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LICENSED A RCHITECT
<br />STATEOF CALIFORNIA
<br />No. C 31423
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<br />© ASPEN STREET 2026
<br />KEY PLAN
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<br />B C D E F G H I J
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<br />JOB:
<br />SHEET NO.
<br />AGENCY NO.
<br />AGENCY APPROVALS
<br />ON
<br />FO
<br />R
<br />DRAWING TITLE
<br />DR. BY:
<br />215021.51
<br />AS SHOWN
<br />Modesto, CA 95351
<br />w w w . n e x u s e n g i n e e r i n g . n e t
<br />Tel: 209.572.7399 Fax: 209.236.1579
<br />1400 Lone Palm Ave, Suite A
<br />Consulting Mechanical Engineers
<br />HVAC . Plumbing/Piping . Fire Sprinklers
<br />Process/Plant Engineering . Refrigeration
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<br />CITY RESUBMITTAL 01
<br />2/6/2026
<br />MECHANICAL
<br />DETAILS
<br />12"
<br />PROVIDE 3/8"ø x 2" LONG
<br />LAG BOLT & WASHER.
<br />ONE AT EACH CORNER OF
<br />ATTACH TO (E) ROOF
<br />WITH 3/8"DIA HILTI KB-TZ2,
<br />2-1/2" MIN. EMBEDMENT,
<br />MIN. (2) EXPANSION ANCHOR
<br />THY TEMS-3 (18 GA)
<br />MOUNTING SUPPORT
<br />NOTE: UNIT SHALL BE INSTALLED LEVEL. PROVIDE
<br />SLEEPERS AS NECESSARY TO MATCH ROOF PITCH.
<br />(E) CONCRETE SLAB
<br />23-5/8"
<br />251 LBS UNIT AT INSTALLATION FEET
<br />16 13/32"
<br />52-11/16"
<br />8-27/32"
<br />PROVIDE CANT STRIPS
<br />AND FLASHING. REROOF
<br />FOR WATER TIGHT FIT
<br />CURB (2 PLACES)
<br />8-27/32"
<br />23-5/8"
<br />8-27/32"8-27/32"
<br />LAG BOLT
<br />CONDENSER
<br />CURB
<br />13"
<br />SIDE VIEW
<br />TOP VIEW
<br />REFRIGERANT CONNECTIONS
<br />SCALE:
<br /> CONDENSING UNIT MOUNTING DETAIL
<br />M300 N/A
<br />1
<br />BOLTS AT EA. END OF CURB, (4)
<br />A.B. AT EACH CURB, MIN. (8)
<br />EXPANSION ANCHOR BOLTS
<br />FOR EQUIPMENT ANCHORAGE.
<br />DUCT PERIMETER
<br />P/2 = 30"
<br />SPECIAL ANALYSIS REQUIRED
<br />-
<br />STRAP
<br />1"x0.030" (22 GA)
<br />1"x0.058" (16 GA)
<br />1-1/2"x0.058" (16 GA)
<br />1"x0.047" (18 GA)
<br />MAXIMUM HALF OF PAIR @ 10'-0" SPACING
<br />P/2 = 72"
<br />P/2 = 96"
<br />P/2 = 120"
<br />P/2 = 168"
<br />P/2 = 192"
<br />P/2 > 193"
<br />WIRE/ROD
<br />10 GA
<br />3/8"
<br />1/2"
<br />10 GA1"x0.030" (22 GA)
<br />1-1/2"x0.058" (16 GA)
<br />1"x0.058" (16 GA)
<br />1"x0.047" (18 GA)
<br />1"x0.036" (20 GA)
<br />1-1/2"x0.058" (16 GA)
<br />1/4"
<br />PAIR @ 8'-0" SPACING
<br />STRAP WIRE/ROD
<br />1"x0.058" (16 GA)
<br />1"x0.058" (16 GA)
<br />1"x0.047" (18 GA)
<br />1"x0.036" (20 GA)
<br />1"x0.030" (22 GA)
<br />1"x0.030" (22 GA)12 GA
<br />PAIR @ 5'-0" SPACING
<br />STRAP WIRE/ROD
<br />12 GA1"x0.030" (22 GA)
<br />1"x0.058" (16 GA)
<br />1"x0.047" (18 GA)
<br />1"x0.036" (20 GA)
<br />1"x0.030" (22 GA)
<br />1"x0.030" (22 GA)
<br />PAIR @ 4'-0" SPACING
<br />STRAP WIRE/ROD
<br />WHENSTRAPS ARE LAP-JOINED, USE THESE MINIMUM FASTENERS:
<br />1"x0.047", 0.036" 0.030" - TWO NO. 10 OR ONE 1/4" BOLT
<br />1"x0.058" - TWO 1/4" BOLT
<br />1-1/2"x0.058" - TWO 3/8" BOLT
<br />PLACE FASTENERS IN SERIES, NOT SIDE-BY-SIDE.
