UFGS 33 61 13 Pre-Engineered Underground Heat Distribution System  

History: Below is a listing of the Revisions and Changes made to this UFGS.

KEY PREPARING ACTIVITY (PA) A Army N Navy F Air Force S NASA
ACTION N New R Revision C Change D Deletion
Release PA Action Change # Nature of Change or Revision
Feb-2020 A C 1

Deleted reference from paragraphs 3.9.1.1 and 3.9.1.2 in response to CCR 2504. Updated paragraph 2.4.4 in response to CCR 3271.

Aug-2010 A R

Updated poured-in-place insulation requirements

Apr-2008 A R

Compliance with CSI SectionFormat