 |
BOWED |
INTERNAL FOR HOUSING BORES |
BOWED CONSTRUCTION PERMITS RESILIENT TAKE-UP END-PLAY
|
 |
BOWED |
EXTERNAL FOR SHAFTS |
BOWED CONSTRUCTION PERMITS RESILIENT TAKE-UP END-PLAY
|
 |
BEVELLED |
INTERNAL FOR HOUSING BORES |
BEVELLED CONSTRUCTION PERMITS RIGID TAKE-UP OF END-PLAY |
 |
BEVELLED |
EXTERNAL FOR SHAFTS |
BEVELLED CONSTRUCTION PERMITS RIGID TAKE-UP OF END-PLAY |