20240124 - Addendum #1 - Onekama 2024 S.F..pdf

2024 Sinking Fund Onekama Consolidated Schools

ENGINEERS w SURVEYORS w PLANNERS w ARCHITECTS

ADDENDUM NO. 1

ONEKAMA CONSOLIDATED SCHOOLS 2024 SINKING FUND

ALL PROSPECTIVE BIDDERS ON THE SUBJECT PROJECT

Issued: January 24, 2024

Acknowledge Receipt of this Addendum on Page P-1 of the Bidform (Proposal) where indicated.

Please note the following changes, additions, and deletions to the bidding documents:

Aaron Wosek, Project Manager email address is aaron.wosek@spicergroup.com Please email all questions to this email address or call mobile at 231-645-5992.

Pre-bid Sign-In Sheet: See attached pre-bid conference sign-in sheet.

The following are changes / clarifications to the bidding documentation:

1. See attached C-410 BIDFORM. Please use this bid form for your bids.

2. Please include the procurement and installation of a solid surface window sill surround for each window installment. Remove all existing wood trim and install solid surface, 3/4” interior window sill. Base on Corian Solid Surface product, Class A fire rating. Include all necessary adhesives, caulk, for complete installation. Field measure length and width (base bid on 6” wide and length of associated window replacement w/ 2” full length return (down vertical wall). Subject to final measurement and shop drawing review.

3. Replace (2) broken half-tiles at door stops at entry to E118A cafeteria doors. Replacement tiles are available from Onekama Schools.

4. Re-anchor existing door stile at entry to E118C cafeteria doors.

5. Reuse solid filled existing hollow-metal door frames throughout.

6. Locker Room (2) Exterior doors E129A and E135A area:

a. Remove (2) sections of existing concrete sidewalk directly outdoors from doors, apply underslab insulation and reinstall replacement concrete. Base bid scope on (2) 10’x6’by 8” nominal concrete sidewalk area and curb.

b. Replace all existing door hardware as originally scheduled.

c. Aluminum door frames are not required to be replaced.

d. See attached 32 13 13 Concrete Paving Specification for typical sidewalk and curb specifications.

7. Doors F110A: Reuse existing sold filled framing, install new continuous hinge, and reinstall existing doors. Reuse all existing hardware and key cores.

8. Doors F104A, F104B:

a. Reuse solid filled framing.

b. Reuse existing door side hold-open hardware.

c. Replace doors and hardware as originally scheduled.

d. Replace (2) floor tiles and floor stops.

e. Coordinate installation final door-floor clearance with Engineer.

9. Doors F211A:

Addendum No. 1 January 24, 2024

a. Reuse existing solid-filled door frame.

b. Reuse existing keyed mullion.

c. Replace doors and hardware as originally scheduled.

d. Coordinate installation of final door-floor clearance with Engineer.

Prepared by:

Aaron Wosek, Project Manager Office: 231-645-5992 Aaron.wosek@spicergroup.com Spicer Group, Inc.

ACKNOWLEDGMENT

BIDDER: ____________________________________________________________

BY: ____________________________________________________________

DATE: ____________________________________________________________

BID FORM:

Item No.

Estimated Quantity Unit Description Unit Price Amount

1. Cubic Yard Pea gravel, installed. (complete per cubic yard cost) $ $

2. 1 Lump Sum Playground Equipment Refinishing $ Lump Sum $

$ Lump Sum $

4. 1 Lump Sum

Building Improvements (including doors, windows, floor resurfacing, complete, installed.) $ Lump Sum $

5. 1 Lump Sum

Building HVAC Improvements (Exhaust fan and louver screen replacement, complete, installed.) $ Lump Sum $

$ Lump Sum $

7. 1 Lump Sum Owner's Discretionary Allowance $ Lump Sum $ 15,000

$ Lump Sum $

8. TOTAL SITE AND BUILDING IMPROVEMENT BIDS INCLUDING

ALLOWANCES.

