Design a Douglas Fir Larch (No. 1) wood joist with a span length (center line of bearing to centerline of bearing) of 16 ft. The joist is part of a floor system with a joist spacing of 16 in. The beam is supported on 2x6 members (placed flat).

The thermal expansion or contraction of a given metal is a function of the f a)-density b)-initial temperature c)- temperature difference d)- linear coefficient of thermal expansion e)- final temperature f)- original length

Draw the engineering stress-strain curve for (a) bcc; (b) fcc metals and mark important points.

Water at the rate of 1 kg/s is forced through a tube with a 2.5 cm inner diameter. the inlet water temperature is 15°c, and the outlet water temperature is 50°c. the tube wall temperature is 14°c higher than the local water temperature all along the length of the tube. what is the length of the tube?