ऊपरी दीवार के भार को वहन करने के लिए खिड़की या दरवाजे के ऊपर क्षैतिज रूप से कौन सा संरचनात्मक तत्व लगाया जाता है?

Which of the following statements conform(s) to panel walls in building construction? 1. Panel walls are external load bearing walls. 2. They are self supporting walls subjected to lateral loads. 3. They are primarily used in framed structures.

Which of the following statements conforms to 'corbels' in masonry?