3. TOTAL SITE IMPROVEMENT BID

6. TOTAL BUILDING IMPROVEMENTS BID

Onekama Consolidated Schools 2024 Sinking Fund Project

Site Improvements

Building Improvements

2024 Sinking Fund Onekama Consolidated Schools C-410 - 6

2024 Sinking Fund Wood Doors Onekama Consolidated Schools 08 21 10 - 1

SECTION 08 21 10

WOOD DOORS

1. PART 1 GENERAL

1.1 RELATED DOCUMENTS

A. Drawings and general provisions of the Contract, including General and Supplementary Conditions and Division 1 Specification Sections, apply to this Section.

1.2 SUMMARY

A. This Section includes the following:

1. Replacement of solid-core doors with wood-veneer faces.

2. Hollow-core doors with wood-veneer faces.

3. Factory fitting flush wood doors to frames and factory machining for hardware.

B. Related Sections include the following:

1. Division 6 Section “Rough Carpentry” for hollow-core wood doors.

2. Division 8 Section “Metal Doors and Frames” for frames for solid-core wood doors.

3. Division 8 Section “Glazing” for glass view panels in flush solid-core wood doors.

1.3 QUALITY ASSURANCE

A. Source Limitations: Obtain wood doors through one source from a single manufacturer.

B. Quality Standard: Comply with the following standard:

1. AWI Quality Standard: AWI's "Architectural Woodwork Quality

Standards" for grade of door, core, construction, finish, and other requirements.

C. Fire-Rated Wood Doors: Doors complying with NFPA 80 that are listed and labeled by a testing and inspecting agency acceptable to authorities having jurisdiction, for fire ratings indicated, based on testing according to NFPA 252.

1.4 DELIVERY, STORAGE, AND HANDLING

A. Protect doors during transit, storage, and handling to prevent damage, soiling, and deterioration. Comply with requirements of referenced standard and manufacturer's written instructions.

1. Individually package doors in plastic bags or cardboard cartons.

B. Mark each door with individual opening numbers used on Shop Drawings. Use removable tags or concealed markings.

Onekama Consolidated Schools 08 21 10 - 2

1.5 PROJECT CONDITIONS

A. Environmental Limitations: Do not deliver or install doors until building is enclosed, wet-work is complete, and HVAC system is operating and will maintain temperature and relative humidity at occupancy levels during the remainder of the construction period.

1.6 WARRANTY

A. General Warranty: Door manufacturer's warranty specified in this Article shall not deprive the Owner of other rights the Owner may have under other provisions of the Contract Documents and shall be in addition to, and run concurrent with, other warranties made by the Contractor under requirements of the Contract Documents.

B. Door Manufacturer's Warranty: Submit written agreement on door manufacturer's standard form, signed by manufacturer, Installer, and Contractor, agreeing to repair or replace defective doors that have warped (bow, cup, or twist) more than 1/4 inch in a 42-by-84-inch section or that show telegraphing of core construction in face veneers exceeding 0.01 inch in a 3-inch span, or do not comply with tolerances in referenced quality standard.

1. Warranty shall also include installation and finishing that may be required due to repair or replacement of defective doors.

2. Warranty shall be in effect during the following period of time after the date of Final Completion: One year.

2. PART 2 PRODUCTS

2.1 MANUFACTURERS

A. Manufacturers: Subject to compliance with requirements, provide products by one of the following:

1. Wood Doors:

a. Masonite Company.

b. Trudoor.

c. VT Industries.

d. MMI Door.

e. Or Architect approved equal.

2.2 DOOR CONSTRUCTION, GENERAL

A. Doors - Solid Core: Comply with the following requirements:

1. Match existing door style, finish, and fire rating.

2. Reuse locksets where possible.

3. Reuse magnetic hold-opens where possible.

4. Replace all worn or damaged closers.

5. Do not reuse hinges (see request for new continuous hinges).

6. Grade: Premium, with Grade AA faces.

7. Faces: White Maple, plain sliced.

8. Match between Veneer Leaves: Book match.

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9. Pair and Set Match: Provide for pairs of doors and for doors hung in adjacent sets.

