D1_8775870_Bob_Hall_Pier_7_5__PLATFORM_v15.pdf

PDF 2 MB Posted Apr 13, 2026

Attached to: PLATFORM FABRICATION SERVICES FOR NOAA Federal contract opportunity
Solicitation number: 1305M226Q0094
Issued by: Department of Commerce National Oceanic and Atmospheric Administration

About this file

Written by GovTribe AI · Apr 13, 2026

This is a comprehensive technical design document and bill of materials for the NOAA Bob Hall Pier 7.5' Platform, a specialized marine monitoring structure operated by the National Oceanic and Atmospheric Administration (NOAA) under the National Ocean Service Center for Operational Oceanographic Products and Services (NOS CO-OPS).

The platform design includes a complete aluminum structural assembly weighing approximately 1,304 pounds, comprised of multiple integrated components detailed across 20 specification sheets. The primary structural elements consist of a welded aluminum frame (366 lbs), two leg assemblies (103.5 lbs each), four bracing members (17.3-16.3 lbs each), and a mean water level rail system (243 lbs). Secondary components include corner rails (104 lbs), sponson assemblies, grating decking in fiberglass composite materials with individual weights ranging from 9.8 to 46.58 lbs, an aluminum access ladder (O'Keefe's Model 504), and a Data Management and Environmental Sensor (DMES) assembly. All structural welds use 4043 filler wire and require full joint penetration where specified. The fastening schedule calls for stainless steel 316 hardware throughout, with 48 bolts, washers, and lock nuts of varying diameters (3/4" to 1/4" UNC specifications) plus 150 additional fasteners for grating installation. Installation requires anchoring legs using 3/4-10UNC and 3/8-16UNC threaded anchors with specifications to be detailed on separate installation drawings. The point of contact is BART HOGAN at NOAA, Silver Spring, Maryland, (240) 244-9424, with revision dated March 20, 2026, marked as final.

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NOAA • NOS • CO-OPS SHEET NO. : PAGE:

8775870 BOB HALL PIER

7.5' PLATFORM

CS-01 1/20

COVER SHEET

REVISIONS

REV DATE DRAWN BY APPROVED BY DESCRIPTION

- 3/20/2026 MDM B. HOGAN FINAL

8775870 BOB HALL PIER

7.5' PLATFORM

ISO OVERVIEW

DRAWING INDEX

SHEET SHEET NO. TITLE

01 CS-01 COVER SHEET

02 S-01 FRAME (LAYOUT 1)

03 S-02 FRAME (LAYOUT 2)

04 S-03 FRAME (LAYOUT 3)

05 S-04 LEG A

06 S-05 LEG B

07 S-06 BRACING

08 S-07 MWWL RAIL (1)

09 S-08 MWWL RAIL (2)

10 S-09 CORNER RAIL (1)

11 S-10 CORNER RAIL (2)

12 S-11 SPONSON

13 S-12 LADDER SUPPORT

14 S-13 GRATING

15 AS-01 PLATFORM ASSEMBLY

16 AS-02 SPONSON ASSEMBLY

17 AS-03 RAILING & GRATING ASSEMBLY

18 AS-04 DMES ASSEMBLY

19 AS-05 COMPLETE ASSEMBLY

20 G-01 ITEM LIST

GENERAL NOTES

1. LINK TO VIEW 3D MODEL https://a360.co/4t3J7Wd

2. SEE COMPONENTS DRAWINGS AS NOTED.THIS ASSEMBLY IS MADE

FROM COMPONENTS X-X, SEE SH G-01 FOR DETAILS.

3. THE FULLY ASSEMBLED COMPONENT APPROX WEIGHT IS: 1,304 LBS.

4. ALL DIMENSIONS ARE IN INCHES AND FEET UNLESS OTHERWISE

STATED.

5. POC: BART HOGAN (240) 244-9424, NOAA, SILVER SPRING, MD.

7.5' PLATFORM

S-01 2/20

FRAME (LAYOUT 1)

SHEET NOTES:

1. FOR ITEM 1 QUANTITY REQUIRED IS 1 EACH

2. ALL GROOVE WELDS SHALL BE FULL JOINT PENETRATION

3. ALL GROVE WELDS SHALL HAVE A 0.12" ROOT OPENING

4. ALL FILLET WELDS SHALL BE A MINIMUM OF 14" UNLESS OTHERWISE SPECIFIED.

5. ALL WELDS TO BE CONTINOUS UNLESS OTHERWISE SPECIFIED.

6. USE 4043 FILLER WIRE FOR ALL WELDS.

7. GRIND FLUSH TO MATERIAL ON TOP.

8. ALL MACHINED SURFACES FINISH TO BE 125 RMS

9. WEIGHT: 366 LBS

108.25

65.50

56.00

(TYP)

