Prepared For:

PROVENT

3847 Wabash Dr. Mira Loma, CA 91725

951.685.1101

Prepared By:

Lyons Warren Engineers + Architects

9560 Candida Street, San Diego, CA 92126

858.573.8999

Job No.: PRO1204 E1/E2

Effective Date: 20150423

Structural Calculations

Roof Curbs for York Units Sunline 15-25 York Units

ZJ / ZR 180-300: ZF 210-300: XP 180-240

Provent P/N 80-268-1814 & 80-268-1818

Form No: CBKD - 91

4/24/15exp: 2/28/17

4/24/15exp: 2/28/17

4/24/15exp: 2/28/17

HVAC UNIT: Sunline 15-25 Heaviest

PROVENT STEEL CURB DESIGN

PROVENT PART NUMBER:80-268-1814 14in curb

Curb Information

Curb Number:

Hcurb 14 (Height from support structure to top of curb)

Lcurb 122.25 (Length of Curb - In to In)

Wcurb 80 (Width of Curb - In to In)

Lclip 89.125 (min Length in Long dir from end to clip)

# clips Long Side 2 (Shear + Uplift Clips)

# clips short side 2 (Shear Clips)

Unit Information:

Weight: 3350 lbs (Weight of Unit - min weight governs design)

W c-max 1065 lbs (Maximum corner weight)

W c-min 470 lbs (Minimum corner weight)

W mid 323 lbs (load B or E, 6 point load criteria for York curbs)

H unit 53 in (Height of unit above curb)

H cm 26 in (Height from top of curb to center of mass of unit)

L unit 181 in (Length of unit)

w unit 92 in (Width of unit)

Seismic Loading (2014 FBC)

Ss 0.2 (worst case for Florida State)

Fa 2.5 (worst case for site; Ss<0.25, Site Class E)

Sms 0.5 (=Fa*Ss)

Sds 0.33 (=2/3*Sms)

Ip 1.5 (=Worst case)

ap 2.5

Rp 6

Fp max 0.3 Wp (=0.4*ap*Sds*Wp*(1+2*z/h)/(Rp/Ip))

Fp ASD 602 lbs (=0.7*Fpmax)

Wind Loading (2014 FBC)

Wind Exposure: D

V 185 mph (Ultimate Wind Speed - Worst case:

Kzt 1.66

Kd 0.9

Kh 1.31 (Worst Case for 60 foot roof height)

GCf 3.1

qh 171 psf (ASD=0.6W)

F 532 psf (ultimate) F 319 psf (service)

A net/transv. 66 sf

Fwind transv 35065 lbs (ultimate) Fwind trnsv 21039 lbs (service)

A net/long 34 sf

Fwind long 17872 lbs (ultimate) Fwind long 10723 psf (service)

Controlling Lateral Load (Seismic vs. Wind)

Transverse 21039 lbs (ASD)

Long 10723 lbs (ASD)

page 1

Lyons Warren

Engineers Architects

9580 Candida Street

San Diego, CA 92126 (858) 573-8999

HVAC UNIT: Sunline 15-25 Heaviest

PROVENT STEEL CURB DESIGN

PROVENT PART NUMBER:80-268-1814 14in curb

Wind Loading: Uplift (2014 FBC) 29.5-2 (GC=3.1 - FBC2014)

qh 171.5 psf

GCr 1.5

Fv (psf) 257.2 psf (ultimate)

Av 115 sf

Fv 29662 lbs (ultimate) Fv 17797 lbs (ASD: 0.6W)

Curb Loading:

Transverse direction:

OTM: 46132 lb-ft 0.6W: F max - transv * Hcm

M res. 3960 lb-ft 0.6D: 2 * Wcrnmin *0.6* (width curb +4.25")

Net OTM: 42173 lb-ft 0.6D+0.6W: OTM-RM

Max Comp 7761 lbs /side 1.0D+0.6W: (2 x Wcrnmax + (Mot-Mres)/ (width curb +4.25"))

Max Tension 14905 lbs /side 0.6D+0.6W: (Mot-Mres)/(width curb +4.25")) + Fv/(2 sides)

Max Tension 7453 lbs /clip 0.6D+0.6W: Max tension/side /#clips

Max Corner: 1753 lbs W c-max+ (Mot-Mres)/((w/curb+4.25")/Lcurb*(N-corner)/2/12

Max Interior: 1699 lbs W mid+ (Mot-Mres)/(width curb +4.25")/Lcurb*(N-mid)

