9 ATTACHMENT 2 FOUNDATION CRACK REPAIR Updated.pdf
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- Solicitation number
- 1305M323RNRMA0028
About this file
This document package includes construction drawings and specifications for foundation crack repair work at a federal research facility. The drawings show existing conditions and call out required concrete repairs to basement walls and floor slabs. Repairs include removing unsound concrete, installing additional reinforcing as needed, and applying waterproofing. The specifications provide notes on concrete mix designs, reinforcement details, and waterproofing requirements. Sheet indexes and views are included. The related federal contract opportunity is for repair work at the Great Lakes Environmental Research Laboratory Lake Michigan Field Station Building 1 in Michigan. The solicitation number and agency information are provided.
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±52'-0" (F.V.)
NORTH
SCALE: 1/4" = 1'-0"
ALTERNATE #1: FDN. DRAINS
AND SUMP PIT AROUND
PERIMETER OF BUILDING
BASEMENT FOUNDATION PLAN
'-0
(F
.V
±7'-0"
EXIST. CONC.
PILASTER
S201
S201
S201
S201
NOTE: THE REQUIRED REPAIRS NOTED IN THESE
DRAWINGS MAY NOT BE COMPREHENSIVE. ALL
WALLS SHOULD BE FULLY EXPOSED AND EXAMINED
ON BOTH SIDES TO DETERMINE IF ADDITIONAL REPAIRS
ARE REQUIRED, USING THE APPROPRIATE DETAILS.
EXIST. 6" SLAB-ON-GRADE
SLAB-ON-GRADE REPAIR: ALL NEW SLAB
CONCRETE TO BE 4000 PSI & SHALL
CONTAIN XYPEX C-SERIES ADMIXTURE (OR
APPROVED EQUAL) WITH DOSAGE PER
MANUFACTURERS SPECIFICATIONS.
OPTION 1: TOP EXIST. SLAB W/24" CONC.
W/ 35 LB/CYD STEEL FIBER & 1 LB/CYD
SYNTHETIC FIBER PER DETAIL 1/S301
OPTION 2: TOP EXIST. SLAB W/ 16" CONC.
W/ #5 BARS @ 12" O.C. EA. WAY TOP &
BOTTOM, DOWEL INTO EXISTING
FOUNDATION WALL PER DETAIL 2/S301
OPTION 3: DEMO EXISTING SLAB, EXCAVATE
DOWN AND ADD NEW 36" CONC. SLAB W/
35 LB/CYD STEEL FIBER & 1 LB/CYD
SYNTHETIC FIBER PER DETAIL 3/S301
APPLY WATERPROOFING
MEMBRANE TO EXIST. FDN.
WALL, TYP. ALL EXTERIOR WALLS
S301
TYP.
S301
TYP.
ALTERNATE #1: SUMP
W/ SAND FILTER
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SHEET NO.
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CONCRETE REPAIR NOTES
1. ALL CONCRETE HAS BEEN DESIGNED AND SHALL BE BUILT IN ACCORDANCE WITH THE LATEST
EDITION OF ACI 318.
2. ALL NEW FLOOR SLAB CONCRETE TO HAVE A 28-DAY COMPRESSIVE STRENGTH OF 4000 PSI.
CONCRETE SHALL CONTAIN XYPEX CONCRETE ADDITIVE OR APPROVED EQUAL WITH DOSAGE
PER MANUFACTURERS SPECIFICATIONS.
3. EXISTING LOOSE CONCRETE SHALL BE REMOVED TO SOUND MATERIAL. PRECAUTIONS SHALL
BE TAKEN SUCH THAT THE EXISTING CONCRETE THAT IS TO REMAIN IN PLACE IS NOT
DAMAGED (CRACKS, SPLITS, FURTHER REBAR DAMAGE, ETC.)
4. THE EXISTING REBAR SHALL BE LEFT IN PLACE. THE CONCRETE SURROUNDING THE REBAR
SHALL BE REMOVED TO AN EXTENT THAT THERE WILL BE 1" MIN. CLEARANCE BETWEEN THE
REBAR AND REMAINING CONCRETE.
