Help


from Brown Corpus
« »  
The first one or two roof boards ( marked `` E '' in fig. 6 ) are slipped into place across the roof beams, from outside the shelter.
These boards are nailed to the roof beams by reaching up through the open space between the beams, from inside the shelter.
Concrete blocks are passed between the beams and put on the boards.
The roof blocks are in two layers and are not mortared together.

1.836 seconds.