DiSorb Diffuser Product Specifications PART 1 - GENERAL 1.01 SUMMARY A. This section includes Sound Diffuser-Absorbers for Ceilings and/or Walls. Types include: 1.02 RELATED SECTIONS 1. DiSorb Diffuser-Absorber, Type A 2. DiSorb Diffuser-Absorber, Type B 3. DiSorb Diffuser-Absorber, Type C 4. DiSorb Diffuser-Absorber, Type D 5. DiSorb Diffuser-Absorber, Type W A. Division 09 - "Interactive Acoustical Panel System." B. Division 13 Sections Fire Suppression C. Division 15 Sections Mechanical Work D. Division 16 Sections Electrical Work E. Division 17 Sections Audio, Data, Telecommunication Work 1.03 REFERENCES A. Local Building Code Current Edition B. International Organization for Standardization 1. ISO 354 Measurement of Sound Absorption in a Reverberation Room 2. ISO 17497-1 Sound-scattering properties of surfaces- Part 1: Measurement of the randomincidence scattering coefficient in a reverberation room. C. AES-4id-2001: AES Information Document for Room Acoustics & Sound Reinforcement Systems Characterization & Measurement of Surface Scattering Uniformity. D. American Society for Testing & Materials (ASTM) 1.04 SUBMITTALS 1. ASTM E 1050-98 - Standard Test Method for Impedance and Absorption of Acoustical Materials Using a Tube, Two Microphones, and a Digital Frequency Analysis System 2. ASTM C 423 - Sound Absorption & Sound Absorption Coefficients by the Reverberation Room Method 3. ASTM E 84: Standard Test Method for Surface Burning Characteristics of Building Materials A. Submit listed submittals in accordance with Conditions of the Contract and Division 1 Submittal Procedures Section. B. Product Data: Submit product data sheet for specified products.
C. Submit manufacturer s installation instructions. D. Shop Drawings: Submit shop drawings showing layout, edge profiles and panel components, including mounting hardware, accessories, finish colors and textures. E. Samples: Submit selection and verification samples of finishes, colors and textures. F. Test Reports: Submit test reports showing compliance with specified performance specifications and requirements. G. Submit samples to the Architect and Acoustic Consultant the following: 1. For initial selection: See herein, and/or material schedule on drawings 2. For fabric-wrapped products: supply representative panel with suspension system and edge detail 3. For fabric-wrapped products: supply full range selection chart of standard colors 4. For Verification: Supply to the project site a full-size panel of each type with the selected color and finish for verification by the architect. H. Alternates and Prior Approval: Proposed substitutions for products in this section may be submitted to the architect and acoustical consultant no later than ten (10) working days prior to the bid due date. Substitutions shall only be considered if submitted with complete information including acoustic data and a full size sample showing product design, composition, size and finish. Acceptance of substituted products is contingent on the architect s and acoustical consultant s approval and the substitution s compliance with all specified criteria, Including but not limited to, the following: Single source materials suppliers; Panel design, size, composition, color, and finish; suspension and fastener systems, components, profiles and sizes; compliance with the referenced standards. The architect shall approve substitution requests via an addendum. If included in a Bid are substitute products which have not been approved by Addenda, the specified products shall be provided without additional compensation. I. Unapproved Substitutions. Substitutions not approved via addendum shall not be submitted to the architect or acoustical consultant. 1.05 REFERENCES A. Local Building Code Current Edition B. International Organization for Standardization 1. ISO 354 Measurement of Sound Absorption in a Reverberation Room 2. ISO 17497-1 Sound-scattering properties of surfaces- Part 1: Measurement of the randomincidence scattering coefficient in a reverberation room. C. AES-4id-2001: AES Information Document for Room Acoustics & Sound Reinforcement Systems Characterization & Measurement of Surface Scattering Uniformity.
