1.1              RELATED DOCUMENTS


A.                 The requirements of the GENERAL CONDITIONS, SUPPLEMENTARY CONDITIONS, and DIVISION I, GENERAL REQUIRMENTS, apply to the work of this SECTION.


1.2              SCOPE OF WORK


Furnish all labor, materials, equipment, and services necessary for the installation of a preformed metal wall panel system, complete and weather tight.  Work shall include but not be limited to panels, stiffeners, fasteners, and weather seals required for a complete installation of panels to the support system provided for this scope of work.




A.                 Furnish and install a preformed, prefinished composite wall panel system

B.                 Accessory items such as panel subgirt system, clips, flashings, sealants, and gaskets.




A.                 Miscellaneous steel

B.                 Metal stud framing/sheathing

C.                 Curtainwall, Windows, Glass and Glazing




A.                 The 4mm zinc composite metal panel system, complete with required stiffeners and internal weather seals shall meet the specified requirements for air infiltration, water penetration, and seismic/structural performance as specified and per building codes.

B.                 The 4mm composite panel shall have a current ICBO Report for composite panel material.

C.                 The panels system shall be hard fastened so that panels are secure, yet able to accommodate movement from thermal expansion and contraction without buckling or causing undue stress on panel fasteners.

D.                 Panel system joints shall have a finished aluminum extrusion with extruded EPDM or Neoprene rubber gaskets used as concealed weather seals, and an internal weep system at each horizontal joint.  Horizontal extrusion shall be continuous to eliminate 4-way sealant joint at intersections.





A.                 Preformed metal wall panel system shall meet or exceed all of the following minimum performance standards identified within this Section.

B.                 Metal panel system shall be designed by manufacturer so that attachment allows panels to successfully accommodate seismic and thermal movement without causing “oil-canning”, undue stress on fasteners, or failure of weather seals.

C.                 Structural Performance:  Maximum allowable deflection of the panel system shall be L/120.  Mid-spans may deflect beyond but shall return to original plane when loads are removed.

D.                 Air Infiltration:  Air infiltration of panel system shall not exceed 0.06 cfm/sq.ft. when tested under static pressure of 6.24 PSF per ASTM E-283.

E.                  Water Penetration:  Panel system shall have no uncontrolled water penetration through panel system when tested at a static pressure of 15 PSF per ASTM E-331.


1.7              QUALITY ASSURANCE


A.                 Manufacturer Qualifications:  Manufacturer shall have a minimum of (5) years experience in the design and manufacturing of preformed metal wall panel systems and shall have a minimum of (3) projects of similar size and scope of this project, utilizing this type of dry-joint composite panel system.

B.                 Single Source Quality Control:  Metal panel system manufacturer shall provide all design, engineering, panel fabrication, and assembly of panel system in manufacturing facility.

C.                 Installer Qualifications:  Installer shall have a minimum of (5) years experience in the installation of the specified panel system type, and shall be an authorized installer of the preformed metal panel system manufacturer.

D.                 Metal Panel System Tolerances:

a.       Maximum panel bow shall not exceed 2% of panel dimensions in width or length, with an overall maximum tolerance of .1875” within panel face.

b.      Face of panel shall not vary in plane to any adjacent panel greater that 1/16”.

c.       Maximum 1/32” between mitered panel extrusions.


1.8              SUBMITTALS


A.                 Manufacturer’s Certification:  Submit written certification that metal panel system manufacturer has a minimum of (5) years experience in the design, engineering, and manufacturing of the type of panel system specified.  Submit (3) reference projects of similar size and scope utilizing the specified type of panel system.

