093986.00_DEC202023_ADD A.pdf

093986.00_DEC202023_ADD A 1

43980 Plymouth Oaks Blvd.

Plymouth, MI 48170-2584

(734) 454-9900 www.sme-usa.com

ADDENDUM A

OWNER: Oakland University

DATE: December 12, 2023

PROJECT: 2024 Parking Structures P29/P32 Repairs

ARCHITECT/ENGINEER: SME

PREPARED BY: Nate Sexton, PE

REVIEWED BY: Hayder Al-Hilal, PE

SME PROJECT NO.: 093986.00

INTENT:

This Addendum forms a part of and modifies or clarifies the original Bidding Documents.

Unless modified by this Addendum, complete work in accordance with original Bidding Documents.

CONTENTS:

The following items comprise this Addendum:

A. ATTACHMENTS

I. Specification: Revised 079200 Joint Sealant Specification Section

II. Drawings: Revised Sheet S5.1 with properly renumbered details, issued FOR BID, dated 12/19/23

B. CLARIFICATIONS (QUESTIONS AND ANSWERS)

1. Is the ramp from the Second Level to Roof Level to be included in the traffic coating replacement limits for Alternate #4?

a. Yes. Include the entirety of the Roof Level and the entire ramp from the Second Level to Roof Level.

2. Can As-Built drawings for Bear Lake Bridge be uploaded for reference?

a. OU to provide As-Built reference drawings.

3. Is restriping of parking stalls to be included with traffic coating replacement as part of Alternate #4?

a. Yes. Provide restriping of roof deck and ramp as part of Alternate #4.

4. What traffic coating system is required for this project? Full? Or recoat primer, sand and top?

093986.00_DEC202023_ADD A 2

a. From specification section 071816:

I. Auto-Gard E Urethane/Epoxy Hybrid System by Neogard, a part of Hempel, 2728 Empire Central, Dallas, TX 75235, (800) 321-6588, www.neogard.com.

II. Remove all traffic coating from substrate and apply new Neogard hybrid system where specified.

5. Do we have to remove all coating?

a. Remove all traffic coating from substrate and apply new Neogard hybrid system where specified.

6. Detail #13 – Typically urethane is used, not silicone. Is there an alternative option?

a. From revised specification section 079200:

I. Products: Subject to compliance with requirements, provide one of the following:

1. Exposed control and expansion joint and horizontal cracks: DOWSIL 890-SL.

2. Wall joints and cove: DOWSIL 790.

3. Coated joints and cracks: manufacturer’s approved sealant

b. Silicone sealant is to be used at exposed control and expansion joints. Where applying traffic coating, manufacturer’s approved sealant is to be used. Typically, the manufacturer’s approved sealant with this type of traffic coating is urethane-based.

7. Detail #12 shows tape, but Detail #13 shows silicone. Should these be different?

a. Yes. Refer to answer to Question #6 for information on different sealant types for different applications.

8. Does the partial depth for the shear connector replacement (Alternate #1) get included in this or is the partial depth separate?

a. The partial depth concrete repair at shear connector replacement locations is included in Alternate #1 scope as incidental.

9. What is the starting time of the project?

a. Targeted start date of the project is mid-to-late May 2024.

10. Repair Type 7 on Sheet S1.3 refers to Detail 16/Sheet S5.1. Should this reference Detail 15/Sheet S5.1?

a. This is correct. A revised Sheet S5.1 is provided as an attachment with the details properly numbered.

11. Repair Type 5 on Sheet S1.4 “Joint Sealant Replacement” refers to Detail 14/Sheet S5.1 which is for repair of an expansion joint, please clarify which detail to use?

a. A revised Sheet S5.1 is provided as an attachment with the details properly numbered. The new Detail 14 is the correct reference for Repair Type 5.

12. Is the concrete work for the drain replacement and shear connection work items part of these items or will it be paid under the concrete work items?

093986.00_DEC202023_ADD A 3

a. The concrete repair and traffic coating replacement for the drain replacements are incidental to the drain replacement work item and should be included in the drain replacement unit cost. Concrete repair for shear connector replacement is incidental to the shear connector replacement work item and should be included in the shear connector replacement unit cost.