B. Doors - Hollow Core: Comply with the following requirements:

1. Panel: Flush.

2. Faces: Wood veneer faces.

3. Pair and Set Match: Provide for pairs of doors and for doors hung in adjacent sets.

2.3 SOLID-CORE DOORS

A. Particleboard Cores: Comply with the following requirements:

1. Particleboard: ANSI A208.1, Grade LD-2. (for wood veneer)

2. Blocking: Provide wood blocking at particleboard-core doors as follows:

a. 5-inch top-rail blocking, at doors indicated to have closers.

b. 5-inch bottom-rail blocking, at doors indicated to have kick, mop, or armor plates.

c. 5-inch midrail blocking, at doors indicated to have exit devices.

B. Interior Veneer-Faced Doors: Comply with the following requirements:

1. Core: Particleboard core.

2. Construction: Seven plies with stiles and rails bonded to core, then entire unit abrasive planed before veneering.

C. Fire-Rated Doors: Comply with the following requirements:

1. Field verify and match existing fire door ratings in each location.

2. Construction: Construction and core specified above for type of face indicated or manufacturer's standard mineral-core construction as required to provide fire rating indicated.

3. Blocking: For mineral-core doors, provide composite blocking with improved screw-holding capability approved for use in doors of fire ratings indicated and as follows:

a. 5-inch top-rail blocking.

b. 5-inch bottom-rail blocking, at doors indicated to have kick, mop, or armor plates.

c. 4-1/2-by-10-inch lock blocks.

d. 5-inch midrail blocking, at doors indicated to have exit devices.

e. As necessary to eliminate need for through-bolting hardware.

4. Edge Construction: At hinge stiles, provide manufacturer's standard laminated-edge construction with improved screw-holding capability and split resistance and with outer stile matching face veneer.

5. Pairs: Provide fire-rated pairs with fire-retardant stiles that are labeled and listed for kinds of applications indicated without formed-steel edges and astragals.

2.4 HOLLOW-CORE DOORS

A. Comply with the following requirements:

1. Fabricated using loose lay-up assembly.

2. Wood stiles and rails.

3. Corrugated cell core.

Onekama Consolidated Schools 08 21 10 - 4

4. Door facings are to be bonded to stiles, rails and core forming a 3-ply structural attachment.

5. Mounting surface for latching hardware to be reinforced with solid internal support.

B. Door Frames for Hollow-Core Doors:

1. Wood Species: Solid lumber, appearance grade pine.

2. Profile: Standard double rabbet.

3. Jamb Depth: 4-9/16 inch.

2.5 LIGHT FRAMES

A. Wood Frames for Light Openings: As follows:

1. Wood Species: Same species as door faces.

2. Profile: Flush rectangular beads.

B. Wood-Veneered Beads for Light Openings in Fire Doors: Manufacturer's standard wood-veneered noncombustible beads matching veneer species of door faces and approved for use in doors of fire rating indicated. Include concealed metal glazing clips where required for opening size and fire rating indicated.

2.6 FABRICATION

A. Fabricate flush wood doors in sizes indicated for Project site fitting.

B. Factory fit doors to suit frame-opening sizes indicated, with the following uniform clearances and bevels, unless otherwise indicated:

1. Comply with clearance requirements of referenced quality standard for fitting. Comply with requirements of NFPA 80 for fire-rated doors.

C. Factory machine doors for hardware that is not surface applied. Locate hardware to comply with DHI-WDHS-3. Comply with final hardware schedules, door frame Shop Drawings, DHI A115-W series standards, and hardware templates.

1. Coordinate measurements of hardware mortises in metal frames to verify dimensions and alignment before factory machining.

D. Openings: Cut and trim openings through doors to comply with applicable requirements of referenced standards for kind(s) of door(s) required.

1. Light Openings: Trim openings with moldings of material and profile indicated.

E. Exterior Doors: Factory treat exterior doors with water repellent after manufacturing has been completed.

1. Flash top of outswinging doors (with manufacturer's standard metal flashing).

3. PART 3 EXECUTION

3.1 EXAMINATION

Onekama Consolidated Schools 08 21 10 - 5

A. Examine installed door frames before hanging doors.

1. Verify that frames comply with indicated requirements for type, size, location, and swing characteristics and have been installed with plumb jambs and level heads.

