Semi-tempered glass in load-bearing structures GEWE-tvg ® is manufactured through heating the glass in a targeted way and through controlled cooling. The mechanical strength and thermal shock resistance lies between the values relating to float glass and ESG. As laminated safety glass, GEWE-tvg ® is used in instances where the strength and the temperature resistance of float glass is not enough and where ESG, because of its delicate fragmentation when shattered, does not provide the required level of protection. Semi-tempered glass cannot be further processed after manufacture. For this reason, GEWE-tvg ® is the ideal product for further processing into laminated safety glass. In this combination, a safety glass is created for strengthening, partition walls, point-glazing and overhead glazing, which combines above all, constructive safety features with active and passive safety features in an optimally manufactured product. Glass thickness GEWE-tvg® (mm) Glass thickness GEWE-tvg® (mm) Note: Execution - clear, coloured, enamelled The technical characteristics of TVG: Flexural strength 70 N/mm2 Float glass clear, coloured, coated 45 N/mm2 enamelled float glass (enamel surface under tension) 55 N/mm2 Ornamental glass Permissible flexural tensile stress Thermal shock resistance Subsequent processing Shatter properties Radial cracks from the attachment point Through individual cut and screen printing techniques before tempering process (Calculated value in accordance with the general approval by construction authorities) Proof Correspondingly, all panes of glass are visibly and permanently marked Internal and external monitoring in accordance with EN 1863-2 General approval by construction authorities – DIBt No. Z-70.4-67 *) Enamelled TVG Issue 5/2008 – Changes reserved GEWE-tvg ® is manufactured in our Nossen and Lommatzsch factories in accordance with EN 1863 and has a general approval by construction authorities – DIBt No. Z-70.4-67.