13. Dowsil 790 is specified in Section 079200. Please clarify where this sealant will be used.

a. From revised specification section 079200:

I. Products: Subject to compliance with requirements, provide one of the following:

1. Exposed control and expansion joint and horizontal cracks: DOWSIL 890-SL.

2. Wall joints and cove: DOWSIL 790.

3. Coated joints and cracks: manufacturer’s approved sealant

b. The base bidding item #6 for Parking Structure P32 includes silicone sealant to be used to replace horizontal joint sealant with no traffic coating.

14. Is Detail 13/Sheet S5.1 to be used for this project? If so, please specify where.

a. From revised specification section 079200:

I. Products: Subject to compliance with requirements, provide one of the following:

1. Exposed control and expansion joint and horizontal cracks: DOWSIL 890-SL.

2. Wall joints and cove: DOWSIL 790.

3. Coated joints and cracks: manufacturer’s approved sealant

b. The Bidding Item #6 for Parking Structure P32 includes silicone sealant to be used to replace horizontal joint sealant with no traffic coating.

15. Bidding Item #6/Parking Structure P29 – Double Tee Full-Depth Repair; does this item include traffic coating as incidental?

a. The full-depth repair included in Bidding Item #6 outside of locations over inverted tee beams does not include incidental traffic coating. Full-depth repair over inverted tee beams with thicker topping slabs as part of the concrete washes is to be traffic coated and should be included in the quantities for Bidding Item #5/Parking Structure P29.

16. Bidding Items #8b and 9b – Stair Landing Replacement per Detail 7/Sheet S5.1; are the L3x3x1/4 to be replaced?

a. Yes. Include replacement of all L3x3x1/4 members supporting landings to be replaced.

093986.00_DEC202023_ADD A 4

17. Alternate #2- refer to detail 13/S5.1 is this should be 12/S5.1 please confirm?

18. Alternate #3- refer to detail 15/S5.1 is this should be 14/S5.1 please confirm?

19. Alternate #5- Refer to detail 13/S5.1 is this should be 12/S5.1 please confirm?

a. These are all correct. A revised Sheet S5.1 is provided as an attachment with the details properly numbered.

20. Alternate #4 – Please clarify is we need to remove the existing coating in its entirety or just the damaged/debonded locations?

a. Remove all traffic coating from substrate and apply new Neogard hybrid system where specified.

21. Alternate #3 – Please provide a joint width of the expansion joint for bidding purposes.

a. Expansion joint widths are typically three inches.

22. Section 071816- Vehicular Traffic Coating refers to only one material “Neogard”, we are assuming that other products manufactured by Sika, LymTal, etc. of equal or better quality than Neogard are also allowed, please clarify.

a. Substitution products can be submitted to SME for review and will be approved or rejected after award of the project. Do not assume that substitution products will be immediately accepted.

23. Will the contractor be given full access to the parking structures work locations to close all traffic during construction?

a. From OU: Yes, if needed; OU to review contractor’s schedule against campus events.

24. Will the contractor only be allowed to work at one staircase at a time?

a. From OU: There is a possibility to work on both staircases of P29 at the same time; OU to review contractor’s schedule against campus events.

END OF ADDENDUM

If there are any questions regarding the report or if additional assistance in this matter is desired, please do not hesitate to contact the undersigned.

Very truly yours, SME

PREPARED BY: REVIEWED BY:

Nate Sexton, PE Hayder Al-Hilal, PE Project Engineer Senior Consultant

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Orientation

Project Location

Sheet Name

Scale

Engineer's Seal

SME Project No.

Project Manager:

CADD:

Checked By:

Sheet No.

www.sme-usa.com

DRAWING NOTE: SCALE DEPICTED IS MEANT FOR 24" X 36" AND

WILL SCALE INCORRECTLY IF PRINTED ON ANY OTHER SIZE

MEDIA

Date

Designer:

Reviewed By:

OAKLAND UNIVERSITY

PARKING STRUCTURES

P29/P32 REPAIRS

429 PIONEER DRIVE

ROCHESTER HILLS,

MI 48309

270 GRIZZLY LANE

AUBURN HILLS, MI 48326

12-19-23

093986.00

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BK

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S5.1

BID 12-19-23

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CONCRETE DECK

NOTES:

1. THOROUGHLY CLEAN JOINT FREE OF EXISTING SEALANT MATERIALS.

2. REPAIR DETERIORATED CONCRETE AREA PER DETAIL NO. 8 AND NO. 9.

3. APPLY SPECIFIED SEALANT AFTER THE REPAIR CONCRETE HAS CURED.

4. CONDUCT FIELD TEST FOR EACH TYPE OF SEALANT AND JOINT

SUBSTRATE PRIOR TO CONSTRUCTION AND AT 14 DAYS AFTER SEALANT

APPLICATION. CONDUCT FIELD TEST IN ACCORDANCE TO METHOD A,

FIELD-APPLIED SEALANT JOINT HAND PULL TAB, IN APPENDIX X1 IN

ASTM C 1193.

