751.24168.ABG_HistoricMillCreek_Addendum1_Issued_250109.pdf

ADDENDUM NO. 1

DATE: January 09, 2025

PROJECT: Historic Mill Creek Visitor Center

DTMB FILE NO.: 751/24168.ABG

OWNER: MI DTMB/ Mackinaw Island State Park

BID DATE: Wednesday, January 15, 2025 ** THIS ADDENDUM DOES NOT CHANGE

THE BID DATE

The following shall be incorporated into the Contract Documents dated 06 DECEMBER 2024.

GENERAL

The pre-bid meeting attendance sheet is attached.

Question: We need approval, before bid date, to perform work on the site from 12/01/2025 – 4/1/2026.

Answer: Note requiring approval is removed. See Drawing Sheet C-110 issued with this addendum.

Question: Will DTMB allow awarded contractor to provide builders risk insurance prior to construction start, or will they require the insurance prior to contract signing?

Answer: Builder’s Risk is requested prior to the contract signing.

Question: Is there any space/location in the area that is state property where storage containers can be placed to store products/materials prior to construction starting?

Answer: Yes, there would be space located at the project site for up to two shipping storage containers.

Question: Has hazardous materials survey been performed? If remediation is required, will these costs come out of contingency?

Answer: A hazardous materials survey can be provided to the awarded contractor.

Question: Sheet A-801 calls for SR-1 flooring in Room 108 Auditorium. Are there any details available for the flooring transitions at the steps?

Answer: See Revised Drawing Sheet A-801 issued with this addendum for transition details at the steps.

Question: Spec section 096516 calls out “unbacked rubber sheet flooring”. Is this the SR-1 type flooring? I don’t see a type of flooring for SR-1 called out on the plans or the specifications. If so, is there a specific type of flooring from Nora by Interface that we should be quoting?

Answer: Refer to the 01 05 00 Design Selections spec section for specific products to be used.

The technical spec sections following indicate performance, testing, shop, installation requirements etc.

Question: Spec section 096513 lists Vinyl Base. I do not see a manufacturer or type listed in the spec. Is there a manufacturer and type of vinyl base available?

Answer: Refer to the 01 05 00 Design Selections spec section for specific products to be used.

The technical spec sections following indicate performance, testing, shop, installation requirements etc.

Question: Sheet A-802 calls out porcelain tile types PT-1 and PT-2. Spec section 093013 lists porcelain tile type CT-1. Can you please clarify what porcelain tile types PT-1 and PT-2 are?

Answer: Refer to the 01 05 00 Design Selections spec section for specific products to be used.

The technical spec sections following indicate performance, testing, shop, installation requirements etc.

Question: Detail 5/A451 calls the railing in the Auditorium out as steel. Detail 15/A-601 calls the railing out as aluminum. Can you please clarify which is required?

Answer: See Revised Drawing Sheets A-451 & A-601 issued with this addendum for revised handrail material (stainless steel).

Question: “What the start date or number of calendar days to complete the work?”

Answer: In Appendix I SPECIAL WORKING CONDITIONS, line 7 states “Construction may approximately start right after Labor Day.

Question: Rooms 151, 152 and 153 all call for wall tile. Can elevations be provided to show heights and details for the wall tile?

Answer: Interior elevations are on sheet A-453.

Question: Auditorium 108 shows existing steps for the seating. Is it known if these are wood framed steps or concrete steps?

Answer: Steps in the auditorium are concrete.

PROJECT MANUAL

SECTION 033543 – POLISHED CEMENTITIOUS OVERLAY

1. Delete existing section “03 35 43 – Polished Concrete Finishing” in its entirety and replace with revised section “03 35 43 – Polished Cementitious Overlay.”

New specification includes the following changes: specifies system for use where polished self-leveling floor overlayment is indicated on drawings.

SECTION 072500 – WEATHER BARRIERS

1. Delete requirements for “Building Wrap” and replace with requirements for “Drainage Wrap.”

SECTION 074113.16 – STANDING-SEAM METAL ROOF PANELS

1. Add the following acceptable manufacturers under 2.1 A:

5. Metal Panel Systems

6. DMI; Dimensional Metals Inc.

DRAWINGS

C-110 CIVIL NOTES

1. Remove DTMB: GENERAL NOTE 2 “No work onsite from December 1st to April 1st without prior department approval.” It is expected that construction does occur from award of contract through the substantial completion date which will include working December 1st through April 1st.

A-451

1. Revise Detail 5 to show stainless steel handrail and delete reference to painted handrail.

A-601

1. Add Detail 16 to show flashing at existing window sills at restroom building.

2. Revise Detail 15 to show stainless steel handrail.

3. Revise Details 5, 7, 10, & 14 to show weather barrier and flashing interface.

A-801

1. Add floor transition details at steps.

End of Addendum No. 1

DTMB/Mackinaw Island State Park Historic Mill Creek Visitor Center DTMB File #: 751/24168.ABG OHM File #: 7136-24-0050

POLISHED CEMENTITIOUS OVERLAY

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Addendum 1: 01/09/2025

SECTION 033543 – POLISHED CEMENTITIOUS OVERLAY

PART 1 - GENERAL

1.1 SUMMARY

A. This section covers the following operations to be performed.

1. Surface preparation and cleaning

2. Application of Polymer Modified Polishable Cementitious Overlay (PMPCO)

3. Application of Liquid Densifier

4. Polishing and grinding steps up to 1500 grit resin bonded tooling providing finish with specular gloss value of not less than 60 per ASTM E 430 when measured using a Horiba IG-320 Gloss Checker in accordance with ASTM D 523, at 10 feet on center across the entire polished floor surface

5. Application of Protective Sealer

B. The following specifications are provided as a guide to the minimum actions required to provide a grind and polished PMPCO. It is the contractor/installers’ ultimate responsibility to provide a polished/ground floor meeting the specified criteria and that matches the approved mock up.

1.2 SUBMITTALS

A. Product Data: Submit manufacturer’s product data including surface preparation and installation instructions for each type of product indicated.