63.00

(TYP)

17.750 (TYP)

10.750 (TYP)

3.50(TYP)

Ø.875 DRILL THRU

BOTH SIDE (4 PLACES)

72.25

(TYP)

TOP VIEW

FRAME

1.25 (TYP) 1.25 (TYP)

Ø.875 DRILL THRU

ONE SIDE ONLY (4 PLACES)

DO NOT SCALE DRAWING

DRAWING SIZE ANSI A

UNLESS OTHERWISE SPECIFIED:

DRAWINGS ARE IN INCHES

TOLERANCES ARE:

FRACTIONS DECIMALS ANGLES

± 1/16 ± .X ± 0.1 ± 0.5°

± .XX ± 0.06

± .XXX ± 0.01

SEE SH S-02 FOR BOTTOM VIEW

SEE SH S-03 FOR FRONT, RIGHT, AND LEFT VIEW

SEE SH NOTES 1-9

(6 PLACES)

ISO VIEW

FRAME

7.5' PLATFORM

S-02 3/20

FRAME (LAYOUT 2)

SHEET NOTES:

1. ALL FILLET WELDS SHALL BE A MINIMUM OF 14" UNLESS OTHERWISE SPECIFIED

2. ALL WELDS TO BE CONTINOUS UNLESS OTHERWISE SPECIFIED

3. USE 4043 FILLER WIRE FOR ALL WELDS

4. ALL MACHINED SURFACES FINISH TO BE 125 RMS

BOTTOM VIEW

FRAME

12.00

(TYP)

9.500

(TYP)

14.00 (TYP)

11.500 (TYP)

1.25 (TYP)

19.50

20.50

1.375 (TYP)(TYP)

UNLESS OTHERWISE SPECIFIED:

DRAWINGS ARE IN INCHES

TOLERANCES ARE:

FRACTIONS DECIMALS ANGLES

± 1/16 ± .X ± 0.1 ± 0.5°

± .XX ± 0.06

± .XXX ± 0.01

DO NOT SCALE DRAWING

DRAWING SIZE ANSI A

Ø.875 (TYP)

1.375 (TYP)

1.25 (TYP)

SEE SH S-01 FOR TOP VIEW

SEE SH S-03 FOR FRONT, RIGHT, AND LEFT VIEW

SEE SH NOTES 1-4

(TYP)

ISO VIEW

FRAME

7.5' PLATFORM

S-03 4/20

FRAME (LAYOUT 3)

SHEET NOTES:

1. ALL GROOVE WELDS SHALL BE FULL JOINT PENETRATION

2. ALL GROVE WELDS SHALL HAVE A 0.12" ROOT OPENING

3. ALL FILLET WELDS SHALL BE A MINIMUM OF 14" UNLESS OTHERWISE

SPECIFIED.

4. ALL WELDS TO BE CONTINOUS UNLESS OTHERWISE SPECIFIED.

5. USE 4043 FILLER WIRE FOR ALL WELDS.

6. GRIND FLUSH TO MATERIAL ON TOP.

7. ALL MACHINED SURFACES FINISH TO BE 125 RMS

UNLESS OTHERWISE SPECIFIED:

DRAWINGS ARE IN INCHES

TOLERANCES ARE:

FRACTIONS DECIMALS ANGLES

± 1/16 ± .X ± 0.1 ± 0.5°

± .XX ± 0.06

± .XXX ± 0.01

DO NOT SCALE DRAWING

DRAWING SIZE ANSI A

SECTION A-A

TYPICAL CROSS MEMBER DETAIL

SEE SH NOTES 1-7

14.75

(TYP)

12.75

(TYP)

20.506.000

(TYP)

39.00

FRONT VIEW

FRAME

SEE SH S-01 FOR TOP VIEW

SEE SH S-02 FOR BOTTOM VIEW

SEE SH NOTES 1-7

RIGHT VIEW

FRAME

SEE SH S-01 FOR TOP VIEW

SEE SH S-02 FOR BOTTOM VIEW

LEFT VIEW

FRAME

SEE SH S-01 FOR TOP VIEW

SEE SH S-02 FOR BOTTOM VIEW

1.75

26.13

19.13

47.63

BOTTOM SURFACE OF THE BASE PLATES

TO BE IN SAME PLANE & FLAT ±0.062

6.000 (TYP)

1.75 (TYP)

Ø.625 DRILL THRU (TYP)