5. THE EXPOSED EXISTING REINFORCING STEEL SHALL BE THOROUGHLY CLEANED PRIOR TO
PLACEMENT OF THE BONDING AGENT AND THE NEW MORTAR. THE REINFORCING SHALL BE
CLEANED WITH A WIRE BRUSH UNTIL NO OLD CONCRETE REMAINS AND THE STEEL IS FREE OF
ANY DUST, LOOSE CONCRETE, OIL, RUST, CORROSION, ETC.
6. ALL EXPOSED REBAR SHALL BE SPRAYED WITH A CORROSION INHIBITOR.
7. THE EXISTING SURFACE OF THE CONCRETE REMAINING, AGAINST WHICH NEW CONCRETE WILL
BE PLACED, SHALL BE ROUGHENED TO A MINIMUM OF 14" AMPLITUDE.A BONDING AGENT
SHALL BE APPLIED TO THE SURFACE OF THE EXISTING CONCRETE PRIOR TO PLACEMENT OF
THE NEW CONCRETE.
8. CONCRETE REMOVAL MUST BE CARRIED OUT ALONG CORRODED EXPOSED BARS UNTIL A
CONTINUOUS LENGTH OF AT LEAST 3" OF BAR FREE FROM CORROSION IS EXPOSED.
9. CONCRETE REPAIR MORTAR SHALL BE MASTEREMACO N400 RS, MASTEREMACO S466 CI, OR
APPROVED EQUAL.
10. THE USE OF CHLORIDE ACCELERATORS IN ANY CONCRETE MIX DESIGN IS NOT PERMITTED.
11. ALL REINFORCING BARS TO BE ASTM A615 GRADE 60, DEFORMED AND ALL WELDED WIRE
FABRIC TO BE ASTM A185. ALL REINFORCING TO BE PLACED IN ACCORDANCE WITH THE
LATEST EDITION OF ACI 318 AND CRSI SPECIFICATIONS.
12. THE WELDING OF REINFORCING STEEL BARS IS NOT PERMITTED, INCLUDING BUT NOT LIMITED
TO TACKWELDS, BUTT WELDS, GROOVE WELDS, ETC.
13. ALL NEW CONCRETE SHALL BE CURED IMMEDIATELY AFTER FINISHING OF REMOVING
FORMWORK. CURING SHALL BE EITHER A MOIST CURE METHOD OR THE USE OF A CURING
COMPOUND.
14. ALL FILL REQUIRED SHALL BE COMPACTED AND TESTED TO A MINIMUM OF 95% OF ITS
MAXIMUM DENSITY AS DETERMINED BY ASTM D1557
GENERAL NOTES
1. ALL APPLICABLE LOCAL, STATE AND FEDERAL RULES, REGULATIONS, ORDINANCES AND CODES
SHALL APPLY THROUGHOUT THE PROJECT.
2. VERIFY ALL APPLICABLE EXISTING DIMENSIONS, ELEVATIONS, AND CONDITIONS PRIOR TO
FABRICATION AND CONSTRUCTION
3. IF THE EXISTING CONDITIONS DIFFER FROM WHAT IS SHOWN ON THE DESIGN DRAWINGS, NOTIFY
SOILS AND STRUCTURES IMMEDIATELY SO THAT THE DESIGN MAY BE PROPERLY MODIFIED.
4. ALL SPECIAL INSPECTIONS AND STRUCTURAL TESTS SHALL BE PERFORMED IN ACCORDANCE
WITH CHAPTER 17 OF THE 2015 MICHIGAN BUILDING CODE.
5. DO NOT SCALE DRAWINGS.
6. ALL INDICATED STRUCTURAL ELEVATIONS ARE BASED ON THE EXISTING BASEMENT FLOOR
FINISHED TOP SURFACE ELEVATION OF 100'-0".
7. REPRODUCTIONS OF CONTRACT STRUCTURAL DRAWINGS SHALL NOT BE USED FOR SHOP
DRAWINGS. ELECTRONIC FILES ARE NOT AVAILABLE FOR USE BY SUBCONTRACTORS
8. REPAIR CONDITIONS NOT SPECIFICALLY DETAILED OR INDICATED SHALL BE REPAIRED SIMILAR TO
DETAILS SHOWN FOR THE RESPECTIVE MATERIAL OR CONDITION.
