Am0002_Drawings.pdf

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...\30500 - Construction E&D\BB63\30DA0 - Plans & Specs\CAD_BIM\_Sheets\BB63 - Repair Raw Water Header, Unwatering Valves, Station Dra

SOLICITATION NO.:

CONTRACT NO.:

ISSUE DATE:

of Engineers

US Army Corps

®of Engineers

US Army Corps

U .S

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Omaha District

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STATION DRAINAGE

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BIG BEND DAM, SOUTH DAKOTA

REPAIR RAW WATER HEADER, UNWATERING VALVES

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AUGUST 2018

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ADVERTISEMENTADVERTISEMENT

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W9128F-18-B-0003

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EA. SIDE

6" MIN.

EQUIPMENT DIMENSION

2" CVR.

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OR SEALANT

STOPPING COMPOUND

MIN. 1" THICKNESS FIRE

OR SAFING INSULATION

PACKED INTO OPENING

INSULATION FIRMLY

MINERAL WOOL

PIPE

NOT TO SCALE

PIPE PENETRATION THROUGH FLOOR

NOTES:

1. PERFORM GROUND PENETRATING RADAR (GPR) TO LOCATE REINFORCEMENT PRIOR TO

DRILLING HOLE. HOLE SHALL BE LOCATED SUCH THAT DRILLING AVOIDS EXISTING

REINFORCEMENT AND BEAMS. DRILL HOLE LOCATIONS SHALL BE APPROVED BY THE

CONTRACTING OFFICER PRIOR TO DRILLING HOLES.

2. CORE DRILL A 4" HOLE FOR 3" DIAMETER PIPES AND 7" HOLE FOR 6" DIAMETER PIPE. CORE DRILL

SIZES FOR VALVE STEMS SHALL BE OF A SIZE TO PROVIDE A HOLE THAT IS APPROXIMATELY 1"

LARGER IN DIAMETER THEN THE VALVE STEM SIZE. SUBMIT CORE DRILLING METHODS TO THE

GOVERNMENT FOR APPROVAL.

3. SEE SPECIFICATION SECTION 07 84 00 "FIRESTOPPING" FOR ADDITIONAL REQUIREMENTS

RELATING TO PIPE PENETRATION MATERIALS.

4. THE FLOOR WAS MEASURED TO BE 11" THICK. RECORD DRAWINGS SHOW THAT THE SLAB IS 8"

THICK, WHICH APPEARS TO BE INCORRECT.

3. SAW CUT EXISTING EQUIPMENT PAD DOWELS AT THE SLAB SURFACE.

REPAIRED BY THE CONTRACTOR AT NO ADDITIONAL COST TO THE GOVERNMENT.

EXISTING CONCRETE SLAB. ANY DAMAGE TO THE EXISTING SLAB SHALL BE

2. REMOVE EXISTING CONCRETE PADS WITHOUT CAUSING DAMAGE TO THE

REQUIREMENTS.

1. SEE SPECIFICATION SECTION 03 01 32 CONCRETE REMOVAL FOR ADDITIONAL

CONCRETE PAD DEMOLITION NOTES:

12"

CONCRETE EQUIPMENT PAD

NOT TO SCALE

EXISTING SLAB

CONCRETE EQUIPMENT PAD

3/4" CHAMFER, TYP

(SEE NOTE 1)

EMBEDMENT

4" MIN.

#5 @ 12" WITH

#4 @ 12" E.W.

EQUIPMENT SUPPLIER.

PLACEMENT WITH

COORD. SIZE AND

S.S. ANCHOR BOLT.

VARIES

NOTES:

1. DRILL AND EPOXY REINFORCEMENT INTO EXISTING STRUCTURAL SLAB. DRILL HOLE, CLEAN, AND ANCHOR

DOWELS IN ACCORDANCE WITH EPOXY MANUFACTURER'S RECOMMENDATIONS. EPOXY SHALL BE SIKA

ANCHORFIX-1 OR APPROVED EQUAL.

2. SEE SPECIFICATION SECTION 03 30 53 MISCELANEOUS CAST-IN-PLACE CONCRETE FOR CONCRETE

REQUIREMENTS.

3. ANCHOR BOLTS SHALL BE CAST-IN-PLACE AND SHALL NOT BE INSTALLED AFTER CONCRETE IS PLACED.

4. PERFORM GROUND PENETRATING RADAR (GPR) TO LOCATE EXISTING SLAB REINFORCEMENT PRIOR TO

DRILLING HOLE FOR EPOXY REINFORCEMENT. HOLE SHALL BE LOCATED SUCH THAT DRILLING AVOIDS EXISTING

SLAB REINFORCEMENT.

5. CONTRACTOR SHALL SUBMIT THE LOCATION AND SIZE OF THE EQUIPMENT PADS FOR APPROVAL. EQUIPMENT

PAD SIZE AND LOCATION SHALL BE APPROVED PRIOR TO EQUIPMENT PAD CONSTRUCTION.

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