26.06

46.19

12.50 6.000

Ø.625 DRILL THRU (TYP)

(TYP)

(TYP)(TYP)

4.50 (TYP)

8.00

6.00

7.5' PLATFORM

S-04 5/20

LEG A

SHEET NOTES:

1. FOR ITEM 2 QUANTITY REQUIRED IS 2 EACH

2. ALL FILLET WELDS SHALL BE A MINIMUM OF 14" UNLESS OTHERWISE SPECIFIED.

3. ALL WELDS TO BE CONTINOUS UNLESS OTHERWISE SPECIFIED.

4. USE 4043 FILLER WIRE FOR ALL WELDS.

5. GRIND FLUSH TO MATERIAL ON TOP.

6. ALL MACHINED SURFACES FINISH TO BE 125 RMS

7. WEIGHT:103.5 LBS

TOP VIEW

LEG A

SEE SH NOTES 1-7

BOTTOM VIEW

LEG A

SEE SH NOTES 1-7

FRONT VIEW

LEG A

SEE SH NOTES 1-7

RIGHT VIEW

LEG A

SEE SH NOTES 1-7

14.00

12.00 9.500

(TYP)

11.500

(TYP)

Ø.875 (TYP)

UNLESS OTHERWISE SPECIFIED:

DRAWINGS ARE IN INCHES

TOLERANCES ARE:

FRACTIONS DECIMALS ANGLES

± 1/16 ± .X ± 0.1 ± 0.5°

± .XX ± 0.06

± .XXX ± 0.01

DO NOT SCALE DRAWING

DRAWING SIZE ANSI A

8.0 6.0

81.50

90.00°

8.00

(TYP)

6.75

(TYP)

6.34

(TYP)

5.18 (TYP)

4.00 (TYP)

.50 (TYP)

8.00 (TYP)

.50 (TYP)

3.00 (TYP)

M5 (TYP)

45° X 1.0 (TYP)

M5 90.00°

1.251.25

12.00

14.00

1.25

7.750

(TYP)

9.500

(TYP)

Ø.875 (TYP)

M5 (TYP)

7.5' PLATFORM

S-05 6/20

LEG B

TOP VIEW

LEG B

SEE SH NOTES 1-7

BOTTOM VIEW

LEG B

SEE SH NOTES 1-7

FRONT VIEW

LEG B

SEE SH NOTES 1-7

RIGHT VIEW

LEG B

SEE SH NOTES 1-7

12.00

14.00

Ø.875 (TYP)

UNLESS OTHERWISE SPECIFIED:

DRAWINGS ARE IN INCHES

TOLERANCES ARE:

FRACTIONS DECIMALS ANGLES

± 1/16 ± .X ± 0.1 ± 0.5°

± .XX ± 0.06

± .XXX ± 0.01

DO NOT SCALE DRAWING

DRAWING SIZE ANSI A

6.0

8.0

SHEET NOTES:

1. FOR ITEM 3 QUANTITY REQUIRED IS 2 EACH

2. ALL FILLET WELDS SHALL BE A MINIMUM OF 14" UNLESS OTHERWISE SPECIFIED.

3. ALL WELDS TO BE CONTINOUS UNLESS OTHERWISE SPECIFIED.

4. USE 4043 FILLER WIRE FOR ALL WELDS.

5. GRIND FLUSH TO MATERIAL ON TOP.

6. ALL MACHINED SURFACES FINISH TO BE 125 RMS

7. WEIGHT:103.5 LBS

90.00°

81.50

.50 (TYP)

3.00 (TYP)

8.00 (TYP)

.50 (TYP)

4.00 (TYP)

5.18 (TYP)

8.00

(TYP) 6.75

(TYP)

6.34

(TYP)

M5 (TYP)

(TYP)

(TYP)(TYP)

45° X 1.0 (TYP)

45°X 1.0 (TYP)

90.00°

1.25

11.500

(TYP)

9.500

(TYP)

9.500

(TYP)12.00

14.00

7.750

(TYP)

1.25

Ø.875 (TYP)

7.5' PLATFORM

S-06 7/20

BRACING

UNLESS OTHERWISE SPECIFIED:

DRAWINGS ARE IN INCHES

TOLERANCES ARE:

FRACTIONS DECIMALS ANGLES

± 1/16 ± .X ± 0.1 ± 0.5°

± .XX ± 0.06

± .XXX ± 0.01

DO NOT SCALE DRAWING

DRAWING SIZE ANSI ASHEET NOTES:

1. FOR ITEM 4 QUANTITY REQUIRED IS 4 EACH.

2. FOR ITEM 5 QUANTITY REQUIRED IS 4 EACH

3. ALL MACHINED SURFACES FINISH TO BE 125RMS.

FRONT VIEW

SIDE LEG BRACE

SEE SH NOTES 1&2

WEIGHT:17.3 LBS

FRONT VIEW

FRONT LEG BRACE

SEE SH NOTES 1&2

WEIGHT:16.3 LBS

79.33

75.83

84.50

81.00

1.38 (TYP)

1.75

Ø.875

(TYP)

Ø.875

(TYP)

1.75

7.5' PLATFORM

S-07 8/20

MWWL RAIL (1)

FRONT VIEW

MWWL RAIL

SEE SH NOTES 1-8

RIGHT VIEW

MWWL RAIL

SEE SH S-08 FOR TOP AND BOTTOM VIEW

SEE SH NOTES 1-8

UNLESS OTHERWISE SPECIFIED:

DRAWINGS ARE IN INCHES

TOLERANCES ARE:

FRACTIONS DECIMALS ANGLES

± 1/16 ± .X ± 0.1 ± 0.5°

± .XX ± 0.06

± .XXX ± 0.01

DO NOT SCALE DRAWING

DRAWING SIZE ANSI A

SHEET NOTES:

1. FOR ITEM 8 QUANTITY REQUIRED IS 1 EACH.

2. ALL GROOVE WELDS SHALL BE FULL JOINT PENETRATION.

3. ALL GROOVE WELDS SHALL HAVE A 0.12" ROOT OPENING.

4. ALL FILLET WELDS SHALL BE A MINIMUM OF 1/4" UNLESS OTHERWISE SPECIFIED.

5. ALL WELDS TO BE CONTINUOUS UNLESS OTHERWISE SPECIFIED.

6. USE 4043 FILLER WIRE FOR ALL WELDS.

7. ALL MACHINED SURFACES FINISH TO BE 125RMS.

8. WEIGHT: 243 LBS.

M10

31.00

59.50

21.19

(TYP)

42.00 (TYP)

48.75

9.19

(TYP)

9.19

(TYP)

24.00

88.00

(TYP)

(TYP)(TYP)

(TYP)

(TYP)(TYP)

(TYP)(TYP)(TYP)(TYP)

(TYP)

5.63

3.13

7.38

1.25

Ø.563 THRU ALL

12 PLACES TOTAL

7.5' PLATFORM

S-08 9/20

MWWL RAIL (2)

TOP VIEW

MWWL RAIL

SEE SH S-07 FOR FRONT AND RIGHT VIEW

SEE SH NOTES 1-5

BOTTOM VIEW

MWWL RAIL

SEE SH S-07 FOR FRONT AND RIGHT VIEW

SEE SH NOTES 1-5

UNLESS OTHERWISE SPECIFIED:

DRAWINGS ARE IN INCHES

TOLERANCES ARE:

FRACTIONS DECIMALS ANGLES

± 1/16 ± .X ± 0.1 ± 0.5°

± .XX ± 0.06

± .XXX ± 0.01

DO NOT SCALE DRAWING

DRAWING SIZE ANSI A

SHEET NOTES:

1. ALL GROOVE WELDS SHALL BE FULL JOINT PENETRATION.

2. ALL FILLET WELDS SHALL BE A MINIMUM OF 1/4".

3. ALL WELDS TO BE CONTINUOUS UNLESS OTHERWISE SPECIFIED.

4. USE 4043 FILLER WIRE FOR ALL WELDS.

5. ALL MACHINED SURFACES FINISH TO BE 125RMS.

M11

(TYP)

(TYP)(TYP)

92.00

8.63

2.13

26.5026.50

55.00

4.50

(TYP)

4.50

(TYP)

2.50

35.75

2.13

Ø.625 (TYP)

ISOMETRIC VIEW

MWWL RAIL

6.000

(TYP)

7.5' PLATFORM

S-09 10/20

CORNER RAIL (1)

FRONT VIEW

CORNER RAIL

SEE SH S-10 FOR TOP AND BOTTOM VIEW

SEE SH NOTES 1 & 3-9

RIGHT VIEW

CORNER RAIL

SEE SH S-10 FOR TOP AND BOTTOM VIEW

SEE SH NOTES 1 & 3-9

UNLESS OTHERWISE SPECIFIED:

DRAWINGS ARE IN INCHES

TOLERANCES ARE:

FRACTIONS DECIMALS ANGLES

± 1/16 ± .X ± 0.1 ± 0.5°

± .XX ± 0.06

± .XXX ± 0.01

DO NOT SCALE DRAWING

DRAWING SIZE ANSI A

SHEET NOTES:

1. FOR ITEM 9 QUANTITY REQUIRED IS 1 EACH.

2. FOR ITEM 10 QUANTITY REQUIRED IS 8 EACH.

3. ALL GROOVE WELDS SHALL BE FULL JOINT PENETRATION.

4. ALL GROOVE WELDS SHALL HAVE A 0.12" ROOT OPENING.

5. ALL FILLET WELDS SHALL BE A MINIMUM OF 1/4" UNLESS OTHERWISE SPECIFIED.

6. ALL WELDS TO BE CONTINUOUS UNLESS OTHERWISE SPECIFIED.

7. USE 4043 FILLER WIRE FOR ALL WELDS.

8. ALL MACHINED SURFACES FINISH TO BE 125RMS.

9. WEIGHT: 104 LBS.

M12

.50

.506.00

4.25

45° X 1.0 (TYP)

26.50

45.00

55.00

21.50

42.00

(TYP)

21.19

FRONT VIEW

RAIL GUSSET

SEE SH NOTE 2

(8 PLACES)

(TYP)

(TYP)(TYP)

M13

(TYP)(TYP)

M10

7.5' PLATFORM

S-10 11/20

CORNER RAIL (2)

TOP VIEW

CORNER RAIL

SEE SH S-09 FOR FRONT AND RIGHT VIEW

SEE SH NOTES 1-4

RIGHT VIEW

CORNER RAIL

SEE SH S-09 FOR FRONT AND RIGHT VIEW

SEE SH NOTES 1-4

UNLESS OTHERWISE SPECIFIED:

DRAWINGS ARE IN INCHES

TOLERANCES ARE:

FRACTIONS DECIMALS ANGLES

± 1/16 ± .X ± 0.1 ± 0.5°

± .XX ± 0.06

± .XXX ± 0.01

DO NOT SCALE DRAWING

DRAWING SIZE ANSI A

SHEET NOTES:

1. ALL FILLET WELDS SHALL BE A MINIMUM OF 1/4" UNLESS OTHERWISE SPECIFIED.

2. ALL WELDS TO BE CONTINUOUS UNLESS OTHERWISE SPECIFIED.

3. USE 4043 FILLER WIRE FOR ALL WELDS.

4. ALL MACHINED SURFACES FINISH TO BE 125RMS.

ISOMETRIC VIEW

CORNER RAIL

SEE SH S-09 FOR FRONT AND RIGHT VIEW

SEE SH NOTES 1-4

M11

1.50

6.00

3.00 (TYP)

6.00 (TYP)

45.00

1.50

26.50

26.00 18.50

6.00

3.00 (TYP)

56.00

Ø.625 (TYP)

1-3(TYP)

45° X 1.0 (TYP)

7.5' PLATFORM

S-11 12/20

SPONSON

FRONT VIEW

MWWL RAIL SPONSON

SEE SH NOTES 1 & 3-6

WEIGHT:6.133 LBS

RIGHT VIEW

MWWL RAIL SPONSON

SEE SH NOTES 1 & 3-6

UNLESS OTHERWISE SPECIFIED:

DRAWINGS ARE IN INCHES

TOLERANCES ARE:

FRACTIONS DECIMALS ANGLES

± 1/16 ± .X ± 0.1 ± 0.5°

± .XX ± 0.06

± .XXX ± 0.01

DO NOT SCALE DRAWING

DRAWING SIZE ANSI ASHEET NOTES:

1. FOR ITEM 11 QUANTITY REQUIRED IS 5 EACH.

2. FOR ITEM 12 QUANTITY REQUIRED IS 2 EACH.

3. ALL FILLET WELDS SHALL BE A MINIMUM OF 1/4" UNLESS OTHERWISE SPECIFIED.

4. ALL WELDS TO BE CONTINUOUS UNLESS OTHERWISE SPECIFIED.

5. USE 4043 FILLER WIRE FOR ALL WELDS.

6. ALL MACHINED SURFACES FINISH TO BE 125RMS.

FRONT VIEW

CORNER RAIL SPONSON

SEE SH NOTES 2-6

WEIGHT:

RIGHT VIEW

CORNER RAIL SPONSON

SEE SH NOTES 2-6

9.50

4.50

6.000

1.75

TOP VIEW

MWWL RAIL SPONSON

SEE SH NOTES 1 & 3-6

TOP VIEW

CORNER RAIL SPONSON

SEE SH NOTES 2-6

Ø.625 (TYP)

1.756.000

1.75

Ø.625 (TYP)

3.00

.50

9.00

7.63

3.00

(TYP)

