HomeMy WebLinkAbout009.01 - A2.30 - ROOF PLAN1. SEE SHEET A1.01 FOR ROOF ASSEMBLIES.
2. ROOF DRAINS AND OVERFLOW DRAINS, WHEN NOT DIMENSIONED, ARE TO BE CENTERED OR
EQUALLY SPACED WITHIN THE ROOF AREA AS SHOWN. DIMENSIONS INDICATED FOR ROOF
DRAINS AND OVERFLOW DRAINS ARE APPROXIMATE AND MAY BE ADJUSTED +/-1'-0" AS
REQUIRED.
3. CENTER OF ROOF DRAINS TO BE LOCATED 2'-0" MINIMUM FROM ADJACENT ROOF EDGE,
PARAPET OR WALLS AS SHOWN UNLESS NOTED OTHERWISE.
4. IN ADDITION TO MECHANICAL AND ELECTRICAL ITEMS SHOWN ON THIS DRAWING, SEE
MECHANICAL AND ELECTRICAL DRAWINGS TO VERIFY LOCATIONS, TYPES, SIZES AND
QUANTITIES OF MECHANICAL AND ELECTRICAL ROOF PENETRATIONS/ITEMS.
5. TAPERED INSULATION SHALL BEGIN AT 0" THICKNESS AT TOP EDGE OF ROOF DRAIN SUMPS
AND SLOPE UP AND AWAY AT 1/4" PER FOOT AS SHOWN TO ACCOMPLISH POSITIVE DRAINAGE
AT ALL LOCATIONS.
6. MECHANICAL CONTRACTOR TO FURNISH ALL CURBS REQUIRED FOR HVAC EQUIPMENT, SEE
MECHANICAL.
7. ALL FLASHING, ROOFING TIE-INS AND ROOFING ACCESSORIES NECESSARY FOR ROOFING
PENETRATIONS, CURBS AND MOUNTING ASSEMBLIES SHALL BE PROVIDED BY THE ROOFING
CONTRACTOR AND APPROVED BY THE ROOFING MANUFACTURER.
SHEET NOTES -ROOF PLAN
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21/4" / 12"1/4" / 12"1/4" / 12"1/4" / 12"1/4" / 12"1/4" / 12"1/4" / 12"1/4" / 12"6
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40'-6"
25'-0"13'-0"30'-6"43'-6"4'-0"19'-5"1'-1"19'-5"1'-1"33'-0"10'-3"
12'-3"
2
6
1/4" / 12"8
MECHANICAL EQUIPMENT
WITH SCREENING
MECHANICAL EQUIPMENT
WITH SCREENING
MECHANICAL EQUIPMENT
WITH SCREENING
MECHANICAL EQUIPMENT
WITH SCREENING
17'-8"1'-2"22'-10"1'-2"27'-4"28'-6"28'-6"28'-6"13'-4"35'-2"15'-0"6'-10"
226'-0"10'-0"13'-0"5'-4"4'-8"18'-8"9'-6"24'-8"8'-3"1'-9"6'-6"9'-1 7/8"111'-5 7/8"11'-7 1/2"74'-0"6
6
5
G1.20
5
G1.2023'-3 3/8"17'-7 1/4"41'-3 3/8"16'-6 3/4"
1'-6"1'-6"
26'-3 3/8"
162°
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33'-7"
7'-0"11'-6"14'-6"8'-9"38'-9"
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PER IBC 1203.2 ATTIC SPACES
1. ENCLOSED ATTICS AND ENCLOSED RAFTER SPACES FORMED WHERE CEILINGS ARE APPLIED
DIRECTLY TO THE UNDERSIDE OF ROOF FRAMING MEMBERS SHALL HAVE CROSS VENTILATION FOR
EACH SEPARATE SPACE BY VENTILATION OPENINGS PROTECTED AGAINST THE ENTRANCE OF RAIN
AND SNOW. BLOCKING AND BRIDGING SHALL BE ARRANGED SO AS NOT TO INTERFERE WITH THE
MOVEMENT OF AIR. AN AIRSPACE OF NOT LESS THAN 1 INCH SHALL BE PROVIDED BETWEEN THE
INSULATION AND THE ROOF SHEATHING. THE NET FREE VENTILATING AREA SHALL NOT BE LESS
THAN 1/150TH OF THE AREA OF THE SPACE VENTILATED.
