is there a question and answer key for \"understanding construction drawings \" blueprints sheets? Solution Understandings on comes better on hands of experience. Though we could understand the drawing by engineer\'s explaination. Bureau Indian Standard published a special codal provision for detailing a structure in drawings. The code is comes under SP: 34(S&T)-1987. However It gives details on how a drawing should represent a structure. Kindly post a question, in which part of drawing you are finding difficulty to understand, for clarity answers. Please attach the drawing if possible..