D. American Society for Testing & Materials (ASTM) 1.06 SYSTEM DESCRIPTION 1. ASTM C 423 - Sound Absorption & Sound Absorption Coefficients by the Reverberation Room Method 2. ASTM E 84: Standard Test Method for Surface Burning Characteristics of Building Materials A. Design Requirements Diffuser-Absorbers shall have a convex face to diffuse sound and absorb lowfrequency energy. B. Performance Requirements. 1. Sound Transmission Class (STC), determined according to ASTM E90 and ASTM E413: Ceiling Diffuser-Absorber Panels; STC 23. 2. Third-octave band acoustical performance requirements from 100 Hz to 4000 Hz for random incidence sound absorption shall be measured according to ASTM C423 or ISO 354; the normalized random incidence diffusion coefficient shall be the average of measured or calculated directional diffusion coefficients, according to AES-4id-2001 at - 60, -30, 0, 30, and 60 degrees and the random incidence scattering coefficient shall be measured according to ISO- 17497-1 (Scattering (ISO)) or determined from the average of the measured directional correlation scattering coefficients (Scattering (c)) according to the method of Mommertz [Reference 1.05/E1 and 1.05/E3]. The random incidence coefficients shall be what are indicated in the tables below: Product / Diffusion 125Hz 250Hz 500Hz 1000Hz 2000Hz 4000Hz 8000Hz DiSorb Type A.33.33.33.33.32.32.32 DiSorb Type B.30.30.30.30.30.30.30 DiSorb Type C.30.30.30.30.31.30.30 DiSorb Type D.30.30.30.30.30.30.30 DiSorb Type W.27.27.27.27.27.27.27 Product / Absorption 125Hz 250Hz 500Hz 1000Hz 2000Hz 4000Hz NRC DiSorb Type A.80.54.34.23.11.00.30 DiSorb Type B.81.64.55.46.39.38.50 DiSorb Type C.69.59.34.25.16.19.35 DiSorb Type D.14.12.09.07.07.05.10 DiSorb Type W.18.20.12.07.07.05.10
1.07 QUALITY ASSURANCE A. Surface Burning Characteristics (ASTM E-84) Full product assembly, when tested by and accredited facility shall exhibit a Composite Flame Spread Rating of 25 or less, and Smoke Developed Rating of no more than 450 B. Single-Source Responsibility: Provide sound diffusers and method of attachment by a single manufacturer. C. Coordination of Work: Coordinate sound diffuser work with installers of related work including, but not limited to suspended ceilings, building insulation, gypsum board, light fixtures, mechanical systems, electrical systems, and sprinklers. D. Sound diffusers, as with other architectural features located on walls and in the ceiling plane, may obstruct or skew the existing or planned fire sprinkler water distribution pattern, or possibly delay the activation of the fire sprinkler or fire detection system. Designers and installers are advised to consult a fire protection engineer, NFPA 13, and their local codes for guidance on the proper installation techniques where fire detection or suppression systems are present. 1.08 DELIVERY, STORAGE & HANDLING A. General: Comply with Division 1 Product Requirements Section. B. Delivery: Deliver materials in manufacturer s original, unopened, undamaged containers with identification labels intact. Products are fragile and must be removed from packaging with care and handled accordingly. C. Storage and Protection: Store materials protected from exposure to harmful environmental conditions and at temperature and humidity conditions recommended by the manufacturer. D. Prior to installation, permit unpackaged products to reach room temperature and a stabilized moisture content with the manufacturer s guidelines. E. Acceptance at site: Installation constitutes complete acceptance by installing contractor. F. Waste Management and Disposal: Dispose of all packaging materials and debris in a safe and environmentally responsible manner according to the instructions set forth by the General Contractor, local ordinances or codes and the Environmental Protection Agency. 1.09 PROJECT CONDITIONS 1.10 WARRANTY A. Environmental Requirements: Building areas to receive products for installation shall be free of construction dust and debris. Do not deliver, unpack or install products until wet work, such as concrete and plastering, is complete and dry; the building is enclosed; and the temperature and relative humidity are stabilized at 60-80 degrees F (16-27 degrees C) and 40% to 50%, respectively. A. Submit to Owner or Owner s Representative a written and dated warranty issued by the products manufacturer warranting the products against defects in materials or manufacturing for a period of one (1) year from the date of delivery.