SILICONE SEALANT

MINIMUM WIDTH 12"

CLOSED CELL BACKER ROD TO BE

UNDER COMPRESSION 25% LARGER

THAN JOINT WIDTH

JOINT SEALANT REPLACEMENT

NOT TO SCALE

1/ 2"

1/ 4"

SEALANT JOINT PROFILE TABLE

WIDTH (W) DEPTH (D)

UP TO 1/2" 1/4"

1/2" TO 1" W/2

LARGER THAN 1" CONSULT WITH SEALANT

MANUFACTURER

TYPICAL CONTROL JOINT COATING REPAIR

NOT TO SCALE

S1.2

NOTE: ALL LONGITUDINAL DOUBLE TEE JOINTS AT ROOF LEVEL

REPAIR TYPE NO. 11

EXISTING CONCRETE

TREAD, TYP

∠11 2x11

2x3

EXISTING

METAL PAN, TYP

EXISTING STRINGER

1/8

BOTTOM TREAD

SUPPORT ANGLE

SCALE: NTS

S1.1

COL

SECTIONS AND

DETAILS

2' -8

2"

2"

4" F

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PC COL

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TYPICAL INVERTED TEE BEAM DECK REPAIR

SCALE: 34" = 1'-0"

S1.2

PC DOUBLE TEE TYP.

CIP CONC

WASH

8"x1" SAWCUT CONTROL

JOINT W/SEALANT TYP.

REF. DETAIL 12 THIS SHEET

FOR COATING

REINFORCEMENT AT

SEALED JOINT

EXISTING EPOXY COATED

WWF REF TO DETAIL 3

THIS SHEET

4-#5 CONT EPOXY

COATED BARS

TOOLED JOINT W/CAULKING TYP.

REF. DETAIL 12 THIS SHEET FOR

COATING REINFORCEMENT AT

SEALED JOINT

PERIMETER SAWCUT,

TYP

ROUT-AND-SEAL

CONSTRUCTION JOINT3" TO CENTERLINE

DOWEL AND BOTTOM

REINFORCEMENT

EXISTING

DOUBLE TEE,

TYP

2"

4" E

XI

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IN

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F

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EXISTING EMBEDDED PLATE

(DETERIORATED OR MISSING)

REMOVE AS REQUIRED TO

INSTALL NEW DEFORMED BAR

4"

FL

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MINIMUM CSP

8 ROUGHNESS,

TYP

EXISTING GAP VARIES

REMOVE DETERIORATED

CONCRETE TO SOUND MATERIAL

1" C

LR

T

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#4 x 2'-6" @ 12" OC

EPOXY-COATED, DRILL AND SET

INTO HILTI HIT-HY200 ADHESIVE

12" MIN EMBEDMENT FULL

PERIMETER OF REPAIR #4 @ 6" OC EACH WAY

GRADE 60

DEFORMED BAR

OR CLOSED CELL

BACKER ROD EXISTING GAP VARIES

REPAIR CONCRETE PRIOR TO

SEALANT INSTALLATION TYP

EXISTING

SHEAR

TRANSFER

DEVICE

EMBEDDED IN

CONCRETE

AS REQUIRED

TYP

AS

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3 4" S

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X, VARIES

(V.I.F.) 6" MIN

1 2 X

TRAFFIC

COATING

BOND BREAKER

NOTE:

IF GAP BETWEEN EXISTING DOUBLE TEES

IS GREATER THAN 11

2", CONTACT

CONSULTING ENGINEER FOR

INSTRUCTIONS ON HOW TO PROCEED

PLAN VIEW

POLYURETHANE

COATING

CLOSED CELL

BACKER ROD, TYP

X

CONCRETE REPAIR, TYP

DEFORMED BAR

SHEAR

CONNECTION WITH

BOND BREAKER

ENLARGED JOINT REPAIR11

S1.1

SHEAR CONNECTION (REPAIR)

SCALE: 2" = 1'-0"

S1.1

SCALE: 2" = 1'-0"

SHEAR CONNECTION (PARTIAL DEMOLITION)

SCALE: 2" = 1'-0"

S1.1

6" MIN

(V .I.