B. Floor Polishing Equipment Data: Including unit’s head down pressure, minimum grinding width, max RPM, and verification of adjustable grinding pressure.

C. Diamond Tooling Data: Indicating that only matched sets will be used throughout entire process.

D. Approved applicator certificate for applicator of liquid densifier/sealer and polishing process.

E. Polishing Installers Project References: Provide list of successfully completed polishing projects meeting specified criteria. Include the following information for each project reference;

1. Project Name

2. Project Location

3. Type and Quantity of Grind and Polished Concrete Provided

4. Project Architect and Contact Info

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Addendum 1: 01/09/2025

1.3 QUALITY ASSURANCE

A. Manufacturer Qualifications: All Bonding Agents, Polymer Modified Cementitious Overlay and Liquid Floor Treatments are to be manufactured by a single manufacturer.

1. Manufacturer of all system components is to be ISO-9000 certified.

B. Grind and Polishing Contractor Qualifications:

1. All Grinding and Polishing operations and applications are to be performed by an approved applicator of Liquid Densifier Sealer manufacturer. General Contractor is to solicit and accept pricing only from those Applicators included in Manufacturer’s list of approved applicators. In addition to Manufacturer Approval, successful completion of at least [3] projects of similar size and scope within the past five years is to be required of each potential bidder. Experienced mechanics from previous applications including lead mechanic, are to be on site at all times while work is being performed.

C. Polymer Modified Polishable Cementitious Overlay (PMPCO) Mock-Up:

1. Prior to the Pre-Polish Conference, the polishing subcontractor is to provide a 10’-0” x 10’-0” mock up in designated mock-up area. Area is to have lighting similar in illumination, lumen output, color temperature, and both height and distance from surface as that of final areas to receive specified polished surfaces. Use the same personnel, equipment, tools and methods as will be used for the remaining interior floor slab. Mockup is to demonstrate each color, pattern, all joint treatments, inside wall edge treatments, and any protective sealers.

a. Notify Architect seven days in advance of dates and times when mockups will be completed.

b. Do not begin full scale product applications, floor polishing operations, or deliver major materials until Architect has reviewed and accepted the mockup panels.

c. Once accepted by owner’s representative, store mock-up on site as directed, and protect from damage.

D. Pre-Floor Polish Conference: Prior to the start of the overlay application and floor polishing process the General Contractor is to conduct a meeting to inspect the specified mock-up and determine approval. The specified process, including required methods and procedures to achieve the specified polished floor finish are to be reviewed. The General Contractor is to send a Pre-Polish Conference agenda to all attendees 20 days prior to scheduled date of the conference. Contractor is to require responsible representatives of every party concerned with PMPCO work to participate in the conference, including but not limited to the following:

1. Contractor’s Superintendent.

2. PMPCO Manufacturer

3. Bonding Agent Manufacturer

3. Liquid Densifier Sealer Manufacturer

4. Polishing Contractor

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Addendum 1: 01/09/2025

5. Owner’s Representative

6. Minutes of the meeting shall be recorded, typed, and distributed by the contractor to all concerned parties, including but not limited to the Owner’s representative and the architect within five days of the meeting.

PART 2 - PRODUCT

2.1 POLYMER MODIFIED POLISHABLE CEMENTITIOUS OVERLAY (PMPCO)

A. PMPCO: Provide prepackaged, cement based, single component, self-leveling cementitious topping designed for interior application and containing aggregate suspension technology that keeps the graded natural aggregate suspended at the surface where it can be ground and exposed to resemble a polished concrete floor after grinding and polishing. Material is to be micro fiber enhanced with advanced cement technology to allow polishing and/or coating in 24 hours.

1. Minimum Compressive Strength per ASTM C109:

a. 4,800 psi (33 MPa) at 24 hours

b. 7,000 psi (48 MPa) at 28 days

2. Basis of Design Product: LEVEL TOP PC AGG by Euclid Chemical (www.euclidchemical.com)

B. Epoxy Bonding Agent: 100 percent solids epoxy as recommended by PMPCO manufacture.

1. Basis of Design Product: EUCOFLOOR EPOXY PRIMER by Euclid Chemical;

(www.euclidchemical.com)

C. Silica Sand for Broadcast Into Epoxy Bonding Agent: Factory packaged in moisture proof bag, clean, dry, non-reactive silica sand, 16 mesh gradation. Contractor is to provide engineer with a letter of approval issued by sand supplier stating that proposed silica sand is non-reactive (ASR) with cement based products.

2.2 LIQUID FLOOR SLAB TREATMENTS

A. All liquid floor treatments are to be manufactured by same manufacturer as PMPCO and are to be fully compatible as specified herein.

B. Liquid Densifier Sealer: High performance, deeply penetrating concrete densifier;

odorless, colorless, VOC - compliant, non-yellowing silicate and siliconate based solution designed to harden, dustproof and protect concrete floors and to resist black rubber tire marks.

1. Basis of Design Product: ULTRASIL LI+ by Euclid Chemical (www.euclidchemical.com)

C. Protective Sealer: Provide water based, penetrating sealer designed to protect polished cementitious surfaces against stain and dirt intrusion.

a. Basis of Design Product: ULTRAGUARD by Euclid Chemical (www.euclidchemical.com)

2.3 ACCESSORIES

http://www.euclidchemical.com) http://www.euclidchemical.com) http://www.euclidchemical.com) http://www.euclidchemical.com/

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Addendum 1: 01/09/2025

A. Crack Repair Epoxy: Two component, 100 percent solids, moisture insensitive, ASTM C881 compliant, high modulus epoxy resin.

1. Basis of Design Product: DURAL 452 LV by Euclid Chemical www.euclidchemical.com

2.4 GRINDING AND POLISHING EQUIPMENT

A. Grinding and Polishing Machine: Diamond grinding machinery is to be specifically designed to grind, and polish concrete floors. Machinery is to provide minimum grinding pressure of 218 lbs (98 Kg), minimum grinding width of 20 inches (508 mm), and is to be equipped with adjustable grinding pressure to ensure even grinding.

