EXHIBIT 12
COMMERCIAL METALS COMPANY AND SUBSIDIARIES
RATIOS OF EARNINGS TO FIXED CHARGES
(DOLLARS IN THOUSANDS, EXCEPT RATIOS)
<Table>
<Caption>
YEAR ENDED AUGUST 31,
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1998 1999 2000 2001 2002
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EARNINGS:
Earnings before income taxes $ 68,069 $ 74,803 $ 70,660 $ 38,415 $ 63,138
Interest expense 18,055 19,650 27,319 27,608 18,708
Interest imputed on rent 3,211 3,033 3,555 3,828 3,925
Amortization of capitalized interest 417 602 1,367 1,370 1,307
---------- ---------- ---------- ---------- ----------
Total Earnings $ 89,752 $ 98,088 $ 102,901 $ 71,221 $ 87,078
FIXED CHARGES:
Interest expense $ 18,055 $ 19,650 $ 27,319 $ 27,608 $ 18,708
Interest capitalized 1,622 4,547 808 1,111 447
Interest imputed on rent 3,211 3,033 3,555 3,828 3,925
---------- ---------- ---------- ---------- ----------
Total Fixed Charges $ 22,888 $ 27,230 $ 31,682 $ 32,547 $ 23,080
Ratio of Earnings to Fixed Charges 3.92 3.60 3.25 2.19 3.77
</Table>
Note: Fixed charges represent interest expense, the portion of operating rent
expense that management believes is representative of the appropriate interest
component of rent expense and capitalized interest.