1.   On this framework they constructed an airand watertight chamber, with the curtain wall as one of its sides.

2.   The evolution of the curtain wall went hand in hand with the invention of the steel framework.

3.   To build the curtain wall, they needed the bricks on site.

4.   Until the curtain wall had passed its test, none of the work on the walls could start.

5.   He saw it now as a crowding darkness of giant shapes against the merlons of the curtain wall, dominated by the eyeletted walls of the tall hexagonal keep.

6.   They stopped at the foot and stared up at the curtain wall rising above them.

7.   They leaned against the curtain wall.

8.   Athelstan suddenly remembered the bear, stopped and walked back to where the animal sat chained in the corner where curtain wall met Bell Tower.

9.   A smooth curve of reflecting glass curtain wall approximates the pinstripes.

10.   Above the safe, the second floor seemed to float in space, since it was set back from the exterior curtain wall.