F.

CONCRETE TREAD

INFILL

NOSING

REPLACE STAIR TREAD SYSTEM

SCALE: 1 12" = 1'-0"

S1.1

EXISTING STRUCTURAL

STEEL STRINGER

12GA METAL TREADS WITH

MATCHING DIMENSIONS

AS EXISTING

DRAIN AND CONDUCTOR REPLACEMENT

SCALE: 1 12" = 1'-0"

CL OF DRAIN

REPLACED PIPING TO BE

TIED INTO EXISTING PIPING

AS SHOWN ON PLAN

PRECAST CONC DOUBLE

TEE SYSTEM

4" 6"

VIF

2'-0" VIF

TYP

DOUBLE TEE FLANGE REPAIR

SCALE: 34" = 1'-0"

W.W.F. SPLICE

SCALE: 34" = 1'-0"

BOLLARD REPLACEMENT

SCALE: 34" = 1'-0"

S1.1

1 4"

2"

FINISH COAT

TRAFFIC COATING

SYSTEM

CUT 14" DEEP X 12" WIDE

REGLET INTO CONCRETE FOR

PROPER TERMINATION

FILL REGLET WITH FINISH

COAT

TYP AT TRAFFIC

COATING

TERMINATION

TYPICAL COATING HORIZONTAL

TERMINATION12

SCALE: NTS

P29 ALTERNATE NO. 2 - TRAFFIC COATING

DETAIL AT TEE-TEE LONGITUDINAL JOINTS

2" SAWCUT AT

PERIMETER OF REPAIR

AREA, TYP

REMOVAL

LIMIT, TYP EXISTING EXPOSED

REINFORCING, TYP

EXPANSION JOINT REPAIR

NOT TO SCALE

S1.1

DOUBLE TEE STEM REPAIR

SCALE: 3" = 1'-0"

S1.1

∠11 2x11

2x3

1/8

3 12"

2" TYP

3 4"

EXPANSION JOINT OPENING

1" DIA HOLES PUNCHED @

2" OC IN MEMBRANE

COAT BASE OF BLOCKOUT WITH

WABOCRETE TACK COAT PRIMER

(TYPICAL)

WABOCRETE HEADER

(POURED-IN-PLACE)

REPLACE VEHICULAR

TRAFFIC COATING

INSTALL ZURN Z53X, SERIES HEAVY DUTY

DRAIN WITH GALVANIZED CAST IRON BODY

NO-HUB (NH) BOTTOM OUTLET, HEAVY DUTY

DRAIN SUPPORTED FLANGES, HEAVY DUTY

SLOTTED GRATE, AND SEDIMENT BUCKET

RECESS TOP OF DRAIN BELOW

TOP OF CONCRETE SLAB AND

SLOPE NEW CONCRETE TO

PROMOTE DRAINAGE

TRAFFIC COATING

SYSTEM

FINISHED SURFACE

NOTES:

1. ALL DIMENSIONS WITH MANUFACTURER'S REQUIREMENTS.

2. REMOVE SOUND AND UNSOUND CONCRETE AS NEEDED TO

CONSTRUCT BLOCKOUT

3. COST OF CONCRETE REMOVAL AND PLACEMENT INCIDENTAL

TO EXPANSION JOINT REPAIR

4. VEHICULAR TRAFFIC COATING COST INCIDENTAL

STAIR LANDING REPLACEMENT

SCALE: 3/4" = 1'-0"

C5x6.7 TO

REMAIN

FACE OF

STAIR WALL

L3x3x1

4 AROUND

PERIMETER

METAL PLATE TO

MATCH EXISTING WITH

CONC INFILL

TYP

12 TYP

TYP

ELASTOMERIC

COATING SYSTEM

STRINGER TO

REMAIN

2"

TO

PP

IN

G

CONCRETE REPAIR NOTES:

1. DETERIORATED CONCRETE

SURFACE DIMENSIONS MAY VARY.

2. REMOVE CONCRETE IN REPAIR

AREA AND PATCH WITH SPECIFIED

REPLACEMENT REPAIR CONCRETE.

3. PATCH LOCATIONS WILL BE FIELD

VERIFIED BY THE ENGINEER PRIOR

TO STARTING DEMOLITION

ACTIVITIES.

