19 June 2014 Architectural Railing Division C.R.Laurence Co., Inc. 2503 E Vernon Ave. Los Angeles, CA 90058 SUBJ: GRS – GLASS RAIL SYSTEM – WET GLAZED OR TAPER-LOC® SYSTEM DRY-GLAZED BASE SHOES The GRS Glass Rail System utilizes an aluminum extruded base shoe to anchor and support structural glass balustrades which support a variety of top rails and grab rails to construct guards and dividers. The glass may be installed in the base shoe using either wet glazing cement or the Taper-Loc® System Dry-Glaze as detailed in this report. The system is intended for interior and exterior weather exposed applications and is suitable for use in most natural environments. The GRS may be used for residential, commercial and industrial applications except for vehicle impacts. The GRS is designed for the following: On Cap/Top/Grab Rail: Concentrated load = 200 lbs any direction, any location Uniform load = 50 plf, any direction perpendicular to rail On In-fill Panels: Concentrated load = 50# on one sf. Distributed load = 25 psf on area of in-fill, including spaces Wind load = As stated for the application and components (ASD level) The GRS system will meet all applicable requirements of the 2012 and 2009 International Building Code and state codes adopted from them, 2010 and 2013 California Building Code, Florida Building Code, and 2012 and 2009 International Residential Code. The GRS System complies with ASTM E 2358-04 Standard Specification for the Performance of Glass in Permanent Glass Railing Systems, Guards, and Balustrades. Aluminum components are designed in accordance with the 2005 Aluminum Design Manual. Stainless steel components are designed in accordance with SEI/ASCE 8-02 Specification for the Design of Cold-Formed Stainless Steel Structural Members. Wood components are designed in accordance with the National Design Specification for Wood Construction. Glass lights are designed in accordance with AAMA CW 12-84 Structural Properties of Glass. When constructed as recommended the guards will meet the testing requirements of ICC AC 439 Acceptance Criteria for Glass Railing and Balustrade System, ASTM E-2353-06 Standard Test Methods for Performance of Glass in Permanent Glass Railing Systems, Guards and Balustrades. This report is in support of the the approval of the system in ESR-3269. 
 EDWARD C. ROBISON, PE, SE 10012 Creviston Dr NW Gig Harbor, WA 98329 253-858-0855/Fax 253-858-0856 [email protected] C.R. Laurence Glass Rail System (GRS) and Taper-Loc® 06/19/2014 Page 2! of !56 This report demonstrates the structural adequacy of the various base shoe options, mounting options and three monolithic tempered glass options. For a complete code compliant installation an appropriate cap/top rail or grab rail shall be installed, refer to the Glass Rail System Cap Rails and Grab Rails report for design information on the cap rails and grab rails. In accordance with IBC 1607.8.1 guard live loads are not to be combined with other transient loads such as wind loads. Wind loads, seismic loads and live loads may be considered separately and independently. Dead loads are to be considered when acting cumulatively with a transient load condition. For installations covered in this report dead load effects are negligible and are typically ignored. CONTENTS: Item Page Signature Page 3 Typical Installations 4 - 9 Taper-Loc® System Typ Install 10 Load Cases 11 Wind Loading 12 Glass Strength 13 – 17 Taper-Loc® Dry Glaze System 18 - 21 Base shoe B5S 22 - 27 Base shoe B5L 28 - 33 Base shoe B5T 34 Base Shoe B5A SurfaceMate 35 - 36 Base Shoe B5G Green Base Shoe 37 Base Shoe 8B Series Square Cored 38 Base Shoe B6S 39 - 41 Base shoe B7S 42 - 45 Drain Blocks 46 - 49 Weld Blocks 49 Concrete Anchor adjustments 49 Surface Mounting to Wood 50 Aluminum Angle bracket for mounting to wood. 51 - 52 Steel Angle bracket for mounting to wood. 53 Surface mounting to wood -interior only 54 Installation on Stairs 55 EDWARD C. ROBISON, PE, SE 10012 Creviston Dr NW Gig Harbor, WA 98329 253-858-0855/Fax 253-858-0856 [email protected] C.R. Laurence Glass Rail System (GRS) and Taper-Loc® 06/19/2014 Page 3! of !56 Signature Page: Signed Texas Firm # 12044 Edward C. Robison, P.E. DBA: E & L Civil Engineering 10012 Creviston DR NW Gig Harbor, WA 98329