EXCEPTIONS:
1. THE NET FREE CROSS-VENTILATION AREA SHALL BE PERMITTED TO BE REDUCED TO 1/300
PROVIDED THAT NOT LESS THAN 50 PERCENT AND NOT MORE THAN 80 PERCENT OF THE REQUIRED
VENTILATING AREA PROVIDED BY VENTILATORS LOCATED IN THE UPPER PORTION OF THE SPACE TO
BE VENTILATED AT LEAST 3 FEET ABOVE EAVE OR CORNICE VENTS WITH THE BALANCE OF THE
REQUIRED VENTILATION PROVIDED BY EAVE OR CORNICE VENTS.
2. THE NET FREE CROSS-VENTILATION AREA SHALL BE PERMITTED TO BE REDUCED TO 1/300 WHERE A
CLASS I OR II VAPOR BARRIER IS INSTALLED ON THE WARM-IN-WINTER SIDE OF THE CEILING.
REQUIRED AREA @ SLOPED ROOF TO BE VENTILATED = 3,100 SF
3,100 SF / 300 = 11 SF (1584 SQ. IN.) OF NET FREE VENTILATION AREA (NFVA) REQUIRED.
PROVIDED:
RIDGE VENT: ~120 LINEAR FEET SHOWN ON ROOF @ 18 SI/LF OF NET FREE AREA = 1,836 SQ. IN.
VENTED SOFFIT: ~144 SQUARE FEET SHOWN ON ROOF @ 5 SI/LF OF NET FREE AREA = 3,960 SQ. IN.
TOTAL: 5,796 SQ. IN. (NFVA) COMPLIES
ROOF VENTILATION CALCULATION
------------------------------U P D A T E --------------------------PCV ROOFING
MEMBRANE WITH RIBS
ROOF PLAN LEGEND
FLAT ROOF -EPDM
ICE DAM PROTECTION:
CONTRACTOR TO PROVIDE SELF-ADHERING
SHEET UNDERLAYMENT (ICE DAM PROTECTION)
AT ALL ROOFS. ICE DAM PROTECTION TO BE
INSTALLED ON ALL EAVES, RAKES & VALLEYS -
MIN. 24" ABOVE THE VERTICAL PROJECTION OF
THE INSIDE OF EXTERIOR WALL AND 24" MIN.
EACH SIDE OF VALLEYS.
RIDGE VENT
FACE OF EXTERIOR WALL OUTLINE BELOW
SHEET NO.:
TITLE:
COPYRIGHT 2021 SMA, P.C.
REVISIONS:
KEYMAP:
ARCHITECT/ENGINEER SEAL:
PROJECT:
PROJECT LOCATION:
PREPARED FOR:
OWNER LOGO:
CONSULTANT LOGO/CONTACT:
PROJECT NUMBER:
DRAWN BY:
CHECKED BY:
TEAM:
PHASE:
DATE:
SMA PROJECT NUMBER:Plot Date:AHJ APPROVAL:
THIS SHEET IS INTENDED TO BE
PRINTED IN COLOR
HELENA
P: 406-442-4933
BOZEMAN
P: 406-219-2216
www.sma.design
9/5/2024 4:36:38 PMA2.30
22-106
2024-08-30
ROOF PLAN
BP
CF
BOZEMAN YARDS SOUTH
BUILDING
22-106
805 NORTH IDA
BOZEMAN, MT 59715
JACKADOO LP.
SITE PLAN APPLICATION
KEYNOTES - ROOF PLAN
1 RIDGE VENT
2 CONC. MECHANICAL ROOF PLATFORM
3 PRIMARY AND OVERFLOW ROOF DRAINS. SEE PLUMBING DRAWINGS.
4 ROOF HATCH.
5 ICE DAM PROTECTION
6 MECHANICAL SCREEN
7 ROOF COPING
8 ELEVATOR PENTHOUSE
9 WALL PERIMETER BELOW
NORTH
1/8" = 1'-0"A2.30
1 ROOF PLAN
NO.DATE REVISION DESCRIPTION
010