The total vertical force, Q, exerted on the base of a mat is 2,000,000 lbs. The mat is 25 feet by 50 feet with an embedment depth of 3 feet in soil having a unit weight of 120 pcf. The gross ultimate bearing capacity for the mat was determined to be 5,000 psf. What is the factor of safety against a bearing capacity failure based on the net ultimate bearing capacity?

Ahot wire operates at a temperature of 200°c while the air temperature is 20°c. the hot wire element is a tungsten wire of 5 um diameter and 2 mm in length. plot using excel current, heat transfer and heat generated by the wire for air velocity varying from 1-10 m/s in steps of lm/s? matlab the sensor voltage output, resistance, or assume nu 0.989 re033pr13 take air properties at tr (200°c20°c)/2 = 110°c properties of tungsten: c 0.13 kj/kg.k 3 p 19250 kg/m k (thermal conductivity) = 174 w/m.k