2. Reject doors with defects.

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

3.2 INSTALLATION

A. Hardware: Install per manufacturer’s written instructions. Reuse hardware as noted.

B. Manufacturer's Written Instructions: Install wood doors to comply with manufacturer's written instructions, referenced quality standard, and as indicated.

1. Install fire-rated doors in corresponding fire-rated frames according to

NFPA 80.

C. Job-Fit Doors: Align and fit doors in frames with uniform clearances and bevels as indicated below; do not trim stiles and rails in excess of limits set by manufacturer or permitted with fire-rated doors. Machine doors for hardware.

Seal cut surfaces after fitting and machining.

1. Clearances: Provide 1/8 inch at heads, jambs, and between pairs of doors. Provide 1/8 inch from bottom of door to top of decorative floor finish or covering. Where threshold is shown or scheduled, provide 1/4 inch from bottom of door to top of threshold.

a. Comply with NFPA 80 for fire-rated doors.

2. Bevel non-fire-rated doors 1/8 inch in 2 inches (3-1/2 degrees) on lock edges; trim stiles and rails only to extent permitted by labeling agency.

D. Factory-Fitted Doors: Align in frames for uniform clearance at each edge.

3.3 ADJUSTING AND PROTECTING

A. Operation: Rehang or replace doors that do not swing or operate freely.

B. Finished Doors: Refinish or replace doors damaged during installation.

C. Protect doors as recommended by door manufacturer to ensure that wood doors are without damage or deterioration at the time of Substantial Completion.

END OF SECTION

2024 Sinking Fund Concrete Paving Onekama Consolidated Schools 32 13 13 - 1

SECTION 32 13 13

CONCRETE PAVING

PART 1 - GENERAL

1.1 SUMMARY

A. Section Includes:

1. Concrete paving for:

a. Concrete sidewalks.

b. Concrete curbs and gutters.

c. Concrete parking areas and roads.

B. Related Requirements:

1. Section 31 22 13 - Rough Grading: Preparation of site for paving and base.

2. Section 32 11 23 - Aggregate Base Courses.

3. Section 32 91 19 - Landscape Grading: Preparation of subsoil at pavement perimeter.

4. Section 33 05 13 - Manholes and Structures: Manholes including frames.

1.2 REFERENCE STANDARDS

A. American Association of State Highway and Transportation Officials:

1. AASHTO M324 - Standard Specification for Joint and Crack Sealants, Hot Applied, for

Concrete and Asphalt Pavements.

B. American Concrete Institute:

1. ACI 301 - Specifications for Structural Concrete.

2. ACI 304 - Guide for Measuring, Mixing, Transporting, and Placing Concrete.

C. ASTM International:

1. ASTM A184/A184M - Standard Specification for Fabricated Deformed Steel Bar Mats for

Concrete Reinforcement.

2. ASTM A185/A185M - Standard Specification for Steel Welded Wire Fabric, Plain, for

Concrete Reinforcement.

3. ASTM A497/A497M - Standard Specification for Steel Welded Wire Fabric, Deformed, for

Concrete Reinforcement.

4. ASTM A615/A615M - Standard Specification for Deformed and Plain Billet-Steel Bars for

Concrete Reinforcement.

5. ASTM A706/A706M - Standard Specification for Low-Alloy Steel Deformed and Plain Bars for Concrete Reinforcement.

6. ASTM A767/A767M - Standard Specification for Zinc-Coated (Galvanized) Steel Bars for

Concrete Reinforcement.

7. ASTM A775/A775M - S Standard Specification for Epoxy-Coated Steel Reinforcing Bars.

8. ASTM A884/A884M - Standard Specification for Epoxy-Coated Steel Wire and Welded

Wire Reinforcement.

9. ASTM A934/A934M - Standard Specification for Epoxy-Coated Prefabricated Steel

Reinforcing Bars.