9. NO OPENINGS SHALL PENETRATE STRUCTURAL ELEMENTS WITHOUT THE ENGINEER OF RECORD'S
APPROVAL.
10. THE CONTRACTOR IS RESPONSIBLE FOR ADEQUATELY SHORING, UNDERPINNING, SHEET PILING, ETC. AGAINST EXISTING STRUCTURES AS REQUIRED SO THEY ARE NOT DAMAGED DURING
CONSTRUCTION. THIS SHALL ALSO INCLUDE ANY CONSTRUCTION LOADS.
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CONCRETE
REINFORCING STEEL
LAP SPLICES
SIZE TOP BARS OTHER BARS
#3 24" 21"
#4 33" 27"
#5 42" 33"
#6 51" 39"
#7 72" 54"
#8 81" 63"
#9 93" 72"
#10 102" 81"
#11 114" 87"
SCALE: 1/2" = 1'-0"S101
1 NORTH WALL ELEVATION
EXIST. BASEMENT FLOOR
SLAB ON GRADE
EXIST. CONC. PILASTER
T.O. WALL
EXIST. F.F.
EXIST. WALL PIPE
PENETRATION, TYP.
EXIST. WINDOW
OPENING, TYP.
100'-0"
SEE DETAIL 4/S301
SEE DETAIL 4/S301 SEE DETAIL 4/S301
SEE DETAIL 6/S301
SCALE: 1/2" = 1'-0"S101
2 SOUTH WALL ELEVATION
BASEMENT FLOOR SLAB
EXIST. CONC. PILASTER
EXIST. WALL PIPE
PENETRATION, TYP.
EXIST. WINDOW
OPENING, TYP.
T.O. WALL
EXIST. F.F.
100'-0"
PATCH 10" Ø
AROUND PIPES,
SEE DETAIL 7/S301
SEE DETAIL 5/S301 SEE DETAIL 4/S301
SEE DETAIL 4/S301
SEE DETAIL 4/S301
SEE DETAIL
4/S301
SCALE: 1/2" = 1'-0"S101
3 WEST WALL ELEVATION
BASEMENT FLOOR SLAB
EXIST. WINDOW
OPENING, TYP.
T.O. WALL
EXIST. F.F.
100'-0"
SEE DETAIL 7/S301
SEE DETAIL 4/S301,
WRAPS TO N. WALL
SEE DETAIL 4/S301
SEE DETAIL 5/S301
SCALE: 1/2" = 1'-0"S101
4 EAST WALL ELEVATION
BASEMENT FLOOR SLAB
EXIST. STAIRS
EXIST. WINDOW
OPENING, TYP.
EXIST. WALL PIPE
PENETRATION, TYP.
T.O. WALL
EXIST. F.F.
100'-0"
SEE DETAIL 4/S301, TYP.
SEE DETAIL 4/S301
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EXIST. 6" CONC. SLAB
NEW 24" CONC. SLAB
W/ NO CONTROL JOINTS
CONT. WESTEC 581
RETROFIT WATERSTOP
OR APPROVED EQUAL
EXIST. FDN. WALL
SCALE: 3/4" = 1'-0"S101
1 FLOOR SLAB REPAIR #1
'-0
THIN LAYER OF SAND
FOR BOND BREAKER
100'-0"
EXIST. F.F.
102'-0"
NEW F.F.
EXIST. 6" CONC. SLAB
NEW 16" CONC. SLAB W/
#5 BARS @ 12" O.C. EA. WAY
T&B, NO CONTROL JOINTS
CONT. WESTEC 581 RETROFIT
WATERSTOP OR APPROVED EQUAL
EXIST. FDN. WALL
SCALE: 3/4" = 1'-0"S101
2 FLOOR SLAB REPAIR #2
'-4
THIN LAYER OF SAND
FOR BOND BREAKER
100'-0"
EXIST. F.F.
101'-4"
NEW F.F.
6"
#4 X 12" LONG DOWELS @ 12" O.C.
