Exam 1: Pile Driving, Cofferdams, and Types of Piles

Modern pile driving method was first invented by ________.

which of the following piles is used to compact loose granular soil?

the types of hammer used for driving piles are _______.

if a hammer is raised by stem and allowed to fall by gravity on top of the pile, it is called as ______.

a ______ is defined as a temporary structure which is constructed so as to remove water and/or soil from an area and make it possible to carry on the construction work under reasonably dry conditions.

______ type of cofferdam is economical at places where rock is available in plenty.

piles are commonly driven in to the ground by means of special device called _______.

when the area to be enclosed is large, it becomes essential to provide the ______ construction so as to give stability to the cofferdam.

single acting hammers provide an advantage in _______ type of soil.

sheet piles are commonly used as ________ in hydraulic structure.

in _____ type of cofferdam consists of a mixture of sand and clay which is filled in a bag and placed instead of earth or rock to form a cofferdam.

______ is to be incorporated as a part of a permanent structure which have been proved to be economical.

the piles that are used for protecting structures from ships and floating object is _______.

a ______ consist of timber cribs.

______ it suitable when available working space is limited and the area to be enclosed is small.

_______ is the simplest form of cofferdam.

cast in situ piles may be classified in to_______.

based on the function, piles can be classified into ______ types.

_______ is useful when depth of water is about 6 meters to 10 meters.

the precast concrete piles are generally used for a maximum design load of about _______.