 EDWARD C. ROBISON, PE, SE 10012 Creviston Dr NW Gig Harbor, WA 98329 253-858-0855/Fax 253-858-0856 [email protected] C.R. Laurence Glass Rail System (GRS) and Taper-Loc® 06/19/2014 Page 4! of !56 Typical Installations: Glass Taper-Loc® System or wet-glazed into base shoe. An appropriate top rail or grab rail shall be used. Residential, Commercial and Industrial Applications: ALL WIND LOADS IN THIS REPORT ARE BASED ON ASD WIND PRESSURES. SURFACE MOUNTED: Surface mounted to steel with ½” cap screws @ 12” o.c.: A 1/2” cap screw to steel 36” Height 42” Height Base Shoe Allowable wind load* B5A, B5G, B5S, B5T, 8B 75.3 psf 55.3 psf B5L 67.7 psf 49.8 psf B6S 78.9 psf 58.0 psf B7S 82.8 psf 60.9 psf Surface mounted to steel with ½” cap screws @ 6” o.c.: A 1/2” cap screw to steel 36” Height 42” Height Base Shoe Allowable wind load* B5A, B5G, B5S, B5T, 8B 150.0 psf 110.2 psf B5L 134.5 psf 98.8 psf B6S 157.2 psf 115.5 psf B7S 165.1 psf 121.3 psf *Allowable wind load may be limited by glass strength. For anchorage to concrete Surface Mounted: 3 3/8” diameter x 4” Hilti HUS-EZ (KH-EZ) in accordance with ESR-3027 or Hilti HSL-3 M8 x 3-3/4” anchor in accordance with ESR-1545. f’c = 3,000 psiB embed depth = 2.5” effective depth Concrete anchors ≥ 3.75” edge distance ABC Anchor spacing to concrete 12” O.C. Total Guard Height AFF 36” 42” Base Shoe Allowable wind load Allowable wind load B5G, B5S, B5T, 8B 42.7 psf 31.4 psf B5A 41.2 psf 30.3 psf B5L 39.0 psf 28.6 psf B6S 45.6 psf 33.5 psf B7S 47.9 psf 35.2 psf Anchor spacing to concrete 6” O.C. ABC Total Guard Height AFF 36” 42” B5G, B5S, B5T, 8B 68.6 psf 50.4 psf B5A 66.9 psf 49.2 psf B5L 61.5 psf 45.2 psf B6S 73.2 psf 53.8 psf B7S 75.7 psf 55.6 psf EDWARD C. ROBISON, PE, SE 10012 Creviston Dr NW Gig Harbor, WA 98329 253-858-0855/Fax 253-858-0856 [email protected] C.R. Laurence Glass Rail System (GRS) and Taper-Loc® 06/19/2014 Page 5! of !56 Surface Mounted Base Shoes: Concrete anchors ≥ 2.35” edge distance ABC Anchor spacing to concrete 12” O.C. Total Guard Height AFF 36” 42” Base Shoe Allowable wind load Allowable wind load B5G, B5S, B5T, 8B 35.5 psf 26.1 psf B5A 34.0 psf 25.0 psfa B5L (3.047” min edge dist) 35.4 psf 26.0 psfa B6S 37.2 psf 27.3 psf B7S 39.1 psf 28.7 psf aDoesn’t meet 50 plf live load on top rail Concrete anchors ≥ 1.75” edge distance ABC Anchor spacing to concrete 6” O.C. Total Guard Height AFF 36” 42” B5G, B5S, B5T, 8B 50.8 psf 37.3 psf B5A 49.9 psf 36.6 psf B5L 45.6 psf 33.5 psf B6S 53.3 psf 53.3 psf B7S 56.0 psf 41.1 psf B7S 2.35” edge distance 61.9 psf 45.5 psf A Linear interpolation between guard heights, anchor spacing and edge distances is permitted. BAdjustment for concrete strength other than f’ = 3,000 psi c W’ = W*√X √3,000 CAdjustment for sand light-weight concrete: W’ = 0.6*W SURFACE MOUNTED WITH DRAIN BLOCKS ON CONCRETE Concrete anchors ≥ 3.75” edge distance ABC Anchor spacing to concrete 12” O.C. Total Guard Height AFF 36” 42” Base Shoe Allowable wind load Allowable wind load B5G, B5S, B5T, 8B 41.2 psf 30.2 psf B5A 41.2 psf 30.2 psf B5L 37.0 psf 27.2 psf B6S 44.0 psf 32.3 psf B7S 50.5 psf 37.1 psf ALL WIND LOADS IN THIS REPORT ARE BASED ON ASD WIND PRESSURES. EDWARD C. ROBISON, PE, SE 10012 Creviston Dr NW Gig Harbor, WA 98329 253-858-0855/Fax 253-858-0856 [email protected] C.R. Laurence Glass Rail System (GRS) and Taper-Loc® 06/19/2014 Page 6! of !56 SURFACE MOUNTED WITH DRAIN BLOCKS ON CONCRETE Anchor spacing to concrete 