HomeMy WebLinkAboutMANUAL - CONCRETE RESTORATIONI - -
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VILLA DEL SOL CONDOMINIUM
BLDG 4
CONCRETE RESTORATION
PROJECT MANUAL
APRIL 2017
THE�E PLANS AND ALL PROPOSCO WopX
ARE SUBJECT TO ANY COFACOTIONS
'REQUIRED By FIELD INSPECTORS THPT
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COMPLY WITH ALI A10PUCABLE CODES.
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SCANNED
BY
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ST. LUCIE COUNTY
BUILDING DIVISION
REVIEWED
FOR COMPLIA14QV
REVIEWED BY to
MUST BE KEPT OjdJOB OR
NO INSPECTION WILL BE MADE
BUNKER ENGINEERING & CONSTRUCTION SERVICES, INC.
120 North Federal Highway, Suite 305, Lake Worth, FL 33460
I
I
VILLA DEL SOL CONDOMINIUM
13DLG 4
CONCRETE RESTORATION
PROJECT MANUAL
APRIL 2017
TABLE OF CONTENTS
SECTION
SECTION TITLE
0100
Scope of Work, Location Map,
Design Criteria
0200
Concrete Repair Specifications
0300
ICRI Drawings
0400
Approved Products
0500
Miscellaneous
0600
Repair Locations
TOTALPAGES
1
8
5
2
4
1
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BUNKER ENGINEERING & CONSTRUCTION SERVICES, INC.
120 North Federal Highway, Suite 305, Lake Worth, FL 33460
NMI
SECTION 0100
VILLA DEL SOL CONDOMINIUM
BLDG 4
CONCRETE RESTORATION
SCOPE OF WORK, LOCATION MAP, AND DESIGN CRITERIA
Scope of Work:
1) Repair cracked and spalled concrete in the quantities as directed by the engineer and in
accordance with the contract work items.
Design Criteria:
1) Level of Alteration: I (per FBC 2014, Existing Building, Sec 403. 1)
2) Wind Load Design Criteria: (per See. 1609 and 1620 -FBC 2014):
• Wind Velocity: 170 MPH
• Exposure Category: 'C!
• Risk Category: 11
• Mean Roof Height: 40 FT
• Int. Pressure Coef. +/-008
THESE PLANS AND ALL PROPOSED WOPX
ARE SUBJEC T TO ANY CORRECTIONS
3) Occupancy: Residential R-2
REQUIRED BY FIELD INSPECTORS THAT
AY BE NECESSARY IN ORDeR To
.
COMPLY WITH ALL APPUCABLE COMS.
Location Mal): Villa del Sol Condomi nium
11000 South Ocean Dr.
Jensen Beach, FL 34957
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END OF SECTION
BUNKER ENGINEERING & CONSTRUCTION SERVICES, INC.
120 North Federal Highway, Suite 305, Lake Worth, FL 33460
SECTION 0200
CONCRETE REPAIR SPECIFICATIONS
SCOPE OF WORK:
Repair cracked and spalled concrete at locations and in the quantities as directed by the
engineer and in accordance with the contract work items.
Repair of corrosion deteriorated concrete shall be in accordance with the International Concrete
Repair Institute (ICRI) Concrete repair Manual (2nd edition).
All concrete repairs include:
a. Repair of damaged/deteriorated concrete
b. Repair overhead, beam and column spalling at IDENTIFIED areas.
c. Application of a cementious waterproofing membrane onto the repair areas.
d. Application of Stucco to repair areas (Required to match existing building finish).
e. Installation of weather walls.
f. Removal and reinstallation of the existing Accordian Hurricane Shutters (If Required)
g. Removal of any foreign objects attached to the concrete surface
A. Removal of deteriorated concrete (minimum requirements, all locations):
1 . Before any excavating, survey work area for any preexisting conditions, measure and
record opening dimensions for later use during replacement of any accessories, as
required. Provide copy to the engineer.
2. All shoring shall be inspected and approved by the shoring engineer prior to proceeding
with any construction that imposes load into temporary shoring.
3. Any questions regarding adequacy of shoring should be brought to the attention of the
engineer.
B. Repair of Deteriorated Concrete in Columns:
1 . Place shore post under the slab per engineer's direction.
2. Unless repair work for specific columns is other wise approved by the engineer,
excavations in concrete columns shall proceed in increments not to exceed 20% of the total
horizontal cross sectional area of the column. The limit for vertical excavation is 4-feet for
each individual excavation. Each subsequent excavation between placements will be
treated as a cold joint that requires a fractured surface and approved bonding agent.
3. Remove concrete in all directions along steel bars to expose at least 2-inches of clean
reinforcing steel without indications of rust, or according to engineer's direction.
4. Remove concrete below and all around rusted steel to provide a minimum clearance of 1 -
1/2" inches between the steel and the internal fractured concrete surfaces. Removal of
concrete around non -rusted steel may be less than 180 deg around its circumference.
5. Partial excavations can terminate on rusted areas of steel bars, but not adjacent to existing
concrete that is cracked or unsound.
6. Excavations in concrete columns that expose existing vertical lap splices shall be limited to
only one lap splice open at one time.
7. Install short lengths of clean #4 bars, approximately I" to 5" in length as required,
horizontally between exposed vertical bars and excavate concrete surfaces in both
BUNKER ENGINEERING & CONSTRUCTION SERVICES, INC.
120 North Federal Highway, Suite 305, Lake Worth, FL 33460
directions. These bars should serve as chairs contained within the interior cage bars to
prevent inward lateral movement of the vertical bars. Such chairs shall be install at the
level of every other cage, or 2-feet O.C, maximum spacing.
