MCQOPTIONS
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| 1. |
The grade of concrete for prestressed members should be in the range of |
| A. | m-20 to m-30 |
| B. | m-80 to m-100 |
| C. | m-30 to m-60 |
| D. | m-60 to m-80 |
| Answer» D. m-60 to m-80 | |