Charles Ellicott Commentary Nehemiah 3:16

"After him repaired Nehemiah the son of Azbuk, the ruler of half the district of Beth-zur, unto the place over against the sepulchres of David, and unto the pool that was made, and unto the house of the mighty men." — Nehemiah 3:16 (ASV)

The sepulchres of David. —Excavated on the western side of the Temple, and not yet traced.

The pool that was made. —This may have been the reservoir of Hezekiah (Isaiah 22:11); and “the house of the mighty” may have been the barracks of David’s elect troops (1 Chronicles 11:10).