hs = 1.4' exposureese · 2020. 8. 28. · 30 40 0 30 40 50 60 200' clr 170' clr 324' clr x x x...

60 55 - 5 5 - 35 - 30 - 25 - 20 - 15 - 10 - 5 0 MLLW 5 10 15 20 25 30 35 40 45 50 - 10 - 25 - 30 - 35 - 40 - 45 - 20 - 30 - 40 10 15 20 25 30 40 0 30 40 50 60 200' CLR 170' CLR 324' CLR X X X UPLANDS DEVELOPMENT CONCEPT E SHOWN, CONCEPTS A,B,C & D ALSO POSSIBLE SEAPLANE OPTION NO.1 SHOWN OPTION NO.2 ALSO POSSIBLE SITKA CHANNEL EXISTING SOUTH BREAKWATER SEWARD AVENUE USACE BREAKWATER USACE BREAKWATER MAIN HARBOR ENTRANCE NORTHERLY EXPOSURE Hs = 3.6' Hs = 2.1' Hs = 1.4' Hs = 1.6' ESE EXPOSURE WNW EXPOSURE Hs = 1.6' U.S.C.G. AIR STATION NORTH FLOATING WAVE ATTENUATOR PERMANENT CESSNA 206s (10 EA) DRIVE DOWN GANGWAY 12' X 120' PILE-SUPPORTED TRESTLE 16' x 240' w/ PULLOUT TRANSIENT & LOADING GANGWAY LANDING FLOAT, 46' x 120' SEAPLANE FLOAT TRANSIENT BEAVERS (5 EA) TRANSIENT/LOADING DRIVE DOWN FLOAT, 30' x 200' SEAPLANE HAUL OUT RAMP PERMANENT BEAVERS (4 EA) SEAPLANE RAMP FLOAT 46' x 350' POSSIBLE SE FLOATING WAVE ATTENUATOR, 20' x 600' FUTURE FLOAT EXPANSION 50'x250' 20'x30' VEHICLE TURNAROUND FLOAT ANCHOR, TYP. ANCHOR CHAIN, TYP. SCALE IN FEET 0 100 200 FT. NOTES: Hs H MAX = SIGNIFICANT WAVE HEIGHT 100 YEAR RETURN PERIOD = 1.7 x Hs IS SIMILAR TO MC 6 HOWEVER THE APPROACH TRESTLE HAS BEEN LENGTHED AND REDUCED IN WIDTH. THE DRIVE DOWN GANGWAY HAS BEEN SHORTENED AND REDUCED IN WIDTH. MARINE CONCEPT NO.7 (MC 7) AUGUST 2020 192082.01 SITKA SEAPLANE BASE MC 7 MARINE CONCEPT NO.7 PND PROJECT NO.: APPROVED: DRAWN: DESIGN: CHECKED: SCALE: DATE: SHEET TITLE: PJD CRS CRS CRS 9360 Glacier Highway, Ste. 100 Juneau, Alaska 99801 www.pndengineers.com Fax: 907-586-2099 Phone: 907-586-2093 E N NGI EER S I NC , .

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60

55

- 5

5

- 35

- 30

- 25

- 20

- 15

- 10

- 5

0 MLL

W

5

10

1520 2

5

30

35

40

45

50

- 10

- 25

- 30

- 35

- 40

- 45

- 20

- 30

- 40

10 1520

2530

40

0

30

4050

60

200'CLR

170'

CLR

324'CLR

X

X

X

UPLANDSDEVELOPMENT

CONCEPT E SHOWN,CONCEPTS A,B,C & DALSO POSSIBLESEAPLANE OPTION NO.1 SHOWN

OPTION NO.2 ALSO POSSIBLE

SITKACHANNEL

EXISTINGSOUTHBREAKWATER

SEWA

RD AV

ENUE

USACEBREAKWATER

USACEBREAKWATER

MAINHARBOR ENTRANCE

NORTHERLYEXPOSURE

Hs = 3.6'

Hs = 2.1'

Hs = 1.4'

Hs = 1.6'

ESE

EXPO

SURE

WNW

EXPO

SURE

Hs = 1.6' U.S.C.G.AIR STATION

NORTH FLOATINGWAVE ATTENUATOR

PERMANENTCESSNA 206s(10 EA)

DRIVE DOWN GANGWAY12' X 120'

PILE-SUPPORTED TRESTLE16' x 240' w/ PULLOUT

TRANSIENT & LOADINGGANGWAY LANDING FLOAT, 46' x 120'

SEAPLANE FLOAT

TRANSIENT BEAVERS(5 EA)

TRANSIENT/LOADING DRIVEDOWN FLOAT, 30' x 200'

SEAPLANEHAULOUTRAMP

PERMANENT BEAVERS(4 EA)

SEAPLANE RAMP FLOAT46' x 350'

POSSIBLE SE FLOATINGWAVE ATTENUATOR, 20' x 600'

FUTURE FLOAT EXPANSION50'x250'

20'x30' VEHICLETURNAROUND FLOAT

ANCHOR, TYP.

ANCHOR CHAIN, TYP.

SCALE IN FEET

0 100 200 FT.

NOTES:HsH MAX

= SIGNIFICANT WAVE HEIGHT 100 YEAR RETURN PERIOD= 1.7 x Hs

IS SIMILAR TO MC 6 HOWEVER THE APPROACH TRESTLE HAS BEEN LENGTHED AND REDUCED IN WIDTH.THE DRIVE DOWN GANGWAY HAS BEEN SHORTENED AND REDUCED IN WIDTH.

MARINE CONCEPT NO.7 (MC 7)

AUGUST 2020 192082.01

SITKA SEAPLANE BASE

MC 7MARINE CONCEPT NO.7

PND PROJECT NO.:APPROVED:DRAWN:

DESIGN: CHECKED:SCALE:

DATE:

SHEET TITLE:

PJD

CRSCRS

CRS

9360 Glacier Highway, Ste. 100Juneau, Alaska 99801

www.pndengineers.comFax: 907-586-2099Phone: 907-586-2093

E NN G I E E R S I N C, .

CONCEPT E Uplands.pdfSheets and ViewsE

CONCEPT E Uplands.pdfSheets and ViewsE

CONCEPT E Uplands.pdfSheets and ViewsE