This video shows how to modify parts by adding points to the end of a strip footingfooting that supports several points of contact or a region of points of contact

Strip footing supports a length of wall or a line of closely spaced columns, for example.

In Tekla Structures, strip footing has a polygon shape that the user defines by picking points.

.

Please note that this video only applies to Tekla Structures 19.1 and older. The Modify command was replaced with Direct modificationfunction that activates the mode where the model objects can be modified by using handles

Direct modification enables additional handles and modification options.

in Tekla Structures 20.0.