6.000

1.75

Ø.625 (TYP)

9.50

1.75

6.000

1.75 (TYP)

Ø.625 (TYP)

6.00

.50

6.00

.50

45° X 1.0 (TYP)

(TYP)(TYP)

(TYP)(TYP) M9 M9

M13

7.5' PLATFORM

S-12 13/20

LADDER SUPPORT

FRONT VIEW

LADDER SUPPORT

SEE SH NOTES 1,2

WEIGHT:2 LBS

RIGHT VIEW

LADDER SUPPORT

SEE SH NOTES 1,2

UNLESS OTHERWISE SPECIFIED:

DRAWINGS ARE IN INCHES

TOLERANCES ARE:

FRACTIONS DECIMALS ANGLES

± 1/16 ± .X ± 0.1 ± 0.5°

± .XX ± 0.06

± .XXX ± 0.01

DO NOT SCALE DRAWING

DRAWING SIZE ANSI A

SHEET NOTES:

1. FOR ITEM 13 QUANTITY REQUIRED IS 2 EACH.

2. ALL MACHINED SURFACES FINISH TO BE 125RMS.

TOP VIEW

LADDER SUPPORT

SEE SH NOTES 1,2

8.00

5.00

.32

.19

1.25 (TYP)

4.500

Ø.625 (TYP)

2.75

TOP VIEW

LADDER SUPPORT

SEE SH NOTES 1,2

TOP VIEW

LADDER SUPPORT

SEE SH NOTES 1,2

ISOMETRIC VIEW

7.5' PLATFORM

S-13 14/20

GRATING

TOP VIEW

DMES GRATE

WEIGHT:16.05 LBS TOP VIEW

MW EXTENSION GRATE

WEIGHT:9.8 LBS

SHEET NOTES:

1. FOR ITEM 14 QUANTITY REQUIRED IS 1 EACH.

2. FOR ITEM 15 QUANTITY REQUIRED IS 1 EACH.

3. FOR ITEM 16 QUANTITY REQUIRED IS 1 EACH.

4. FOR ITEM 17 QUANTITY REQUIRED IS 1 EACH.

5. SEE ITEM LIST FOR GRATING SPECIFICATIONS

6. FOR FIBERGLASS GRATE ITEMS 14-17 TOLERANCES ARE +1/8", -5/16" (FIBERGRATE STANDARD TOLERANCES)

7. COAT ALL CUT EDGE WITH MCMASTER-CARR 6253T98 EPOXY SEALANT AEROSOL SPRAY OR EQUVALENT.

TOP VIEW

DECK A

WEIGHT:46.58 LBS

28.75

16.75

70.75

33.25

70.75

18.25

58.75

3.00

10.75

TOP VIEW

DECK B

SWEIGHT:25.92 LBS

ISO VIEW

7.5' PLATFORM

AS-01 15/20

PLATFORM ASSEMBLY

ISOMETRIC VIEW

FRAME AND LEG ASSEMBLY

SEE SH NOTES 1-5

SHEET NOTES:

1. CONTACT DDET PRIOR TO USING THIS DESIGN SO DESIGN

CRITERIA CAN BE VERIFIED.

2. LEGS ARE TO BE ANCHORED USING 3/4-10UNC ANCHORS.

EMBEDMENT SHALL BE SPECIFIED ON INSTALLATION DRAWING.

3. INSTALLATION DRAWING REFERS TO A SEPARATE DRAWING

THAT CALLS FOR THIS ASSEMBLY TO BE INSTALLED

4. ALL FASTENERS ARE TO BE INSTALLED WITH ANTI-SEIZE UNLESS

OTHERWISE STATED.

3 3

(4)

(8)

(4)

(2, 4 PLACES)

(4, 4 PLACES)

(2, 4 PLACES)

(4 PLACES)

(3, 4 PLACES)

(4 PLACES)

(2, 4 PLACES)

(4)

(8)

(4) 23

(4)

(8)

(4)

(2, 4 PLACES)

(4, 4 PLACES)

(2, 4 PLACES)

(4 PLACES)

(4)

(8)

(4)

7.5' PLATFORM

AS-02 16/20

SPONSON ASSEMBLY

ISOMETRIC VIEW

SPONSON ASSEMBLY

(2 PLACES)

(2, 2 PLACES)

(2 PLACES)11

(4)

(2)

(2 PLACES)

(2, 2 PLACES)

(4, 2 PLACES)

(2, 2 PLACES)

(4)

(2)

(2 PLACES)

(4, 2 PLACES)

(2, 2 PLACES)

7.5' PLATFORM

AS-03 17/20

RAILING & GRATING ASSEMBLY

TOP VIEW

RAILING & GRATING ASSEMBLY

SEE SH NOTES 1-4

SHEET NOTES:

1. ENSURE GRATING DOES NOT INTERFERE WITH INSTALLATION OF DMES (ITEM 20, SEE

SH AS-04), CUT GRATING AS REQUIRED.

