NOTICE TO BIDDERS OF RECORD

Transcription

1 NOTICE TO BIDDERS OF RECORD ADDENDUM NO. 02 ROOF REPLACEMENT: MOUNT NITTANY MIDDLE SCHOOL 656 BRANDYWINE DRIVE STATE COLLEGE, PA HLA # - March 28, 2016 This Addendum forms a part of the Contract Documents and modifies the original Project Manual and Drawings dated Bid Set March 11, Bidders shall carefully examine Drawings and Project Manual for revised and updated items. NOTE: Bidders must acknowledge receipt of this Addendum on their Bid Form. CLARIFICATIONS ITEMS: 2.01 A recovery board at Mount Nittany Middle School is not required AS PER Firestone s instructions to this office Drain replacement as a unit price reflects a full replacement Assume that the concrete has formed crickets to drains. At the Mount Nittany Middle School. SPECIFICATIONS ITEMS: 2.01 Invitation to Bid, Paragraph Bids Due, Item A.: Bid due date extended to Tuesday, April 12, See attached Section 08620, Unit Skylights, relating to the North High School Building. DRAWINGS ITEMS: 2.01 See attached drawings D1,D2,D3: A1,A2,A3,A4,A5 relating to the new scope of work at the North High School Building. Robert H. Hoffman, AIA, LEED AP HOFFMAN LEAKEY ARCHITECTS, LLC 110 West Main Street P.O. Box 865 Boalsburg, PA O: F: rhoffman@hl-architects.com /docs2\addendum02 END OF ADDENDUM NO. 02 HLA # SCASD ADDENDUM NO. 02

2 THE SECTION UNIT SKYLIGHTS PART 1 - GENERAL 1.01 WORK INCLUDED 1. Removal of existing skylights. 2. Protective netting over interior during construction. 3. New skylights WORK BY OTHERS 1. Roof flashing at curbs by roofing contractor REFERENCES A. General: Standards listed by reference, including revisions by issuing authority, form a part of this specification section to extent indicated. Standards listed are identified by issuing authority, authority abbreviation, designation number, title or other designation established by issuing authority. Standards subsequently referenced herein are referred to by issuing authority abbreviation and standard designation. B. Aluminum Association (AA): 1. Specifications for Aluminum Structures. C. American Architectural Manufacturers Association (AAMA): Voluntary Specification, Performance Requirements and Test Procedures for High Performance Organic Coatings on Aluminum Extrusions and Panels Voluntary Specification for High Performance Organic Coatings on Architectural Extrusions and Panels Specification for Anodized Architectural Aluminum. D. American Society for Testing and Materials, ASTM: 1. D4802 Specification for Poly (Methyl Methacrylate) Acrylic Plastic Sheet. 2. ASTM E283 Test Method for Rate of Air Leakage through Exterior Windows, Curtain Walls and Doors. 3. ASTM E330 Test Method for Structural Performance of Exterior Windows, Curtain Walls and Doors by Uniform Static Air Pressure Difference. 4. E331 Test Method for Water Penetration of Exterior Windows, Curtain Walls and Doors by Uniform Static Air Pressure Difference. E. National Roofing Contractors Association (NRCA): 1. Roofing and Waterproofing Manual UNIT SKYLIGHT PERFORMANCE REQUIREMENT 1. Design framing and dome infill assembly to support the following load requirements: a. 40-psf snow load plus dead load. 2. Fabrication and installation of unit skylights shall comply with The ICC 2009 Building Code. HLA SCASD UNIT SKYLIGHTS

