45) What is a temporary structure, to remove water and soil from an area and make it possible to carry out the construction work under reasonably dry condition?

46) Which foundation is suitable, if no firm bearing strata exists at reasonable depth and the loading is uneven?

47) Which foundation is suitable, if the water table is very near to G.L and may defect the other types of form?

48) Which piles are driven at angle to resist the large horizontal / inclined forces?

49) What is the term that the horizontal members are parallel to the wall in scaffolding?