Longitudinal direction:

OTM: 23513 lb-ft 0.6W: F max long * Hcm

RM 5957 lb-ft 0.6D: 2 X Wcrnmin x (Lcurb+4.25in)/12 x 0.6

Net OTM: 17556 lb-ft 0.6D+0.6W: OTM-RM

Max Comp = 3959 lbs /side 1.0D+0.6W: (2*Wcmax + (NetOTM)/Lclip)+ Fv/(U.C)

Max Tens = 11262 lbs /side 0.6D+0.6W: (Mot-Mres)/Lclip) + Fv/(2 sides)

Max Tension = 6813 lbs /clip 0.6D+0.6W: (Mot-Mres)/Lclip) + Fv/(2 sides)/#clips/side

Max Corner: 1367 lbs W c-max+ (Mot-Mres)/Lcurb/Wcurb*(N-corner)/2

Connection of Unit to Curb

Screws in Uplift clips (Attach with 1/4 SMS into 14mil) Vall= 933 lbs/screw

Screws in Short Side Clips (Attach with #12 SMS into 14mil) Vall= 870 lbs/screw

UPLIFT CLIPS: UPLIFT CLIPS:

Shear: 2681 lbs/clip 6 1/4" screws/clip

Uplift: 7453 lbs/clip Fdiag/screw 765 lbs/screw

F diag 4590 lbs/clip to curb F/screw outs. 621 lbs/screw

SCREWS OK

SHORTSIDE CLIPS SHORTSIDE CLIPS

Shear: 2681 lbs/clip 4 #12 screws/clip

F screw 670 lbs/screw

SCREWS OK

page 2

Lyons Warren

Engineers Architects

9580 Candida Street

San Diego, CA 92126 (858) 573-8999

HVAC UNIT: Sunline 15-25 Heaviest

PROVENT STEEL CURB DESIGN

PROVENT PART NUMBER:80-268-1814 14in curb

Curb info

H curb 14 in, curb height

Fy 50 ksi

E 29000 ksi

Fu 65 ksi

gage: 14

R 0.1069

t 0.0713

R/t 1.50

h 13.71 in

Interior Curb

N 28 bearing length: 2*h

C 20

CR 0.1

CN 0.08

Ch 0.03

φw 0.85

Ωw 1.75

Pn 6.73 k

Pall 3.85 k

φPn 5.72 k

Pmax 1.70 k Pall>Pmax,curb OK,

Exterior Curb:

N total 28 2*curb height

N -BUS 1 bearing length with stiffener (built up section)

N - SWC 27 bearing length without stiffener (single web channel)

N 27 N 1

C 7.5 C 15.5

CR 0.08 CR 0.09CN 0.12 CN 0.08

Ch 0.05 Ch 0.04

φw 0.85 φw 0.75

Ωw 1.75 Ωw 2

Pn 1.76 k Pn 4.06 k

Pall 1.00 k Pall 2.03 k Pall 3.03 k

φPn 1.49 k φPn 3.04 k φPn 4.54 k

Pmax 1.75 k

Pall>Pmax,curb OK,

Exterior Curb SWC Exterior Curb BUS

Corner:

Lyons Warren

Engineers Architects

9580 Candida Street

San Diego, CA 92126 (858) 573-8999

HVAC UNIT: Sunline 15-25 Heaviest

PROVENT STEEL CURB DESIGN

PROVENT PART NUMBER:80-268-1814 14in curb

Connection of Curb to Supporting Structure (ASD)

Transverse: 0.6D+0.6W

**Uplift (wind)= 18123 lbs

*Uplift (seismic) -277 lbs

Uplift max= 18123 lbs/long side

**Shear (wind) 24830 lbs

*Shear (seis) 602 lbs

Shear max= 24830 lbs/total curb

Longitudinal:

**Uplift (wind)= 13032 lbs

*Uplift (seismic) -530 lbs T max 18123 lbs/long

Uplift max= 13032 lbs/long side V max 24830 lbs/total

**Shear (wind) 13204 lbs

*Shear (seis) 602 lbs

Shear max= 13204 lbs/total curb

Wood Attachment: (Use 5/8" φ x 5" LAG SCREWS) W' 2284.8 lbs

(4" minimum embed into DF or SP wood) Z' 592 lbs

total screws required= 48

# screws: LONG SIDE 12

# screws: SHORT SIDE 12

W/screw (uplift) 1510 lbs

V/Screw 517 lbs

Angle 71.1 deg

Z (at angle) 1596 lbs

Atkinson Formula: Z' (at angle) 1757 lbs

WOOD SCREWS OK

Steel Deck Attach.: (Use 5/8" φ A307 Bolts attached to L5x5x1/4 below deck at each conn.point)

