RFB19-BM26_ADDENDUM 1.pdf

ADDENDUM NO. 1

ISSUE DATE: October 28, 2019

RE: SUN PRAIRIE CITY HALL

FIRST FLOOR RESTROOM RENOVATIONS: RFB#19-BM26

BID OPENING: November 5, 2019 2:00 pm

FROM: Isthmus Architecture 2453 Atwood Avenue, Suite 209 Madison, WI 53704

TO: Prospective Bidders

This addendum forms a part of the Contract Documents and modifies the original Contract Documents dated October 11, 2019 as noted below. Acknowledge receipt of this Addendum by inserting the number and issue date of this addendum in the blank space provided on the Bid Form. Failure to do so may subject the Bidder to disqualification.

This Addendum consists of (1) page and these attached documents:

Pre-Bid Sign-in Sheet

CHANGES TO SPECIFICATIONS:

Section 06 65 10 - Solid Surface Fabrication: ADD attached section consisting of four pages.

CHANGES TO DRAWINGS:

DWG T100: General Note:

• ADD: Contractor shall verify all dimensions on site. Do not scale the drawings.

DWG AD100 and A100: Cast Iron Pipe Replacement:

Replace all existing horizontal cast iron pipe within plumbing chase between Toilet Rooms as follows:

• Plumbing Contractor will provide the design; however, the City of Sun Prairie will not require a formal plumbing submittal. The Contractor shall work with the plumbing inspector to determine final details of the replacement and document the installation accordingly in the required as-built drawings.

• Toilet and Lavatory Carriers shall remain.

• Vent Stack (located between accessible stalls) shall remain.

• Include horizontal waste and all associated vent piping for Water Closets and Lavatories.

• Removal and restoration of existing gypsum board finishes will be required to access the work.

DWG A400 – RCP Note 3: Strike “(M. TOILET ONLY).”

DWG A400 – DETAIL 1: ADD designation “B” to each downlight in Men’s Toilet.

END OF ADDENDUM

Isthmus Architecture City of Sun Prairie – City Hall 2453 Atwood Avenue, Ste 209 300 East Main Street Madison, WI. 53704 Sun Prairie, WI 53590

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City Hall First Floor Restroom Renovations 06 65 10 - 1

SECTION 06 65 10

SOLID SURFACE FABRICATION

PART 1 - GENERAL

1.1 Summary

A. Section includes horizontal and vertical product types trim materials, countertop and sink and bowl materials.

1.2 Definitions

A. Solid surface sheets and shaped goods are non-porous, homogeneous, hygienic, renewable materials which consist of acrylic resins, ATH mineral fillers and pigments.

1.3 Submittals

A. Product Data

1. Color chart

2. MSDS sheets

3. Product Description to include identifying name and color

B. Shop Drawings

1. Indicate plans, dimensions, elevations, layout, cutouts, accessories, support or reinforcements, gloss levels, and edge treatments.

2. Field verify all dimensions with existing conditions.

C. Samples of final color selection, minimum 2” x 2” to be retained as standard.

D. Manufactures Fabrication and Installation Manual

1.4 Quality Assurance

A. Fabricator and Installer qualifications

1. Employ skilled craftsmen with experience for the applications required for this project.

2. Installer must be certified by the local master distributor.

B. Applicable Standards

1. Unless otherwise indicated materials must meet industry standards as referenced herein:

a. American National Standards Institute (ANSI),

b. National Sanitary Foundation (NSF),

c. National Electrical Manufacturers Association (NEMA),

d. American Society for Testing and Materials (ASTM)

C. Source Limitations

1. Obtain all materials from single master distributor source.

1.5 Delivery, Storage, Handling

A. Handle materials according to manufacturer’s instructions, B. Stores all components indoors and provides protective wrapping or crating.

C. Do not deliver any parts or components to the job site until it is prepared for installation.

First Floor Restroom Renovations 06 65 10 - 2

1.6 Warranty

A. Provide the manufacture’s 10 year warranty against defects in materials.

1. Damage caused by abuse, improper manufacturing or installation techniques, or neglect will not to be warranted.

1.7 Maintenance

A. Provide manufacturer’s recommendations for maintenance.

B. Provide materials for future repair, if necessary, from the same batch or dye lot as the installed products.

PART 2 - PRODUCTS

2.1 Acceptable Manufacturers

A. Avonite

B. Wilsonart

C. Meganite

2.2 Materials

A. Solid homogeneous sheet blended with acrylic resins, ATH mineral fillers and pigments to comply with industry standardized performance characteristics identified below.