2. TO SECURE GRATING DRILL Ø0.31 HOLES IN CHANNEL OR PLATE. HOLD DOWN CLIPS TO

BE INSTALLED IN ACCORDANCE WITH FIBERGRATE'S "GUIDELINES FOR THE ENGINEER &

DESIGNER, SECTION 2.3".

3. SECURE GRATING TO 2 X 6 X 0.25, RECT TUBE AS REQUIRED.

4. LADDER IS TO BE ANCHORED USING 3/8-16UNC ANCHORS. EMBEDMENT SHALL BE

SPECIFIED ON INSTALLATION DRAWING.

3.4

3.3

(SEE SH NOTES 1 & 3)

(AS NEEDED)

(SEE SH NOTE 2) 17

(SEE SH NOTE 2)

(AS NEEDED)

(SEE SH NOTE 2)

(6)

(12)

(6)

(12)

(24)

(12)

(SEE SH NOTE 4)

(4)

(8)

(4)

7.5' PLATFORM

AS-04 18/20

DMES ASSEMBLY

ELEVATION VIEW

DMES ASSEMBLY

(8)

(16)

(8)

7.5' PLATFORM

S-14 19/20

O'KEEFE'S MODEL 504 ORDER SHEET

132" 90"

18-3/8" 6-3/8"

SHEET NOTES:

1. LADDER SECURITY DOOR TO BE INSTALLED IN A LEFT-HANDED CONFIGURATION (HINGE

ON THE LEFT SIDE OF THE LADDER).

2. LADDER SECURITY DOOR TO BE SECURED WITH FOUR-DIGIT COMBINATION LOCK.

7.5' PLATFORM

G-02 20/20

ITEM LIST

GENERAL NOTES:

1. FOR ANY ITEMS WITH "BUILD TO PRINT" IN REMARKS, SEE REFERENCED DRAWING

FOR

2. ADDITIONAL FASTENERS REQUIRED FOR INSTALL.

3. ALL FASTENERS ARE TO BE SS 316, AND CONFORM TO ASTM F593/F594 UNLESS

OTHERWISE

4. STATED.

5. ALL FASTENERS ARE TO BE INSTALLED WITH ANTI-SEIZE UNLESS OTHERWISE

STATED.

6. ALL DIMENSIONS ARE IN INCHES AND FEET UNLESS OTHERWISE STATED.

7. ABBREVIATIONS USED IN THIS DRAWING ARE AS FOLLOWS:

8. SH = SHEET GEN = GENERAL TYP = TYPICAL

9. EA = EACH ABV = ABOVE PL = PLACES

10. POC: (240) 533-0494, NOAA, SILVER SPRING, MD.

ITEM LIST

ITEM QTY DESCRIPTION REMARKS

M1 - 3 X 6 X 0.25, RECTANGULAR TUBE, 6061-T6 AL -

M2 - 2 X 6 X 0.25, RECTANGULAR TUBE, 6061-T6 AL -

M3 - C6 X 3.63, AM STD CHANNEL, 6061-T6 AL -

M4 - 3 X 3 X 0.375, ANGLE, 6061-T6 AL -

M5 - 0.5 THK, PLATE, 6061-T6 AL -

M6 - 6 X 8 X 0.375, RECTANGULAR TUBE, 6061-T6 AL -

M7 - 3 X 4 X 0.375, ANGLE, 6061-T6 AL -

M8 - 1 DEEP X 1-1/2 X 1-1/2 MESH, MOLDED FIBERGLASS

GRATING, GRAY, MENISCUS OR GRIT TOP

FIBERGRATE CORVEX RESIN OR EQUVALENT, 4'X12'

