Question

In a girder of rectangular cross-section, the longer side is used as​

Answer 1

Answer:

When a load W is attached at the middle point of a girder of length l. breadth b and depth d, supported horizontally. The depression

produced at middle point in the girder is given <br> by

<br> Therefore, depression of the girder will be small. <br> When depth d is larger, because

<br> Therefore longer side of cross-section of the girder is used as depth, so that depression is small for safety of buildings.