Answer :
In the context of structural engineering, particularly in the design of flat slab systems, the panel refers to the portion of the floor supported by columns. In such a design, the slab is divided into column strips and middle strips to determine how reinforcement will be placed.
For a panel sized 6m x 6m:
Column Strip: This is the strip of slab that runs across the columns. For flat slabs, the column strip is generally defined as having a width equal to half the span length. Here, since the full span is 6m, the width of the column strip would be [tex]\frac{6}{2} = 3.0 \text{ m}[/tex].
Middle Strip: This is the area of slab between the column strips. Since the total width of the panel is 6m, and assuming a uniform distribution, the middle strip takes up the remaining width after the column strips, which again would be [tex]3.0 \text{ m}[/tex].
Therefore, in this scenario, both the column strip and the middle strip each measure 3.0m.
Thus, the correct option is:
B) 3.0m and 3.0m