8. Use approved boncling/anti-corrosion agent applied to the existing adjacent concrete.
9. The repair concrete material to be placed must be low shrink concrete specified for column
placements. Design mix repair concrete is not approved for column placements.
10. Wait at least three(3) days or until 80% of design strength is reached after concrete has
been placed before proceeding with subsequent excavations.
11. Where steel bars have lost more than half the specified allowable original cross section,
add new lap splice per the specifications.
12. Column repairs may require additional concrete to cover mislocated steel bars. Where
additional concrete is required, remove all stucco and mechanically work surfaces to
provide a new fractured surface. Excavation 1/4" behind deteriorated steel cages is
required, but continuous excavations in the vertical direction should not be done.
13. Column repairs should be scheduled in-between and around other repairs on an ongoing
basis.
C. Reinforcing Steel:
1 . Where corrosion is Visible, unless special conditions restrict its use, sandblast all around
the steel bars' circumference to remove all contaminants and scaling rust.
2. Any questionable placement of the existing steel, as placed in the original construction,
should be brought to the attention of the engineer.
3. LAP SPLICE Where reinforcing steel has lost 20% or more of its original cross section,
add lap splice of new steel of same diameter per the following guidelines:
a. Additional undamaged concrete may need to be excavated to install the lap splice.
b. The lap splice should be placed at least I" away from the old steel or placed directly
against it and tie -wired at least every 4" along the overlap length.
c. If needed, the ends of damaged steel can be cut out to provide space for the splice.
d. Overlap lengths should be measured from where the old steel has at least 80% of
its original sectional area. Minimum lap splice overlap lengths are as follows:
BARNOMINAL/SIZE
LENGTH OF OVERLAP
(inches)
#3
15
94
20
#5
25
#6
30
#7
35
a. Exceptions to the table above, with the engineer's knowledge and approval, areas
follows:
L Where the loading is in primary shear, the lap splice lengths may be
reduced by half the lengths specified above.
ii. Where the loading is always in tension, it will be acceptable to satisfy lap
splice requirements by bending lap steel bars into 135 deg. hooks and
connecting together or into adjacent structures.
BUNKER ENGINEERING & CONSTRUCTION SERVICES, INC.
120 North Federal Highway, Suite 305, Lake Worth, FL 33460
1411181 MKII
iii. It will be acceptable to dowel new lap steel into adjacent concrete. The
embedded end must be set in an approved high modulus epoxy gel with no
air pockets allowed. Drilled hole should be filled from the bottom (using
plastic tube) with epoxy prior to inserting the steel bar.
iv. Installing mechanical connectors at the ends of the splice bar to the damage
bar, in lieu of overlapping.
v. Welding the splice bars together. The weld overlap on each side must be at
least 2" for welding on both sides of the bars. The weld overlap on each
side of the damaged bars must be at least 4" for welding on just one side of
the bars. The bars must be properly cleaned per AWS specifications. The
weld bead must be full penetration per AWS specifications with no
undercutting. The minimum weld thickness must be 80% of half the bar
diameter. All welds must be inspected by the engineer before coating with
bonding agents.
4. New splice sections should be bent to match the shape of the existing steel and to provide
required concrete cover.
5. At the slab edge, bend bar hooks and/or cut off ends, as required, for bars that come within
1-1/2" of the surface of the slab. If possible, both existing and added reinforcing steel in
slabs should be positioned in order to achieve a minimum %" concrete cover. In severe
cases, with the engineers approval, steel can be cut out and replaced.
D. Concrete Repair -Mortar Aggregate:
1. Where the depth of1he repair exceeds 1", the modified cement mortar mix must be
extended by use of Y4" or 3/8" aggregate per manufacturers instructions. Aggregate shall
be well graded, rinsed clean, and water saturated or have low water absorption.
E. Placement of New Concrete:
1 . Construct forms as required for placement of the new concrete to match existing surfaces.
Always provide for water runoff according to the original design. Verify and maintain
previously recorded opening dimensions as required for any accessories to be installed
later.
2. Prior to placement of new concrete, the excavated areas are to be cleaned, flushed and
saturated with water. Remove any standing water that is not absorbed.
3. All exposed reinforcing steel, metallic conduits, and/or pipes are to be re -coated with the
application of an approved bonding agent no more than 24 hours before concrete
placement.
4. Prime coat the excavated concrete areas coated with the application of an approved
bonding agent no more than 24 hours before concrete placement. Fill all holes and voids.
All manufacturers' instructions must be followed.
5. All placements must be continuous, layering is not allowed. Where cold joints are
necessary, the edge of the previous placement must be treated as existing concrete, i.e.
fractured surface, bonding agent, etc.
6. Place concrete and finished surface to match existing.
7. If the ambient temperatures during the curing process exceed 90 OF provisions must be
made for cooling of the materials and placement according to manufacturers instructions
and standard ACI practices.
BUNKER ENGINEERING & CONSTRUCTION SERVICES, INC.
120 North Federal Highway, Suite 305, Lake Worth, FL 33460
F. Concrete Curing:
1 . The exposed surfaces of the placement should be covered and maintained damp by
frequent spraying with water for at least 5 days or as required according to material
manufacturer's instructions. An acceptable alternative would be the application of an
approved watertight coating applied after the initial concrete setup.
2. Forms and shores can be removed, and accessories installed, after 5 days or when
material specifications or testing show that the concrete has reached at least 80% of its
design strength. Hold times less than 5 days require engineers approval.
