Trosifol. SentryGlas Interlayers- 20 Years of Transforming Glass Facade Design. ZAK World of Facades-Bangkok. March 2018

Transcription

1 SentryGlas Interlayers- 20 Years of Transforming Glass Facade Design ZAK World of Facades-Bangkok Trosifol March 2018

2 1992 the Story Begins 1992 Hurricane Andrew Hits Homestead as a Category 5 Hurricane with winds gust of 270 KPH $26 billion in damage Most of the damage was caused by the very high winds Improvements to Glazing System Design Could Have Prevented Much of the Damage Seen March 15, 2018 Trosifol Business 2

3 Effect of Hurricane Andrew Many insurance companies left the state of Florida Miami Dade County developed new performance requirements for windows, doors, storefronts, curtain walls, and skylights, as well as storm shutters based on testing Certification program adopted to qualify systems March 15, 2018 Trosifol Business 3

4 Impact Glazing Requirements in Florida ASTM D1996-Impact and ASTM D1886-Cycling Levels of Protection and Impact Test Requirements Level of Protection Assembly elevation Wind Zone 1 49 m/s (110 mph) basic wind speed < 54 m/s (120 mph) Wind Zone 2 54 m/s (120 mph) basic wind speed < 58 m/s (130 mph) at greater than 1.6 km (one mile) from the coastline Wind Zone 3 58 m/s (130 mph) basic wind speed 63 m/s (140 mph), or 54 m/s (120 mph) basic wind speed 63 m/s (140 mph) and within 1.6 km (one mile) of the coastline Wind Zone 4 basic wind speed > 63 m/s (140 mph) Basic Protection 9.1 m > 9.1 m (30 ft) (30 ft) Enhanced protection 9.1 m (30 ft) > 9.1 m (30 ft) C A D D C A D D D A E D D A E D Loading Sequence Cyclic Static Pressure Differential Loading Loading Direction Air Pressure Cycles N. of Air Pressure Cycles 1 Positive 0.2 P Ppos Positive 0.0 P Ppos Positive 0.5 P Ppos Positive 0.3 P Ppos Negative 0.3 P Pneg 50 6 Negative 0.5 P Pneg Negative 0. 0 P Pneg 50 8 Negative 0.2 P Pneg 3350 Cycling pressure used is determined by design pressure of the building for the maximum inward (Ppos) and maximum outward (Pneg) air pressure differential for which qualification is sought. Applicable Missiles Missile Level Missile Impact Speed A 2 g (31 grains) ± 5 % steel ball m/s (130 f/s) C 2050 g ± 100 g (4.5 lb ± 0.25 lb) 2 x 4 in.; 1.2 m ± 100 mm (4 ft. ± 4 in.) lumber m/s (40 f/s) D 4100 g ± 100 g (9.0 lb ± 0.25 lb) 2 x 4 in.; 2.4 m ± 100 mm (8 ft. ± 4 in.) lumber m/s (50 f/s) E 4100 g ± 100 g (9.0 lb ± 0.25 lb) 2 x 4 in.; 2.4 m ± 100 mm (8 ft. ± 4 in.) lumber m/s (80 f/s) Glazing System Must Pass Both Impact and Cycling After Impact March 15, 2018 Trosifol Business 4

5 What is Impact Glazing Laminated Glass Two or more lites of glass and one or more interlayers Glass retention if breakage occurs Types of laminated glass Polyvinyl butyral (PVB) Ionoplast Laminated Glass Glass Interlayer Glass Typical Constructions 6 mm HS Glass/ 2.28 mm interlayer/ 6 mm HS Glass for Large Missile impact 6 mm HS Glass/1.52 mm or 0.89 mm interlayer/ 6 mm HS Glass for Small Missile Impact

6 1998 SentryGlas Introduced to the Hurricane Glazing Impact Market High modulus interlayer 100 x stiffer and 5x more tear resistant than PVB Designed to meet the highest requirements of impact and system design pressure-hvhz ( High Velocity Hurricane Zone) High modulus enables the use of dry glaze systems Lower system cost Superior edge stability- Excellent for open edge applications March 15, 2018 Trosifol Business 6

7 One of the First Buildings to Use SentryGlas Bell South Tower Sunrise Florida-2003 Today 2018 Exceptionally Durability March 15, 2018 Trosifol Business 7

8 Hurricane impact glazing systems have Proven Highly Effective to Protect Buildings from Wind Borne Debris Portofino Tower- Impact Glazing Greensburg Building- No Impact Glazing Hurricane Wilma 2005 March 15, 2018 Trosifol Business 8

9 Hurricane Harvey Gulfstream Condominiums on North Padre Island Sustained winds of 97mph (156 km/h) Back in business 4 days later once power restored Other buildings in the area will not reopen until 2018 No structural damage 90 mil (2.28 mm) SentryGlas -Retrofit Photo Courtesy Lee Little Remodeling March 15, 2018 Trosifol Business 9

10 SentryGlas Stiffness Enables Use of Dry Glaze Systems Wet glazed systems Often used for shop glazed fenestration products Commonly used for the High Velocity Hurricane Zone (Wind Zone 4) PVB based interlayers must be wet glazed to pass the required cycling test Dry glazed systems Especially suitable for job site glazed fenestration systems Dry glazing eliminates the use of wet sealants and more closely replicated the as tested conditions Large missile impact systems have been certified up to psf Cost savings in terms of labor and materials Time savings in replacing broken glass Assurance that system is properly glazed March 15, 2018 Trosifol Business 10

11 Examples of Dry Glaze Systems In Florida Cornerstone Project Southern Wines Project Valpak Project March 15, 2018 Trosifol Business 11