Tall= 6900 lbs

Vall= 3680 lbs

total bolts required= 16

# bolts: LONG SIDE 6

# bolts: SHORT SIDE 2

T/bolt (uplift) 6516 lbs

V/bolt 1552 lbs

fv 5.0 ksi OK

ft 21.0 ksi OK

Fnt' 39.7 ksi

Fnv 24.0 ksi

BOLTS OK

page 4

Lyons Warren

Engineers Architects

9580 Candida Street

San Diego, CA 92126 (858) 573-8999

HVAC UNIT: Sunline 15-25 Heaviest

PROVENT STEEL CURB DESIGN

PROVENT PART NUMBER:80-268-1814 14in curb

Connection of Curb to Concrete Supporting Structure - STRENGTH DESIGN

Transverse: 0.9D +1.0(E or W)

**Uplift (wind)= 30299 lbs

*Uplift (seismic) 1288 lbs *Rp*1.3/1.5/0.7asd

Uplift max= 30299 lbs/side (Per long side curb)

**Shear (wind) 41383 lbs (Maximum Lateral Force) (seismic: Rp=1.5 max)

*Shear (seis) 4472 lbs *Rp*1.3/1.5/0.7asd

Shear max= 41383 lbs (Total Curb)

Longitudinal:

**Uplift (wind)= 21853 lbs

*Uplift (seismic) 820 lbs Tu max 30299 lbs

Uplift max= 21853 lbs/side (Per long side curb) Vu max 41383 lbs

**Shear (wind) 22007 lbs

*Shear (seis) 4472 lbs

Shear max= 22007 lbs (Total Curb)

Concrete Attach.: (Use 5/8"φ Simpson Strong Bolt 2) phi-Tn 2900 lbs

phi-Vn 1200 lbs

(LRFD design)

Anchors Required for Uplift (long side only)= 10.4

Anchors Required for Shear (Total Curb)= 34.5

Anchors Required (long side only) = 11.0

anchors (long side) 12.0 OK

Simpson Strong Bolt 2 anchors (short side) 8.0

3 5/8" Embed anchors (total) 40 OK

(f'c=4000psi, 6" min total thickness - normal weight concrete) Tu 2525 OK

ESR Report - 3037 Vu 1035 OK

Special Inspection Required

*Uplift and Shear seismic anchorage forces have been designed for an Rp of 1.5 max per ASCE 13.4.2

Anchorage design per ASCE 14.2.2.17/ACI D3.3 with strength reduction factors

not required in combination with Rp=1.5

** For wind force, shear at base for anchorage design, accounts for add'l area from curb width and height

page 5

Conc Anchors

Lyons Warren

Engineers Architects

9580 Candida Street

San Diego, CA 92126 (858) 573-8999

HVAC UNIT: Sunline 15-25 lightest

PROVENT STEEL CURB DESIGN

PROVENT PART NUMBER:80-268-1814 14in curb

Curb Information

Curb Number:

Hcurb 14 (Height from support structure to top of curb)

Lcurb 122.25 (Length of Curb - In to In)

Wcurb 80 (Width of Curb - In to In)

Lclip 89.125 (min Length in Long dir from end to clip)

# clips Long Side 2 (Shear + Uplift Clips)

# clips short side 2 (Shear Clips)

Unit Information:

Weight: 2006 lbs (Weight of Unit - min weight governs design)

W c-max 534 lbs (Maximum corner weight)

W c-min 470 lbs (Minimum corner weight)

W mid 323 lbs (load B or E, 6 point load criteria for York curbs)

H unit 53 in (Height of unit above curb)

H cm 26 in (Height from top of curb to center of mass of unit)

L unit 181 in (Length of unit)

w unit 92 in (Width of unit)

Seismic Loading (2014 FBC)

Ss 0.2 (worst case for Florida State)

Fa 2.5 (worst case for site; Ss<0.25, Site Class E)

Sms 0.5 (=Fa*Ss)

Sds 0.33 (=2/3*Sms)

Ip 1.5 (=Worst case)

ap 2.5

Rp 6

Fp max 0.3 Wp (=0.4*ap*Sds*Wp*(1+2*z/h)/(Rp/Ip))

Fp ASD 361 lbs (=0.7*Fpmax)

Wind Loading (2014 FBC)