6” O.C. ABC Total Guard Height AFF 36” 42” B5G, B5S, B5T, 8B 66.9 psf 49.2 psf B5A 66.9 psf 49.2 psf B5L 60.2 psf 44.2 psf B6S 71.2 psf 52.3 psf B7S 74.6 psf 54.8 psf Concrete anchors ≥ 2.35” edge distance ABC Anchor spacing to concrete 12” O.C. Total Guard Height AFF 36” 42” Base Shoe Allowable wind load Allowable wind load B5G, B5S, B5T, 8B 34.0 psf 25.0 psfa B5A 34.0 psf 25.0 psfa B5L (3.047” min edge dist) 30.6 psf 26.9 psfa B6S 36.2 psf 26.6 psf B7S 41.6 psf 30.5 psf aDoesn’t meet 50 plf live load on top rail add extra anchor per 10’ length Concrete anchors ≥ 2.35” edge distance ABC Anchor spacing to concrete 6” O.C. Total Guard Height 42” above finish floor. B5G, B5S, B5T, 8B 55.0 psf 40.4 psf B5A 55.0 psf 40.4 psf B5L 49.5 psf 36.4 psf B6S 58.4 psf 42.9 psf B7S 61.2 psf 45.0 psf A Linear interpolation between guard heights, anchor spacing and edge distances is permitted. BAdjustment for concrete strength other than f’ = 3,000 psi c W’ = W*√X √3,000 CAdjustment for sand light-weight concrete: W’ = 0.6*W ALL WIND LOADS IN THIS REPORT ARE BASED ON ASD WIND PRESSURES.
 EDWARD C. ROBISON, PE, SE 10012 Creviston Dr NW Gig Harbor, WA 98329 253-858-0855/Fax 253-858-0856 [email protected] C.R. Laurence Glass Rail System (GRS) and Taper-Loc® 06/19/2014 Page 7! of !56 FASCIA (SIDE) MOUNTED BASE SHOE Fascia mounted to steel with ½” cap screws @ 12” o.c.: 1/2” cap screw to steel 36” Height 42” Height Base Shoe Allowable wind load* B5A, B5G, B5S, 8B 68.7 psf 51.2 psf B5L 47.5 psf 35.3 psf B6S 68.7 psf 51.2 psf B7S 68.7 psf 51.2 psf Fascia mounted to steel with ½” cap screws @ 6” o.c.: 1/2” cap screw to steel 36” Height 42” Height Base Shoe Allowable wind load* B5A, B5G, B5S, 8B 138.2 psf 103.0 psf B5L 95.6 psf 71.2 psf B6S 138.2 psf 103.0 psf B7S 138.2 psf 103.0 psf *Allowable wind load may be limited by glass strength. Height is from top of base shoe to top of rail. For anchorage to concrete: 3/8” diameter x 4” Hilti HUS-EZ (KH-EZ) in accordance with ESR-3027 or Hilti HSL-3 M8 x 3-3/4” anchor in accordance with ESR-1545. f’c = 3,000 psi embed depth = 2.5” effective depth Fascia Mounted Concrete anchors edge distance ≥ ½ base shoe height Anchor spacing to concrete 12” O.C. Total Guard Height AFF 36” 42” Base Shoe Allowable wind load Allowable wind load B5A, B5G, B5S, 8B 49.7 psf 37.0 psf B5L 42.0 psf 31.2 psf B6S 49.7 psf 37.0 psf B7S 49.7 psf 37.0 psf Anchor spacing to concrete 6” O.C. Total Guard Height 42” above finish floor. B5A, B5G, B5S, 8B 77.1 psf 57.5 psf B5L 51.0 psf 37.9 B6S 77.1 psf 57.5 psf B7S 77.1 psf 57.5 psf Height is from top of base shoe to top of rail. ALL WIND LOADS IN THIS REPORT ARE BASED ON ASD WIND PRESSURES.
 EDWARD C. ROBISON, PE, SE 10012 Creviston Dr NW Gig Harbor, WA 98329 253-858-0855/Fax 253-858-0856 [email protected] C.R. Laurence Glass Rail System (GRS) and Taper-Loc® 06/19/2014 Page 8! of !56 Fascia Mounted To wood with ½” lag screws with 2.37” minimum embedment to wood G ≥ 0.49 Anchor spacing 12” O.C. Interior or Dry locations mc ≤ 19% Total Guard Height AFF 36” 42” Base Shoe Allowable wind load Allowable wind load B5A, B5G, B5S, 8B 48.7 psf 36.3 psf B5L 41.4 psf 30.8 B6S 48.7 psf 36.3 psf B7S 48.7 psf 36.3 psf Anchor spacing 6” O.C. Total Guard Height AFF 36” 42” B5A, B5G, B5S, 8B 92.6 psf 69.0 psf B5L 77.8 psf 57.9 psf B6S 92.6 psf 69.0 psf B7S 92.6 psf 69.0 psf Anchor spacing 12” O.C. Exterior or wet locations where mc ≥ 19% Total Guard Height AFF 36” 42” Base Shoe Allowable wind load Allowable wind load B5A, B5G, B5S, 8B 34.5 psf 25.7 psf B5L 29.4 psf 21.9 B6S 34.5 psf 25.7 psf B7S 34.5 psf 25.7 psf Anchor spacing to 6” O.C. Total Guard Height AFF 36” 42” B5A, B5G, B5S, 8B 66.9 psf 49.9 psf B5L 56.8 psf 42.2 psf B6S 66.9 psf 49.9 psf B7S 66.9 psf 49.9 psf Height is from top of base shoe to top of rail. ALL WIND LOADS IN THIS REPORT ARE BASED ON ASD WIND PRESSURES.
