT FLOOR AT 20'-0" SQUARE
INTERVALS. PROVIDE CONNECTION TO T-SLOT STEEL FLOORING
PER MANUFACTURER'S REQUIREMENTS. (TYPICAL FOR ENTIRE
GRID AREA).
11. PROVIDE BONDING BETWEEN SECTIONS OF T-SLOT FLOOR
SYSTEMS (TYPICAL FOR ENTIRE GRID AREA).
12. PROTECT AND MAINTAIN EXISTING GROUNDING CONNECTION
(EXOTHERMIC WELD TO STEEL COLUMN) FROM THE BUILDING
COLUMN TO PMM PAD.
SCALE:
16'8'4'
1/8" = 1'-0" 4E101
FL
OO
R
PL
AN
GR
OU
ND
IN
G
AS NOTED
CDW CDW IHK
12921623
ENGINEER
28792 06/10/2027
353020101 BLDG 77L
BLDG 77H
E
A
N
WORK AREA
B
D
KEY PLAN
FLOOR PLAN - GROUNDING
SCALE 1/8" = 1'-0"A1
PLAN
NORTH
GENERAL SHEET NOTES SHEET KEYNOTES
11 10 11 10 11 10 11
TYP
TYP
TYP
TYP
TYP
TYP
6 TYP
4 4
4 4 4
MIS
CE
LLA
NE
OU
S C
HA
NG
ES
/07 /25
WR
A
| 4S401 - T-SLOT FLOOR ENLARGED PART-PLAN AND DETAILS |
| 4E101 - FLOOR PLAN - GROUNDING |
File details come from the government source that posted it. Updated .