Wind Exposure: D

V 185 mph (Ultimate Wind Speed - Worst case:

Kzt 1.66

Kd 0.9

Kh 1.31 (Worst Case for 60 foot roof height)

GCf 3.1

qh 171 psf (ASD=0.6W)

F 532 psf (ultimate) F 319 psf (service)

A net/transv. 66 sf

Fwind transv 35065 lbs (ultimate) Fwind trnsv 21039 lbs (service)

A net/long 34 sf

Fwind long 17872 lbs (ultimate) Fwind long 10723 psf (service)

Controlling Lateral Load (Seismic vs. Wind)

Transverse 21039 lbs (ASD)

Long 10723 lbs (ASD)

page 1

Lyons Warren

Engineers Architects

9580 Candida Street

San Diego, CA 92126 (858) 573-8999

HVAC UNIT: Sunline 15-25 lightest

PROVENT STEEL CURB DESIGN

PROVENT PART NUMBER:80-268-1814 14in curb

Wind Loading: Uplift (2014 FBC) 29.5-2 (GC=3.1 - FBC2014)

qh 171.5 psf

GCr 1.5

Fv (psf) 257.2 psf (ultimate)

Av 115 sf

Fv 29662 lbs (ultimate) Fv 17797 lbs (ASD: 0.6W)

Curb Loading:

Transverse direction:

OTM: 46132 lb-ft 0.6W: F max - transv * Hcm

M res. 3960 lb-ft 0.6D: 2 * Wcrnmin *0.6* (width curb +4.25")

Net OTM: 42173 lb-ft 0.6D+0.6W: OTM-RM

Max Comp 6699 lbs /side 1.0D+0.6W: (2 x Wcrnmax + (Mot-Mres)/ (width curb +4.25"))

Max Tension 14905 lbs /side 0.6D+0.6W: (Mot-Mres)/(width curb +4.25")) + Fv/(2 sides)

Max Tension 7453 lbs /clip 0.6D+0.6W: Max tension/side /#clips

Max Corner: 1222 lbs W c-max+ (Mot-Mres)/((w/curb+4.25")/Lcurb*(N-corner)/2/12

Max Interior: 1699 lbs W mid+ (Mot-Mres)/(width curb +4.25")/Lcurb*(N-mid)

Longitudinal direction:

OTM: 23513 lb-ft 0.6W: F max long * Hcm

RM 5957 lb-ft 0.6D: 2 X Wcrnmin x (Lcurb+4.25in)/12 x 0.6

Net OTM: 17556 lb-ft 0.6D+0.6W: OTM-RM

Max Comp = 2897 lbs /side 1.0D+0.6W: (2*Wcmax + (NetOTM)/Lclip)+ Fv/(U.C)

Max Tens = 11262 lbs /side 0.6D+0.6W: (Mot-Mres)/Lclip) + Fv/(2 sides)

Max Tension = 6813 lbs /clip 0.6D+0.6W: (Mot-Mres)/Lclip) + Fv/(2 sides)/#clips/side

Max Corner: 836 lbs W c-max+ (Mot-Mres)/Lcurb/Wcurb*(N-corner)/2

Connection of Unit to Curb

Screws in Uplift clips (Attach with 1/4 SMS into 14mil) Vall= 933 lbs/screw

Screws in Short Side Clips (Attach with #12 SMS into 14mil) Vall= 870 lbs/screw

UPLIFT CLIPS: UPLIFT CLIPS:

Shear: 2681 lbs/clip 6 1/4" screws/clip

Uplift: 7453 lbs/clip Fdiag/screw 765 lbs/screw

F diag 4590 lbs/clip to curb F/screw outs. 621 lbs/screw

SCREWS OK

SHORTSIDE CLIPS SHORTSIDE CLIPS

Shear: 2681 lbs/clip 4 #12 screws/clip

F screw 670 lbs/screw

SCREWS OK

page 2

Lyons Warren

Engineers Architects

9580 Candida Street

San Diego, CA 92126 (858) 573-8999

HVAC UNIT: Sunline 15-25 lightest

PROVENT STEEL CURB DESIGN

PROVENT PART NUMBER:80-268-1814 14in curb

Curb info

H curb 14 in, curb height

Fy 50 ksi

E 29000 ksi

Fu 65 ksi

gage: 14

R 0.1069

t 0.0713

R/t 1.50

h 13.71 in

Interior Curb

N 28 bearing length: 2*h

C 20

CR 0.1

CN 0.08

Ch 0.03

φw 0.85

Ωw 1.75

Pn 6.73 k

Pall 3.85 k

φPn 5.72 k

Pmax 1.70 k Pall>Pmax,curb OK,

Exterior Curb:

N total 28 2*curb height

N -BUS 1 bearing length with stiffener (built up section)

N - SWC 27 bearing length without stiffener (single web channel)

N 27 N 1

C 7.5 C 15.5

CR 0.08 CR 0.09CN 0.12 CN 0.08

Ch 0.05 Ch 0.04

φw 0.85 φw 0.75

Ωw 1.75 Ωw 2

Pn 1.76 k Pn 4.06 k

Pall 1.00 k Pall 2.03 k Pall 3.03 k

φPn 1.49 k φPn 3.04 k φPn 4.54 k

Pmax 1.22 k

Pall>Pmax,curb OK,

Exterior Curb SWC Exterior Curb BUS

Corner:

Lyons Warren

Engineers Architects

9580 Candida Street

San Diego, CA 92126 (858) 573-8999

HVAC UNIT: Sunline 15-25 lightest

PROVENT STEEL CURB DESIGN

PROVENT PART NUMBER:80-268-1814 14in curb

Connection of Curb to Supporting Structure (ASD)

Transverse: 0.6D+0.6W

**Uplift (wind)= 18123 lbs

*Uplift (seismic) -392 lbs

Uplift max= 18123 lbs/long side

**Shear (wind) 24830 lbs

*Shear (seis) 361 lbs

Shear max= 24830 lbs/total curb

Longitudinal:

**Uplift (wind)= 13032 lbs

*Uplift (seismic) -639 lbs T max 18123 lbs/long

Uplift max= 13032 lbs/long side V max 24830 lbs/total

**Shear (wind) 13204 lbs

*Shear (seis) 361 lbs

Shear max= 13204 lbs/total curb

Wood Attachment: (Use 5/8" φ x 5" LAG SCREWS) W' 2284.8 lbs

(4" minimum embed into DF or SP wood) Z' 592 lbs

total screws required= 48

# screws: LONG SIDE 12

# screws: SHORT SIDE 12

W/screw (uplift) 1510 lbs

V/Screw 517 lbs

Angle 71.1 deg

Z (at angle) 1596 lbs

Atkinson Formula: Z' (at angle) 1757 lbs

WOOD SCREWS OK

Steel Deck Attach.: (Use 5/8" φ A307 Bolts attached to L5x5x1/4 below deck at each conn.point)

Tall= 6900 lbs

Vall= 3680 lbs

total bolts required= 16

# bolts: LONG SIDE 6

# bolts: SHORT SIDE 2

T/bolt (uplift) 6516 lbs

V/bolt 1552 lbs

fv 5.0 ksi OK

ft 21.0 ksi OK

Fnt' 39.7 ksi

Fnv 24.0 ksi

BOLTS OK

page 4

Lyons Warren

Engineers Architects

9580 Candida Street

San Diego, CA 92126 (858) 573-8999

HVAC UNIT: Sunline 15-25 lightest

PROVENT STEEL CURB DESIGN

PROVENT PART NUMBER:80-268-1814 14in curb

Connection of Curb to Concrete Supporting Structure - STRENGTH DESIGN

Transverse: 0.9D +1.0(E or W)

**Uplift (wind)= 30299 lbs

*Uplift (seismic) 432 lbs *Rp*1.3/1.5/0.7asd

Uplift max= 30299 lbs/side (Per long side curb)

**Shear (wind) 41383 lbs (Maximum Lateral Force) (seismic: Rp=1.5 max)

*Shear (seis) 2678 lbs *Rp*1.3/1.5/0.7asd

Shear max= 41383 lbs (Total Curb)

Longitudinal:

**Uplift (wind)= 21853 lbs

*Uplift (seismic) 8 lbs Tu max 30299 lbs

Uplift max= 21853 lbs/side (Per long side curb) Vu max 41383 lbs

**Shear (wind) 22007 lbs

*Shear (seis) 2678 lbs

Shear max= 22007 lbs (Total Curb)

Concrete Attach.: (Use 5/8"φ Simpson Strong Bolt 2) phi-Tn 2900 lbs

phi-Vn 1200 lbs

(LRFD design)

