The total thickness needed should be about a meter, most of that being water.
The total thickness of the group ranges from 600 m to 750 m.
Cross-drill on the mark, to about three-quarters of the total thickness, or right through.
The area around the gun ports was reinforced by 4.5-inch plates to give a total thickness of 10 inches.
They are covered at least six layers, with a total thickness of one meter.
The total thickness is up to 1000 m.
The total thickness of the deepest beds exceeds 5 km.
A total thickness of about 15 cm is enough to make the sod survive a dry summer.
Not nearly so deep as it had seemed at the time, not when compared to the total thickness of the door.
A total thickness of this composite armor was 5.75 in (146 mm).