<br />MAX LOAD SCHEDULE
<br />STRAP WIRE OR ROD (DIA.)
<br />1"x0.030" - 260 LBS
<br />1"x0.036" - 320 LBS
<br />1"x0.047" - 420 LBS
<br />1"x0.058" - 700 LBS
<br />1-1/2"x0.030" - 1100 LBS 3/8" - 680 LBS
<br />1/4" - 270 LBS
<br />0.162" - 160 LBS
<br />0.135" - 120 LBS
<br />0.106" - 80 LBS
<br />1/2" - 1250 LBS
<br />5/8" - 2000 LBS
<br />3/4" - 3000 LBS
<br />NOTES:
<br />1.
<br />2.
<br />EXTERNAL LOADS.
<br />TABLES ALLOW FOR DUCT WEIGHT 1 LB./SF INSULATION WEIGHT NORMAL REINFORCEMENT AND TRAPEZE WEIGHT BUT NO
<br />DIMENSIONS OTHER THAN GAUGE ARE IN INCHES.
<br />STRAPS ARE GALVANIZED STEEL; OTHER MATERIALS ARE UNCOATED STEEL.3.
<br />ALLOWABLE LOADS FOR P/2 ASSUME THAT DUCTS ARE 0.058" (16 GA) MAXIMUM, EXCEPT THAT WHEN MAXIMUM DUCT DIMENSION (W) IS4.
<br />OVER 60", THEN P/2 MAXIMUM IS 1.25W.
<br />5. FOR TRAPEZE SIZES SEE TITLE 24, PART 4, 2001 CALIFORNIA MECHANICAL CODE, APPENDIX A, UMC STANDARD 6-2, TABLE
<br />NUMBER 6-2-B.
<br />6. 12 GA, 10 GA OR 8 GA WIRE IS STEEL OF BLACK-ANNEALED, BRIGHT BASIC OR GALVANIZED TYPE.
<br />DUCT SUPPORT STRAP,
<br />SEE TABLE BELOW FOR DETAILS
<br />GALVANIZED SHEET METAL DUCT
<br />WITH ACOUSTIC LINING, SHEET
<br />METAL DUCT WITH EXTERNAL
<br />INSULATION OR VENT,
<br />SEE PLANS FOR SIZE
<br />#10 x 3/4" SELF-TAPPING S.M. SCREWS
<br />TO ANCHOR STRAPS TO DUCT. ALL
<br />STRAPS TO BE TIGHT AGAINST DUCT.
<br />ACOUSTICAL LINING OR INTERNALLY LINED INSULATION.
<br />SUPPLY & RETURN AIR DUCTS SERVING A HOSPITAL
<br />OR OTHER MEDICAL BUILDING SHALL NOT HAVE
<br />OR GREATER THAN 6 SQUARE FEET REQUIRE
<br />HANGING DUCTS WITH A CROSS-SECTIONAL AREA EQUAL TO
<br />DUCTWORK SHALL CONFORM WITH APPENDIX A,
<br />NOTES:
<br />3.
<br />1.
<br />2.
<br />HANGER MUST BE POSITIVELY ATTACHED TO
<br />THE DUCT WITHIN 2" OF THE TOP OF THE DUCT
<br />4.
<br />1-1/2"x0.058" (16 GA)
<br />3/8"
<br />1/2"
<br />1/2"
<br />3/8"
<br />3/8"
<br />1/2"
<br />1/2"
<br />1/4"
<br />3/8"
<br />3/8"
<br />3/8"
<br />3/8"
<br />3/8"
<br />3/8"
<br />1/4"
<br />1/4"
<br />1/4"
<br />STANDARD 6-2 OF THE CMC.
