Page 461 - Forensic Structural Engineering Handbook

Quartzitic 160 1 20 2

Sandstone Quartzitic sandstone Brown, gray, rose, cream, buff, ivory, pink, tan, yellow, beige, white, red, C 616 150 3 0.0235 10 1

Sandstone Sedimentary Quartz, feldspar SiO 2 NaAlS 2 O 4 KAlS 2 O 4 CaAlS 2 O 4 Most states gold, purple, blue, rust 125 8 4 0.35

Physical Properties and Characteristics of Granite, Limestone, and Sandstone

High 160 3 8 1

Limestone Density Medium NY to AL, IN to MS, IA, NE, KS, MO, OK, AR, TX, WI, CO, White, cream, gray, rust, pink, black, buff, tan, ivory, blue, rose C 568 135 7.5 0.035 4 0.5

Low Calcite, dolomite 50% to 97% CaCO 4 2% to 50% MgCO 4 SD, CA, MN, WY 110 12 1.8 0.4

Traprock “black granite” Pyroxene, hornblend, biotite Pink, green, blue, black

Igneous MA, NH, VT, RI, CT, NY, NJ, MD, VA, NC, SC, GA, WI, MN, MO, OK, TX, CA, SD, ME, PA C 615 160 0.4 0.02 1 9 1.5 1.2

Granite Quartz, alkali, feldspar 70% SiO 2 15% Al 2 O 4 Pink, brown, gray, white, blue, black, green, red *Thermal expansion/contraction hysteresis. †Determined by a single midpoint load. ‡Determined by two quarter-point loads.

TABLE 13.3 Characteristic Geology Mineralogy Chemistry (approximate) Geology Colors ASTM specification Density, lb/ft 2 , min Water absorption (% by weight), max. Permanent set, %* Compressive strength, ksi, min (f ? ) Modulus of rupture,† ksi, min Flexural strength,‡ ksi, min

13.9