CENTERED IN NEW SLAB, EMBED.
6" INTO EXIST. FDN. WALL USING
HILTI HIT-HY 200 EPOXY
C L R
C
L R
10 MIL VAPOR
BARRIERCOMPACT EXIST.
SUBGRADE
NEW 36" CONCRETE SLAB
W/ NO CONTROL JOINTS.
VERIFY NO INTERFERANCE
W/ EXIST. FOOTING
SCALE: 3/4" = 1'-0"S101
3 FLOOR SLAB REPAIR #3
'-0
CONT. WESTEC 581
RETROFIT WATERSTOP
OR APPROVED EQUAL
EXIST. FDN. WALL
100'-0"
NEW F.F.
REMOVE EXISTING CONCRETE
SUCH THAT THE EXISTING
STEEL REBAR IS NOT DAMAGED
SOUND CONCRETE
EXISTING CONCRETE SURFACES MUST BE
ROUGHENED TO MIN. 14"AMPLITUDE AND
BONDING AGENT APPLIED
PRIOR TO NEW CONCRETE BEING PLACED
2" TO 11
2" DEPTH
REMOVE LOOSE CONCRETE AND
REPLACE WITH NEW
CONCRETE REPAIR MORTAR
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WALL REPAIR DETAIL #2
S201
EXISTING REINF. BARS
EXISTING CONCRETE SHALL BE
REMOVED TO SOUND CONCRETE.
REMOVE EXISTING CONCRETE
SUCH THAT THE EXISTING
STEEL REBAR IS NOT DAMAGED
SOUND CONCRETE.
SCALE: NTS
S201
2" CLR. TYP.
EXISTING CONCRETE SURFACES MUST BE
ROUGHENED TO MIN. 14"AMPLITUDE AND
BONDING AGENT APPLIED PRIOR TO
NEW CONCRETE BEING PLACED
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ADDITIONAL HORIZONTAL REBAR REQUIRED
IF CORROSION HAS REDUCED HORIZ. BAR
AREA BY 10%, REFER TO DET. 8/S301 SIM.
WALL REPAIR DETAIL #4
EXISTING CONCRETE SHALL BE
REMOVED TO SOUND CONCRETE.
EXISTING REINF. BARS
ADDITIONAL VERTICAL REBAR REQUIRED
IF CORROSION HAS REDUCED VERT. BAR
AREA, REFER TO DET. 9/S301 SIM.
CONCRETE REPAIR MORTAR
SEE CONC. REPAIR NOTES ON
S101 FOR REBAR PREPERATION
NEW VERT. BAR, SIZE &
SPACING TO MATCH EXIST.
SCALE: NTS
ADDITIONAL VERTICAL REBAR DETAIL9
S301
REMOVE CONC. AT LEAST
1" AROUND SPLICE
WIRE BARS TOGETHER FOR FULL
CONTACT OF TOTAL SPLICE LENGTH
ADDITIONAL REBAR REQUIRED IF
EXISTING REBAR IF CORROSION HAS
REDUCED BAR AREA BY 10%
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ORIGINAL
BAR SIZE
ADD'L BAR
ALTERNATE
ADD'L BARS
#3 (1) #3, X=24" --
#4 (1) #4, X=33" (2) #3, X=24"
#5 (1) #5, X=42" (2) #4, X=33"
#6 (1) #6, X=51" (2) #5, X=42"
SCALE: NTS
WALL REPAIR DETAIL #1 & BUGHOLE REPAIR
S201
HAIRLINE CRACK IN
CONC. WALL NOT
GREATER THAN 14" WIDE
CONC. WALL BUG HOLE OR
HOLE FROM OLD ANCHOR
GREATER THAN 12" Ø
CLEAN AND DRY CRACKS AND
HOLES, FILL COMPLETELY W/
A POLYMER MODIFIED
STRUCTURAL REPAIR MORTAR
DRILL HOLE AT END OF
CRACK W/ 38" Ø DRILL
BIT, DRILL AS DEEP AS
CRACK OR 4" MAX. TYP.