<br />SEISMIC BRACING IN ACCORDANCE WITH MASON OPM 0043-13
<br />WITH A MINIMUM OF TWO #10 SHEET METAL SCREWS
<br />SCALE:
<br /> ROUND DUCT HANGER DETAIL
<br />M300 NONE
<br />4
<br />SCALE:
<br /> RECTANGULAR DUCT HANGER DETAIL
<br />M300 NONE
<br />5
<br />LINED INSULATION.
<br />81" TO 94"
<br />51" TO 80"
<br />37" TO 50"
<br />25" TOI 36"
<br />19" TO 24"
<br />11" TO 18"
<br />DUCT DIAMETER
<br />12'
<br />12'
<br />12'
<br />MAXIMUM SPACING
<br />< 10"
<br />12'
<br />12'
<br />12'
<br />12'1" x 0.030" (22 GA.)
<br />2 @ 1" x 0.058" (16 GA.)
<br />2 @ 1" x 0.037" (18 GA.)
<br />2 @ 1" x 0.036" (20 GA.)
<br />1" x 0.036" (20 GA.)
<br />1" x 0.030" (22 GA.)
<br />1" x 0.030" (22 GA.)
<br />2 @ 3/8"
<br />2 @ 3/8"
<br />2 @ 3/8"
<br />ROD DIAMETER
<br />1/4"
<br />1/4"
<br />3/8"
<br />1/4"
<br />STRAP
<br />SUPPLY & RETURN AIR DUCTS SERVING A HOSPITAL OR OTHER
<br />MEDICAL BUILDING SHALL NOT HAVE ACOUSTICAL LINING OR INTERNALLY
<br />SQUARE FEET REQUIRE SEISMIC BRACING IN ACCORDANCE WITH MASON OPM 0043-13.
<br />HANGING DUCTS WITH A CROSS-SECTIONAL AREA EQUAL TO OR GREATER THAN 6
<br />DUCTWORK SHALL CONFORM WITH APPENDIX A, STANDARD 6-2 OF THE CMC.
<br />NOTES:
<br />3.
<br />1.
<br />2.
<br />DUCT SUPPORT STRAP,
<br />SEE TABLE BELOW FOR DETAILS
<br />GALVANIZED SHEET METAL DUCT
<br />WITH ACOUSTIC LINING, SHEET
<br />METAL DUCT WITH EXTERNAL
<br />INSULATION OR VENT,
<br />SEE PLANS FOR SIZE
<br />#10 x 3/4" SELF-TAPPING S.M. SCREWS
<br />TO ANCHOR STRAPS TO DUCT. ALL
<br />STRAPS TO BE TIGHT AGAINST DUCT.
<br />EACH OF THREE SIDES AS SHOWN.
<br />SCALE:
<br /> TYPICAL REGISTER DETAIL
<br />M300 NONE
<br />6
<br />T-BAR CEILING
<br />FRAME TO MATCH CEILING TYPE
<br />DAMPER (WHEN SPECIFIED)
<br />OPERABLE FROM FACE
<br />TRANSITION AS NEEDED
<br />24 GA SHEET METAL TAB WITH
<br />#12 SM SCREW (TYP. 4 PLACES)
<br />DRAWBAND - ENTIRE FLEX DUCT ASSEMBLY.
<br /> LEAVE NO EXPOSED INSULATION
<br /> INSIDE OR OUT.
<br />DRAWBAND - INNER LINER AND HELIX ONLY
<br />MANUAL BALANCE DAMPER
<br />FLEXIBLE FIBERGLASS
<br />DUCT (5' MAX. LENGTH)
<br />2"MIN 26 GA
<br />HANGER SADDLE
<br />INSULATED SHEET
<br />METAL DUCT
<br />HARD CEILING
<br />FLEXIBLE DUCT NOTES:
<br /> FIVE (5) FEET.
<br /> RADIUS TURNS OR OFFSETS. THE MAXIMUM LENGTH SHALL BE
<br />2. INSTALLATION OF FLEXIBLE DUCTS SHALL MINIMIZE SHARP
<br /> WIRE HELIX AND IMPERVIOUS, SMOOTH, NON-PERFORATED INTERIOR
<br /> VINYL LINER.
