Describe the development of green standards and the subsequent impact on the building code. Has the green standards provided better energy efficiency or has the building standard

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

Modern high speed trains do not have perpendicular expansion gaps where rails are joined end-to-end any more they are mostly welded together but what might happen if there was a spell of particularly hot weather that causes inspection of the tracks?

Apressure vessel with an r/t 20 cannot be treated as thin walled vessel. a)-trune b)- false