G. Surface Finishing Included With Concrete Repairs:
1 . Where new concrete has been placed, grind away excess as required to match surface
and texture of surrounding areas.
2. In areas where new concrete has been placed and areas adjacent to such areas, install
skim coat mortar or stucco, as required, to fill voids and match surface and texture of
surrounding areas.
3. Where occasional unnecessary or abandoned fasteners show in areas nearby to where
new concrete has been placed, mechanically remove all such fasteners. Remove all loose
material and fill holes with skim coat mortar or stucco, as required, match surface and
texture of surrounding areas.
4. Where new concrete develops shrinkage cracks, Gall for engineering inspection to
determine method and time for crack repair. Epoxy injection or gravity feed epoxy will be
required to fill cracks as directed by engineer.
5. Unless otherwise stated in the contract, all vertical and overhead repaired areas must be
touch up painted. The owners will be responsible to provide the paint or local source of for
the paint. Color matching, texture, and all paint material costs will be the owners
responsibility. Upon the owners request, contractor will provide a first coat of concrete
primer paint to be followed up by touch up paint. Upon the owners request, contractor will
delay painting in partial areas to at least 3 weeks following new concrete placements.
H. Stucco Repair:
All stucco placement shall be in accordance with all code requirements, regulations, and
requirements by jurisdiction having authority.
At stucco repair areas, install trowel grade or skim coat mortar or stucco to fill voids and match
surfaces and texture of surrounding areas.
Preparation
1 . Stucco should not be installed until all surfaces are clear from irregularities or other
imperfections that may compromise the finished look of the stucco.
2. MASONRY: Verify joints are cut flush and surface is ready to receive stucco. Verify no
bituminous or water repellent coatings exist on masonry surface.
3. CONCRETE: Verify surfaces are flat, honeycombs are filled flush, and the surface is ready
to receive stucco. Verify no bituminous, water repellent, or form release agents exist on
concrete surfaces that are detrimental to stucco.
4. Roughen and clean masonry and concrete surfaces to the degree required to achieve
mechanical bond. Apply bonding agent where needed for adhesion. Surfaces to receive
stucco shall be damp without visible surface water.
BUNKER ENGINEERING & CONSTRUCTION SERVICES, INC.
120 North Federal Highway, Suite 305, Lake Worth, FL 33460
3
21111,
Application
1. Stucco thickness shall match existing.
2. Mechanical mixers must be used. Hand mixing is not allowed. Keep mixer and all tools
clean. Do not let foreign parricles or objects enter the mix.
3. "One -coat" stucco, which is a combined scratch & brown coat, and a finish coat, is allowed.
If a proprietary "one-Poat" stucco is used, follow all manufacturers recommendations. Pay
particular attention to lath detail, and all curing recommendations. Any additives or
modifiers must be approved by engineer.
4. Ensure that finished stucco work is true to line, plane, level and plumb.
5. Follow all manufacturers recommendations regarding mixing times, and time between
coats, curing, etc, if different than specified Discuss manufacturer recommendations With
engineer for approval, if different than listed herein.
6. If sanding or powdering occurs, remove stucco and re -work with stucco mixed in proper
proportions and ensure proper curing.
7. After full cure, approximately 28 days, apply primer by brush, roller, or spray at a rate
recommended by stucco manufacturer or approved by engineer. Apply from corner to
corner, starting at bottom and working to top.
8. All stucco applied at repair areas, or areas with surrounding stucco shall be touch-up
painted to match color, surface, and texture, as best as possible to surrounding areas.
Touch-up paint shall be provided by owner in this case, unless otherwise indicated in the
project documents.
1. Epoxy injection of cracks not incidental to Concrete Placement:
I . Where cracks are not caused by steel corrosion, inject epoxy to seal the cracks. Test the
visible areas on both sides and all around the crack. If sound and there is no evidence of
corrosion of spalling, inject the crack with an approved epoxy material. In all cases, the
crack should be brought to the attention of the engineer who will[ advise on the method and
materials to use. 1
2. Clean the area of deteriorated concrete and any contaminants.
3. Install the injection ports at appropriate intervals to accomplish full penetration of the
injection adhesive. The spacing between injection ports shall be determined by the size of
the crack and by the depth of the concrete substrate. The spacing shall not exceed 8-
inches. Install the injection ports by using surface mounted injection ports as follows:
a. Center the injection port over the crack and secure in place by using epoxy gel.
b. Completely seal the exposed crack located between the injection ports and
boundaries as required, by applying epoxy gel into the crack. Apply the epoxy gel
at an approximate thickness of 1/8".
c. If the crack extends through the member, and if accessible, install telltale injection
ports on opposite side and seal all exposed areas of the crack. The spacing of the
telltale ports should be 12" to 24".
J. Shrinkage Cracks in Old Concrete:
I . Remove any debris and contaminants from the crack prior to application of gravity fed
epoxy. This is best accomplished by blowing out the crack with compressed air followed by
vacuuming the crack.
2. Once the concrete crack has been properly cleaned, follow the shrinkage crack repair
procedure below.
BUNKER ENGINEERING & CONSTRUCTION SERVICES, INC.
120 North Federal Highway, Suite 305, Lake Worth, FL 33460
K. Shrinkage Cracks in New Concrete:
1 . Shrinkage cracks are anticipated for new concrete and stucco placements as part of
restoration work. Though these cracks do not cause any structural concerns, they should
be sealed all through the concrete thickness to protect the embedded steel bars.