1. Basis of Design Equipment:

a. “PDG 5000” by the SASE Company, www.Sasecompany.com John Abrahamson (800)522-2606; johna@sasecompany.com

b. Or architect approved equivalent.

B. Diamond Tooling: Diamond tooling for grinding and polishing concrete is to be resin and/or metal bonded diamond tooling originating from a single manufacturer and capable of providing specified polished concrete finish.

1. Basis of Design:

a. SASE Company, Inc: Contact: John Abrahamson (800)522-2606;

johna@SASEcompany.com , www.SASECompany.com

b. Or architect approved equal.

C. High Speed Propane Burnisher: For the final buffing operation using 800 grit and 1500 grit burnishing pads.

PART 3 - EXECUTION

3.1 SURFACE PREPARATION

A. New concrete must be a minimum 28 days old prior to commencement of operations.

B. Mechanically abrade the surface by shot-blast to achieve a surface profile equal to CSP 3-5 in accordance with ICRI Guideline 310.2

C. Concrete surfaces must be structurally sound and free of loose or deteriorated concrete and free of dust, dirt, paint, efflorescence, oil and other contaminants.

D. Perimeter Keyway: Cementitious Overlay is to be keyed into base slab at perimeter and all terminations by saw cutting a ¼ inch (6 mm) deep key way into the base slab.

E. Cracks and Joints:

http://www.euclidchemical.com/

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Addendum 1: 01/09/2025

1. Prepare, treat, rout, and fill all non-moving cracks over 1/16 inch (1.5 mm) in width, with specified Crack Repair Epoxy, according to manufacturer’s written recommendations.

2. All joints, and control joints are to be brought up through the over-lay and sealed with the specified polyurethane sealant approved by PMPCO manufacturer.

3. Comply with recommendations in ASTM C 1193 for joint-sealant installation.

3.2 EPOXY BONDING AGENT APPLICATION

A. Condition the Epoxy Bonding Agent to proper temperature in accordance with manufacturer’s recommendations prior to mixing. Mix and place epoxy primer to the prepared floor slab in accordance with manufacturer’s written instructions at a coverage rate of 75 to 100 Sq.ft. per gallon (1.8 to 2.5 m2 per liter).

B. Evenly broadcast approved specified Silica Sand to refusal into wet Epoxy Bonding Agent. Continue broadcast until epoxy refuses to wet out aggregate. Entire surface is to be covered with dry loose excess aggregate.

C. Allow epoxy to cure per manufacturer’s published recommendations. Following cure of Epoxy Bonding Agent remove all loose aggregate from floor surface.

3.3 POLYMER MODIFIED POLISHABLE CEMENTITIOUS OVERLAY APPLICATION (PMPCO)

A. Mix PMPCO per manufacturer’s published recommendations.

B. Pour mixed PMPCO onto the surface and spread with gauge rake to minimum 3/8 inch (10 mm) thickness. Smooth with Magic Trowel as needed.

3.4 LIQUID FLOOR TREATMENT APPLICATION

A. Liquid Densifier Sealer Treatment: Once PMPCO has been ground to 150 grit metal bonded diamond tooling level or equivalent, apply and finish penetrating Liquid Densifier Sealer floor treatment according to manufacturer's written instructions.

1. Thoroughly clean surface to remove any slurry, dust, or other surface debris.

2. Apply Liquid Densifier Sealer in strict accordance with the directions of the manufacturer. Spray, squeegee or roll liquid on to clean surface at rate that results in uniformly wet surface without puddles. Keep floor wet with Liquid Densifier for 5 to 10 minutes. While densifier is still wet use a soft bristle broom or microfiber pad to redistribute the Liquid Densifier. Do not continue to brush or spread once product begins to dry. Remove all excess. Do not allow Liquid Densifier to puddle and dry on floor.

3. Complete polishing and grinding steps and allow Liquid Densifier Sealer 12 hours of drying time before proceeding to application of Protective Sealer.

B. Protective Sealer Application: Once PMPCO has been polished to final polishing level and allowed minimum 12 hours dry time, dilute protective sealer at a 1 to 1 ratio with water and apply at manufacturer’s recommended coverage rate.

3.5 PMPCO POLISHING AND GRINDING PROCESS

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Addendum 1: 01/09/2025

A. Commence polishing and grinding process minimum 24 hours after placement of

PMPCO.

B. Polishing/Grinding Steps: The process described herein constitutes 1 complete Polishing/Grinding Step:

1. Mount diamond tooling of appropriate grit and bond to all grinding heads on Polishing Machine so as to assure that machinery is operating at full and balanced grinding capacity.

2. Polish/Grind floor at a rate to allow for an even scratch pattern.

3. Each polishing/grinding pass must overlap 50 percent of previous polishing/grinding pass.

4. All polishing/grinding passes are to be made in the same direction, either longitudinal, or latitudinal, until the entire given area to be polished/ground has been covered.

C. Basis of Design Polishing/Grinding Steps for Initial Grinding and Floor for Polishing Utilizing SASE Equipment as specified. Basis of Design: Level 2; Low sheen, 400 grit finish.

1. Grinding Step 1: 80 grit metal bonded diamond tooling.

2. Grinding Step 2: 150 grit metal bonded diamond tooling cross cutting previous grinding pattern.

3. Liquid Densifier Sealer Application

4. Polishing Step 1: 100 grit resin bonded diamond tooling.

5. Polishing Step 2: 200 grit resin bonded diamond tooling.

6. Polishing Step 4: 400 grit resin bonded diamond tooling

7. Allow minimum 12 hours dry time prior to next step.

8. Protective Sealer Application

9. High Speed Burnish Step 1: 800 grit burnishing pad.

3.6 ACCEPTANCE

A. Upon completion, the quality of the various special floor finishes are to meet and match the qualities, color renditions, sheens and types of finished surfaces specified and those of the mock ups, which were reviewed and approved as quality control guides.

