$1.$ A big box retail store is built with CMU bearing walls around its perimeter.$$ The store measures $450$ ft across the front and back and $360$ ft across the sides.$$ The walls are $28$ ft tall and are reinforced horizontally with truss bars in alternate courses and vertically with #$4$ bars $32$ in$.$ on$-$center.$$ There is an $8$ tall bond beam running around the full perimeter of the building at the roof level $(24$ ft$)$ to support the roof framing.$$ The openings in the CMU walls, and the associated lintels are as follows:

Opening

Location

Quantity

Size

Lintel

Lintel Rebar

Door

Front wall

$2$

$8-0$ x $10-0$

$16$ tall CMU

$2,$ #$4$

Door

Side wall

$2$ each side

$8-0$ x $4-0$

$8$ tall CMU

$1,$ #$4$

Door

Back wall

$3$

$8-0$ x $9-0$

$16$ tall CMU

$2,$ #$4$

Window

Side wall

$2$

$4-0$ x $3-0$

$8$ tall CMU

$1,$ #$4$

Note: each lintel should be a multiple of $8$ long and have $8$ of bearing on each side of the opening. Opening sizes are listed as height x width

a$.$ Determine the national average bare cost for the lintels using RSMeans $042210.(30$ pts$)$

b$.$ Determine the national average bare cost to for the bond beams using RSMeans $042210.$

$(20$ pts$)$

c$.$ Determine the national average bare cost for the vertical reinforcing using RSMeans $040519$ and associated grout using RSMeans $040516.$ Use maximum $8$ ft long pieces and lap splice the bars at least $30$ bar diameters.$$ Include $15\%$ waste for the grout. $(30$ pts$)$

d$.$ Determine the national average bare cost for the typical CMU using RSMeans $042210.(20$ pts$)$