///
_UNITS    cm
// _OOO ORC               D       t   
_OOO    ORC20             20.      10
_OOO    ORC25             25.      12.5
_OOO    ORC30             30.      15
_OOO    ORC35             35.      17.5
_OOO    ORC40             40.      20
_OOO    ORC45             45.      22.5
_OOO    ORC50             50.      25
_OOO    ORC55             55.      27.5
_OOO    ORC60             60.      30
_OOO    ORC65             65.      32.5
_OOO    ORC70             70.      35
_OOO    ORC75             75.      37.5
_OOO    ORC80             80.      40
_OOO    ORC85             85.      42.5
_OOO    ORC90             90.      45
_OOO    ORC95             95.      47.5
_OOO    ORC100           100.      50.0
