Compact Studs Between Joists and Sloping Rafters

This page is the CodyCross answer for the clue below from African grasslands, Group 1547, Puzzle 4 (Ostriches and Flamingos).

Question is: Compact Studs Between Joists and Sloping Rafters

and the answer is: ASHLARS

Word Meaning:

ASHLARS — plural of ashlar

Definitions from Wiktionary.