10. ASTM C31/C31M - Standard Practice for Making and Curing Concrete Test Specimens in the Field.

11. ASTM C33 - Standard Specification for Concrete Aggregates.

Onekama Consolidated Schools 32 13 13 - 2

12. ASTM C39/C39M - Standard Test Method for Compressive Strength of Cylindrical Concrete Specimens.

13. ASTM C94/C94M - Standard Specification for Ready-Mixed Concrete.

14. ASTM C143/C143M - Standard Test Method for Slump of Hydraulic Cement Concrete.

15. ASTM C150 - Standard Specification for Portland Cement.

16. ASTM C172 - Standard Practice for Sampling Freshly Mixed Concrete.

17. ASTM C173/C173M - Standard Test Method for Air Content of Freshly Mixed Concrete by the Volumetric Method.

18. ASTM C231 - Standard Test Method for Air Content of Freshly Mixed Concrete by the

Pressure Method.

19. ASTM C260 - Standard Specification for Air-Entraining Admixtures for Concrete.

20. ASTM C309 - Standard Specification for Liquid Membrane-Forming Compounds for

Curing Concrete.

21. ASTM C494/C494M - Standard Specification for Chemical Admixtures for Concrete.

22. ASTM C595 - Standard Specification for Blended Hydraulic Cements.

23. ASTM C618 - Standard Specification for Coal Fly Ash and Raw or Calcined Natural

Pozzolan for Use as a Mineral Admixture in Concrete.

24. ASTM C979 - Standard Specification for Pigments for Integrally Colored Concrete.

25. ASTM C989 - Standard Specification for Ground Granulated Blast-Furnace Slag for Use in

Concrete and Mortars.

26. ASTM C1017/C1017M - Standard Specification for Chemical Admixtures for Use in

Producing Flowing Concrete.

27. ASTM C1064/C1064M - Standard Test Method for Temperature of Freshly Mixed

Hydraulic-Cement Concrete.

28. ASTM C1116 - Standard Specification for Fiber-Reinforced Concrete and Shotcrete.

29. ASTM C1315 - Standard Specification for Liquid Membrane-Forming Compounds Having

Special Properties for Curing and Sealing Concrete.

30. ASTM C1371 - Standard Test Method for Determination of Emittance of Materials Near

Room Temperature Using Portable Emissometers.

31. ASTM C1549 - Standard Test Method for Determination of Solar Reflectance Near Ambient

Temperature Using a Portable Solar Reflectometer.

32. ASTM D1751 - Standard Specification for Preformed Expansion Joint Filler for Concrete

Paving and Structural Construction (Nonextruding and Resilient Bituminous Types).

33. ASTM D1752 - Standard Specification for Preformed Sponge Rubber and Cork Expansion

Joint Fillers for Concrete Paving and Structural Construction.

34. ASTM D6690 - Standard Specification for Joint and Crack Sealants, Hot Applied, for

Concrete and Asphalt Pavements.

35. ASTM E408 - Standard Test Methods for Total Normal Emittance of Surfaces Using

Inspection-Meter Techniques.

36. ASTM E903 - Standard Test Method for Solar Absorptance, Reflectance, and Transmittance of Materials Using Integrating Spheres.

37. ASTM E1918 - Standard Test Method for Measuring Solar Reflectance of Horizontal and

Low-Sloped Surfaces in the Field.

38. ASTM E1980 - Standard Practice for Calculating Solar Reflectance Index of Horizontal and

Low-Sloped Opaque Surfaces.

1.3 SUBMITTALS

A. Section 01 33 00 - Submittal Procedures: Requirements for submittals.

B. Product Data:

1. Submit data on concrete materials, joint filler and admixtures curing compounds.

Onekama Consolidated Schools 32 13 13 - 3

C. Design Data:

1. Submit concrete mix design for each concrete strength. Submit separate mix designs when admixtures are required for the following:

a. Hot and cold weather concrete work.

2. Identify mix ingredients and proportions, including admixtures.

3. Identify chloride content of admixtures and whether or not chloride was added during manufacture.

D. Source Quality Control Submittals: Indicate results of shop tests and inspections.

1.4 QUALITY ASSURANCE

A. Perform Work in accordance with ACI 301.

B. Obtain cementitious materials from same source throughout.

C. Perform Work in accordance with MDOT Standard Specifications for Construction.

D. Maintain one copy of each document on site.

1.5 QUALIFICATIONS

A. Manufacturer: Company specializing in manufacturing Products specified in this section with minimum three years documented experience.