3.7 PROTECTION

A. Protect polished/ground floor from damage, dirt pick-up, staining etc… and wear during remainder of construction period.

END OF SECTION

DTMB File #: 751/24168.ABG OHM File #: 7136-24-0050

WEATHER BARRIERS

072500 - Page 1 of 3

Addendum 1: 01/09/2025

Copyright © 2024 by the American Institute of Architects. Warning: This AIA MasterSpec-based document is protected by U.S. Copyright Law and International Treaties.

It was created by "OHM Advisors" for "Historic Mill Creek Visitor Center". A valid, current MasterSpec license is required for editing and use of this document for any other project.(26214)

SECTION 072500 - WEATHER BARRIERS

PART 1 - GENERAL

1.1 SUMMARY

A. Section Includes:

1. Building wrap.

1. Drainage wrap

2. Flexible flashing.

1.2 ACTION SUBMITTALS

B. Product Data:

1. Flexible flashing.

2. Drainage wrap

C. Product Data Submittals: For building drainage wrap, include data on air and water-vapor permeance based on testing in accordance with referenced standards.

D. Shop Drawings: Show details of building wrap at terminations, openings, and penetrations. Show details of flexible flashing applications. Coordinate flashing at windows with window manufacturer prior to installation.

PART 2 - PRODUCTS

2.1 WATER-RESISTIVE BARRIER

A. Building Wrap: ASTM E2556/E2556M, Type I ASTM E2556/E2556M, Type II air barrier; with flame-spread and smoke-developed indexes of less than 25 and 450, respectively, when tested in accordance with ASTM E84; UV stabilized; and acceptable to authorities having jurisdiction.

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

a. Alpha ProTech.

b. Barricade Building Products.

c. Benjamin Obdyke Incorporated.

d. Dorken Systems Inc.

e. DuPont de Nemours, Inc.

f. Kingspan Insulation LLC.

g. Typar Geosynthetics; a PGI brand.

2. Water-Vapor Permeance: Minimum 20 perms per ASTM E96/E96M, Desiccant Method (Procedure A).

3. Air Permeance: Maximum 0.004 cfm/sq. ft. at 0.3-inch wg when tested in accordance with

ASTM E2178.

4. Allowable UV Exposure Time: Not more than 180 days.

http://www.specagent.com/LookUp/?ulid=12017&mf=04&src=wd

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WEATHER BARRIERS

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Addendum 1: 01/09/2025

Copyright © 2024 by the American Institute of Architects. Warning: This AIA MasterSpec-based document is protected by U.S. Copyright Law and International Treaties.

It was created by "OHM Advisors" for "Historic Mill Creek Visitor Center". A valid, current MasterSpec license is required for editing and use of this document for any other project.(26214)

5. Flame Propagation Test: Materials and construction to be as tested in accordance with

NFPA 285.

2.1 WATER-RESISTIVE BARRIER

A. Drainage Wrap: ASTM E2556 dimensional water-resistive barrier that also creates a drainage plane; with flame-spread and smoke-developed indexes of less than 25 and 450, respectively, when tested in accordance with ASTM E84; and acceptable to authorities having jurisdiction.

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

a. Alpha ProTech.

b. Barricade Building Products.

c. Benjamin Obdyke Incorporated.

d. DuPont de Nemours, Inc.

e. Kingspan Insulation LLC.

f. National Shelter Products, Inc:

g. Tamlyn

2. Water-Vapor Permeance: Minimum 15 perms per ASTM E96/E96M, Desiccant Method (Procedure A).

3. Drainage: Not less than 98 percent when tested in accordance with ASTM E2273.

4. Allowable UV Exposure Time: Not more than 120 days.

B. Acrylic Seam Tape: Composite tape consisting of a pressure-sensitive acrylic adhesive, bonded to a polyethylene or polypropylene film for sealing joints and penetrations in building wrap. Provide tape from same manufacturer as approved wrap product.

2.2 FLEXIBLE FLASHING

A. Flexible membrane flashing materials for openings and penetrations recommended by manufacturer.

B. Primer for Flexible Flashing: Product recommended in writing by flexible flashing manufacturer for substrate.

C. Nails and Staples: Product recommended in writing by flexible flashing manufacturer and complying with ASTM F1667.

PART 3 - EXECUTION

3.1 INSTALLATION OF WATER-RESISTIVE BARRIER

A. Cover exposed exterior surface of sheathing with water-resistive barrier securely fastened to framing immediately after sheathing is installed.

B. Cover sheathing with water-resistive barrier as follows:

http://www.specagent.com/LookUp/?ulid=14956&mf=04&src=wd

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WEATHER BARRIERS

072500 - Page 3 of 3

Addendum 1: 01/09/2025

Copyright © 2024 by the American Institute of Architects. Warning: This AIA MasterSpec-based document is protected by U.S. Copyright Law and International Treaties.

It was created by "OHM Advisors" for "Historic Mill Creek Visitor Center". A valid, current MasterSpec license is required for editing and use of this document for any other project.(26214)

1. Cut back barrier 1/2 inch on each side of the break in supporting members at expansion-or control-joint locations.

2. Apply barrier to cover vertical flashing with a minimum 4-inch overlap unless otherwise indicated.

C. Building Wrap or Drainage Wrap: Comply with manufacturer's written instructions and warranty requirements.

1. Seal seams, edges, fasteners, and penetrations with tape.

2. Extend into jambs of openings and seal corners with tape.

3.2 INSTALLATION OF FLEXIBLE FLASHING

A. Apply flexible flashing where indicated to comply with manufacturer's written instructions.

1. Prime substrates as recommended by flashing manufacturer.

2. Lap seams and junctures with other materials at least 4 inches except that at flashing flanges of other construction, laps need not exceed flange width.

3. Lap flashing over water-resistive barrier at bottom and sides of openings.

4. Lap water-resistive barrier over flashing at heads of openings.

5. After flashing has been applied, roll surfaces with a hard rubber or metal roller to ensure that flashing is completely adhered to substrates.

