Specs #2

80' ALUMINUM TRUSS

STYLE ADA GANGWAY

TRANSITION PLATE

8.33% MAX SLOPE

OVER TIDE RANGE,

SEE DETAIL D7

PIER HEAD

PLATFORM

NONSYMMETRIC PADEYE W/ 34"Ø

HOLE EACH END OF HINGE,

GANGWAY CONNECTION BY WELD

OR BOLTS BY CONTRACTOR

3'-10"

GUARDRAIL

1 12" HANDRAIL

ALUMINUM TREAD PLATE

WALKING SURFACE

3'- 2"3'-

9"

STRUCTURAL TUBE

CROSS MEMBER

2"

10"x10"x3

8" RIBBED

ALUMINUM ANGLE

2"x81

2"x3

8" ANODIZED

ALUMINUM ANGLE (2) 34"Øx10" SS

BOLTS, 16" OC

35 16

EXISTING (2) 4"X10" TIMBER

STRINGER & END CAP BEAM

16"Øx3" PAN HEAD

SS BOLTS, 12" OC

HINGE POCKET W/

SCH 80 HINGE PIN,

SEE NOTE 11

RIBBED

DECKING

BOTTOM CHORD TUBE -

CROSS TUBE & CHANNEL

END MEMBERS NOT SHOWN

UHMW FILLER BOARD ENTIRE WIDTH

OF HINGE PLATE, CUT TO SIZE

INTERIOR DIAGONAL

TUBES

HOOP ENDS,

BENT PIPE

EXISTING 54"

DECKING

BOARDS, TYP

EXISTING

4"X10" TIMBER

STRINGER

NONSYMMETRIC PADEYE W/ 34"Ø HOLE,

EACH END OF HINGE, ANGLE WELDED

CONNECTION BY CONTRACTOR

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G1 C501

80' ADA GANGWAY SECTION

SCALE: 1/4" = 1'-0"

NOTES:

1. THESE GANGWAY DETAILS ARE FOR REFERENCE ONLY. CONTRACTOR IS RESPONSIBLE FOR DESIGNING AND INSTALLING PER THESE DRAWINGS.

THE INTENT IS NOT TO MODIFY THE EXISTING DOCK SYSTEM, BUT TO ATTACH IT TO THE EXISTING PIERHEAD PER DETAIL F1 AND ENSURE THE LANDING SURFACE MATCHES THE FLOATING DOCKS. THE EXISTING FLOATING DOCKS ARE DESIGNED TO ACCOMMODATE THE DEAD WEIGHT OF

THE GANGWAY AND A LIVE LOAD OF 100PSF.

2. WELDERS SHALL BE QUALIFIED IN ACCORDANCE WITH THE REQUIREMENTS OF AWS D1.2.

3. THE MAXIMUM ALLOWABLE DEFLECTION UNDER THE VERTICAL DESIGN LOAD SHALL EQUAL THE 80-FOOT SPAN DIVIDED BY 240.

4. DECK AND STRUCTURAL COMPONENTS SHALL BE DESIGNED WITH A MINIMUM SAFETY FACTOR ON WORKING STRESS AS SPECIFIED IN AA ADM-1

FOR BRIDGE TYPE STRUCTURES. FOR NON-ALUMINUM STRUCTURAL COMPONENTS, SIMILAR SAFETY FACTORS SHALL APPLY.

5. THE VERTICAL DESIGN LOAD SHALL BE THE COMBINATION OF THE DEAD WEIGHT OF THE STRUCTURE, AND EITHER LIVE LOAD CASE A OR CASE B, WHICHEVER GOVERNS.

CASE A SHALL BE A UNIFORM LIVE LOAD OF 100 PSF OF GANGWAY WALKING SURFACE AREA.

CASE B SHALL BE A CONCENTRATED LIVE LOAD OF 400 LBS APPLIED ANYWHERE ON THE DECK SURFACE.