REMOVE EXISTING CONCRETE
SUCH THAT THE EXISTING
STEEL REBAR IS NOT DAMAGED
SOUND CONCRETE
SCALE: NTS
S201
EXISTING CONCRETE SURFACES MUST BE
ROUGHENED TO MIN. 14"AMPLITUDE AND
BONDING AGENT APPLIED PRIOR TO
NEW CONCRETE BEING PLACED
2" TO 4" DEPTH
CONCRETE REPAIR MORTAR
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SEE CONC. REPAIR
NOTES ON S101 FOR
REBAR PREPERATION
ADDITIONAL HORIZONTAL REBAR REQUIRED
IF CORROSION HAS REDUCED HORIZ. BAR
AREA BY 10%, REFER TO DET. 8/S301
WALL REPAIR DETAIL #3
ADDITIONAL VERTICAL REBAR REQUIRED
IF CORROSION HAS REDUCED VERT. BAR
AREA, REFER TO DET. 9/S301
NOTE:
IF REPAIR DEPTH EXCEEDS
HALF THE WALL THICKNESS
SOILS & STRUCTURES
SHALL BE NOTIFIED SO OUR
DESIGN MAY BE PROPERLY
MODIFIED
EXISTING CONCRETE SHALL BE
REMOVED TO SOUND CONCRETE.
EXISTING REINF. BARS
2" CLR. TYP.
REMOVE EXISTING CONC. AT
LEAST 1" AROUND SPLICE
WIRE BARS TOGETHER FOR FULL
CONTACT OF TOTAL SPLICE LENGTH
REPLACE EXISTING REBAR IF CORROSION
HAS REDUCED BAR AREA BY 50%
SCALE: NTS
ADDITIONAL HORIZONTAL REBAR DETAIL
S301
REDUCED BAR AREA
10"
MIN.
10"
MIN.
REPAIR NOTES:
· IF CRACK DEPTH EXCEEDS LIMITS IN DETAIL
CALLED OUT ON S201, UTILIZE
APPROPRIATE DEPTH REPAIR DETAIL.
· FILL ALL ABANDONED PIPE PENETRATIONS
PER DETAIL 7/S301.
EXIST. FDN. WALL
SCALE: 1/2" = 1'-0"S101
10 WALL WATERPROOFING
GRADE
±104'-0"
GEOTEXTILE FABRIC
DRAINAGE PANEL
ALTERNATE #1: PERIMETER
FDN. DRAIN MIN. 6" BELOW
TOP OF NEW FLOOR SLAB
PER DET. 12/S301
2" XPS INSULATION
BITUTHENE 3000
WATERPROOF MEMBRANE,
INSTALL PER MANUFACTURER
CLOSURE
LIQUID MEMBRANE
BACKFILL
CRUSHED STONE
EXIST. FOOTING
S301
NEW CONC. SLAB, SEE
PLAN FOR REPAIR/
REPLACEMENT OPTIONS
NEW F.F.
EXIST. FOOTING
SCALE: 3/4" = 1'-0"S301
12 FOUNDATION DRAIN
GEOTEXTILE FILTER
FABRIC
1" Ø STONE
ALTERNATE #1
EXIST. FDN. WALL
6" Ø ADS DRAIN TO SUMP
W/ SOCK MIN. 6" BELOW
TOP OF NEW FLOOR SLAB
NEW CONC. SLAB, SEE
PLAN FOR REPAIR/
REPLACEMENT OPTIONS
2'-0"
'-0
M
IN
. NEW F.F.
GROUT CANT
W/ 2" FACE
DRAINAGE PANEL
1" XPS INSULATION
BITUTHENE 3000
WATERPROOF MEMBRANE,
INSTALL PER MANUFACTURER
EXIST. FOOTING
SCALE: 1" = 1'-0"S301
11 FOOTING WATERPROOFING
EXIST. FDN. WALL
LIQUID MEMBRANE
LIQUID MEMBRANE
(COVER LAP EDGE)
BITUTHENE 3000
WATERPROOF MEMBRANE,
INSTALL PER MANUFACTURER
SARNABAR SS W/ 14"
ZAMAC W/ SS PIN.
COVER SARNABAR IN
LIQUID MEMBRANE
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