SHEETS AVAILABLE

M9 - 6 X 6 X 0.375, ANGLE, 6061-T6 AL -

M10 - 3 X 3 X 0.25, SQUARE TUBE 6061-T6 AL -

M11 - 0.375 THK, PLATE, 6061-T6 AL -

M12 - 4 X 0.25 THK, FLAT BAR, 6061-T6 AL -

M13 - 0.25 THK, PLATE, 6061-T6 AL -

M14 - 3 X 3 X 0.25, ANGLE, 6061-T6 AL NO LO0NGER REQUIRED

1 1 FRAME SEE SH S-01 - S-03 FOR DETAILS

2 2 LEG A SEE SH S-04 FOR DETAILS

3 2 LEG B SEE SH S-05 FOR DETAILS

4 4 SIDE BRACE SEE SH S-06 FOR DETAILS

5 4 FRONT BRACE SEE SH S-06 FOR DETAILS

6 - DMES CLAMP NO LONGER REQUIRED

7 - 1-1/2 NPS PIPE BRACKET NO LONGER REQUIRED

8 1 MWWL RAIL SEE SH S-07 & S-08 FOR DETAILS

9 1 CORNER RAIL SEE SH S-09 & S-10 FOR DETAILS

10 8 RAIL GUSSET SEE SH S-09 FOR DETAILS

11 6 MWWL RAIL SPONSON SEE SH S-11 FOR DETAILS

12 3 CORNER RAIL SPONSON SEE SH S-11 FOR DETAILS

13 2 LADDER SUPPORT SEE SH S-12 FOR DETAILS

14 1 DMES GRATE SEE SH S-13 FOR DETAILS

15 1 MAIN GRATE SEE SH S-13 FOR DETAILS

16 1 MWWL GRATE SEE SH S-13 FOR DETAILS

17 1 SIDE GRATE SEE SH S-13 FOR DETAILS

18 - QUICK-INSTALL SAFETY RAILING WITH TOEBOARD, 2' 0"

LG, AL NO LONGER REQUIRED

19 1 ALUMINUM ACCESS LADDER O'KEEFE'S, INC. MODEL NO:504 SEE SH S-14 FOR

DETAILS

20 1 DMES_60X60X15 ****NOTE ERROR WITH REV E BUILD TO PRINT-FOR

DETAILS SEE DRAWING "DMES_60X60X15, REV E"

21 16 3/4-10UNC X 2-1/2 LG, FULLY THREADED HEX HD SCREW,

SS316 -

22 48 3/4 WASHER, SS316 -

23 24 3/4-10UNC NYLON INSERT LOCK NUT, SS316 -

24 - 3/4-10UNC X 11 LG, THREADED ROD, SS316 -

25 8 3/4-10UNC X 2-1/4 LG, FULLY THREADED HEX HD SCREW,

SS316 -

26 16 5/8-11UNC X 2-1/4 LG, PARTIALLY THREADED HEX HD

SCREW, SS316 -

27 40 5/8 WASHER, SS316 -

28 20 5/8-11UNC NYLON INSERT LOCK NUT, SS316 -

ITEM LIST

ITEM QTY DESCRIPTION REMARKS

29 4 5/8-11UNC X 2-1/2 LG, PARTIALLY THREADED HEX HD

SCREW, SS316 -

30 12 5/8 WASHER, 0.14 THK, SS316 MCMASTER-CARR PART NO: 91525A340 OR

EQUIVALENT

31 14 1/2-13UNC X 8-1/2 LG, THREADED ROD, SS316 -

32 80 1/2 WASHER, SS316 -

33 54 1/2-13UNC NYLON INSERT LOCK NUT, SS316 -

34 18 1/2-13UNC X 1-3/4 LG, FULLY THREADED HEX HD SCREW,

SS316 -

35 4 1/2-13UNC X 1-1/2 LG, FULLY THREADED HEX HD SCREW,

SS316 -

36 - 3/8 WASHER, SS316 NO LONGER REQUIRED

37 - 3/8-16UNC NYLON INSERT LOCK NUT, SS316 NO LONGER REQUIRED

38 - 3/8-16UNC X 4-1/4 LG, PARTIALLY THREADED HEX HD

SCREW, SS316 NO LONGER REQUIRED

39 - END PANEL CLIP ASSEMBLY FOR SQUARE MESH, SS316 NO LONGER REQUIRED

40 72 HOLD DOWN CLIP FOR SQUARE MESH, SS316 MCMASTER-CARR PART NO: 7010T71 OR

EQUIVALENT

41 72 1/4-20UNC X 2-1/4 LG, FULLY THREADED HEX HD SCREW,

SS316 -

42 150 1/4 WASHER, SS316 -

43 72 1/4-20UNC NYLON INSERT LOCK NUT, SS316 -

44 8 3/8, 10 WRAP DIAMETER, STAINLESS STEEL TIE, SS316 BAND-IT PART NO: AS4159 OR EQUIVALENT

45 4 1/2-13UNC X 3-1/2 LG, PARTIALLY THREADED HEX HD

SCREW, SS316 -

File details come from the government source that posted it. Updated Apr 13, 2026.