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<br /> -, � _ N , __ o ; ROOF VENTILATION � _ � N
<br /> � �
<br /> , �� � , � � �SECTION R806 �I � �p N W
<br /> � v ; , "' ' o = -Vented area @ eave & 50% @ 3-ft.abv eave (1/300). � z �, p�
<br /> ; 2x12 Rafters @ 24 bc i U 3 ate gab e/ oof vents as hi h as possible p�„
<br /> � . --... -----_ _ � ___ _ _ __ -- -- - - Loc I r g . ,-i W
<br /> _ -_ _ . _ __ _ O
<br /> ROOF DRAINAGE & COVERING � , ; ' i -All Vents to be screened w/ 1/4" max. corrision resistant z � �-+ W
<br /> , �, metal wire mesh.
<br /> IRC R801.3, R903, R904, R905. j ! � ; ` �
<br /> ', 1. Water shall discharge to an approved drainage system. i � � ; -Vent blks shall have (3) 2" dia. holes= 6.59sq in. net(70%)., � Q
<br /> ' 2. Flashing shall be installed at wall & roof intersections, at � i ,- Locate vent blocks @ corners 8� evenly btwn for attcs. C�
<br /> changes in roof slope or direction, around roof openings. _ : ; - Provide vent blk each rftr.
<br /> ' 3. Flashing against vertical front wall, as well as soil stack, i ; Continuo 6x12Df2 fr � ,- Min. 1" space btwn the insulation & roof shtg and at vents. '
<br /> vent pipe, valleys, and chimney shall be applied according , _ � ' "� ; ,
<br /> #o the asphalt shingle mfr. printed instructions ' : '
<br /> 4. Drip Edge per R905.2.8.5. Shall be provided at eaves , � �, a RQ�F VENT CALCS:
<br /> and gables of shingle roofs. ' - '',IRC R806 :
<br /> , Underlayment shall be installed over the drip edge along IProvide Cross Ventilation. Z
<br /> eaves and under the underlayment on gables. Unless ' '�__24" OVERHANG '�,376sf/300= 1.25sf Required g
<br /> , specified differently by the shingle manufacturer, shingfes '; to match existing !,Upper Roof Area (40-50% of req'd) Z
<br /> ' are permitted to be flush with the drip edge. ,, I14 Lf Cont. Ridge Vent, 8LF = 1 sf �
<br /> ' ', i 14/8 = 1.75sf provided q�
<br /> ; ';Lower Ruof Area �-
<br /> ' ROOF FRAMING NOTES '� !Bird block per hole factor 1"= .0055 p
<br /> 1. Cut rafter tails to match eng. trusses. 28' x.Q123(1.5"dia) x 3/block= 1 sf Provided � �
<br /> 2. Roof flashing shall be provided and comply with 2015 ', �
<br /> ' IRC, section R703.8 w
<br /> - -__ __ -- - -- _ ---- -- . _- - ►u
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<br /> ROOF FRAM I NG PLAN DP�TE:
<br /> 1/4l,- � ,_o��
<br /> , �j��:�K�_� 8/28/2017
<br /> . �,,
<br /> " °"✓�� �s. e�c� � _
<br /> < �
<br /> b�' ����w�s� `��q'4 SGALE:
<br /> s�raucr���� ����riE�.�otv�v ,� �y�' , t z ���` "�
<br /> FGR COMPLI/�NCE �1"d'�-I ` , �
<br /> CAt,CULATIUNS SY� � �-�` �
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<br /> e��� ';�,s .�>
<br /> tl(y�{��( p/�pIt Y (�-y(y9,,.,,-. gq;y�� �9
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<br /> '��.��� ���v'���� SHEET:
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