 EDWARD C. ROBISON, PE, SE 10012 Creviston Dr NW Gig Harbor, WA 98329 253-858-0855/Fax 253-858-0856 [email protected] C.R. Laurence Glass Rail System (GRS) and Taper-Loc® 06/19/2014 Page 9! of !56 Surface mounted to wood Refer to Surface Mounting Base Shoes to Wood Decks section of this report. Embedded base shoe: All base shoes: Glass strength controls for all cases when base shoes are properly embedded into concrete. OTHER GLASS HEIGHTS: The allowable wind loads may be adjusted for other light heights by: W’ = W *422 42 H 2 g Where H = total guard height measured from bottom of base shoe to top of cap rail in g inches. ALLOWABLE LOADS ON GLASS Glass thickness Allowable wind load 36” Guard Height 42” Guard Height 1/2” 71.1 psf 52.2 psf 5/8” 114.4 psf 84.1 psf 3/4” 167.1 psf 122.8 psf MINIMUM RECOMMENDED GLASS LIGHT WIDTH Glass thickness 36” Guard Height 42” Guard Height 1/2” 2‘- 6” 2’- 10.5” 5/8” 1’- 7” 1’- 10” 3/4” 1’- 0” 1’- 3” Glass thickness shall be selected as required to achieve the required wind load. For guard installations using monolithic tempered glass a cap/top rail or grab rail shall be installed supported by a minimum of 3 glass lights or otherwise supported so as to remain in place in the event of any single glass light failure. Linear interpolation of all tables is permitted. ALL WIND LOADS IN THIS REPORT ARE BASED ON ASD WIND PRESSURES. If using wind loads calculated per ASCE/SEI 7-10 the strength level wind loads must be adjusted by multiplying by 0.6 per ASCE/SEI 7-10 section 2.4 load combinations and IBC 1605.3.1.
 EDWARD C. ROBISON, PE, SE 10012 Creviston Dr NW Gig Harbor, WA 98329 253-858-0855/Fax 253-858-0856 [email protected] C.R. Laurence Glass Rail System (GRS) and Taper-Loc® 06/19/2014 Page 1! 0 of !56 Taper-Loc® System Typical Installation � For 1/2” Fully Tempered Glass maximum glass light height = 42”: Edge Distance: 2” ≤ A ≤ 8 5/8”; 51mm ≤ A ≤ 219mm Center to center spacing: 7” ≤ B ≤ 14”: 178mm ≤ B ≤ 356mm Panel Width/Required quantity of Taper-Loc® Plates: 6” to 14” (152 to 356mm) 1 TL Plate 14” to 28" (356 to 711 mm)   2 TL Plates 28" to 42" (711 to 1,067 mm)   3 TL Plates 42" to 56" (1,067 to 1,422 mm)  4 TL Plates 56" to 70" (1,422 to 1,778 mm)  5 TL Plates 70" to 84" (1,778 to 2,134 mm)  6 TL Plates 84” to 96” (2,134 to 2,438 mm) 7 TL Plates Minimum Glass Light Width = 6” when top rail/guardrail is continuous, welded corners or attached to additional supports at rail ends. NOTES: 1. For glass light heights over 42” A and B shall be reduced proportionally. max max A = 8 5/8*(42/h) max B = 14*(42/h) max 2. For glass light heights under 42” A and B shall not be increased. max max 3. A and B are for ease of installation and can be further reduced as long as proper min min installation is achieved. 4. For glass thicknesses greater than 1/2” A and B may be increased as follows: max max 5/8” Glass Edge Distance: 2” ≤ A ≤ 13.5” Center to center spacing: 7” ≤ B ≤ 21” 3/4” Glass Edge Distance: 2” ≤ A ≤ 19” Center to center spacing: 7” ≤ B ≤ 31” EDWARD C. ROBISON, PE, SE 10012 Creviston Dr NW Gig Harbor, WA 98329 253-858-0855/Fax 253-858-0856 [email protected]