3 THE 1.05 SUBMITTALS A. Product Data: Submit product data, for specified products. B. Structural loading confirmation. C. Insulated curb detailing. D. Warranty. E. Submit shop drawings showing layout, profiles, and product components, including anchorage, accessories, finishes and colors. 1. Submit shop drawings for approval prior to fabrication. Include details of framing members, glazing materials where applicable, sealants, fasteners, anchors and thicknesses and types of formed flashing and closures. F. Samples: Submit selection and verification samples for finishes, colors and textures. 1. Glazing Samples: Submit a verification sample of plastic glazing material in specified color. 2. Finish Samples: Submit a verification sample of aluminum finish in specified color. G. Quality Assurance Submittlas: Submit the following: 1. Test Reports: Certified test reports showing compliance with specified performance characteristics and physical properties. 2. Certificates: Product certificates signed by manufacturer certifying materials comply with specified performance characteristics and criteria, and physical requirements 3. Manufacturer s Instructions: Manufacturer s installation instructions. 4. Specifier Note: Coordinate paragraph below with Part 3 Field Quality Requirements Article herein. Retain or delete as applicable. 5. Manufacturer s Field Reports: Manufacturer s field reports specified herein QUALITY ASSURANCE A. Qualifications: 1. Installer Qualifications: Installer experienced in performing work of this section who has specialized in installation of work similar to that required for this project. a. Installer: Unit skylights shall be installed by workmen with a minimum of 2 years experience in installation of similar units. 2. Manufacturer Qualifications: Manufacturer capable of providing field service representation during construction, approving acceptable installer and approving application method. a. Manufacturer: Unit skylights shall be manufactured by a firm with a minimum of 10 years experience in the fabrication and installation of plastic unit skylights. Manufacturers proposed for use, which are not named in this Section, shall submit evidence of ability to meet performance and fabrication requirements specified not less than 10 days prior to bid date, and shall include a list of projects of similar design and complexity completed within the past five years. B. Regulatory Requirements: 1. IBC 2009 as required by the State of Pennsylvania and Administration by The Centre Region Code Administration, 2643 Gateway Drive, State College, PA 16801, Phone HLA SCASD UNIT SKYLIGHTS

4 THE 1.07 DELIVERY, STORAGE & HANDLING A. Delivery: Deliver materials in manufacturer's original, unopened, undamaged containers with identification labels intact. Sequence deliveries to avoid delays, but minimize on site storage. B. Storage and Protection: Store materials protected from exposure to harmful weather conditions and at temperature and humidity conditions recommended by manufacturer. 1. Protect from damage from sunlight, weather, excessive temperatures and construction operations PROJECT CONDITIONS A. Field Measurements: Verify actual measurements/openings by field measurements before fabrication; show recorded measurements on shop drawings. Coordinate field measurements and fabrication schedule with construction progress to avoid construction delays. 1. Measurements: Take accurate field measurements before fabrication. Do not delay job progress; allow for field tolerances if taking field measurements before fabrication is not possible WARRANTY A. Project Warranty: Refer to Conditions of the Contract for project warranty provisions. B. Manufacturer s Warranty: Provide written warranty signed by manufacturer, agreeing to repair or replace work which exhibits defects in materials or workmanship and guaranteeing weather tight and leak free performance. "Defects" is defined as uncontrolled leakage of water and abnormal aging or deterioration. 1. Skylight Warranty: Provide written warranty signed by manufacturer, agreeing to repair or replace work, which exhibits defects in materials or workmanship and guaranteeing weather tight, and leak free performance. "Defects" is defined as uncontrolled leakage of water and abnormal aging or deterioration. 2. Warranty Period: 5 years commencing on date of invoice. C. Finish Warranty: Provide written warranty signed by manufacturer and finisher, agreeing to repair or replace work that exhibits defects in finish. "Defects" is defined as peeling, chipping, chalking, fading, abnormal aging or deterioration, and failure to perform as required. PART 2 - PRODUCTS 2.01 UNIT SKYLIGHTS A. Manufacturer Basis of Design: Naturalite Skylight Systems, The Vistawall Group. 1. Contact: P.O. Box 629, 750 Airport Road, Terrell, TX 75160; Telephone: (800) , (972) ; Fax (972) , Naturalite Type: Mount: Size: Dome: Sealed double dome (NTL) Curb Mounted on existing curbs Approximately 6-0 diameter (verify in field prior to bid) 2 layers acrylic Outer = Clear Inner = White Frosted NFRC: 0.52 Framing: 70% Kynar color by Architect HLA SCASD UNIT SKYLIGHTS