4. PROVIDE FINAL PREPARED

SURFACE MEETING ICRI CONCRETE

SURFACE PROFILE, CSP-8, VIA WET

ABRASIVE BLASTING OR

HYDRO-DEMOLITION METHOD.

5. BLAST CLEAN EXPOSED

REINFORCING BARS, SUPPLEMENT

OR REPLACE IF DAMAGED OR IF

SECTION LOSS IS MORE THAN 20%

AS DETERMINED BY THE ENGINEER.

6. COAT PREPARED REINFORCING

BARS WITH SPECIFIED RUST

PRIMER.

7. DAMPENED CONCRETE SURFACE

TO MEET SATURATED SURFACE

DRY, SSD, CONDITION PRIOR TO

REPAIR CONCRETE APPLICATION.

** DO NOT SAWCUT INTO EXISTING

REINFORCING STEEL.

MATCH EXISTING CONCRETE

TOPPING LIMITS AT WASH

TO

PP

IN

G

VA

RI

ES

EXISTING WWF

DETAIL A:

DOUBLE TEE FLANGE

REPAIR AT LONGITUDINAL

JOINTS

NOTE:

SALVAGE LIGHT FIXTURE AND WIRING AND REINSTALL AFTER STAIR LANDING REPLACEMENT

WWF 4x4-W4.0XW4.0, EPOXY COATED

2" C

LR

1'-3" 1'-3"

2" CLR

VIF

VIF

1'-6"

2" CLEAR

TYP

JOINT BETWEEN

DOUBLE TEE

FLANGES

A

M

ID

H

EI

G H

T O

F

FL

AN

G

E

#4 x Z-SHAPED @ 9" OC

EPOXY-COATED, DRILL AND SET

INTO HILTI HIT-HY200 ADHESIVE

6" MIN EMBEDMENT ALL

AROUND PERIMETER OF REPAIR

REPAIR CONCRETE

EXISTING PRESTRESS

STRAND, TYP

4-6" TYP.

RECOAT CONCRETE

REPAIR AREA TO MATCH

EXISTING. EXTEND

COATING 2" MIN INTO

ADJOINING SURFACES

RECOAT CONCRETE

REPAIR AREA TO

MATCH EXISTING.

EXTEND COATING 2"

MIN INTO ADJOINING

SURFACES

2024 OU P29/P32 PARKING STRUCTURES REPAIRS

SME PROJECT NUMBER 093986.00 – JOINT SEALANTS 079200-1

SECTION 07 92 00 - JOINT SEALANTS

PART 1 - GENERAL

1.1 SUMMARY

A. Section Includes:

1. Silicone joint sealants.

1.2 PREINSTALLATION MEETINGS

A. Preinstallation Conference: Conduct conference at the Project Site.

1.3 ACTION SUBMITTALS

A. Product Data: For each joint-sealant product.

B. Samples: For each kind and color of joint sealant required.

1.4 INFORMATIONAL SUBMITTALS

A. Product test reports.

B. Preconstruction testing reports.

C. Sample warranties.

1.5 QUALITY ASSURANCE

A. Installer Qualifications: An authorized representative who is trained and approved by manufacturer.

1.6 PRECONSTRUCTION TESTING

A. Preconstruction Field-Adhesion Testing: Before installing sealants, field test their adhesion to Project joint substrates. Test joint sealants according to Method A, Field-Applied Sealant Joint Hand Pull Tab, in Appendix X1.1 in ASTM C 1193 or Method A, Tail Procedure, in ASTM C 1521.

1.7 FIELD CONDITIONS

A. Do not proceed with installation of joint sealants under the following conditions:

1. When ambient and substrate temperature conditions are outside limits permitted by joint sealant manufacturer.

2. When joint substrates are wet.

SME PROJECT NUMBER 093986.00 – JOINT SEALANTS 079200-2

3. Where joint widths are less than allowed by joint-sealant manufacturer for applications indicated.

4. Where contaminants capable of interfering with adhesion have not yet been removed from joint substrates.

1.8 WARRANTY

A. Special Installer's Warranty: Installer agrees to repair or replace joint sealants that do not comply with performance and other requirements specified in this Section within specified warranty period.

1. Warranty Period: Two years from date of Substantial Completion.

B. Special Manufacturer's Warranty: Manufacturer agrees to furnish joint sealants to repair or replace those joint sealants that do not comply with performance and other requirements specified in this Section within specified warranty period.

