LD7 High Mast Light drawings.PDF

PDF 2 MB Posted May 13, 2025

Attached to: High Mast Light Pole Inspections at 11 Lock Sites
Solicitation number: W912ES25Q0052
Issued by: Department of the Army Corps of Engineers Engineering District St Paul

About this file

Written by GovTribe AI · May 13, 2025

The document is a detailed engineering drawing set for high mast and area light installations at Lock 7 on the Mississippi River in Minnesota, prepared by the U.S. Army Corps of Engineers St. Paul District. The drawings (Sheet 81 of 260) provide comprehensive technical specifications for light pole foundations, electrical conduit routing, grounding systems, and installation details, including plan views, sections, and location details for high mast lights (HMLIW) and area lights. The drawing includes specific notes about existing infrastructure, such as HMLU and HMLD being existing elements, with HMIW to be installed under the current contract.

The technical drawings specify precise engineering requirements, including a 2'-0" diameter light pole base, 4 anchor bolts (1" diameter x 40" long), vertical reinforcing bars, ground pad details, conduit specifications (2" galvanized steel), and grounding components like a 4/0 bare copper ground cable and 3/4" diameter copper-clad steel ground rod. The document is part of a major maintenance project for Lock & Dam No. 7 in La Crescent, Minnesota, with the contract number DACW37-99-8-0013, and was originally designed in August 1999 with an as-built revision in June 2002.

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Other files

File	Type	Posted
W912ES25Q0052-0001 Amendment 1.pdf	PDF	May 13, 2025
W912ES25Q0052 RFQ for High Mast Pole Inspections at LD Sites.pdf	PDF	May 12, 2025

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l t r

C n

'A'

12" TRENCH

PLAN VIEW

I 744<gf f<».

5-•6 -

•6©12"

T-C

SECTION

4 0 -3

5'-0"

HIGH MAST LIGHT

HANDHOLE

GROUT

UNDER

BASE

*4©12"

TYP.

DETAIL

NOTE:

HMLU & HMLD

ARE EXISTING,

HMIW IS INSTALLED

UNDER THIS CONTRACT.

REMOVE EXISTING

SOIL IN FOUNDATION

AREA AS REQUIRED

HMIW

.<f_

,-9,/ -

68/402

HI-MAST LIGHT (INTERMEDIATE WALL)

(1) LOCATION

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

»f

6'-0"

HMLIW

29/418

LIt

26'-0"

INTERMEDIATE WALL

1,-9"

N /5 1 I

CORPS OF ENGINEERS

DETAIL

LOCK 7 IDENTIFICATION SIGN

(1) LOCATION

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

C L6SLIW

, uzL_„----__r-t]

MISSISSIPPI RIVER

DRILL & GROUT

NEW DOWELS

•6 0 12"

3'-6" LONG

EACH FACE

14'-0"

CAST-IN-PLACE

TRENCH FOR

ELECTRICAL

-f

CX]-

TO TRENCH

L7SLIW

29/418

26 3/4" BOLT CIRCLE

FOR ANCHOR BOLTS

CENTERED ON NEW

FOUNDATION

L- EXISTING PIPE '

6'-0"

SECTION

SLEEVES FOR

f AUX. WATER

AND IRRIGATION

2" GALV. STEEL

CONDUIT FROM

EXISTING TRENCH

CONDUIT

GROUNDING

BUSHING

NEW CONCRETE

FOUNDATION FOR

NEW HIGH MAST

LIGHT FIXTURE

GROUND PAD

UNDER BASE

DETAIL

POLE

LOWERING

WINCH

(NOTE 1)-\

BOLT COVER

1.1

APPROX. 1'-5"

CADWEL

*4/0 BARE COPPER

GROUND CABLE

3/4" DIA X 10 FT.

COPPER CLAD STEEL

GROUND ROD

AREA LIGHT

18 REQUIRED ON SITE

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

SIDE VIEW

TOP VIEW

2'-0"

DIA.

-1

All-6 (NOTE 2)

HANDHOLE

GRADE

HINGE

(NOTE 1)

I i I

LIGHT POLE

2" GALVANIZED

STEEL CONDUIT

(4) 1" DIA X 40" LONG

ANCHOR BOLTS ON A

12 1/2" BOLT CIRCLE

(7) *5 VERTICAL

REINFORCING

SPACED EQUALLY

04 0 12" O.C. TIES

1 0 lilli

ALl-18

29/420

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

4 8

EDGE OF

SIDEWALK

OR ROADWAY -d:/

POLE

LOWERING

WINCH

(NOTE 1)

1'-6"

BOLT COVER--

GROUND PAD

UNDER BASE

CADWEL

04/0 BARE COPPER

GROUND CABLE

3/4" DIA X 10 FT.

COPPER CLAD STEEL

GROUND ROD

DETAIL

SIDE VIEW

CENTER OF

LIGHT FIXTURE

p m

1.-L

if) r

LHINGE

(NOTE 1)

/ 1

2'-0"

DIA.

AREA LIGHT

11 REQUIRED IN VISITOR AREA

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

NOTES:

SYMBOL

TOP VIEW

TYPICAL LOCATION DETAIL

HANDHOLE

GRADE

LIGHT POLE

2" GALVANIZED

STEEL CONDUIT

(4) 1" DIA X 40" LONG

ANCHOR BOLTS ON A

12 1/2" BOLT CIRCLE

(7) *5 VERTICAL

REINFORCING

SPACED EQUALLY

*4 0 12" O.C. TIES

VL1-11

29/420

1. POLE LOWERING WINCH & HINGE DETAIL ON 29/442.

2. LUMINAIRE DIMENSIONS MAY VARY AMONG MANUFACTURERS.

AS-BUILT AS OF JUNE 2002

AE APPROVING OFFICIAL,

U.1

DATE

DESIGNED: DAV

CHECKED: BDN

DRAWN. DGS

DESIGNED:

CHECKED

08-02-99

DESCRIPTION

US Army Corps

Il of Engineers St. Paul District

SOL. NO:

9/Illt

DATE

AS-BUILT

LOCK 7 LOCKWORK - STAGE 2

MAJOR MAINTENANCE - MISSISSIPPI RIVER

LOCK & DAM NO. 7 LA CRESCENT,

LOCK ELECTRICAL SYSTEM

LOCK LIGHTING

HIGH MAST AND AREA LIGHTS

CAD FILE NAME. MJ29A440.DGN

DACW37-99-8-0013

DRAWING NUMBER:

M-L7-29/440 ig¢2/

APPROVAL

MINNESOTA

SHT 81

oF 260 a e_Al Ill T

File details come from the government source that posted it. Updated May 13, 2025.