In seismic areas, the most crucial requirement for precast concrete is:
1) not to build higher than two stories.
2) to tie elements together laterally.
3) to make ductile concrete beams.
O 4) to use only steel columns.
5)
precast concrete cannot be used in seismic zones.

In seismic areas, the in-plane lateral forces are very larger and hence in order to restrict the lateral movement governed by the lateral force, lateral ties are essential .

Specific design detailing such as interior and perimeter ties in the floors causes diaphragm behavior and hence distribute the load evenly without any movement.

Hence, option 2 is correct

In seismic areas, the most crucial requirement for precast concrete is: 1) not to build higher than two stories. 2) to tie elements together laterally. 3) to make ductile concrete beams. O 4) to use only steel columns. 5) precast concrete cannot be used in seismic zones.

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In seismic areas, the most crucial requirement for precast concrete is:
1) not to build higher than two stories.
2) to tie elements together laterally.
3) to make ductile concrete beams.
O 4) to use only steel columns.
5)
precast concrete cannot be used in seismic zones.