B. Installer: Company specializing in performing work of this section with minimum 3 years documented experience.

1.6 AMBIENT CONDITIONS

A. Section 01 50 00 - Temporary Facilities and Controls: Ambient conditions control facilities for product storage and installation.

B. Do not place concrete when base surface temperature is less than 40 degrees F, or surface is wet or frozen.

PART 2 - PRODUCTS

2.1 AGGREGATE BASE COURSE

A. Aggregate Base Course: As specified in Section 32 11 23.

2.2 CONCRETE PAVING

A. Performance / Design Criteria:

1. In accordance with Municipal, State, and Federal standards.

B. Form Materials:

1. Form Materials: As specified in Section 03 10 00.

2. Wood or Steel form material, profiled to suit conditions.

3. Joint Filler: ASTM D1751; Asphalt impregnated fiberboard or felt, 1/2 inch thick.

Onekama Consolidated Schools 32 13 13 - 4

4. ANSI/ASTM D1751, performed type; 1/2 inch thick, full depth of concrete manufactured by ACD International, W.R. Meadows or equal.

C. Reinforcement:

1. Reinforcing Steel and Wire Fabric: Conform to Municipal, State and Federal Standards. All reinforcement steel shall be epoxy coated.

D. Concrete Materials:

1. Concrete Materials: As specified in Section 03 30 00.

2.3 MIXES

A. Concrete Mix - By Performance Criteria:

1. Mix concrete in accordance with ACI 304. Deliver concrete in accordance with ASTM

C94/C94M.

2. Select proportions for normal weight concrete in accordance with ACI 301 Method 2.

3. Provide concrete to the following criteria:

a. As specified in 03 30 00 Concrete Cast in Place.

4. Limit the following cementitious materials to maximum percentage by mass of all cementitious materials:

a. As specified in 03 30 00.

5. Use accelerating admixtures in cold weather only when approved by the Architect/Engineer in writing. Use of admixtures will not relax cold weather placement requirements.

6. Use set retarding admixtures during hot weather only when approved by the Engineer in writing.

2.4 FINISHES

A. Shop Finishing - Reinforcement:

1. Galvanized Finish for Steel Bars: ASTM A767/A767M, Class I, hot dip galvanized after fabrication.

2. Epoxy Coated Finish for Steel Bars: ASTM A775/A775M.

B. Epoxy Coated Finish for Steel Wire: ASTM A884/A884M; Class A, using ASTM A775/A775M.

2.5 ACCESSORIES

A. Curing Compound: ASTM C309, Type 1, FS TT-C-800, 30 percent solids manufactured by ACD International or equal.

B. Liquid Surface Sealer: Son-No-Mar manufactured by Sonneborn Building Products or equal.

C. Joint Sealers: Type II or Type III; hot applied type.

D. 2” 25 psi expanded polystyrene. Dow Blue Board or equal.

2.6 SOURCE QUALITY CONTROL

A. Section 01 40 00 - Quality Requirements: Testing and Inspection Services.

B. Submit proposed mix design of each class of concrete to appointed firm for review prior to commencement of work. Tests on cement, aggregates, and mixes will be performed to ensure conformance with specified requirements.

Onekama Consolidated Schools 32 13 13 - 5

C. Test samples in accordance with ACI 301.

D. Provide certification that materials conform with specified requirements.

2.7 DETECTABLE WARNING SURFACES

A. Manufacturers: From the MDOT Material Source Guide Qualified Product list.

PART 3 - EXECUTION

3.1 EXAMINATION

A. Section 01 70 00 - Execution and Closeout Requirements: Requirements for installation examination.

B. Verify compacted subgrade and granular subbase is dry and ready to support paving and imposed loads.

1. Remove soft subbase and replace with compacted fill as specified in Section 32 11 23.

C. Verify gradients and elevations of base are correct.

3.2 PREPARATION

A. Section 01 70 00 - Execution and Closeout Requirements: Requirements for installation preparation.

B. Moisten substrate to minimize absorption of water from fresh concrete.

C. Coat surfaces of manhole and catch basin frames with oil to prevent bond with concrete paving.

D. Verify correct line and grade of base.

E. Firmly stake forms to the required line and grade and provide for a finish transverse slope of 1/4 inch per foot towards the center of the road.

