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applicable to all uniGs. Please nobr ,hat prescriptive path N, "unlimited glazing' is now clearly
<br />indicatcd.
<br />Unheated garage spuce sepazation, per IRC R309, is specified in the appropriate areas of each
<br />unit's plans (lower iloodfoundation), cailled out :"5/8" GWB type `X' at cciling, wartn walls,
<br />and wrap all posts and bcams: ' Solid core doors ("S.C.") aze c:�lled for at appropriate locations (
<br />top of stairs, unit A, sheet 3, and at bonom landing for units B, C, and D, sheets 9,13, and 18
<br />respectively.)
<br />Protection for acccssible space under staiis is called out on Dctnil E, sheet 19, as "provide 5/8"
<br />GWB type `X' at eeil. Rc walls at accessible enclosed :;paces under stair," which exceeds that
<br />required by R311.2.2.
<br />We have added a crawlspace dewil with insulatcd tloor on sheet 2U (plcase see nea� Detail J on
<br />that page) to address the final conccrn, Uiis item.
<br />5. Detail I, sheet 20, depicts both walls (Units D/C & ND) having 5/8" GWB type `X' on all
<br />interior walls and ccilings, and fire-rated 5/8" gypsum sheathing board on the full height of all
<br />extcrior frame walls which �rc: udjacent to ncightwring franic walls, and up to all roofs (in other
<br />words, no 1-HR. At both sidcs where fi�ame walls are adjacent only to retaining wall/footing).
<br />We have altcrcd our roof specifications to satisfy the "exccptiod' allowed regarding roof
<br />parapets, per R� 17.2.2 (sec item 7 for more infortnation).
<br />More accuratc tloor height relationships can be seen on new shect G2, per item 8.
<br />G. We now provide a section detail for the conditiun ot'roof trusses running perpendicular to fire-
<br />resistant rated walls; pleuse see Detail X, sheet 20. Please note that in all circumslances where
<br />roof trusses mecl walls perpendicularly, over-framing is necessary (typically, a cricket) as the
<br />roof slopcs run do�mhill lineazly along the truss direction, so the construction of the fire-resistant
<br />rated wall is not too dissimilar to the "parallel truss" condition. But your concem is appreciated,
<br />ai�d wc hope this detail suffices.
<br />7. Parapets havc becn circumvented by applying the "exccptiod' note found in IRC R317.2.2.
<br />We azc now specifically calling tor "Class A" roofing on our typical roof construction details,
<br />Detail A, shcet 19, and four fcet of fire-ret.udant-trcated ���ood sheathing in the appropriate azeas
<br />(please see Roof framing I'lan, sheet C-1.
<br />8. This is reyucst is hard to satisfy with a single drawing, as die irregulaz shape of the townhouses
<br />m:ikes � single cross-section that captures the critical areas of stair headroom height impossible.
<br />Tlie cross-sectiou supplied (sce sheet G2) adequately illustrates the relationship between floor
<br />hcights, and at scale depicts story heights. Story heights are specifically called out on ihe
<br />clevation drawings of cach individual unit (please sec sheets 2, 6,10, and 15). IRC R 301.3 refers
<br />to table RG02.3(S), which stipulates a marinnun 10' ht. for laterally unsupportcd studs, while we
<br />nevcr spccify tuller tliun 9'-0" on ow elevations. R305 is satisfied via these dimensions as well, as
<br />no ceiling ht. is specified lower than R'-0", and all bcams have bcen selected with clearance
<br />beneath in mind (plcasc sec lloor plmis for specific beam dimensions). Stair headroom height is
<br />speciticd at a minimum of 6-S", per IRC K311.5.2, on Detail E, sheet 19 (tided `9nterior Stair").
<br />Ridge and floor heights are calculated on the section drawing G2 from the 0.00' datum (marked
<br />ulso on thc Plot Pl�vi, lower right corner of thc scale drawing) rather than the typical average
<br />2/
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