B. Thickness:

1. Match existing in adjacent restrooms

C. Match color, design and details for all surfaces in adjacent restrooms.

D. Integral Sinks or bowls for each horizontal surface as shown on drawings

E. To meet or exceed all Performance Characteristics,

1. Flame Spread Index <25, in accordance with ASTM E 84, Class 1A

2. Smoke Developed Index < 25, in accordance with ASTM E 84, Class 1A

3. Stain Resistance to meet ANSI Z-124.3, no effect

4. Wear and Cleanability to meet ANSI Z-124.3 passes

5. Fungus Resistance to meet ASTM G21, does not support microbial growth

6. Bacteria Resistance to meet ASTM G22, does not support microbial growth

7. Meet NSF 51, approved

8. Impact Resistance to meet NEMA LD3-3.3, ½ pound ball drop

9. Color Stability to meet NEMA 3-3.3, no change

10. Barcol Hardness to meet ASTM D2583, 60

11. Tensile Strength to meet ASTM D 638, 6000 p.s.i.

First Floor Restroom Renovations 06 65 10 - 3

12. Flexural Strength to meet ASTM D790, 9000 p.s.i.

13. Thermal Expansion to meet ASTM D696, 1.3” 10-6 in/in /°F

14. Boiling Water Surface Resistance to meet NEMA LB3-3.5, no effect

15. High Temperature Resistance to meet NEMA 3-3.5, no effect

16. Water Absorption to meet ASTM D570, 0.04%

17. Specific Gravity, 1.7

F. Accessories

1. Manufacturer’s 2-part approved adhesive to provide non-porous, inconspicuous joints.

G. Fabrication

1. Fabrication to be completed by a certified fabricator and installer

a. Fabricated according to current Fabrication, and Industry- Accepted Standards

2. Fabricate parts and components in manufacturing shop to greatest extent practical to size and shapes indicated, in accordance with approved shop drawings, and manufactures or industry’s printed instructions.

3. Form joints between compounds using manufacturers’ standard joint adhesive to be inconspicuous and without voids.

a. Reinforcement strips according to the current manual are required on all seams.

4. Rout and finish all component edges with clean and uniform work.

a. All cutouts must be routed and then sanded for a smooth edge

5. Repair all defective or inaccurate work.

6. When applicable, comply with manufacturers thermoforming requirements

a. Heat entire piece, (do not spot heat) to a uniform 280° - 325 °

b. Form pieces to shape prior to seaming and joining

c. Sand edges and remove nicks and scratches

d. Prevent blistering, whitening, and cracking during the forming process.

H. Finishing

1. Surfaces should have a consistent and uniform finish

2. Select color from standard offering

a. Select finish after reviewing samples.

3. Retention of finish depends upon color selected and the intended use of the product.

a. Match existing installation in adjacent restrooms.

PART 3 - EXECUTION

3.1 Examination

A. Examine substrates where solid surface will be installed with fabricator for compliance with tolerances and other conditions at job site.

1. Coordinate with contractor to correct unsatisfactory conditions.

First Floor Restroom Renovations 06 65 10 - 4

B. Proceed to complete installation only after all conditions are repaired and acceptable.

3.2 Installation

A. Install solid surface according to manufacturer’s Fabrication and Installation Manual

1. Install all components plumb, level, and rigid; scribed to adjacent surfaces; according to approved shop drawings and product data.

2. Provide components in largest pieces available for proper installation.

3. Form field joints using the manufacturer’s approved adhesive, with joint inconspicuous in finished work.

4. Adhere undermount sinks/bowls to the countertop using the manufacturers recommended adhesive.

5. Provide solid surface materials bowls and lavatories sinks with overflows in locations shown in shop drawings.

6. Anchor securely to base cabinets or supports according to manufacturers recommendations.

7. Cut and finish component edges with clean, sharp returns.

8. Carefully remove scratches and clean entire surface.

9. Install countertops with no more than 1/8” sag, bow or other variation from a straight line.

3.3 Repair

A. Repair or replace any damaged work.

3.4 Clean and Protect

A. Keep components clean during transportation and installation.

B. Clean all surfaces according to manufacturers Care and Maintenance Guide C. Remove all adhesives, caulks, sealants, etc.

D. Cover and protect all surfaces to protect from damage until accepted by owner.

END