The below figure shows a ${24}^{\text{'}}{0}^{\text{'}\text{'}}$ wide by ${20}^{\text{'}}0$ high $8^{\text{'}\text{'}}\frac{C}{M}U$ wall. The opening shown is

located is $6^{\text{'}}{0}^{\text{'}\text{'}}$ wide and $8^{\text{'}}{0}^{\text{'}\text{'}}$ high. The lintel is $8^{\text{'}\text{'}}$ tall cast stone with $8^{\text{'}\text{'}}$ of bearing on each

side of the opening. Assuming that block weighs $40$#$/$block$,$ what is the weight $($in pounds$)$

of block that the lintel must support?