1. Warranty Period: Five years from date of Substantial Completion.

C. Special warranties specified in this article exclude deterioration or failure of joint sealants from the following:

1. Movement of the structure caused by stresses on the sealant exceeding sealant manufacturer’s written specifications for sealant elongation and compression.

2. Disintegration of joint substrates from causes exceeding design specifications.

3. Mechanical damage caused by individuals, tools, or other outside agents.

4. Change in sealant appearance caused by accumulation of dirt or other atmospheric contaminants.

PART 2 - PRODUCTS

2.1 JOINT SEALANTS, GENERAL

A. Colors of Exposed Joint Sealants: As selected by Owner from manufacturer's full range.

B. Compatibility: Provide joint sealants, backings, and other related materials that are compatible with one another and with joint substrates under conditions of service and application, as demonstrated by joint sealant manufacturer, based on testing and field experience.

2.2 NONSTAINING SILICONE JOINT SEALANTS

A. Nonstaining Joint Sealants: No staining of substrates when tested according to ASTM C 1248.

B. Silicone, Nonstaining, S, NS, 100/50, NT: Single-component, nonsag, plus 100 percent and minus 50 percent movement capability, nontraffic-use, neutral-curing silicone joint sealant; ASTM C 920, Type S, Grade NS, Class 100/50, Use NT.

SME PROJECT NUMBER 093986.00 – JOINT SEALANTS 079200-3

1. Products: Subject to compliance with requirements, provide one of the following:

a. Exposed control and expansion joint and horizontal cracks: DOWSIL 890-SL.

b. Wall joints and cove: DOWSIL 790.

c. Coated joints and cracks: manufacturer’s approved sealant

2.3 JOINT-SEALANT BACKING

A. Cylindrical Sealant Backings: ASTM C1330, Type C, closed cell material with a surface skin as approved in writing by joint-sealant manufacturer for joint application indicated, and of size and density to control sealant depth and otherwise contribute to producing optimum sealant performance.

1. Install joint backing to maintain the following joint ratios:

a. Joints up to 1/2-inch-wide: 1:1 width to depth ratio.

b. Joints greater than 1/2-inch-wide: 2:1 width to depth ratio; maximum 1/2-inch joint depth.

B. Bond-Breaker Tape: Polyethylene tape or other plastic tape recommended by sealant manufacturer.

2.4 MISCELLANEOUS MATERIALS

A. Primer: Material recommended by joint-sealant manufacturer where required for adhesion of sealant to joint substrates indicated, as determined from preconstruction joint-sealant-substrate tests and field tests.

B. Cleaners for Nonporous Surfaces: Chemical cleaners acceptable to manufacturers of sealants and sealant backing materials.

C. Masking Tape: Nonstaining, nonabsorbent material compatible with joint sealants and surfaces adjacent to joints.

PART 3 - EXECUTION

3.1 EXAMINATION

A. Examine joints indicated to receive joint sealants, with Installer present, for compliance with requirements for joint configuration, installation tolerances, and other conditions affecting performance of the Work.

B. Proceed with installation only after unsatisfactory conditions have been corrected.

3.2 PREPARATION

A. Removal of Failed Joint Sealant Materials: Cut out and remove joint materials and associated backing materials as indicated on the drawings or identified by the Consultant.

SME PROJECT NUMBER 093986.00 – JOINT SEALANTS 079200-4

B. Surface Cleaning of Joints: Clean out joints immediately before installing joint sealants to comply with joint-sealant manufacturer's written instructions and the following requirements:

1. Remove foreign material from joint substrates that could interfere with adhesion of joint sealant, including dust, paints (except for permanent, protective coatings tested and approved for sealant adhesion and compatibility by sealant manufacturer), old joint sealants, oil, grease, waterproofing, water repellents, water, surface dirt, and frost.

2. Clean nonporous joint substrate surfaces with chemical cleaners or other means that do not stain, harm substrates, or leave residues capable of interfering with adhesion.

3. Clean porous joint substrate surfaces by brushing, grinding, mechanical abrading, or a combination of these methods in addition to solvent cleaning to produce a clean, sound substrate capable of developing optimum bond with joint sealants. Remove loose particles remaining after cleaning operations above by vacuuming or blowing out joints with oil-free compressed air.

4. Remove laitance and form-release agents from concrete.

C. Joint Priming: Prime joint substrates where recommended by joint-sealant manufacturer or as indicated by preconstruction joint-sealant-substrate tests or prior experience.