Anchors Required for Uplift (long side only)= 10.4

Anchors Required for Shear (Total Curb)= 34.5

Anchors Required (long side only) = 11.0

anchors (long side) 12.0 OK

Simpson Strong Bolt 2 anchors (short side) 8.0

3 5/8" Embed anchors (total) 40 OK

(f'c=4000psi, 6" min total thickness - normal weight concrete) Tu 2525 OK

ESR Report - 3037 Vu 1035 OK

Special Inspection Required

*Uplift and Shear seismic anchorage forces have been designed for an Rp of 1.5 max per ASCE 13.4.2

Anchorage design per ASCE 14.2.2.17/ACI D3.3 with strength reduction factors

not required in combination with Rp=1.5

** For wind force, shear at base for anchorage design, accounts for add'l area from curb width and height

page 5

Conc Anchors

Lyons Warren

Engineers Architects

9580 Candida Street

San Diego, CA 92126 (858) 573-8999

HVAC UNIT: Sunline 15-25 Heaviest

PROVENT STEEL CURB DESIGN

PROVENT PART NUMBER:80-268-1818 18in curb

Curb Information

Curb Number:

Hcurb 18 (Height from support structure to top of curb)

Lcurb 122.25 (Length of Curb - In to In)

Wcurb 80 (Width of Curb - In to In)

Lclip 89.125 (min Length in Long dir from end to clip)

# clips Long Side 2 (Shear + Uplift Clips)

# clips short side 2 (Shear Clips)

Unit Information:

Weight: 3350 lbs (Weight of Unit - min weight governs design)

W c-max 1065 lbs (Maximum corner weight)

W c-min 470 lbs (Minimum corner weight)

W mid 323 lbs (load B or E, 6 point load criteria for York curbs)

H unit 53 in (Height of unit above curb)

H cm 26 in (Height from top of curb to center of mass of unit)

L unit 181 in (Length of unit)

w unit 92 in (Width of unit)

Seismic Loading (2014 FBC)

Ss 0.2 (worst case for Florida State)

Fa 2.5 (worst case for site; Ss<0.25, Site Class E)

Sms 0.5 (=Fa*Ss)

Sds 0.33 (=2/3*Sms)

Ip 1.5 (=Worst case)

ap 2.5

Rp 6

Fp max 0.3 Wp (=0.4*ap*Sds*Wp*(1+2*z/h)/(Rp/Ip))

Fp ASD 604 lbs (=0.7*Fpmax)

Wind Loading (2014 FBC)

Wind Exposure: D

V 185 mph (Ultimate Wind Speed - Worst case:

Kzt 1.66

Kd 0.9

Kh 1.31 (Worst Case for 60 foot roof height)

GCf 3.1

qh 171 psf (ASD=0.6W)

F 532 psf (ultimate) F 319 psf (service)

A net/transv. 66 sf

Fwind transv 35065 lbs (ultimate) Fwind trnsv 21039 lbs (service)

A net/long 34 sf

Fwind long 17872 lbs (ultimate) Fwind long 10723 psf (service)

Controlling Lateral Load (Seismic vs. Wind)

Transverse 21039 lbs (ASD)

Long 10723 lbs (ASD)

page 1

Lyons Warren

Engineers Architects

9580 Candida Street

San Diego, CA 92126 (858) 573-8999

HVAC UNIT: Sunline 15-25 Heaviest

PROVENT STEEL CURB DESIGN

PROVENT PART NUMBER:80-268-1818 18in curb

Wind Loading: Uplift (2014 FBC) 29.5-2 (GC=3.1 - FBC2014)

qh 171.5 psf

GCr 1.5

Fv (psf) 257.2 psf (ultimate)

Av 115 sf

Fv 29662 lbs (ultimate) Fv 17797 lbs (ASD: 0.6W)

Curb Loading:

Transverse direction:

OTM: 46132 lb-ft 0.6W: F max - transv * Hcm

M res. 3960 lb-ft 0.6D: 2 * Wcrnmin *0.6* (width curb +4.25")

Net OTM: 42173 lb-ft 0.6D+0.6W: OTM-RM

Max Comp 7761 lbs /side 1.0D+0.6W: (2 x Wcrnmax + (Mot-Mres)/ (width curb +4.25"))

Max Tension 14905 lbs /side 0.6D+0.6W: (Mot-Mres)/(width curb +4.25")) + Fv/(2 sides)

Max Tension 7453 lbs /clip 0.6D+0.6W: Max tension/side /#clips

Max Corner: 1949 lbs W c-max+ (Mot-Mres)/((w/curb+4.25")/Lcurb*(N-corner)/2/12

Max Interior: 2092 lbs W mid+ (Mot-Mres)/(width curb +4.25")/Lcurb*(N-mid)