6. THE WALKING SURFACE OF THE GANGWAY, INCLUDING THE TRANSITION AND HINGE PLATES, SHALL BE PROVIDED WITH A NON-SKID SURFACE.

7. THE GANGWAYS SHALL BE FITTED WITH A GUARDRAIL ON EACH SIDE OF THE WALKING SURFACE WITH A HANDRAIL EXTENDING A MINIMUM OF 12

INCHES (1 FOOT) BEYOND THE ENDS OF THE STRUCTURE, WITH RETURN AT THE ENDS. THE RAILS SHALL BE FABRICATED OF ALUMINUM PIPE OR

TUBING.

8. DESIGN SHALL ALSO CONSIDER STRESSES RESULTING FROM HANDLING AND INSTALLATION.

9. DETAIL C7, TRANSITION PLATE SHALL MAKE A SMOOTH, GAP-FREE TRANSITION BETWEEN THE GANGWAY DECK AND THE FLOATING DOCK. THE

TRANSITION PLATE SHALL BE DESIGNED FOR A MINIMUM 100 PSF LIVE LOAD, BE MADE FROM AT LEAST 0.25-INCH THICK MATERIAL, AND SHALL BE ATTACHED TO THE GANGWAY BY MEANS OF A CONTINUOUS PIPE HINGE. THE TRANSITION PLATE SHALL BE THE FULL WIDTH OF THE GANGWAY AND HAVE A MAXIMUM SLOPE OF 12 (HORIZONTAL):1 (VERTICAL). THE SLIDING EDGE OF THE TRANSITION PLATE SHALL BE FITTED WITH A CONTINUOUS UHMW POLYETHYLENE WEAR BLOCK THAT IS A MINIMUM OF 0.5-INCH THICK, WHICH SHALL BE BEVELED CONFORMING TO CODE

REQUIREMENTS FOR ACCESSIBILITY AND SAFETY.

10. DETAIL F1, PROVIDE A GANGWAY HINGE AT THE GANGWAY PLATFORM END. THE HINGE SHALL BE DESIGNED TO PERMIT ROTATION OF THE GANGWAY IN THE VERTICAL AND HORIZONTAL DIRECTIONS TO ACCOMMODATE FLOAT MOTIONS FOR ALL ENVIRONMENTAL CONDITIONS.

11. THE GANGWAY HINGE SHALL MAKE A SMOOTH, GAP-FREE TRANSITION BETWEEN THE GANGWAY WALKING SURFACE AND THE TIMBER PIER HEAD THE HINGE PLATE SHALL BE DESIGNED FOR A MINIMUM 100 PSF LIVE LOAD, BE MADE OF AT LEAST 0.25-INCH THICK MATERIAL, AND SHALL BE THE

FULL WIDTH OF THE WALKING SURFACE.

12. PRIOR TO ORDERING MATERIALS OR STARTING REPAIRS OF THE GANGWAY, SUBMIT FINAL DESIGN CALCULATIONS SIGNED AND SEALED BY A STATE OF GEORGIA REGISTERED STRUCTURAL ENGINEER. CALCULATIONS SHALL DEMONSTRATE THAT THE GANGWAY IS DESIGNED TO WITHSTAND THE SPECIFIED AND OTHER CODE REQUIRED LOADS WITHOUT DAMAGE THROUGHOUT THE 50-YEAR DESIGN LIFE OF THE GANGWAY.

F7 C501

WATERSIDE SAFETY CATCH

SCALE: 1/2" = 1'-0"

C7 C501

FLOAT SIDE END OF GANGWAY

SCALE: 1/2" = 1'-0"

F1 C501

GANGWAY LANDSIDE HINGE DETAIL

SCALE: 2"=1'

C4 C501

GANGWAY SECTION DETAIL

SCALE: N.T.S.

F4 C501

LANDSIDE SAFETY CATCH

SCALE: 1/2" = 1'-0"