For a proposed building, raft foundation, isolated footings and combined footings are being considered. These foundations are to be listed in the decreasing order of preference in terms of performance. Which one of the following is the correct order of listing?
1
Raft foundation - Combined footings - Isolated footings
2
Isolated footings - Raft foundations - Combined footings
3
Combined footings - Raft foundations - Isolated footings
4
Combined footings - Isolated footings - Raft foundations