W912ES26QA094-revised attachment 4292026.pdf

US Army Corps of Engineers, Saint Paul District

Lock and Dams Section, Bulkhead Hoist; Picker and Picker lug points:

Photos & description of Lock & Dams Bulkhead Hoist with emphasis on the picking beam and beam attachment points.

Picker Beam is designed to lift and place the stop logs (AKA Bulkheads) visible staked under the hoist and picking beam. The beam locks into the stop logs utilizing a 4.25” diameter round deadbolt picking lug (one on each end of the beam) that moves outward on the left and right side of the picking beam when actuated remotely by the hoist operator. Picking beam is rated to lift the 48K lb bulkheads. Picking beam weighs ~ 8K lbs itself and so the frame of the material basket should be able to support the beam resting on it to lock the deadbolts in. Two deadbolts total; one on each end of the picking beam (one left, and one right):

Bulkhead hoist Lifting beam hooked into a stop log (AKA a Bulkhead) shown below:

Below Photo, Right side Lifting Beam attachment Lugs shown on separate stop logs. We need these type of rigid lifting lugs on the top frame of the material basket so we can utilize the existing picking beam to pick the basket; close up in next photo:

Below photo, Close up of the Right Side stop log lifting lug without the lifting beam on it. Note pie-shaped locator hole for the beam locator and hole for the 4.25” deadbolt which acts as a locked lift point when engaged outward on both ends:

Below photo of picking beam engaged in a stop log (AKA Bulkhead) taken from the right side, showing right deadbolt engaged:

Below photo, close up of lifting beam with right deadbolt engaged in bulkhead lifting lug:

Below Photo, Closeup of the locked in deadbolt on the left side of the lifting beam, locked into stop log:

Below photo is Top-down view from hoist looking at the left side of the picking beam sitting on top of (and locked into) a stop log.

The crude sketch below shows where the material basket would take the place of a bulkhead by locking into the existing picking beam for the purposes of moving equipment and materials from land, across the dam (over the water), and to the land locked island side of the dam and vise versa. Hard framed with steel top to bottom as outlined in the specs provided. The framing design shall remain open (in other words no sheeting around the outside of the basket frame to enclose it). Shall include safety hand rail all the way around and a hinged ramp on right/left ends (orientated with the lifting beam) that swing up and lock into place during transport thereby acting as the enclosure doors at either end. This allows us to drive small equipment on/off from either end.

Below picture is of the Bulkhead Hoist from Bridge elevation view with the picking beam all the way up in the cradle where it rides during all trolling transport across the dam:

Below photo is of the Bulkhead Hoist transporting a stop log (AKA bulkhead) across the face of the dam. The hoist trolleys back and forth across the full length of the dam. Note the extreme tight tolerance between the stop log and the dam piers.

Invision the custom material basket under the picking beam in place of the steel stop log in the photo. It will be critical that the picking points on the basket are at its center point so that it hangs level when empty/loaded.

b6ctbtk3 Stamp

WAR DEPARTMENT

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1 £--1-

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17'-6" To ¢ of Bulkhead.

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SECTION F- F

FINISHED STRUCTURE AS OF AUGUST 1936

CHARACTER

REVISIONS

SEE hAC CLINTIC-MARSHALL CONT. CG 19032 SH„ 4BD, 4DD,2&7

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7 LOYL 76 * of Bulkhead

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Adjustable Guide Plate Assembly Mark-56j2-2

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Weld lo r

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r f rWeld along top ofongle

11- 54 Aivets

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4-8Drill&*10 N.C.thdtap

2'-85

LIFTING PLATE ASSEMBLY

STRUCTURAL SILICON STEEL MARK 54/2-1

MAKE 10 WT 250.62 LBS,

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3 21-Fe-1 6'*4*3-61 l

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Wood fills lix 115"xi'*«fastened with Fl Hd Bronze Wood Screws

SECTION G-G

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SCALE:'= I'- 0"

tight fit

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BOLT STEEL MARK 54/2-3

MAKE 40 WT. 1.21 LBS.

SCALE: FULL SIZE

Make from 898 x 4- LS

Machine Corn

Square r ers yN

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Note:-Weld all Joints

ADJUSTABLE GUIDE PLATE ASSEMBLY

STRUCTURAL SILICON STEEL

MAKE 10

MARK 5/5-2

WT. 84.81 LBS.

(3enerol Notes:-

EmergencyBulkhead-Ro/ler dates-Plan &0€vation -Sheet No. M-L6 55/.

" " Reaction & Guide YYhed Assembiy-Sheet No.M-L6 58 3.

" Details -5heet No.M-L6 584.

" -Roller &-Tainter Gates-Pickup Boom Assembly-Sheet No. M-L6 567.

" Details -Oheet No. M-L6

C

CORPS OF ENGINEERS U. S. ARMY

TIMBER SEAL AT PIPE SEAL

t

SIDE SEAL

6" STD. PIPE

MAKE 2

MISSISSIPPI RIVER

LOCK & DAM NO. 5A

DAM

EMERGENCY BULKHEAD ROLLER GATE

SECTIONS&DETAILS

lf" ?" 6 " 3" 9 1, SCALE: 1 IN.=IFT.

U. S. ENGINEER OFFICE, ST. PAUL, MINN.

SUBMITTED· APPROV

SENIOR ENGINEER JOR COR F ENGINEERS

DRAWN BY. A.H,F. & J. N.G. TRACED BY: L.E.W.

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MARK 54*-4

WT. 401.3 LBS.

1* A#"A I'-4Steel Bar Welded to Pipe

OCTOBER, 1934

CHE BY·

K.K.W.

- M.J. R.

M-LSA-58/2-FS