B.                 Samples:  Submit physical samples as follows

a.       (4) 12” square panels mounted with specified system attachments, zinc finish for composite panel and paint for perimeter extrusions

b.      (2) 12” samples of each perimeter extrusion to be used

c.       (6) zinc samples from composite panel manufacturer and paint applicator for perimeter extrusion

d.      (2) 12” samples of extruded internal system gaskets

e.       (6) standard color charts for specified silicone sealant manufacturer


C.                 Shop Drawings:  Submit complete metal panel system shop drawings with keyed plans, elevations, and sections.  Specific details shall be included for all panel conditions and all interfaces with all other exterior wall systems.  Included coordinated details from shop drawings for other exterior wall systems.  Drawings shall also indicate method of attachment, location of internal stiffeners and weather seals, and drainage method for perimeter extrusion system.

D.                 Structural Calculations:  Submit structural calculations for the design and performance of the metal panel system, including specified and building code windloads, deflections, in-place stresses, and capacity of fasteners.  Calculations and submittal drawings shall be stamped by a Professional Engineer licensed in the State Of California.

E.                  Sealant Adhesion Testing:  Submit sealant manufacturer’s adhesion test results and recommendations for surface preparation to zinc and paint finishes.






A.        CSP-900 Rout & Return Dry-Joint Zinc Composite Panel System as manufactured by CSP Architectural Metals.

B.         Additional manufacturers may be submitted for prior approval before the bid date.  At the sole discretion of the Architect, systems may be approved if they satisfy all of the requirements of the Design and Performance Criteria and Quality Assurance sections of this specification.


2.2              MATERIALS:


A.                 Composite Panels:  Fabricate panels from 4mm Reynobond zinc composite panels as manufactured by ALCOA Cladding.  Composite panel core shall have fire-rated core per ICBO Evaluation Report.

B.                 Radiused Panels:  Where indicated on drawings provide radiused panels rolled to specified radius with formed returns and flanges indicated on drawings and required for attachment to support system.

C.                 Panels shall have formed returns inserted into continuous perimeter extrusion, sealed, reinforced, and adhered to panel with structural silicone sealant.

D.                 Metal Panel Subgirt System:  Where required, provide 16 gauge-galvanized profile as subgirt system for panel attachment. 

E.                  Fasteners:  Subgirt and panel fasteners shall be ELCO Drillflex with stalgard finish.  Size and spacing shall be as required by structural calculations.

F.                  Perimeter Extrusions:  Provide extruded aluminum profiles painted to match composite panels or as selected by Architect.

G.                 Weather seals:  Provide silicone sealant at all panel-to-panel joints and panel system perimeter joints.  Sealant shall be Dow Corning 795 silicone sealant.  Install silicone sealant in accordance with manufacturer’s recommendations, including proper joint backing, and surface preparation recommendations.  Sealant manufacturer shall provide standard (20) year warranty.

H.                 Concealed Weather seal Gaskets:  Provide extruded EPDM gaskets for use as internal weather seals.




3.1              FABRICATION


A.                 Fabricate panels to sizes and configurations as indicated on drawings.  All panel joints shall occur exactly where indicated on drawings.

B.                 Panels shall be formed, with perimeter extrusions applied with silicone sealant and mechanical screw attachment.

C.                 Panel stiffeners required for flatness and deflection shall be applied to the panel with structural silicone and compatible glazing tape.

D.                 Field fabrication of composite panels is not permitted.


3.2              INSTALLATION

A.                 Panel system installer shall be authorized by the metal panel system manufacturer and familiar with the specific details required for this project.

B.                 Provide at least (1) person to be present at all times who is capable of providing layout for the metal panel system.   Notify Contractor of any dimensional discrepancies that may affect panel system installation.

C.                 Install metal panel system in accordance with the approved shop drawings for the project.

D.                 Install panel system to subgirt system with specified fasteners and within specified tolerances for joinery, level, and plumb.

a.       Maximum offset from true alignment of adjacent panels installed butting or in line shall by 1/16”.

b.      Panel to panel joints shall not vary greater than 1/16” of the joint size indicated on drawings.

E.                  Install silicone sealant with proper joint backing.  Upon installation, embed extruded silicone gasket into uncured silicone sealant.  Recess silicone gasket to depth indicated on drawings.  Miter gasket at panel corners and butt tight at 4-way intersections.