2. Sealing of shrinkage cracks in newly placed concrete should only be done after a minimum
of 30 days has passed since the concrete placement. Shrinkage cracks can occur and
grow at any time during the curing process.
3. Provide a containment reservoir for the gravity fed epoxy.
4. Apply gravity fed epoxy to the crack in the concrete. Allow epoxy to penetrate into the
crack and completely fill the crack space w/o any voids remaining.
5. Just prior to curing of the epoxy, scrape off excess epoxy using a suitable trowel type tool.
6. The quantity and extent of shrinkage cracks is partially dependent on the quantity of the
damp curing and protection from the wind and sunlight. The cost of the repair of shrinkage
cracks for new placement should be built into and included with the cost of the new
concrete or stucco. Repair of shrinkage cracks for new concrete and stucco should be at
no extra cost to the owners.
L. Surface repairs Not Incidental to Concrete Placement:
1. STUCCO: If provided for in the contract, where cracked or delaminated stucco is to be
repaired in the areas not needing concrete repairs, mechanically remove loose and
delaminated stucco. Prepare/clean exposed surfaces by water blasting as needed to
receive new stucco. Install new stucco to match surface and texture of surrounding areas.
2. FASTENERS: If provided for in the contract, where unnecessary or abandoned fasteners
show in areas not receiving concrete repairs, mechanically remove all such unnecessary
fasteners Clean and fill all remaining holes with skim coat mortar or stucco, as required, to
match surface texture of surrounding areas
M. Existing Deficient Concrete Cover:
1 . Any questionable concrete cover for existing concrete areas, from the original construction,
should be brought to the attention of the engineer.
2. During concrete restoration work, all efforts should be made to reposition bars deeper into
the concrete repair area to achieve required concrete cover. To help achieve proper
depths, rebar can be bent or relocated. Where possible, additional concrete should be
excavated deeper into repair areas to allow for relocating rebar deeper.
3. However, concrete repair areas should not be expanded into adjacent existing non -
damaged areas solely because of lack of concrete cover. Additional concrete should be
excavated along rebar solely because of an existing lack of concrete cover.
4. Where concrete cover is less than that required, placement of approved acrylic polymer
modified structural repair mortar around the steel in question is required. No field added
aggregate should be added to the approved mortar mix. The approved acrylic polymer
modified mortar will provide the equivalent corrosion protection required by code up to 3/8"
cover.
5. Where concrete cover is <3/8" and rebar cannot be moved deeper, partial coating of the
rebar with approved epoxy coating. Coat only the top half or that portion of the bar with
3/8" cover.
BUNKER ENGINEERING & CONSTRUCTION SERVICES, INC.
120 North Federal Highway, Suite 305, Lake Worth, FL 33460
oil C
MASONRY CRACK REPAIR
A. For filled cell structural columns or ties beams containing rebar:
1 . Before repairing, ensure that all surfaces to be cleaned, rinsed and dried, and free from dirt,
grease, oil, loose or peeling paint, chalk, salt, or other surface contaminants. Remove
loose and deteriorated material by chasing the crack with a utility knife or similar instrument.
2. Crack 1/32" or less in width, after proper preparation, shall be filled with an approved liquid
epoxy resin sealer in accordance with manufacturers recommendations.
3. Cracks of 1/16" to 114" in width shall be cut or ground out and cleaned. Use a flexible too[ to
inject the epoxy gel and ensure that the gel completely fills each crack. Repeatedly inject
material to ensure that the epoxy gel has filled all voids.
4. Cracks 1/4" or greater in �Ahdth should be excavated in accordance with the above
referenced concrete repair specifications and repaired using trowel grade mortar.
B. For non-structural masonry:
1 . Make sure surfaces are sound, clean, dry, and free of all bond -inhibiting materials including
mildew dust dirt laitance and standing water. Remove loose and deteriorated material by
chasing the crack with a utility knife or similar instrument.
2. Test the visible areas on both sides and all around the crack. If sound and there is no
evidence of looseness, fill the crack with an approved filler material. Apply flexible crack
filler material per the manufacturer's instructions.
MISCELLANEOUS
A. Engineering inspections:
During on -site engineering inspections, the engineer shall review any work underway, regarding
work locations, methods, shoring, forms, safety, property protection, concrete placements, proper
curing of newly placed concrete, owner concerns, or any other items as appropriate. The
contractor is responsible for providing openings in access barriers or weather barrier walls for
engineering inspections to work areas for purposes of engineering inspections. The contractor is
not responsible for providing use of scaffolding for engineer inspections.
It is expected that different phases of work will be ongoing in multiple locations. Therefore,
requests for engineering inspections will be combined so that different phases of work will be
inspected in the various work locations during each inspection. Each work location requires
engineering inspections and approvals. The contractor has the responsibility to call for engineering
inspections for the following:
WORK LOCATIONS AND DIRECTION: The engineer shall inspect repair areas and direct work,
as required, regarding the location and estimated extent of all repairs. Sliding glass doors, shutter,
railings, or other accessories will not be removed without engineer's approval.
EXCAVATION LIMITS: The engineer shall inspect and approve, as required, all limits of concrete
removal and all steel reinforcement repairs. The engineer shall verify contractor measurements
and approve or disapprove, as required all contract billable quantities for all repairs.
APPROVAL TO PLACE CONCRETE: The engineer shall inspect all areas prior to concrete
placement and give approval, as required, for all concrete placements. The engineer shall inspect
BUNKER ENGINEERING & CONSTRUCTION SERVICES, INC.
