A very common approach for splicing columns in multi$-$story structures is to lap splice the bars just above the floor

deck as shown below. Because of the potential for bending loads on the column, the splices are often required to

develop the bar tensile strength. For this condition, what is the required lap splice using the provisions of

ACI $318-19$ Section $25\mathrm{.}4\mathrm{.}2\mathrm{.}3?$

Given:

$f^{\text{'}}=6,000,$ normal weight concrete

$f_y=60,000$

Plan view

Follow$-$up question:

If grade $100$ bars are used in lieu of Grade $60$ bars, would the lap splice change? If so$,$ what would be the change

in the required lap splice?A very common approach for splicing columns in multi$-$story structures is to lap splice the bars just above the floor

deck as shown below. Because of the potential for bending loads on the column, the splices are often required to

develop the bar tensile strength. For this condition, what is the required lap splice using the provisions of

ACI $318-19$ Section $25\mathrm{.}4\mathrm{.}2\mathrm{.}3?$

Given:

$f^{\text{'}}=6,000,$ normal weight concrete

$f_y=60,000$

Plan view

Follow$-$up question:

If grade $100$ bars are used in lieu of Grade $60$ bars, would the lap splice change? If so$,$ what would be the change

in the required lap splice?