<p class="MsoNormal">18x11m house building beam cross section 2d plan is given in this drawing. The length and breadth of the beam is 150x200mm. 3 numbers of reinforcement bar is provided at the top and bottom with the 8mm rod. I section and it details are provided in this channel. Here, 6 different types of I section is given.</p> <p class="MsoNormal"> </p>