F. Notify Engineer minimum 48 hours prior to commencement of concreting operations.

G. Form sub-grade by excavating or filling with approved granular material, Type G or H as directed by Engineer to the required line and grade for bottom of concrete.

H. Remove unstable material from sub-grade and replace with approved granular material, Type G or H as directed by Engineer.

I. Compact sub-grade to insure stability.

3.3 INSTALLATION

A. Subbase:

1. Aggregate Subbase: Install as specified in Section 32 11 23.

2. 2” XPS blue board under replaced sidewalk sections.

B. Forms:

http://www.specagent.com/LookUp/?ulid=8732&mf=04&src=wd

Onekama Consolidated Schools 32 13 13 - 6

1. Place and secure forms and screeds to correct location, dimension, profile, and gradient.

2. Assemble formwork to permit easy stripping and dismantling without damaging concrete.

C. Removal:

1. Provide curb cut by saw-cutting and removing the full curb section and gutter pan at locations where the proposed sidewalk adjoins existing curb and gutter at roadways and drives.

2. Remove concrete curb full depth as shown on the drawings.

3. Remove rubble, place compacted granular fill to correct line and grade.

4. Leave existing reinforcement to extend 6 inches into proposed gutter pan.

D. Reinforcement:

1. Place two #4 bars the entire length of the proposed gutter pan, lapped and tied to the existing reinforcement.

2. Dowel proposed #4 bars 12 inches into existing gutter pan where existing bars were cut off or are absent.

3. Place reinforcing at mid-height of paving.

4. Interrupt reinforcing at contraction expansion joints.

5. Place dowels to achieve paving and curb alignment as detailed.

6. Provide doweled joints as specified in MDOT Standard Specifications for Construction.

7. Repair damaged galvanizing or epoxy coating to match shop finish.

E. Placing Concrete:

1. Place concrete using the slip form technique.

2. Ensure reinforcing, inserts, embedded parts, and formed joints are not disturbed during concrete placement.

3. Place concrete continuously over the full width of the panel and between predetermined construction joints. Do not break or interrupt successive pours such that cold joints occur.

4. Thickness:

a. Sidewalks: 4 inches normal and 6 inches at driveways, ramps, and parking areas.

b. Curb cut and Gutter: Match existing.

5. Width:

a. Sidewalks: Match existing (minimum of 4’).

b. Cut curb and Gutter: As shown on the drawings.

6. Place concrete in accordance with the MDOT current Standards for Construction.

F. Joints

1. Place joint filler between paving components and building or other appurtenances.

2. Place expansion joints between abutting buildings, sidewalk approaches, back of curb or gutter, or edge of pavement with the top flush with the finished surface of the sidewalk.

3. Contraction Joints: Divide sidewalk into square unit areas of not more than 36 square feet nor less than 16 square feet.

4. Construct joint groove in expansion joints according to MDOT Standard Plans for joint construction.

5. Flush loose concrete and slurry from the groove and the immediate area.

6. If the required seal is not installed within seven days of final sawing, temporarily seal the joint groove with approved material or device to prevent the infiltration of foreign material.

7. Install either permanent seal or temporary seal before allowing vehicles to travel over the full width joint grooves.

8. Saw joints in two stages, in accordance with the following:

a. Place relief cut directly over the center of the load transfer assembly or over the preformed joint filler. Make the relief cut after the concrete hardens and will not

Onekama Consolidated Schools 32 13 13 - 7 excessively ravel or spall, but before random cracks develop in the concrete pavement.

Immediately stop sawing if sawing operation causes excessive raveling or spalling, and continue to monitor the concrete hardness before resuming sawing operations. Do not allow traffic cover the expansion join relief cuts.

b. Center the joint groove over the relief cut. Adjust the groove width to compensate for change in the relief cut due to pavement contraction. Immediately stop sawing if sawing operation causes excessive raveling or spalling, and continue to monitor the concrete hardness before resuming sawing operations. Maintain the curing of the concrete near the joint, and if required, install the permanent joint sealant or place temporary cover material. Give second stage sawing of expansion joints priority over second stage contraction joint sawing, if higher pavement temperatures are forecast.

