Page 463 - Forensic Structural Engineering Handbook
P. 463
Interior 0.45 0.025
Slate building stone Metamorphic Quartz, mica H 2 KaI 3 (SiO 4 ) 3 ; (H,K) 2 (Mg, Fe) 2 Al 2 (SiO 4 ) 3 MA to GA, CA, AR Blue, green, black, purple, gray C 629 9, ‡7.2§
Exterior 0.25 0.015
Travertine Sedimentary 144
Serpentine 7 ft 168
Marble Calcite, dolomite CaCO 3 , MgCO 3 NY to AL, IN to MS, NE, KS, MO, OK, AR, White, gray, red, pink, buff, rose, gold, green, 5 ft C 503 0.2 0.045 75 1 1
Physical Properties and Characteristics of Marble and Slate
Dolomite TX, CO, SD, WY, CA, MN, WI black, yellow, brown, tan 175
Calcite Metamorphic 162
Characteristic Water absorption (% by weight), max. Compressive strength, ksi, min Modulus of rupture,* ksi, min. Flexural strength,† ksi, min *Determined by a single midpoint load. †Determined by two quarter-point loads. ¶Thermal expansion/contraction hysteresis.
TABLE 13.4 Geology Mineralogy Chemistry (approximate) Geography Colors max. Size, ft 2 ASTM specification Density, lb/ft 2 , min Permanent set¶ Acid resistance, in max. ‡Crossgrain. §Along grain.
13.10
