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new highway is to be constructed. Design A calls for a concrete pavement costing

$9090

per foot with a

2020-year

life;

twotwo

paved ditches costing

$33

per foot each; and

threethree

box culverts every mile, each costing

$9 comma 0009,000

and having a

2020-year

life. Annual maintenance will cost

$1 comma 8001,800

per mile; the culverts must be cleaned every

fivefive

years at a cost of

$450450

each per mile.Design B calls for a bituminous pavement costing

$4545

per foot with a

1010-year

life;

twotwo

sodded ditches costing

$1.501.50

per foot each; and

threethree

pipe culverts every mile, each costing

$2 comma 2502,250

and having a

1010-year

life. The replacement culverts will cost

$2 comma 4002,400

each. Annual maintenance will cost

$2 comma 7002,700

per mile; the culverts must be cleaned yearly at a cost of

$225225

each per mile; and the annual ditch maintenance will cost

$1.501.50

per foot per ditch.Compare the two designs on the basis of equivalent worth per mile for a

2020-year

period. Find the most economical design on the basis of AW and PW if the MARR is

66%

per year.

LOADING...

Click the icon to view the interest and annuity table for discrete compounding when the MARR is

66%

per year.

The AW value for Design A is

$nothing/mi.

(Round to the nearest hundreds.)The PW value for Design A is

$nothing/mi.

(Round to the nearest hundreds.)The AW value for Design B is

$nothing/mi.

(Round to the nearest hundreds.)The PW value for Design B is

$nothing/mi.

(Round to the nearest hundreds.)The most economical design on the basis of AW and PW is

Design B

Design A

.

A new highway is to be constructed. Design A calls for a concrete pavement costing $90 per foot with a 20-year life; two paved ditches costing $3 per foot each; and three box culverts every mile, each costing $9,000 and having a 20-year life. Annual maintenance will cost $1,800 per mile; the culverts must be cleaned every five years at a cost of $450 each per mile. Design B calls for a bituminous pavement costing $45 per foot with a 10-year life; two sodded ditches costing $1.50 per foot each; and three pipe culverts every mile, each costing $2,250 and having a 10-year life. The replacement culverts will cost $2,400 each. Annual maintenance will cost $2,700 per mile; the culverts must be cleaned yearly at a cost of $225 each per mile, and the annual ditch maintenance will cost $1.50 per foot per ditch. Compare the two designs on the basis of equivalent worth per mile for a 20-year period. Find the most economical design on the basis of AW and PW if the MARR is 6% per year. Click the icon to view the interest and annuity table for discrete compounding when the MARR is 6% per year. The AW value for Design A is $ /mi. (Round to the nearest hundreds.) The PW value for Design A is $ /mi. (Round to the nearest hundreds.) The AW value for Design B is $ /mi. (Round to the nearest hundreds.) The PW value for Design B is $ /mi. (Round to the nearest hundreds.) The most economical design on the basis of AW and PW is

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