| 1 | In a basement, the top and bottom plates are often different lengths. | |
| 2 | The roof of the working face caved in suddenly, several miners were trapped. | |
| 3 | That' s because top plates may project past foundation walls and be longer or run into soffits and be shorter. | |
| 4 | And those guys just didn't bother to discuss the problem with me but just stuck the flour (my roof). | |
| 5 | This paper recommend a royal road about dip angle and tendency of the tunnel roof and analysed the applicability . |
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