Longitudinal direction:

OTM: 23513 lb-ft 0.6W: F max long * Hcm

RM 5957 lb-ft 0.6D: 2 X Wcrnmin x (Lcurb+4.25in)/12 x 0.6

Net OTM: 17556 lb-ft 0.6D+0.6W: OTM-RM

Max Comp = 3959 lbs /side 1.0D+0.6W: (2*Wcmax + (NetOTM)/Lclip)+ Fv/(U.C)

Max Tens = 11262 lbs /side 0.6D+0.6W: (Mot-Mres)/Lclip) + Fv/(2 sides)

Max Tension = 6813 lbs /clip 0.6D+0.6W: (Mot-Mres)/Lclip) + Fv/(2 sides)/#clips/side

Max Corner: 1453 lbs W c-max+ (Mot-Mres)/Lcurb/Wcurb*(N-corner)/2

Connection of Unit to Curb

Screws in Uplift clips (Attach with 1/4 SMS into 14mil) Vall= 933 lbs/screw

Screws in Short Side Clips (Attach with #12 SMS into 14mil) Vall= 870 lbs/screw

UPLIFT CLIPS: UPLIFT CLIPS:

Shear: 2681 lbs/clip 6 1/4" screws/clip

Uplift: 7453 lbs/clip Fdiag/screw 765 lbs/screw

F diag 4590 lbs/clip to curb F/screw outs. 621 lbs/screw

SCREWS OK

SHORTSIDE CLIPS SHORTSIDE CLIPS

Shear: 2681 lbs/clip 4 #12 screws/clip

F screw 670 lbs/screw

SCREWS OK

page 2

Lyons Warren

Engineers Architects

9580 Candida Street

San Diego, CA 92126 (858) 573-8999

HVAC UNIT: Sunline 15-25 Heaviest

PROVENT STEEL CURB DESIGN

PROVENT PART NUMBER:80-268-1818 18in curb

Curb info

H curb 18 in, curb height

Fy 50 ksi

E 29000 ksi

Fu 65 ksi

gage: 14

R 0.1069

t 0.0713

R/t 1.50

h 17.71 in

Interior Curb

N 36 bearing length: 2*h

C 20

CR 0.1

CN 0.08

Ch 0.03

φw 0.85

Ωw 1.75

Pn 6.58 k

Pall 3.76 k

φPn 5.59 k

Pmax 2.09 k Pall>Pmax,curb OK,

Exterior Curb:

N total 36 2*curb height

N -BUS 1 bearing length with stiffener (built up section)

N - SWC 35 bearing length without stiffener (single web channel)

N 35 N 1

C 7.5 C 15.5

CR 0.08 CR 0.09CN 0.12 CN 0.08

Ch 0.05 Ch 0.04

φw 0.85 φw 0.75

Ωw 1.75 Ωw 2

Pn 1.33 k Pn 3.37 k

Pall 0.76 k Pall 1.68 k Pall 2.45 k

φPn 1.13 k φPn 2.53 k φPn 3.66 k

Pmax 1.95 k

Pall>Pmax,curb OK,

Exterior Curb SWC Exterior Curb BUS

Corner:

Lyons Warren

Engineers Architects

9580 Candida Street

San Diego, CA 92126 (858) 573-8999

HVAC UNIT: Sunline 15-25 Heaviest

PROVENT STEEL CURB DESIGN

PROVENT PART NUMBER:80-268-1818 18in curb

Connection of Curb to Supporting Structure (ASD)

Transverse: 0.6D+0.6W

**Uplift (wind)= 19164 lbs

*Uplift (seismic) -247 lbs

Uplift max= 19164 lbs/long side

**Shear (wind) 25913 lbs

*Shear (seis) 604 lbs

Shear max= 25913 lbs/total curb

Longitudinal:

**Uplift (wind)= 13609 lbs

*Uplift (seismic) -502 lbs T max 19164 lbs/long

Uplift max= 13609 lbs/long side V max 25913 lbs/total

**Shear (wind) 13913 lbs

*Shear (seis) 604 lbs

Shear max= 13913 lbs/total curb

Wood Attachment: (Use 5/8" φ x 5" LAG SCREWS) W' 2284.8 lbs

(4" minimum embed into DF or SP wood) Z' 592 lbs

total screws required= 48

# screws: LONG SIDE 12

# screws: SHORT SIDE 12

W/screw (uplift) 1597 lbs

V/Screw 540 lbs

Angle 71.3 deg

Z (at angle) 1686 lbs

Atkinson Formula: Z' (at angle) 1767 lbs

WOOD SCREWS OK

Steel Deck Attach.: (Use 5/8" φ A307 Bolts attached to L5x5x1/4 below deck at each conn.point)

