सीढ़ी का कौन सा घटक एक ऊर्ध्वाधर स्तंभ या छोटा खंभा होता है जो हैंड्रेल (handrail) को सहारा देता है और सीढ़ी के किनारे की रक्षा करता 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?