Assertion: manhole cover's opening | /r/HasProperty | basin
Facets:
Source sentences:
text: When the proper grade level and proper leveling of the manhole frame 2 is obtained by the shimming of the frame 2 by means of bricks 10, the remaining area between the bottom surface of the manhole frame 2 and the opening in the sewer catch basin 4 is bricked up by hand.