END OF SECTION 072500

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STANDING-SEAM METAL ROOF PANELS

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SECTION 074113.16 - STANDING-SEAM METAL ROOF PANELS

PART 1 - GENERAL

1.1 SUMMARY

A. Section includes factory formed metal roof panels: Standing-seam, hidden fastener, non-insulated.

B. Manufactured metal panels for soffit panels, with related flashings and accessory components.

1.2 PREINSTALLATION MEETINGS

A. Preinstallation Conference: Conduct conference at Project site.

1. Meet with Owner, Architect, metal panel Installer, metal panel manufacturer's representative, structural-support Installer, and installers whose work interfaces with or affects metal panels, including installers of roof accessories and roof-mounted equipment.

2. Review and finalize construction schedule and verify availability of materials, Installer's personnel, equipment, and facilities needed to make progress and avoid delays.

3. Review methods and procedures related to metal panel installation, including manufacturer's written instructions.

4. Examine support conditions for compliance with requirements, including alignment between and attachment to structural members.

5. Review structural loading limitations of deck during and after roofing.

6. Review flashings, special details, drainage, penetrations, equipment curbs, and condition of other construction that affect metal panels.

7. Review governing regulations and requirements for insurance, certificates, and tests and inspections if applicable.

8. Review temporary protection requirements for metal panel systems during and after installation.

9. Review procedures for repair of metal panels damaged after installation.

10. Document proceedings, including corrective measures and actions required, and furnish copy of record to each participant.

1.3 ACTION SUBMITTALS

A. Product Data: For each type of product.

B. Shop Drawings:

1. Include fabrication and installation layouts of metal panels; details of edge conditions, joints, panel profiles, corners, anchorages, attachment system, trim, flashings, closures, and accessories; and special details. All fastening patterns shall be clearly designated to meet the specified wind speed requirements.

2. Accessories: Include details of the flashing, trim, and anchorage systems, at a scale of not less than 1-1/2 inches per 12 inches.

3. Indicate work to be field fabricated or field assembled.

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4. Indicate anchorage spacing and fastening requirements of clips to meet performance requirements.

C. Samples: For each type of metal panel indicated.

1.4 INFORMATIONAL SUBMITTALS

A. Manufacturer and Installer qualifications

B. Product test reports.

C. Warranties: Sample of special warranties.

D. Field quality control inspection reports

1.5 CLOSEOUT SUBMITTALS

A. Maintenance data.

B. Manufacturer's Warranty: Executed copy of manufacturer's warranty.

1.6 QUALITY ASSURANCE

A. Installer Qualifications: Installer of sheet metal roofing for a minimum of 10 years.

B. Manufacturer Qualifications: Manufacturer shall have a minimum of ten (10) years experience in the factory fabrication of meal panels.

C. Roll-Formed Sheet Metal Roofing Fabricator Qualifications: Minimum of 10 years factory forming experience.

D. Sheet Metal Roofing Standard: Comply with SMACNA's "Architectural Sheet Metal Manual" and NRCA Waterproofing Manual and manufacturer’s installation guidelines.

E. Source Limitations: Obtain all components for roofing system from or approved by roofing system manufacturer.

F. Construction Inspection: Manufacturer shall conduct on site inspection and formal written report to Architect at the following intervals:

1. Twenty Five (25) percent sheet metal roofing installation completion, and final inspection upon completion of roof system and gutters/downspouts.

1.7 DELIVERY, STORAGE, AND HANDLING

A. Deliver components, metal panels, and other manufactured items so as not to be damaged or deformed. Package metal panels for protection during transportation and handling.

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B. Unload, store, and erect metal panels in a manner to prevent bending, warping, twisting, and surface damage.

C. Stack metal panels horizontally on platforms or pallets, covered with suitable weathertight and ventilated covering. Store metal panels on Project site as recommended by manufacturer to minimize damage, ensure dryness, with positive slope for drainage of water. Do not store metal panels in contact with other materials that might cause staining, denting, or other surface damage.

D. Retain strippable protective covering on metal panels and trims during installation for removal immediately after installation.

1.8 FIELD CONDITIONS

A. Weather Limitations: Proceed with installation only when existing and forecasted weather conditions permit assembly of metal panels to be performed in accordance with manufacturers' written instructions and warranty requirements.

1.9 COORDINATION

A. Coordinate sizes and locations of roof curbs, equipment supports, and roof penetrations with actual equipment provided.

B. Coordinate metal panel installation with rain drainage work, flashing, trim, construction of soffits, and other adjoining work to provide a leakproof, secure, and noncorrosive installation.

1.10 WARRANTY

A. Product Warranty: Manufacturer's standard form in which manufacturer agrees to repair or replace components of metal panel systems that fail in materials or workmanship within specified warranty period.

1. Failures include, but are not limited to, the following:

2. Structural failures including rupturing, cracking, or puncturing.

3. Deterioration of metals and other materials beyond normal weathering.

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

B. Special Warranty on Finishes: Manufacturer's standard form in which manufacturer agrees to repair finish or replace sheet metal roofing that shows evidence of deterioration of factory-applied finishes within specified warranty period.

1. Exposed Panel Finish: Deterioration includes, but is not limited to, the following:

a. Color fading more than 5 Delta E units when tested in accordance with

ASTM D2244.

b. Chalking in excess of a No. 8 rating when tested in accordance with ASTM D4214.

c. Cracking, checking, peeling, or failure of paint to adhere to bare metal.

2. Finish Warranty Period: 30 years from date of Substantial Completion.

C. Special Weathertight Warranty: Manufacturer's Standard warranty in which manufacturer agrees to repair and replace roof panel assemblies that fail to remain weathertight within the specified warranty period.

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1. Product Warranty Period: 20 years from date of Substantial Completion.