120 North Federal Highway, Suite 305, Lake Worth, FL 33460
� ' - 1,
all preparation work, including forms, shoring, safety, steel bar repairs, and any adjustments to
excavation limits.
PLACEMENT OF CONCRETE: All design mix truck placements of concrete require -on -site
engineering and shall be inspected during the placements. The engineer may also require ---
inspections of bag goods concrete placement.
FINAL: The engineer shall inspect and approve, as required, the completion of all repairs for each
phase of work. The Engineer Mi I issue written punch list reports only for remaining items where
the contractor is unable to complete work, correct defective work, repair damages or clean-up as
required by the contract.
END OF SECTION
M4'� ; -�-i �"z g I ag", gg; 11'
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BUNKER ENGINEERING & CONSTRUCTION SERVICES, INC.
120 North Federal Highway, Suite 305, Lake Worth, FIL 33460
BUNKER ENGINEERING & CONSTRUCTION SERVICES, INC.
UNKEAR 120 N FEDERAL HWY, SUITE 306, LAKE WORTH, FL 33460 PH 9561-585-5696 — FAX #561-585-5697
SECTION 0300
CLEANING OF REINFORCING STEEL
ALL HEAVY CORROSION AND SCALE SI
REMOVED FROM THE BAR AS NECESS,
PROMOTE MAXIMUM BOND OF REPLAC
MATERIAL. OIL FREE ABRASIVE BLAST
PREFERRED METHOD. A TIGHTLY BON
RUST BUILD-UP ON THE SURFACE IS U
DETRIMENTAL TO BOND, UNLESS A PR
COATING IS BEING APPLIED TO THE Bd
IN WHICH CASE THE COATING MANUFP
RECOMMENDATIONS FOR SURFACE PF
SHOULD BE FOLLWED.
CONCRETE SUBSTRATE
#�EEAI _�T In
CLEANING BACKSIDE OF CORRODED
REPAIR OF REINFORCING STEEL DUE TO LOSS OF SECTION
IF REINFORCING STEEL HAS LOST SIGNIFICANT CROSS
SECTION, A STRUCTURAL ENGINEER SHOULD BE
CONSULTED. IF REPAIRS ARE REQUIRED TO THE
REINFORCING STEEL, ONE OF THE FOLLOWING REPAIR
METHODS SHOULD BE USED:
1) COMPLETE BAR REPLACEMENT, OR
2) ADDITION OF SUPPLEMENTAL BAR OVER AFFECTED
SECTION.
REQUIRED LAP= 18" MIN.
REPAIR DETAIL: LOSS OF SECTION
ICRI GUIDELINES
, amod , LN
_141i m0mm cooliffiffif
NEW BARS MAY BE MECHANICALLY SPLICED TO OLD BARS
OR PLACED PARALLEL TO AND APPROXIMATELY % IN.
(19mm) FROM EXISTING BARS. LAP LENGTHS SHALL BE
DETERMINED IN ACCORDANCE WITH AC1318; ALSO REFER
TO CRSI AND AASHTO MANUAL..
AFFECTED LENGTH
LOSS OF SECTION
SUPPLEMENTAL BAR
REQUIRED LAP= I WMIN.
SHEET NO.
CLEANING & REPAIR OF
REINFORCING STEEL 1 1 OF, 5
BUNKER ENGINEERING & CONSTRUCTION SERVICES, INC.
BUNKER1 120 N FEDERAL HWY, SUITE 305, LAKE WORTH, FL 33460 PH 9561-585-5696 - FAX #561-585-5697
EDGE AND SURFACE CONDITIONING OF CONCRETE
THESE DETAILS ARE APPLICABLE TO HORIZONTAL,
VERTICAL, AND OVERHEAD LOCATIONS. THEYARE
ALSO APPLICABLE TO REMOVAL BY
HYDRO -DEMOLITION, HYDROMILLING, AND
ELECTRIC, PNEUMATIC OR HYDRAULIC IMPACT
BREAKERS.
DO NOT USE THESE DETAILS FOR SHOTCRETE
APPLICATIONS - FOR SHOTCRETE REPAIRS REFER
TO ACI 506 EDGE PREPARATION GUIDELINES.
1 . REMOVE DELAMINATED CONCRETE, UNDERCUT
REINFORCING STEEL (REFER TO EXPOSING AND
UNDERCUTTING OF REINFORCING STEEL),
REMOVE ADDITIONAL CONCRETE AS REQUIRED
TO PROVIDE MINIMUM REQUIRED THICKNESS OF
REPAIR MATERIAL.
2. AT EDGE LOCATIONS, PROVIDE RIGHT ANGLE
CUTS TO THE CONCRETE SURFACE WITH
EITHER OF THE FOLLOWING METHODS'
SAWCUTY," (13 mm) OR LESS AS REQUIRED
TO AVOID CUTTING REINFORCING STEEL.
USE POWER EQUIPMENT SUCH AS
HYDRO-DEMOLITiON OR IMPACT BREAKERS.
AVOID FEATHER EDGES.
3. REPAIR CONFIGURATIONS SHOULD BE KEPT AS
SIMPLE AS POSSIBLE, PREFERABLY WITH
SQUARED CORNERS.
4. AFTER REMOVALS AND EDGE CONDITIONING
ARE COMPLETE, REMOVE BOND INHIBITING
MATERIALS (DIRT, CONCRETE SLURRY,
LOOSELY BONDED AGGREGATES) BYABRASIVE
BLASTING OR HIGH PRESSURE WATERBLASTING
WITH OR WITHOUT ABRASIVE. CHECK THE
CONCRETE SURFACES AFTER CLEANING TO
INSURE THAT SURFACE IS FREE FROM
ADDITIONAL LOOSE AGGREGATE, OR THAT
ADDITIONAL DELAMINATIONS ARE NOT
PRESENT.
