Why is it important that ironworkers wait to begin work until after cement masons are finished with their job?
cement is an important component of iron.
for most buildings, iron is used to encase the cement.
constructing a building's framework requires a solid foundation
it is easier for cement masons to correct errors in their work than it is for ironworkers

Water in a partially filled large tank is to be supplied to the roof top, which is 8 m above the water level in the tank, through a 2.2-cm-internal-diameter pipe by maintaining a constant air pressure of 300 kpa (gage) in the tank. if the head loss in the piping is 2 m of water, determine the discharge rate of the supply of water to the roof top in liters per second.

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

Vibration monitoring this technique uses the noise or vibration created by mechanical equipment and in seme cases by plant systems to detemine their actual condtion. a)- true b)- false