B. Components used in the system but not provided by the manufacturer are excluded from the manufacturer s warranty. Damage caused by exposure to moisture or rapid or extreme changes to temperature or humidity are excluded from the manufacturer s warranty. Damage caused by improper storage, handling, acclimatization, or installation is excluded from the warranty. PART 2 - PRODUCTS 2.01 MANUFACTURERS A. Basis of Design: ; Phone: 800-228-7842; Fax: 352-854-1278 Email: info@avlonline.com; Website: www.avlonline.com 2.02 MANUFACTURED UNITS A. Sound Diffuser Absorber 2.03 ACCESSORIES 1. Composition: Fiber Reinforced Polymers (FRP) 2. Surface Finish: (Gel coat) (Fabric) 3. Surface Texture: (Light texture), (Fabric) 4. Color: (White) (FR701 selection) 5. Shapes, nominal: (2 ft x 2 ft) (2 ft x 3 ft) (2 ft x 4 ft) (2 ft x 6ft) (4 ft x 2 ft) (4 ft x 3 ft) (4 ft x 4 ft) (4 ft x 6 ft) (4 ft x 8 ft) 6. Thickness: 4-3/8 and 7-3/8, nominal sizes 7. Flame Spread: (ASTM E 84) Class A 8. Antimicrobial protection: Inherent Resists growth of mold, mildew and bacterial growth. 9. Ceiling suspension: Units shall be compatible with 15/16 heavy duty T-bar ceiling grids and are supported in a tegular mount. 10. Wall mounting: Panels shall be mounted with panel clips, wall clips or as recommended by the manufacturer and as directed by Architect. 11. Acceptable Manufacturers:, Phone 1-800-228-7842, www.avlonline.com. A. Mounting Hardware: Manufacturers standard 1. Manufacturer shall furnish mounting clips and wall channel brackets for wall-mounting. 2. Manufacturer shall furnish supports and hooks for wire suspension of ceiling panels.
PART 3 EXECUTION 3.01 INSTALLERS 3.02 PREPARATION 3.03 INSTALLATION A. Installing contractor shall have a minimum of five (5) years successful experience installing ceiling and wall systems in similar applications using similar mounting techniques or suspensions systems. A. Site Verification of Conditions: Examine installation area for compliance with all manufacturers project environmental requirements and ensure uninstalled products have been stored, handled and acclimatized properly prior to commencing installation. Inspect all substrates for completion and quality of work to ensure that surfaces are level, plumb, clean, dry and completely cured from water or solvent evaporation. Do not commence installation if the structural capacity of the substrate is questionable or inadequate. B. Coordination with Other Trades: Coordinate with all other trades to ensure that wet work including concrete, terrazzo, plastering, painting, etc. in the installation area is complete, cured and dry prior to installation. Coordinate with all other trades to verify that components associated with mechanical, electrical, lighting, data, telecommunication, audio, video, fire suppression and other building systems are installed behind or above designated installation areas prior to commencing installation. Coordinate the exact size, location and sequencing of building system components that penetrate the ceiling/wall panels. C. Protection: Protect all floor, wall and ceiling finishes against possible damage prior to commencing installation and during installation. D. Surface Preparation: When necessary, field measure substrates to acquire accurate dimensions of panels and submit final dimensions to manufacturer. E. Measure each area and establish layout of products and installation hardware. Comply with reflected ceiling plans and elevations approved by others. Coordinate product layout with mechanical, electrical and sprinkler installation and their installers. F. The installing contractor shall examine all mounting surfaces and areas, and report all unsatisfactory conditions in writing to the General Contract and Architect. The work shall not proceed until unsatisfactory conditions are corrected. A. Install products where indicated on the drawings and in the thickness and finish indicated on the drawings and documents in accordance with the manufacturer s instructions and in compliance with the authorities having jurisdiction. B. Interface with Other Work: Support all light fixtures, HVAC air inlet/outlet devices, speakers, signage, sprinkler heads/piping, etc. independently from products. Contractor shall not use products to support the weight of any other building element or component. C. Interface with Other Work: Support all light fixtures, HVAC air inlet/outlet devices, speakers, signage, sprinkler heads/piping, etc. independently from panels. Contractor shall not use panels to support the weight of any other building element or component.
3.03 ADJUSTING & CLEANING A. Following initial installation, adjust mounting hardware or suspension system so that any removable panels can be removed easily, yet stay safely secured upon replacement. Adjust panels so that surfaces are aligned, flush and level or plumb and gaps in between units are of a consistent width and straight. B. Remove dust from surfaces and penetrations by vacuuming using only a soft brush. Do not scratch surfaces with sharp metal or plastic vacuum cleaner extensions. Remove pencil marks with soft erasure. Remove general surface dirt with a clean, soft cloth dampened with a diluted, mild, cleaning agent and warm water. Wipe again with clean, soft cloth dampened only with warm water. Finally, dry surface completely with clean, dry cloth. Do not use abrasive cleaners with grit or cloths that could scratch the finish. C. Remove and replace at no extra charge any damaged panels that cannot be repaired to the Owner s and Architect s satisfaction D. All work shall be complete in every detail, and the finished work shall be clean and adjusted for the Architect prior to final acceptance. E. Upon completion of work, protect installed surfaces from damage or soiling until project substantial completion and owner occupancy. END OF SECTION