PART 2 - PRODUCTS

2.1 MANUFACTURERS

A. Available Manufacturers: Subject to compliance with requirements of Contract Documents as judged by the Architect, manufacturers offering products that may be incorporated into the Work include:

1. Architectural Metal Systems.

2. ATAS International.

3. CENTRIA Architectural Systems.

4. Morin - A Kingspan Group Company.

5. Ultra Seam Incorporated.

6. Metal Panel Systems

7. DMI; Dimensional Metals Inc.

B. Basis of Design (Product Standard): Contract Documents are based on products and systems specified to establish a standard of quality. Other manufacturers offering products having equivalent characteristics may be considered, provided deviations are minor and comply with requirements of Contract Documents as judged by the Architect.

2.2 SOURCE LIMITATIONS

A. Single Source Responsibility: Furnish each type of product from single manufacturer. Provide secondary materials only as recommended by manufacturer of primary materials.

2.3 PERFORMANCE REQUIREMENTS

A. Structural Performance: Provide metal panel systems capable of withstanding the effects of the following loads, based on testing according to ASTM E 1592. Provide clips, fasteners, and clip spacing of type indicated and with capability to sustain, without failure, a load equal to 2 times the design negative uplift pressure.

1. Wind Loads: As indicated on Drawings.

B. Thermal Movements: Allow for thermal movements from ambient and surface temperature changes by preventing buckling, opening of joints, overstressing of components, failure of joint sealants, failure of connections, and other detrimental effects. Base calculations on surface temperatures of materials due to both solar heat gain and nighttime-sky heat loss.

1. Temperature Change (Range): 120 deg F, ambient; 180 deg F, material surfaces.

2.4 STANDING-SEAM METAL ROOF PANELS

A. General: Provide factory-formed metal roof panels designed to be installed by lapping and interconnecting raised side edges of adjacent panels with joint type indicated and mechanically

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1. Steel Panel Systems: Unless more stringent requirements are indicated, comply with

ASTM E1514.

B. Vertical-Rib, Snap-Joint, Standing-Seam Metal Roof Panels (At Visitor Center and Restroom):

Formed with vertical ribs at panel edges and intermediate stiffening ribs symmetrically spaced between ribs; designed for sequential installation by mechanically attaching panels to supports using concealed clips located under one side of panels, engaging opposite edge of adjacent panels, and snapping panels together.

1. Basis-of-Design Product: ATAS International, Inc.: Dutch Seam MRD

2. Metallic-Coated Steel Sheet: Zinc-coated (galvanized) steel sheet complying with ASTM

A653/A653M, G90 (Z275) coating designation, or aluminum-zinc alloy-coated steel sheet complying with ASTM A792/A792M, Class AZ50 (Class AZM150) coating designation;

structural quality. Prepainted by the coil-coating process to comply with ASTM A755/A755M.

3. Nominal Thickness: 0.029 inch

4. Exterior Finish: Two-coat fluoropolymer.

5. Color: As indicated in Division 01 "Design Selections"

6. Back Coating: Manufacturer's standard factory-applied, flexible, protective back coating.

7. Dutch Seam MRD:

a. Seam Height: 1.5 inches (38 mm).

b. Panel Width: 15 inches (381 mm).

C. Mechanically seamed, double-locked structural panel (At Roof Over Mech Equipment at 1:12 slope).

1. Basis-of-Design Product: ATAS International, Inc.: 2" Field-Lok.

2. Metallic-Coated Steel Sheet: Zinc-coated (galvanized) steel sheet complying with ASTM

A653/A653M, G90 (Z275) coating designation, or aluminum-zinc alloy-coated steel sheet complying with ASTM A792/A792M, Class AZ50 (Class AZM150) coating designation;

structural quality. Prepainted by the coil-coating process to comply with ASTM A755/A755M.

3. Nominal Thickness: .023 inch.

4. Exterior Finish: Two-coat fluoropolymer.

5. Color: Match Color used at Visitor Center & Restrooms.

6. Back Coating: Manufacturer's standard factory-applied, flexible, protective back coating.

7. 2" Field Lock.

a. Seam Height: 2 inches.

b. Panel Width: 15 inches.

2.5 UNDERLAYMENT MATERIALS

A. At Visitor Center over SIP Roof Deck: Self-Adhering, Vapor Permeable High- Temp Underlayment on Ventilating Woven Mat.

1. Basis of Design: VaporDry® SA Roof Underlayment.

B. At Restroom Facility over Ventilated Attic and: Self-Adhering, High-Temperature Underlayment:

Provide self-adhering, cold-applied, sheet underlayment, a minimum of 45 mils thick, consisting of slip-resistant, polyethylene-film top surface laminated to a layer of butyl or SBS-modified

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1. Thermal Stability: Stable after testing at 240 deg F; ASTM D 1970.

2. Low-Temperature Flexibility: Passes after testing at minus 20 deg F; ASTM D 1970.

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

a. ATAS International, Inc

b. Henry Company.

c. Owens Corning.

2.6 MISCELLANEOUS MATERIALS

A. Panel Accessories: Provide components required for a complete, weathertight panel system including trim, copings, fasciae, mullions, sills, corner units, clips, flashings, sealants, gaskets, fillers, closure strips, and similar items. Match material and finish of metal panels unless otherwise indicated.

1. Closures: Provide closures at eaves and ridges, fabricated of same metal as metal panels.

2. Backing Plates: Provide metal backing plates at panel end splices, fabricated from material recommended by manufacturer.

3. Closure Strips: Closed-cell, expanded, cellular, rubber or crosslinked, polyolefin-foam or closed-cell laminated polyethylene; minimum 1-inch-thick, flexible closure strips; cut or premolded to match metal panel profile. Provide closure strips where indicated or necessary to ensure weathertight construction.

4. 16 ga Falvanized steel clip base with 22 ga Galvanized steel stem designed to withstand negative-load requirements.

5. Spacers and Bearing Plates at each clip location: 2 spacers each for 3/4" space as indicated on drawings.

B. Flashing and Trim: Provide flashing and trim formed from same material as metal panels as required to seal against weather and to provide finished appearance. Locations include, but are not limited to, eaves, rakes, corners, bases, framed openings, ridges, fascia, and fillers. Finish flashing and trim with same finish system as adjacent metal panels.