5. IF HYDRO -DEMOLITION IS USED, CEMENT AND
PARTICULATE SLURRY MUST BE REMOVED
FROM THE PREPARED SURFACES 13EFORE
SLURRY HARDENS.
ICRI GUIDELINES
Amr W
1- lill, I
REPAIR DETAIL
BOUNDARY OF LOOSE & RECOMMENDED LAYOUT
DELAMINATED CONCRETE
K-,'�REPAIR DETAIL
SHEET NO.
EDGE AND SURFAC�
CONDITIONING OF CONCRETE 2 OF, 5
BUNKER ENGINEERING & CONSTRUCTION SERVICES, INC.
UNKEAR 120 N FEDERAL HWY, SUITE 305, LAKE WORTH, Fl- 33460 PH #561-585-5696 - FAX #561-585-5697
BEAM OR RIB
SECTION
ELEVATION
BEAM OR R113 REPAIR DETAIL
�SCALE �1/2- = T - 0"
FILE COPY
ELEVATION COLUMN
CORNER
(-,'�_COLUMN REPAIR DETAIL
k���LE-. �112= 11 - Olp
4.
CONCRETE SLAB REPAIR DETAIL
CAUTION
BEFORE STARTING REMOVALS, REVIEW EFFECT OF
REMOVALS ON STRUCTURAL INTEGRITY. PROVIDE
SHORING OF MEMBERS AS NECESSARY.
PARTICULAR CARE SHALL BE EXERCISED AT SLAB
BEAM CONNECTIONS TO COLUMN.
SLAB OR WALL
PARTIAL DEPTH
SLAB OR WALL
FULL DEPTH
SHEET NO.
ICRI GUIDELINES REMOVAL GEOMETRY 1 3 OF 5
BUNKER ENGINEERING & CONSTRUCTION SERVICES, INC.
SUNK1,M1 120 N FEDERAL HWY. SUITE 305, LAKE WORTH, FL33460 PH #561-685-5696 — FAX #561-585-5697
'V" NOTCH CRACK
BALCONY BALCONY
INTERIOR EDGE
4 4,
4
1 4
SEAL CRACK AT BALCONY EDGE
r4-\,BALCONY TOP VIEW
lw.E m mm
GRAVITY FEED CRACK FILL COPY
W/ SIKA 35 EPDXY
SEALCRACKAT
BALCONY EDGE
MIN. Y4"'V" NOTCH
ATCRACK 4
4
44 4
4 4 4 4
SEAL CRACK AT BOTTOM
BALCONY SECTION
SCALE: NTS
CRACKIREPAIR
1) 'V" NOTCH CRACK
2) CLEAN CRACK REPAIR AREA
3) GRAVITY FEED CRACK REPAIR V\nTH SIKA 35
4) PATCH OVERLAYMENTAREA WITH TUFF DECK (IF REQUIRED
5) PAINT REPAIR AREA TO MATCH EXISTING COATING.
SHEET NO.
ICRI GUIDELINES CRACK REPAIR 4 OF 5
BUNKER ENGINEERING & CONSTRUCTION SERVICES, INC.
UNKEARI 120 N FEDERAL HWY, SUITE 305, LAKE WORTH, FL 33460 PH #561-585-5696 - FAX #561-585-5697
LIMIT EXCAVATION TO
20% OF COLUMN
CONCRETE CROSS
SECTION
TYP. COLUMN REPAIR
SCALE. NTS
SHORE POST SHORE POST INSTALLATION
INSTALLATION
EXCAVATED
CONCRETE
EXCAVATED
CONCRETE
SHORE POST
INSTALLATION
NON EXC VA EXCAVATED CONCRETE
- A TED
CONCRIETE
I! I rnglo r�pws xwo-A
s-2 . cam Met 114 , Ii
4 vw
I",, �COLUMW SECTIONS
TYPICAL COLUMN REPAIR
ICRI GUIDELINES POST SHORE INSTALLATION
GUIDELINES
SHEET NO.
5 OF-5
t
SECTION 0400
APPROVED PRODUCTS
DESCRIPTION / USE
PRODUCTNAME
MANUFACTURER
SEALANTS & COATINGS:
A
Expansion Joint Sea[
Sonolastic NP-2
BASF
B
Elastomeric Caulking
Sonolastic 150
BASF
C
Cemetitious Polymeric
Watertight
Sto
Waterproofing
AQUAFIN 2K/M
AQUAFIN
(Horizontal Surfaces)
FlexCoat wl
Sika
FlexCoat ATC
D
Epoxy for doweling bars
Sikadur 32
Sika
Planibond EBA
Mapei
E
Epoxy for crack repair
Sikadur 35
Sika
(low viscosity)
Planibond CR 50
Mapei
F
Penetrating sealer
Sikagard 701W
Sika
Planiseal WR
Mapei
G
Exterior Coatings
- StoCoat Lotusan
Sto
- Aura Waterborne
Ben Moore
Flat Finish 629
CONCRETE REPAIR PRODUCTS:
A Ready Mix:
- Cement Content: >560 #/yd,
- W/C ratio: < 0.40
- Total water soluble chloride ion (CI)
content < 0.05% by wt. of cement
B Repair mortars:
Full Depth Repair
(Horizontal)
lesign Mix Code Cemex
No.1177769
I R, W", COPY
; Lt
LA40 BASF
Planitop FID Mapei
(Add 3/8" pea gravel aggregate if >4")
(3,200 psi after 24hrs)
Planitop 15 Mapei
(Add 3/8" pea gravel aggregate if >2�
(4,350 psi after 24hrs)
BUNKER ENGINEERING & CONSTRUCTION SERVICES, INC.
