MCQOPTIONS
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| 1. |
When the span exceeds 4.8 M and when there is no inside supporting walls for Purlins, the frame structures adopted, known as the ____________? |
| A. | Single roofs |
| B. | Purlin roofs |
| C. | Double roofs |
| D. | Trussed roofs |
| Answer» E. | |