12 Examples of SentryGlas in Hurricane Impact Glazing Porsche Design Tower- Sunny Isles Beach Florida Brickell City Center 1000 Museum March 15, 2018 Trosifol Business 12

13 Beyond Hurricane and Wind Borne Debris Protection Early 2000 other benefits beyond wind borne debris protection were discovered Coupling effect Thinner glass and higher loads than with PVB Superior post breakage strength Enhanced safety beyond PVB Stairs, floors, walkways, railings March 15, 2018 Trosifol Business 13

14 Coupling Effect- Effective Thickness Coupling Effect (Structural Interlayer) No Coupling Effect (Standard PVB) 6.5 mm 5 mm 5 mm 10 mm 5 mm 5 mm SentryGlas provide a coupling effect allowing for thinner glass to be used in some cases March 15, 2018 Trosifol Business 14

15 Effective Thickness vs Temperature Stiff PVB Ionoplast PVB Increase in temperature lowers shear modulus reducing the coupling effect and effective thickness March 15, 2018 Trosifol Business 15

16 Post Glass Breakage Strength- Single Point Supported Railings Mounted into channel using dry-glazed mounting system Shot bag dropped from m (5 ft) (500 ft.lbs of energy) Structures 12.7 mm fully tempered (FT) mm FT with applied PET film (.2mm) 6 mm/ 1.52 PVB/6 mm FT 6 mm/0.89 Ionoplast/6 mm FT 5 mm FT/1.52 Ionoplast/ 5 mm FT March 15, 2018 Trosifol Business 16

17 Examples of structural glazing Stairs Brewster Glacier Skywalk Railings Top of the Rock March 15, 2018 Trosifol Business 17

18 Structural Projects-Shanghai Tower Enhanced strength Edge Performance Architect: Gensler Structural Engineer: Thornton Tomasetti 632 meters tall March 15, 2018 Trosifol Business 18

19 Cologne Triangle, Cologne Germany High wind load requirement Large Panels 20% thinner than PVB 6 mm FT/1.52 mm SentryGlas / 8mm FT Uninterrupted views of the city March 15, 2018 Trosifol Business 19

20 SentryGlas Strength Enables Cost Effective Systems Considerations in Glazing Designs Glass thickness reduction due to the structural coupling approach with SentryGlas Cost (materials) savings due to thinner cheaper float glass Stiffness allows for dry glazing saving cost of silicone and on site installation Reduced handling and processing costs-reduction in weight of glass results in less handling and reduced transportation cost Large panels can be used which require fewer metal attachments March 15, 2018 Trosifol Business 20

21 Case Studies-Cost Reduction Case Studies Balustrade Study Canopy Study Façade Study Dry Glazing March 15, 2018 Trosifol Business 21

22 Ballustrade Study Type A: Cantilevered Balustrade- With a handrail Size: 1500mm (W) x 1100mm (H) Support Conditions: Glass uniformly bonded into rigid channel in accordance with BS March 15, 2018 Trosifol Business 22

23 Balustrade Type A: Cantilevered Balustrade- With a handrail Size: 1500mm (W) x 1100mm (H) Support Conditions: Glass uniformly bonded into rigid channel in accordance with BS Short Term Load Duration of 1min at 40 C G-Modulus for PVB = 2.1MPa G- modulus for SentryGlas = 91.6 MPa Interlayer Type PVB Constructionmm 12 HST/1.52mm PVB/12 HST SentryGlas 10 HST/0.89mm/1 0HST Comparison of glass thickness as a % Peak Deflection mm Peak Stress N/mm2 Weight of Glass KG 113% KG 100% Monolithic FT 19 mm KG 110% Cost Comparison % Higher Performance-Lower Cost! March 15, 2018 Trosifol Business 23

24 Canopy March 15, 2018 Trosifol Business 24

25 Canopy Load Case: A Interlayer Type PVB SentryGlas Construction mm 19 HST/1.52 mm/12 HST 12 HS/0.89 mm/8hst Comparison of glass thickness Peak Deflectionmm Peak Stress N/mm (1) & 37 (2) (1) & 39 (2) Weight of glass 196 Kg 150 % 130 KG 100% Monolithic 19 mm HST KG 99% Cost comparison % Interlayer Type PVB SentryGlas Load Case: B Construction mm 19 HST/1.52 mm/8 HST 8 HS/0.89 mm/5 HST Comparison of glass thickness Peak Deflectionmm Peak Stress N/mm (1) & 54 (2) (1) & 55 (2) Weight of glass 130 Kg 138 % 85 KG 100% Monolithic 15 mm HST KG 106% Cost comparison % March 15, 2018 Trosifol Business 25

26 Facade Façade Glazing Dimension 1500 mm x 3000 mm Supported by 4 rotules Windload 1.75 kpa Construction 2 x 15 mm/1.52 mm PVB No Coupling 2 x 10 mm/ 1.52 mm SentryGlas Full Coupling Maximum glass stress (Mpa) Maximum deflection (mm) Glass Thickness Reduction by 10 mm Same stiffness Improved post breakage and edge stability March 15, 2018 Trosifol Business 26

27 Benefits of Lower Weight Typical weight reduction of 30%: - Less support structure - Lower installations costs - More freedom for the designer - General energy savings 15 mm float glass PVB 15 mm float glass 10 mm float glass SentryGlas 10 mm float glass March 15, 2018 Trosifol Business 27

28 Conclusions SentryGlas developed in 1998 to address an immediate need for hurricane impact glazing systems as proven to be both effective at preventing damage as well as durable Structural benefits enable glass to be used in applications previously not possible High strength opens options for lower system cost March 15, 2018 Trosifol Business 28