ACI 318-14 Section 25.2.3 requires distance between longitudinal bars not be less than _______.

When a column is under compression, the column shortens and expands laterally.

Weakening of concrete near the top of a column is due to upward migration of water in the fresh concrete.

In nonseismic areas, tied columns are used more extensively.

In tall buildings, lower strength concrete is generally used in the columns to reduce their size.

Uneven compaction of the concrete across the width of a section can cause eccentricities in columns.

In a typical construction cycle, the reinforcement and concrete for the columns are placed after the reinforcement and concrete for the beams and slabs in a floor system above it.

ACI 318-14 Section 25.7.2.1 specifies that ties shall have a center-to-center spacing not exceeding the least of 16db of longitudinal bar, 48db of tie bar, and smallest dimension of member.

If additional steel reinforcement in a column prevents concrete from expanding outward under compression, then logically it follows that _______.

The textbook discusses six methods commonly used to design rectangular columns subjected to biaxial loads.