Pittsburgh Corning Pittsburgh, PA 15239-2799 Tel: (800) 992-5769 Tel: (724) 327-6100 Fax: (724) 327-5890 Web site: http://www.pittsburghcorning.com THICKSET® Block, DECORA® Pattern Pittsburgh Corning Glass Block Products Physical & Design Data Installed Panel Weight. Panels of Pittsburgh Corning Glass Block products in the Premiere Series weigh approximately 20 lbs./sq. ft. installed; THICKSET® Block panels weigh approximately 30 lbs./sq. ft. installed; VISTABRIK® Solid Glass Block panels weigh approximately 40 lbs./sq. ft. installed. Local building codes should be checked for any limits on panel sizes or installation details. Non-load Bearing. Glass block panels are non-load bearing; adequate provision must be made for support of construction above these panels. Panels are mortared at the sill, with jamb and head details designed to provide for building movement and lintel deflection. Detailed Drawings. Structural members illustrated on CAD drawings indicate principles of construction. Member size should be determined by structural analysis to avoid excessive deflections. Maximum deflection should not exceed L/600. Premiere Series. All glass block illustrated on CAD drawings are Premiere Series Glass Block units. Modify as necessary for VISTABRIK® Solid Glass Block. Fire Resistance THICKSET® and VISTABRIK® Solid Glass Block are all listed for use as 45-, 60- or 90-minute fire-rated window assemblies in panels up to 100 sq. ft. Refer to the latest issue of UL® Building Materials Directory as well as your local building codes. - Underwriters Laboratories® Classification: R2556 (for Glass Block) For additional information, ask for Pittsburgh Corning’s "Glass Block Fire Rating Facts" bulletin. Fire-Rated Glass Block Window Assemblies Where permitted by Building Codes, glass block fire-rated window assemblies having a fire resistance rating of not less than 45 minutes may be used as "opening protectives" and to not exceed 25% of the wall areas separating a tenancy from a corridor or a corridor from an enclosed vertical opening or one fire-rated area from another fire-rated area. Exception: Although glass block masonry units have been tested as window assemblies (not wall assemblies), they may be used as a one-hour fire partition as required for corridors in the enclosure of atriums only when sprinkler protection is provided on occupied sides. 45- and 60-Minute Rated Construction: All 45- and 60-minute rated Pittsburgh Corning Glass Block products may be used in both masonry and non-masonry (steel or wood stud gypsum board) walls. These rated glass block windows may be framed and anchored with either PC® Panel Anchor construction or channel-type restraints. The use of a fire retardant type sealant for head and jamb locations is required. Specifications and construction details of such panels are as per Pittsburgh Corning Corporation recommendations. Non-masonry, fire-rated steel stud/gypsum board walls must conform to UL® listed wall assembly #U465. Framing and support of the rated glass block window assembly shall be provided with double-studding with height of supporting wall limited to no more than 3 feet. 90-Minute Rated Construction: Where permitted by building codes, all 90-minute rated Pittsburgh Corning Glass Block products may be used in masonry walls only; framed and anchored with 1/4 in. thick steel (not aluminum) channel-type restraints or masonry chases. The use of panel anchor construction is not permitted. Specifications and construction details of such panels are as per Pittsburgh Corning Corporation recommendations. Exception: In 90-minute rated glass block window assemblies, twice the thickness (3/4 in. total) of expansion material is required at head and jamb locations, as well as the use of a fire-retardant type sealant. 45-Minute Rated Curved Construction: The glass blocks noted under 90-minute "rating" and those 8" x 8" x 4" sized glass blocks noted under 45-minute "rating" are classified for use in masonry walls as curved window assemblies provided that the maximum allowable curvature does not exceed a ratio of 2:1 with respect to length of radius to length of assembly width. Pittsburgh Corning Glass Blocks that are not fire-rated:
Refer to the latest issue of UL® Building Materials Directory as well as your local building codes and officials. City and State Code Approvals: Building Code and National Standards References: Seismic Forces Design Resistance to Surface Condensation Wind Load Resistance Curved Panel Construction It is recommended that curved areas be separated from flat areas by intermediate expansion joints and supports as shown on these CAD drawings. When straight, ladder type reinforcing is used on curved walls, the innermost parallel wire may be cut periodically and bent to accommodate the curvature of the wall. Maximum Panel Dimensions Mortar Mix Design By Volume (Weight): Number of Block for 100 Sq. Ft. Panel Cu. Ft. of Mortar for 100 Sq. Ft. Panel Premiere Series (4" nom. thick) VISTABRIK® (3" actual thick - using 3/8" exposed mortar joints) THINLINE Series (3" nom. thick) |