M-300 — MECHANICAL PLAN

Mechanical plan with lettering drawn as outlines. Only the two duct smoke detector 'SD' symbols are EC-counted here; placed by hand from the rendered page. AHU, exhaust-fan and damper connections are counted on E-400.

Names come from: no legend on this sheet, so NECA 100-2006 is what a name rests on. It is the baseline for what a symbol MEANS, never for matching shapes — proportions differ per firm. Confirming a name here is a correction, and corrections are what build the firm's file.

Scale is 3/16" = 1'-0" — 13.5 points per foot. Read off the title block, so measurement off this sheet is available. A later correction flags any measurement taken under the old scale as stale rather than silently recomputing it.

acting aslookadd a markstrike a markPut your name in to mark this sheet up. Looking needs no name.

zoom−100%+fit2×3×sheetonoffcountsonoff2 of 2 marks drawn

Page 5 of Copy of 2498 M set 2025-0530 Revision 1.pdf, recorded by the read.

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EXISTING DUCT SMOKE DETECTOR (SD)

placed by hand from page image

takeoff: EXISTING DUCT SMOKE DETECTOR RECONNECTION TO NEW AHU (UNIT SHUTDOWN INTERLOCK), EXISTING DETECTOR TO REMAIN