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TAG tables proposal to remove mass-transfer-deck sketch pending clearer diagram
Summary
A proponent asked the TAG to remove a illustrative sketch from a definition for mass transfer decks, arguing it causes plan-review confusion. TAG members asked for a realistic replacement and voted to table the proposal until a revised diagram can be submitted.
A proponent, Patrick Hayes, asked the TAG on Feb. 14 to delete a sketch that accompanied a definition for a 'mass transfer deck' in the energy code. He said plan reviewers and designers misread the illustrative drawing and that the sketch does not reflect how podium-style buildings are typically constructed.
Hayes told the TAG the drawing 'causes a lot of confusion' and said it is not representative of common construction where exterior walls typically align with foundation walls and parking decks. Several TAG members said a revised, realistic figure would be helpful. One member suggested replacing the illustrative drawing with a depiction of the more common condition.
The proponent agreed to prepare a revised sketch and work with staff. TAG members voted to table the proposal until the next TAG meeting so the proponent can submit a replacement diagram. TAG members said the revised graphic should illustrate commonly built conditions (for example showing mass transfer deck thickness relative to intermediate parking deck thickness) and be simple enough for the TAG to review.
Why it matters: Definitions and illustrative figures in the code are used by plan reviewers and designers during permit review; an inaccurate sketch can create unintended compliance interpretations and slow plan review.
Next step: The proponent will prepare a replacement diagram and coordinate with staff ahead of the next TAG session; the proposal will be brought back for consideration when the diagram is available.