<br /> (PER CEC STANDARDS), ENCAPSULATED SPRING STEEL
<br /> LAMINATED VAPOR BARRIER, FIBER GLASS INSULATION
<br />1. CONNECT TO EXISTING FLEXIBLE DUCT WHERE INDICATED. ANY
<br />CONICAL OR 45° LEAD IN,
<br />AVOID STRAIGHT TAP
<br />DUCT MAIN
<br />EXAMPLE
<br />POSITIVELY ATTACH REGISTER
<br />TO CEILING WITH CLIP OR SIMILAR
<br /> NEW FLEXIBLE DUCTS SHALL CONSIST OF AN EXTERIOR REINFORCED
<br />TO UPPER ATTACHMENT - SEE HVAC DUCT
<br />CONSTRUCTION STANDARDS - METAL AND
<br />FLEXIBLE, THIRD EDITION, SMACNA - 2006,
<br />FIGURES 5-2, 5-3 AND 5-4. PROVIDE FRAMING,
<br />BLOCKING OR STRUCTURAL MEMBER AS MAY
<br />BE REQUIRED.
<br />TO UPPER ATTACHMENT - SEE HVAC DUCT
<br />CONSTRUCTION STANDARDS - METAL AND
<br />FLEXIBLE, THIRD EDITION, SMACNA - 2006,
<br />FIGURES 5-2, 5-3 AND 5-4. PROVIDE FRAMING,
<br />BLOCKING OR STRUCTURAL MEMBER AS MAY
<br />BE REQUIRED.
<br />SCALE:
<br />2
<br />M300 N/A
<br /> AC UNIT MOUNTING DETAIL (AC-1)
<br />24 GAGE GALV. SM
<br />MOUNTING CHANNEL ON UNIT
<br />COUNTER FLASHING
<br />3/8"ø x 3" LONG LAG BOLT &
<br />WASHER, MIN. 2 PER SIDE,
<br />ROOFING UP UNDER FLASHING BY OTHERS
<br />NEOPRENE SPONGE GASKET
<br />797 LBS
<br />1/2"ø HILTI KB-TZ2 EXPANSION ANCHORS @ MAX 2'-0" O.C.
<br />PRESLOPED FACTORY CURB
<br />HVAC UNIT TO BE LEVEL.
<br />ASSEMBLY FOR HVAC UNIT.
<br />24 GAGE GALV. SHEET METAL
<br />FIBERGLASS INSULATING BOARD
<br />WITH 2" OF 3-1/2lb DENSITY
<br />LINE TOP OF ROOF INSIDE CURB
<br />24" OC MAX.
<br />WOOD NAILER
<br />FULL CURB CAP,
<br />RIGID INSULATION
<br />2" WIDE x 1/4" THK. CONTINUOUS
<br />AC-1
<br />SCALE:
<br />3
<br />M300 N/A
<br /> AC UNIT MOUNTING DETAIL (AC-2)
<br />24 GAGE GALV. SM
<br />MOUNTING CHANNEL ON UNIT
<br />COUNTER FLASHING
<br />3/8"ø x 3" LONG LAG BOLT &
<br />WASHER, MIN. 2 PER SIDE,
<br />EXTEND ROOFING UP
<br />(N) ROOF
<br />& UNDER COUNTER FLASHING
<br />NEOPRENE SPONGE GASKET
<br />359 LBS
<br />3" MIN EMBED, MAX. 3" FROM EACH CURB EDGE.
<br />1/2"ø LAG BOLTS @ 2'-0" O.C.,
<br />PRESLOPED FACTORY CURB
<br />HVAC UNIT TO BE LEVEL.
<br />ASSEMBLY FOR HVAC UNIT.
<br />24 GAGE GALV. SHEET METAL
<br />FIBERGLASS INSULATING BOARD
<br />WITH 2" OF 3-1/2lb DENSITY
<br />LINE TOP OF ROOF INSIDE CURB
<br />FACTORY-SLOPED CURB SHALL BEAR DIRECTLY ON ROOF.
<br />24" OC MAX.
<br />WOOD NAILER
<br />FULL CURB CAP,
<br />RIGID INSULATION
<br />2" WIDE x 1/4" THK. CONTINUOUS
<br />SEE STRUCTURAL FOR BLOCKING
<br />AC-2
<br />FACTORY-SLOPED CURB SHALL BEAR DIRECTLY ON ROOF.
<br />CONTINUOUS FIBER CANT STRIP
<br />BY ROOFER AS NECESSARY.CONTINUOUS FIBER CANT STRIP
<br />BY ROOFER AS NECESSARY.
<br />(E) CONCRETE SLAB
<br />NEW ROOFING & INSULATION BY OTHERS
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