5 THE 2.02 ACCESSORIES Condensation Control: Drainage slots to carry all moisture to the outside as described on the tested units. Glazing IBC Palsun Polycarbonate ASTM E-84 Class A Classification IBC Edges Protected IBC Energy Clear glazing over white glazing. U-value 0.24 SHGC Frames Class 1 Kynar 70% Color by Architect Condensate Gutter Yes Safety Glass Heat strengthened Laminate glass with PVB binder A. Saf-T-Guard Fall Protection Screen: Fall protection screen shall be of welded wire construction using 5 gauge galvanized wire with a 4 x 4 grid pattern. Protective screens shall comply with OSHA General Industry Standards (e)(8) RELATED MATERIALS A. Related Materials: Refer to other sections listed in Related Section paragraph herein for related materials SOURCE QUALITY A. Source Quality: Obtain unit skylights from a single manufacturer. PART 3 - EXECUTION 3.01 MANUFACTURER'S INSTRUCTIONS A. Compliance: Comply with manufacturer's product data, including product technical bulletins, product catalog installation instructions and product carton instructions for installation EXAMINATION A. Site Verification of Conditions: Verify substrate conditions, which have been previously installed under other sections, are acceptable for product installation in accordance with manufacturer's instructions. 1. Take field dimensions and examine conditions of substrates, supports, and other conditions under which work is to be performed and notify Contractor, in writing, of circumstances detrimental to proper completion of work. Do not proceed with work until unsatisfactory conditions are corrected PREPARATION A. Adjacent Surfaces Protection: Protect adjacent work areas and finish surfaces from damage during product installation. HLA SCASD UNIT SKYLIGHTS

6 THE 3.04 INSTALLATION A. Unit Skylight Installation: 1. Match profiles, sizes and spacings indicated on approved shop drawings. 2. Coordinate installation with adjacent work such as roofing, sheet metal and other work to ensure creation of a complete weatherproof assembly. Anchor work securely to supporting structure, but allow for differential and thermal movement. 3. Isolate between aluminum and dissimilar metals with a protective coating or plastic strip to prevent electrolytic corrosion. B. Related Products Installation: Refer to other sections listed in Related Section paragraph herein for related products installation ADJUSTING A. Adjusting: After installation, remove shipping clips from components. Do not remove "risk-of-fall" labels from units. Touch-up and repair minor damage to eliminate all evidence of repair. Remove and replace work which cannot be satisfactorily repaired CLEANING A. Cleaning: Remove temporary coverings and protection of adjacent work areas. Repair or replace damaged installed products. Clean installed products in accordance with manufacturer's instructions prior to owner's acceptance. Remove construction debris from project site and legally dispose of debris. 1. Clean all exposed surfaces including metal and glazing using non-abrasive materials and methods recommended by manufacturer of material or product being cleaned. Remove and replace work that cannot be successfully cleaned. 2. Reclean as necessary to prevent damage. Protect completed work from damage and deterioration and inspect immediately before final acceptance of project PROTECTION A. Protection: Protect installed product and finish surfaces from damage during construction. END OF SECTION HLA SCASD UNIT SKYLIGHTS

7 1 PARTIAL ROOF DEMOLITION PLAN 1"= 20'-0" DEMOLITION KEYNOTES REMOVE EXISTING COPPER COUNTERFLASHING AND PREPARE TO RECEIVE NEW FLASHING AND MEMBRANE. GENERAL DEMOLITION NOTES ROOF PLAN LEGEND JOB #: DATE: D1

8 PHOTOGRAPH #3 PHOTOGRAPH #2 PHOTOGRAPH #1 JOB #: DATE: PHOTOGRAPH #4 PHOTOGRAPH #5 PHOTOGRAPH #6 D2

9 PHOTOGRAPH #7 PHOTOGRAPH #8 PHOTOGRAPH #9 JOB #: DATE: D3

10 1 PARTIAL ROOF PLAN 1"= 20'-0" NEW CONSTRUCTION KEYNOTES 7 NEW THRU WALL FLASHING GENERAL ROOF NOTES (1/2" INSULATION BOARD) JOB #: DATE: A1

11 1 PARAPET WALL FLASHING/COPING DETAIL 3"= 1'-0" 1/2" POLYISOCYANURATE INSULATION JOB #: DATE: A2

12 1 ROOF EDGE DETAIL 3"= 1'-0" 1/2" POLYISOCYANURATE INSULATION 2 1/2" POLYISOCYANURATE INSULATION WALL BASE FLASHING DETAIL 3"= 1'-0" JOB #: DATE: A3

13 1 ROOF TO ROOF EXPANSION JOINT DETAIL 3"= 1'-0" 1/2" POLYISOCYANURATE INSULATION JOB #: DATE: A4

14 1 SKYLIGHT REPLACEMENT DETAIL 3"= 1'-0" 1/2" POLYISOCYANURATE INSULATION JOB #: DATE: A5