D. Masking: Use masking tape where required to prevent contact of sealant or primer with adjoining surfaces to prevent staining or damage.

3.3 INSTALLATION OF JOINT SEALANTS

A. General: Comply with ASTM C 1193 and joint-sealant manufacturer's written installation instructions for products and applications indicated, unless more stringent requirements apply.

B. Install sealant backings of kind indicated to support sealants during application and at position required to produce cross-sectional shapes and depths of installed sealants relative to joint widths that allow optimum sealant movement capability.

C. Install bond-breaker tape behind sealants where sealant backings are not used between sealants and backs of joints.

D. Install sealants using proven techniques that comply with the following and at the same time backings are installed:

1. Place sealants so they directly contact and fully wet joint substrates.

2. Completely fill recesses in each joint configuration.

3. Produce uniform, cross-sectional shapes and depths relative to joint widths that allow optimum sealant movement capability.

E. Tooling of Nonsag Sealants: Immediately after sealant application and before skinning or curing begins, tool sealants to form smooth, uniform beads of configuration indicated. Use tooling agents that are approved in writing by sealant manufacturer and that do not discolor sealants or adjacent surfaces.

1. Remove excess sealant from surfaces adjacent to joints.

SME PROJECT NUMBER 093986.00 – JOINT SEALANTS 079200-5

2. Use tooling agents that are approved in writing by sealant manufacturer and that do not discolor sealants or adjacent surfaces.

3. Provide concave joint profile per Figure 8A in ASTM C 1193 unless otherwise indicated.

3.4 FIELD QUALITY CONTROL

A. Tests and Inspections:

1. Field-Adhesion Testing: Field test joint-sealant adhesion to joint substrates as follows:

a. Extent of Testing: Test completed and cured sealant joints as follows:

1) Perform one test for each 1000 ft. of joint length thereafter.

b. Test Method: Test joint sealants in accordance with Method A, Tail Procedure, in

ASTM C1521.

1) For joints with dissimilar substrates, verify adhesion to each substrate separately; extend cut along one side, verifying adhesion to opposite side.

Repeat procedure for opposite side.

c. Inspect tested joints and report on the following:

1) Whether sealants filled joint cavities and are free of voids.

2) Whether sealant dimensions and configurations comply with specified requirements.

3) Whether sealants in joints connected to pulled-out portion failed to adhere to joint substrates or tore cohesively. Include data on pull distance used to test each kind of product and joint substrate. Compare these results to determine if adhesion complies with sealant manufacturer's field-adhesion hand-pull test criteria.

d. Record test results in a field-adhesion-test log. Include dates when sealants were installed, names of persons who installed sealants, test dates, test locations, whether joints were primed, adhesion results and percent elongations, sealant material, sealant configuration, and sealant dimensions.

e. Repair sealants pulled from test area by applying new sealants following same procedures used originally to seal joints. Ensure that original sealant surfaces are clean and that new sealant contacts original sealant.

2. Evaluation of Field-Adhesion-Test Results: Sealants not evidencing adhesive failure from testing or noncompliance with other indicated requirements will be considered satisfactory.

Remove sealants that fail to adhere to joint substrates during testing or to comply with other requirements. Retest failed applications until test results prove sealants comply with indicated requirements.

B. Prepare test and inspection reports.

SME PROJECT NUMBER 093986.00 – JOINT SEALANTS 079200-6

3.5 CLEANING

A. Clean off excess sealant or sealant smears adjacent to joints as the Work progresses by methods and with cleaning materials approved in writing by manufacturers of joint sealants and of products in which joints occur.

3.6 PROTECTION

A. Protect joint sealants during and after curing period from contact with contaminating substances and from damage resulting from construction operations or other causes so sealants are without deterioration or damage at time of Substantial Completion. If, despite such protection, damage or deterioration occurs, cut out, remove, and repair damaged or deteriorated joint sealants immediately so installations with repaired areas are indistinguishable from original work.

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B. Bond-Breaker Tape: Polyethylene tape or other plastic tape recommended by sealant manufacturer.

2. Evaluation of Field-Adhesion-Test Results: Sealants not evidencing adhesive failure from testing or noncompliance with other indicated requirements will be considered satisfactory. Remove sealants that fail to adhere to joint substrates during tes...

B. Prepare test and inspection reports.