C. Continuous Soffit Vents: Aluminum, 2 inch wide and provides 9 square inches of net free area per linear foot.

1. Air Vent SV202; painted to match metal flashing and trim.

D. Panel Fasteners: Self-tapping screws, self-locking rivets and bolts, and other suitable fasteners designed to withstand design loads. Manufacturer shall provide or authorize all fasteners utilized with the sheet metal roofing system.

1. Exposed Fasteners: Heads matching color of sheet metal roofing by means of factory-applied coating.

2. Fasteners for Flashing and Trim: Blind fasteners or screws spaced to resist wind uplift loads.

E. Panel Sealants: Provide sealant type recommended by manufacturer that are compatible with panel materials, are nonstaining, and do not damage panel finish.

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1. Sealant Tape: Pressure-sensitive, 100 percent solids, gray polyisobutylene compound sealant tape with release-paper backing; 1/2 inch wide and 1/8 inch thick.

2. Joint Sealant: ASTM C 920; as recommended in writing by metal panel manufacturer.

3. Butyl-Rubber-Based, Solvent-Release Sealant: ASTM C 1311.

F. Gutters: Formed from aluminum, complete with end pieces, outlet tubes, and other special pieces as required. Fabricate in minimum 144-inch (3658-mm) long sections, of size and metal thickness in accordance with SMACNA's "Architectural Sheet Metal Manual." Furnish gutter supports spaced a maximum of 36 inches (914 mm) o.c., fabricated from same metal as gutters. Provide wire ball strainers of compatible metal at outlets. Finish gutters to match metal roof panels.

G. Downspouts: Formed from aluminum of the same color and finish as roof panels. Fabricate in 144-inch (3658-mm) long sections, complete with formed elbows and offsets, of size and metal thickness in accordance with SMACNA's "Architectural Sheet Metal Manual." Finish downspouts to match gutters.

2.7 FABRICATION

A. Fabricate and finish metal panels and accessories at the factory, by manufacturer's standard procedures and processes, as necessary to fulfill indicated performance requirements demonstrated by laboratory testing. Comply with indicated profiles and with dimensional and structural requirements.

B. Provide panel profile, including major ribs and intermediate stiffening ribs, if any, for full length of panel.

C. Sheet Metal Flashing and Trim: Factory-fabricate flashing and trim to comply with manufacturer's written instructions and ANSI/MCA FTS-1-2019, "Test Method for Wind Load Resistance of Flashings Used with Metal Roof Systems" that apply to design, dimensions, metal, and other characteristics of item indicated.

1. Form exposed sheet metal accessories that are without excessive oil canning, buckling, and tool marks and that are true to line and levels indicated, with exposed edges folded back to form hems.

2. Seams for Other Than Aluminum: Fabricate nonmoving seams in accessories with flat-lock seams. Tin edges to be seamed, form seams, and solder.

3. Sealed Joints: Form nonexpansion, but movable, joints in metal to accommodate sealant.

4. Conceal fasteners and expansion provisions where possible. Exposed fasteners are not allowed on faces of accessories exposed to view.

5. Fabricate cleats and attachment devices from same material as accessory being anchored or from compatible, noncorrosive metal recommended in writing by metal panel manufacturer.

D. No exposed cut edges on seams or panels.

2.8 FINISHES

A. Panels and Accessories:

1. Two-Coat Fluoropolymer: AAMA 621. Fluoropolymer finish containing not less than 70 percent PVDF resin by weight in color coat.

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B. All areas of panel and trim accessories exposed to view to be finished.

1. Concealed Finish: White or light-colored acrylic or polyester backer finish.

C. Protect mechanical and painted finishes on exposed surfaces from damage by applying a strippable, temporary protective covering before shipping.

D. Appearance of Finished Work: Noticeable variations in same piece are unacceptable. Variations in appearance of other components are acceptable if they are within the range of approved Samples and are assembled or installed to minimize contrast.

PART 3 - EXECUTION

3.1 UNDERLAYMENT INSTALLATION

A. Self-Adhering Sheet Underlayment: Apply primer if required by manufacturer. Comply with temperature restrictions of underlayment manufacturer for installation. Apply at locations indicated on Drawings, wrinkle free, in shingle fashion to shed water, and with end laps of not less than 6 inches staggered 24 inches between courses. Overlap side edges not less than 3-1/2 inches. Roll laps with roller. Cover underlayment within 14 days.

1. Apply over the entire roof surface.

B. Slip Sheet: Apply slip sheet over underlayment before installing metal roof panels.

3.2 METAL PANEL INSTALLATION

A. Install metal panels in accordance with manufacturer's written instructions in orientation, sizes, and locations indicated. Install panels perpendicular to supports unless otherwise indicated.

Anchor metal panels and other components of the Work securely in place, with provisions for thermal and structural movement.

1. Shim or otherwise plumb substrates receiving metal panels.

2. Flash and seal metal panels at perimeter of all openings. Fasten with self-tapping screws.

Do not begin installation until air- or water-resistive barriers and flashings that will be concealed by metal panels are installed.

3. Install screw fasteners in predrilled holes.

4. Remove protective film from surface of roof panels and trims immediately prior to installation.

5. Locate and space fastenings in uniform vertical and horizontal alignment.

6. Install flashing and trim as metal panel work proceeds.

7. Locate panel splices over, but not attached to, structural supports. Stagger panel splices and end laps to avoid a four-panel lap splice condition.

8. Align bottoms of metal panels and fasten with blind rivets, bolts, or self-tapping screws.

Fasten flashings and trim around openings and similar elements with self-tapping screws.

9. Provide weathertight escutcheons for pipe- and conduit-penetrating panels.

B. Standing-Seam Metal Roof Panel Installation: Fasten metal roof panels to supports with concealed clips at each standing-seam joint at location, spacing, and with fasteners recommended in writing by manufacturer.