120 North Federal Highway, Suite 305, Lake Worth, FL 33460
DESCRIPTION / USE PRODUCTNAME MANUFACTURER
IE
Full Depth Repair (contd)
Partail Depth Repair
OverheadNertical
Bonding/Anti-Corrosion Agent
Portland Cement Plaster
Sto CR310 (Horiz.)
MortarAO
Mapecem Quickpatch
Rapiset V/0
Mortar-V/0
Gel Patch
(Up to 2" per lift)
Planitop XS
(Up to 4"per lift)
Sto CR702CI
Planitop 12
Aro
AQUAFIN
Mapei
Surtreat
AQUAFIN
BASF
Mapei
STO
Mapei
TPS 11
Surtreat
Rebar Primer/Bond-CI
AQUAFIN
Emaco P24
BASF
(Water -based epoxy-cementitious)
Powerprep AC
STO
Planibond 3C
Mapei
(Water -based Epoxy)
Zincrich
BASF
(Epoxy prinner w/ Zinc)
Mapefer 1 K
Mapei
(Cernenfitious Polymeric)
StoPowerwall Stucco (80103) STO
ASTM C 926-compliant field -mixed stucco
END OF SECTION
3 !1,::: 0
AA9
"; CM
BUNKER ENGINEERING & CONSTRUCTION SERVICES, INC.
120 North Federal Highway, Suite 305, Lake Worth, FL 33460
SECTION 0500 F LE COPY
MISCELLANEOUS
A. Engineering Approvals/ Inspections /Extensions
a. The engineer shall inspect and approve, as required, all limits and the extent of all
work.
b , The engineer shall verify measurements and certify, as required, all unit price items.
C. The engineer shall approve specifications for all contractor supplied materials at
least 5 days prior to material use or placement.
d. The engineer shall approve all work completed and all contractor billing, as
required. The owner(s) are not obligated to pay for any work not approved by the
engineer.
e. The engineer must approve all requests for work extensions or delays beyond the
contract completion date.
B. Completion Time
a. Substantial completion shall be determined when all work is completed or placed,
cleaning and painting is completed, scaffolding is removed and contractor's
equipment is removed from the work area.
b. Extension time shall be approved for increases on the scope of work prorated
based on quantities of work completed.
c. Extension time shall be approved for weather delays or other delays beyond the
contractor's control.
d. At engineers' discretion, correction or finish items that remain beyond the
completion date will not change the completion date of the project.
e. Any disputes regarding extension time and completion time shall be settled as
determined and approved by the engineer.
f. The contractor shall be liable for engineering inspection fees when repair work goes
beyond the completion date.
C. Additional Work or Work Not Anticipated
a. The contractor assumes responsibility for contract quantities for lump sum pricing
including field measurements and verification of existing dimensions. Quantities
and/or dimensions provided in the project specifications are estimates and for
reference only.
b. Contract quantities for unit price contract items will be based on actual quantities
approved by the engineer. Min width for small area concrete repair quantities will
be based on %of rebar spacing, or not to exceed 6".
c. All work anticipated to be performed on this project, or normally expected to be
performed in doing similar work as on this project is intended to be included at no
extra cost, unless separately listed on the contract pricing page exhibit, or separate
pricing as provided for in a signed contract addendum or change order, or
otherwise acknowledged and approved by the owner in writing.
d. Any additional work requested or unanticipated work needed must be brought to the
attention of the engineer before doing the work. Any questions regarding pricing for
the work must be resolved before actually doing the work. The contractor shall have
the opportunity to propose pricing for any such work not covered by contract. Any
such work should only be performed upon acceptance of the proposed pricing by the
owner in writing.
BUNKER ENGINEERING & CONSTRUCTION SERVICES, INC.
120 North Federal Highway, Suite 305, Lake Worth, FL 33460
2'. A
our,
e. The owner(s) are not obligated to make payments for any such work performed that
is not provided for in the contract, or a contract addendum or change order,
otherwise acknowledged and approved by the owner in writing.
f. If unanticipated work is discovered that is absolutely required to be completed to
ensure structural safety or is otherwise in the critical path for project completion, the
engineer shall request, and the contractor shall provide a proposed change order
for the work and pricing. The engineer will determine cost reasonability based on
experience and knowledge of the work. If the owner does not execute said change
order after the engineer recommends approval, or does not contract for and have
the work done in a timely manner as determined by the engineer, the engineer shall
have authority to approve and execute the change order document and the owner
will be obligated to pay for said work.
D. Electrical Power
a. Unless otherwise provided for in the contract documents, the Association is
responsible for the cost of electric power for the project. The Association is also
responsible for providing a reasonable access point to the buildings power supply.
The contractor is responsible for coordinating the hook up to the provided power
supply. If an electrician is required for any temporary connections or modifications,
the contractor is responsible for coordinating the work, and the Association is
responsible for the cost. Any disputes shall be settled by the engineer.