9. If proposing an alternative method for sawing, submit a plan to the Engineer for approval.

10. The Engineer will not allow spalling, raveling, and random cracks in the concrete pavement.

Repair raveling or spalling in accordance with MDOT Standard Specifications for Construction. Remove and replace random cracked panels as directed by the Engineer.

11. Locations of transverse joints in the pavement, shoulder, curb and gutter, valley gutter and base course shall be in accordance with MDOT Standard Plans.

12. Place load transfer assemblies if required by MDOT Standard Plans.

13. Place expansion joint filler in accordance with MDOT Standard Plans.

G. Finishing:

1. After concrete has been struck off to finish grade, float surface with a steel float to produce a smooth surface.

2. Area Paving: Light broom.

3. Sidewalk Paving: Light broom.

4. Median Barrier: Light broom.

5. Curbs and Gutters: Light broom.

6. Direction of Texturing: Lightly broom transversely across the surface to create a slightly rough surface. Round edges and joint to a radius of 1/4 inch with an approved finishing tool.

7. Place curing compound on exposed concrete surfaces immediately after finishing. Apply in accordance with manufacturer’s instructions.

H. Curing and Protection

1. Immediately after placement, protect concrete from premature drying, excessively hot or cold temperatures, and mechanical injury.

2. Maintain concrete with minimal moisture loss at relatively constant temperature for period necessary for hydration of cement and hardening of concrete.

3. During cold weather, protect concrete from freezing for a period of 3 days.

4. Protect concrete from traffic for a minimum of 7 days.

I. Finish Grading

1. Place surplus excavation in outlawn and level to existing contours.

2. Remove excess excavation unable to be used in outlawn.

3. Spread 4 inches minimum topsoil over entire disturbed area.

4. Furnish and install embankment in accordance with MDOT Standard Specifications for

Construction, Section 2.08.11.

J. Detectable Warning Surface

1. Install in accordance with Manufacturer’s specifications and MDOT Standard Plan R-28

Series.

Onekama Consolidated Schools 32 13 13 - 8

3.4 TOLERANCES

A. Section 01 40 00 - Quality Requirements: Tolerances.

B. Maximum Variation of Surface Flatness: 1/4 inch in 10 ft.

C. Maximum Variation From True Position: 1/4 inch.

3.5 FIELD QUALITY CONTROL

A. Section 01 40 00 - Quality Requirements: Requirements for inspecting, testing.

B. Engineer will take cylinders and perform slump and air entrainment tests in accordance with ACI

301. The frequency the tests are taken, shall be at the Engineer’s discretion.

C. Strength Test Samples:

1. Sampling Procedures: ASTM C172.

2. Cylinder Molding and Curing Procedures: ASTM C31/C31M, cylinder specimens, standard cured.

3. Sample concrete and make one set of four cylinders for every 75 cu yds. or less of each class of concrete placed each day.

4. Make one additional cylinder during cold weather concreting, and field cure.

D. Field Testing:

1. Slump Test Method: ASTM C143/C143M.

2. Air Content Test Method: ASTM C173/C173M.

3. Temperature Test Method: ASTM C1064/C1064M.

4. Measure slump and temperature for each compressive strength concrete sample.

5. Measure air content in air entrained concrete for each compressive strength concrete sample.

E. Cylinder Compressive Strength Testing:

1. Test Method: ASTM C39/C39M.

2. Test Acceptance: In accordance with MDOT Standards.

3. Test one cylinder at 7 days.

4. Test three cylinders at 28 days.

5. Dispose remaining cylinders when testing is not required.

F. Maintain records of placed concrete items. Record date, location of pour, quantity, air temperature, and test samples taken.

3.6 PROTECTION

A. Section 01 70 00 - Execution and Closeout Requirements: Requirements for protecting finished Work.

B. Immediately after placement, protect paving from premature drying, excessive hot or cold temperatures, and mechanical injury.

C. Do not permit pedestrian vehicular traffic over paving for 7 days minimum after finishing.

END OF SECTION