20150117 Bldg Plan A204ROOF VENTING CALCS
O VENTILATION REQUIRED:
131 SF. X 300
= 3545.1.
VENTILATION PROVIDED:
RIDGE VENTS 12 S.I. / LF X 24 LF = 288 S.I.
EAVE VENTS 45 S.I. / LF X 22 LF = 99 S.I.
TOTAL: = 3818.1.
VENTILATION REQUIRED:
O 966 SF. X 3� = 464 S.I.
VENTILATION PROVIDED:
RIDGE VENTS 12 S.I. / LF X 32 LF = 3845-1.
SAVE VENTS 45 S.I. / LF X 26 LF = 1115-1.
TOTAL: = 5018.1.
OVENTILATION REQUIRED:
1014 SF. X 300 4818.1.
VENTILATION PROVIDED:
RIDGE VENTS 12 S.I. / LF X 30 LF = 360 S.I.
EAVE VENTS 45 S.I. / LF X 32 LF = 144 S.I.
TOTAL: 5046.1.
@ VENTILATION REQUIRED:
1402 Sr-. X 34 = 613 S.I.
VENTILATION PROVIDED.
RIDGE VENTS 12 S.I. / LF X 44 LF = 528 S.I.
SAVE VENTS 45 S.I. / LF X 53 LF = 2385 S.I.
TOTAL: =1665 5.1.
DRAFTSTOPPING
NOTE:
PER IBC SECTION 108.4 (FIRE PARTITION CONTINUITY):
EXCEPTION 5, FIREBLOCKING OR DRAFTSTOPPING IS NOT
REQUIRED AT THE PARTITION LINE (PARTYWALL)
PROVIDED THE ATTIC SPACE IS SUBDIVIDED 5Y
DRAFTSTOPPING INTO AREAS NOT EXCEEDING 3,000 S.F.
OR ABOVE EVERY 2 UNITS, WHICHEVER IS SMALLER
DRAFTSTOPPING IS PROVIDED OVER EACH
PARTYWALL AND EXTENDED THRU THE ATTIC PER IBC
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