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1. Install clips to supports with self-tapping fasteners.

2. Install pressure plates at locations indicated in manufacturer's written installation instructions.

3. Snap Joint: Nest standing seams and fasten together by interlocking and completely engaging factory-applied sealant.

C. Accessory Installation: Install accessories with positive anchorage to building and weathertight mounting, and provide for thermal expansion. Coordinate installation with flashings and other components.

D. Flashing and Trim: Comply with performance requirements, manufacturer's written installation instructions, and SMACNA's "Architectural Sheet Metal Manual." Provide concealed fasteners where possible, and set units true to line and level as indicated. Install work with laps, joints, and seams that will be permanently watertight and weather resistant.

E. Conceal fasteners and expansion provisions where possible in exposed work and locate to minimize possibility of leakage. Cover and seal fasteners and anchors as required for a tight installation.

F. Gutters: Join sections with riveted and soldered or lapped and sealed joints. Attach gutters to eave with gutter hangers spaced not more than 36 inches (914 mm) o.c. using manufacturer's standard fasteners. Provide end closures and seal watertight with sealant. Provide for thermal expansion.

G. Downspouts: Join sections with telescoping joints. Provide fasteners designed to hold downspouts securely 1 inch away from walls; locate fasteners at top and bottom and at approximately 60 inches o.c. in between.

1. Provide elbows at base of downspouts to direct water away from building.

2. Connect downspouts to underground drainage system indicated.

H. Pipe Flashing: Form flashing around pipe penetration and metal roof panels. Fasten and seal to metal roof panels as recommended by manufacturer.

3.3 FIELD QUALITY CONTROL

A. Manufacturer's Field Service: Engage a factory-authorized service representative to test and inspect metal roof panel installation, including accessories. Report results in writing.

B. Remove and replace applications of metal roof panels where tests and inspections indicate that they do not comply with specified requirements.

C. Additional tests and inspections, at Contractor's expense, are performed to determine compliance of replaced or additional work with specified requirements.

D. Prepare test and inspection reports.

3.4 CLEANING AND PROTECTION

A. Remove temporary protective coverings and strippable films, if any, as metal panels are installed, unless otherwise indicated in manufacturer's written installation instructions. On completion of

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Maintain in a clean condition during construction.

END OF SECTION 074113.16

CASEWORK INDICATOR

S2436-12-RF

CABINET TYPE (SEE ABBREVIATIONS BELOW)

WIDTH IN INCHES (TWO DIGITS)

HEIGHT IN INCHES (TWO DIGITS), WALL CABINETS OR IF NOT TYPICAL

DEPTH IN INCHES (TWO DIGITS), IF NOT TYPICAL

SPECIAL CONDITION, IF USED (SEE ABBREVIATIONS BELOW)

ACCESSIBLE CABINETS

• WALL CABINET

BOTTOM SHELF @ 48" MAX

• BASE CABINETS

34" COUNTER HEIGHT

SPECIAL CONDITIONS

A ACCESSIBLE (SEE BELOW)

AP APRON

E FINISHED END PANEL

F SCRIBE FILLER

FD FILE DRAWER

L LOCKABLE

RF REMOVEABLE FRONT

SB SUPPORT BRACKET

SP SUPPORT PANEL

CABINET TYPES

B BASE CABINET

BC BASE BLIND CORNER

BD BASE TOP DRAWER

BT BASE TRASH

C BASE CORNER

DX- DRAWER BASE (X = QTY.)

LS LAZY SUSAN CORNER

M MICROWAVE BASE

O OPEN BASE CABINET

S SINK BASE

T TALL CABINET

TC TALL CUSTOM

W WALL CABINET

WBC WALL BLIND CORNER

WC WALL CORNER

WO OPEN WALL CABINET

CASEWORK LEGEND

B18-A S36-A B36-A B36-A

'-2

4' -4

/4

4"

2' -1

0"

4" 1'

-0

1/

2"

1' -0

1/

2"

1' -0

1/

2"

3/

4" 3'

-3

/2

4"

10'-8 3/8"

BIRCH PLYWOOD DISPLAY SHELVING AND CLOTHING RODS

PP-1

HORIZONTAL BIRCH PLYWOOD PLANK WALLS

SS-1 COUNTERTOP

PL-2

MURAL LOCATION

WB-1

A-501

A-501

A-501

2" 2'-9" 2" 2'-10" 2" 2'-9" 2"

9'-0" 8'-3"

2" 2'-6" 2" 2'-7" 2" 2'-6" 2"

A-501

TYP

MITER PLANK AT CORNERS - TYP

BO36 BO30

A-501

A-501

TYP

SS-1

RB-1

NOTE: INSTALL GROMMETS IN COUNTERTOP IN 3

PLACES MIN. COORDINATE W/ OWNER PRIOR TO

DRILLING HOLES.

BO33

SS-1

A-501

TYP

A-501

RB-1

PP-1

2' -1

0"

PL-2

MITER CORNERS, TYP

NOTE: INSTALL GROMMETS IN COUNTERTOP IN 3

PLACES MIN. COORDINATE W/ OWNER PRIOR TO

DRILLING HOLES.

BP-1

PL-1

2' -1

0"

8" 9'-3" 8"

10'-7"

A-501

TYP

A-501

SS-1

MITER CORNERS/ EDGES

ROUGHEN EXISTING

SURFACES, APPLY

BONDING AGENT, DOWEL

INTO EXISTING, FORM

AND POUR NEW SLAB TO

MATCH EXISTING HEIGHT.

STAINLESS STEEL WALL

MOUNTED HANDRAIL;

REF: A-601 FOR DETAIL

2' -1

0"

1'-0"

1'-0"

MITER PLANK AT CORNERS - TYP

LOUVER; REF: MECH.

W/ 2-1/2" WOOD TRIM TO

MATCH WOOD PLANK

PP-1

HORIZONTAL BIRCH PLYWOOD PLANK WALLS

WB-1

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ARCHITECTS ENGINEERS PLANNERS

OHM-ADV…