As nouns the difference between purlins and joist
is that purlins is plural of lang=en while joist is a piece of timber laid horizontally, or nearly so, to which the planks of the floor, or the laths or furring strips of a ceiling, are nailed.
As a verb joist is
to fit or furnish with joists.
joist
English
Noun
(
en noun)
A piece of timber laid horizontally, or nearly so, to which the planks of the floor, or the laths or furring strips of a ceiling, are nailed.
Derived terms
* (l)
* (l)
* (l)
* (l)
Verb
(
en verb)
To fit or furnish with joists.
References
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