E. Cleaning and Safety During the Project
a. Provide necessary protection at work areas, as required, during work to protect
from dust and debris entering interior spaces. Provide protection to adjoining
property, as required and in accordance with code requirements.
b. At the end of each workday, secure or store all equipment, machinery, materials,
etc. All swing stages are to be securely tied off when not in use. All swing stages,
equipment, machinery, materials, etc. are to be removed from the site at the
issuance of a tropical storm or hurricane warning.
c. Maintain the material storage and work areas in a clean and safe condition and
remove from the site, on a daily basis, flammable cloths and discarded materials that
could support combustion and, at least weekly, remove empty containers, boxes and
bags. All debris and rubbish must be placed in approved clumpsters on a daily basis
and clumpsters empfied as required on a regular basis.
d. Keep approved fire extinguishers on hand for quick access, as required in Section
3309 of the Florida Building Code.
e. Ensure compliance with all safety requirements, as required by law, such as use of
safety harnesses, hard hats, and other equipment and procedures, as required.
f. On site portable sanitary facilities are required and should be located as directed by
the owner and maintained on a weekly basis.
Cleaning and Restoration of Property at Completion of Project
a. Promptly remove all debris, materials, equipment, etc., from the site and leave the
premises of the buildings, driveways, and deck areas clean. Clean surface areas of
excess epoxy, cementitious materials, bonding agent, coatings, sealants, etc.
b. Remove excess materials and debris from job site. Leave areas in as clean a
condition as when first arrived at job site.
c. Reinstall all exterior building components removed or adjusted to providing access
for doing work. The reinstallation shall be done using the materials and
workmanship that would be expected for a new installation, taking into
BUNKER ENGINEERING & CONSTRUCTION SERVICES, INC.
120 North Federal Highway, Suite 305, Lake Worth, FL 33460
-win
consideration any installation difficulties caused by existing defects or changes in
the building. Any reinstallation problems must be brought to the attention of the
engineer.
d. Replace or repair any areas damaged during the progress of work.
e. Replace all sod as required and any plants damaged beyond reasonable condition
during the progress of work.
G. Responsibility for Exterior Areas
a. The contractor will be responsible for securing and restricting free access to work
areas where is work being performed. The contractor must notify the condominium
in writing when and if any work areas cannot be safely secured at the end of each
workday.
b. The contractor will be held responsible for repairing exterior damages and cleaning
concrete and coating splatter caused by carelessness or lack of protection while
performing the work identified in the scope of work and work items list. Contractor
must provide adequate covering for doors, railing systems, steel columns, light
fixtures, etc. as required during the work.
c. If, for purposes of cleaning up at project completion, contractor's desires to apply
paint over concrete and/or coating splatter on any existing surfaces (i.e.: aluminum
railings, shutter, steel columns, etc.) as part of cleaning or repairing of exterior
damages, Contractor is responsible to obtain Owner's prior written approval.
d. The contractor will be held responsible for repairing damages caused by
carelessness or lack of protection while performing the work identified in the scope
of work and work items list. Contractor must anticipate and provide adequate
protection as required during the work for hidden utilities in building structures, Le.:
electric conduits Water and phone lines, etc. Contractor Will not be held responsible
for any underground utilities. Any question regarding contractor's responsibility to
repair damaged electric conduits, water and phone lines, etc. shall be determined
by the engineer.
e. Unless otherwise provided for, the contractor will not be held responsible for
unavoidable damages, including but not limited to exterior wall areas, pavement, or
landscaping.
f. The engineer shall determine any disputes regarding reasonableness of repairs.
H. Warranties
1. Provide the owner(s) with a contractors warranty on the installation and workmanship
for these repairs for a period of not less than five years from the substantial completion
date of the project. This warranty shall only apply to new materials placed or work
performed and shall not apply to existing areas not repaired.
Provide the owner(s) with material manufacturers'warranties (if available) on the
manufactured products used for these repairs for a period of not less than five years
from the date of completion of the project. The material warranties shall only apply to
material defects and coverage shall include material and labor costs for replacement of
defective materials. Any disputes regarding warranty responsibility for defects shall be
settled as determined and approved by the engineer. Letters of manufacturers' intent
to warranty and copies of manufacturers' warranties must be provided by the contractor
and attached to the construction contract. Certified copies of manufacturers'warranties
must be provided by the contractor at completion of all work and prior to final payment
of retainage from the owners. Eff6ctive date of the warranties shall be the completion
date of the project as determined by the engineer.
BUNKER ENGINEERING & CONSTRUCTION SERVICES, INC.
120 North Federal Highway, Suite 305, Lake Worth, FL 33460
K. Shrinkage cracks are anticipated for new concrete and stucco placements in restoration
work. The quantity of shrinkage cracks is partially dependent on the quality of the
damp curing and early protection from the wind and sunlight. For a period of not less
than one year from the date of completion of the project, epoxy injection repair of
shrinkage cracks for repaired areas shall be provided at no extra cost to the owners.
The cost for the repair of shrinkage cracks should be built into and included with the
contract cost of the new concrete or stucco. Epoxy injection repairs at no cost shall
only apply to the epoxy injection work and shall not include costs for removal of
accessories, repair of coatings, or touch up painting of epoxy injected areas.
END OF SECTION
poll
M "If
BUNKER ENGINEERING & CONSTRUCTION SERVICES, INC.
120 North Federal Highway, Suite 305, Lake Worth, FL 33460
F LE COPY
SECTION 0600
REPAIR LOCATIONS
(REPAIR LOCATIONS AND QUANTITIES TO BE MARKED BY ENGINEER OF RECORD)
Column repair
BUNKER ENGINEERING & CONSTRUCTION SERVICES, INC.
120 North Federal Highway, Suite 305, Lake Worth, FL 33460