Building Construction
In a colar beam roof

There is a horizontal tie at almost the middle of rafters only
There are two horizontal ties, one at the feet and other at the middle of the rafters
There is no horizontal tie beam
There is a horizontal tie at the feet of rafters only

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Building Construction
In English garden wall bond

One course of headers to three or five course of stretchers
Queen closer in provided in each heading course
All of these
The middle course of stretchers is started with a header to give proper vertical joints

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