Tall= 6900 lbs

Vall= 3680 lbs

total bolts required= 16

# bolts: LONG SIDE 6

# bolts: SHORT SIDE 2

T/bolt (uplift) 6804 lbs

V/bolt 1620 lbs

fv 5.2 ksi OK

ft 21.9 ksi OK

Fnt' 38.9 ksi

Fnv 24.0 ksi

BOLTS OK

page 4

Lyons Warren

Engineers Architects

9580 Candida Street

San Diego, CA 92126 (858) 573-8999

HVAC UNIT: Sunline 15-25 Heaviest

PROVENT STEEL CURB DESIGN

PROVENT PART NUMBER:80-268-1818 18in curb

Connection of Curb to Concrete Supporting Structure - STRENGTH DESIGN

Transverse: 0.9D +1.0(E or W)

**Uplift (wind)= 32033 lbs

*Uplift (seismic) 1508 lbs *Rp*1.3/1.5/0.7asd

Uplift max= 32033 lbs/side (Per long side curb)

**Shear (wind) 43188 lbs (Maximum Lateral Force) (seismic: Rp=1.5 max)

*Shear (seis) 4488 lbs *Rp*1.3/1.5/0.7asd

Shear max= 43188 lbs (Total Curb)

Longitudinal:

**Uplift (wind)= 22815 lbs

*Uplift (seismic) 1028 lbs Tu max 32033 lbs

Uplift max= 22815 lbs/side (Per long side curb) Vu max 43188 lbs

**Shear (wind) 23188 lbs

*Shear (seis) 4488 lbs

Shear max= 23188 lbs (Total Curb)

Concrete Attach.: (Use 5/8"φ Simpson Strong Bolt 2) phi-Tn 2900 lbs

phi-Vn 1200 lbs

(LRFD design)

Anchors Required for Uplift (long side only)= 11.0

Anchors Required for Shear (Total Curb)= 36.0

Anchors Required (long side only) = 12.0

anchors (long side) 12.0 OK

Simpson Strong Bolt 2 anchors (short side) 8.0

3 5/8" Embed anchors (total) 40 OK

(f'c=4000psi, 6" min total thickness - normal weight concrete) Tu 2669 OK

ESR Report - 3037 Vu 1080 OK

Special Inspection Required

*Uplift and Shear seismic anchorage forces have been designed for an Rp of 1.5 max per ASCE 13.4.2

Anchorage design per ASCE 14.2.2.17/ACI D3.3 with strength reduction factors

not required in combination with Rp=1.5

** For wind force, shear at base for anchorage design, accounts for add'l area from curb width and height

page 5

Conc Anchors

Lyons Warren

Engineers Architects

9580 Candida Street

San Diego, CA 92126 (858) 573-8999

HVAC UNIT: Sunline 15-25 lightest

PROVENT STEEL CURB DESIGN

PROVENT PART NUMBER:80-268-1818 18in curb

Curb Information

Curb Number:

Hcurb 18 (Height from support structure to top of curb)

Lcurb 122.25 (Length of Curb - In to In)

Wcurb 80 (Width of Curb - In to In)

Lclip 89.125 (min Length in Long dir from end to clip)

# clips Long Side 2 (Shear + Uplift Clips)

# clips short side 2 (Shear Clips)

Unit Information:

Weight: 2006 lbs (Weight of Unit - min weight governs design)

W c-max 534 lbs (Maximum corner weight)

W c-min 470 lbs (Minimum corner weight)

W mid 323 lbs (load B or E, 6 point load criteria for York curbs)

H unit 53 in (Height of unit above curb)

H cm 26 in (Height from top of curb to center of mass of unit)

L unit 181 in (Length of unit)

w unit 92 in (Width of unit)

Seismic Loading (2014 FBC)

Ss 0.2 (worst case for Florida State)

Fa 2.5 (worst case for site; Ss<0.25, Site Class E)

Sms 0.5 (=Fa*Ss)

Sds 0.33 (=2/3*Sms)

Ip 1.5 (=Worst case)

ap 2.5

Rp 6

Fp max 0.3 Wp (=0.4*ap*Sds*Wp*(1+2*z/h)/(Rp/Ip))

Fp ASD 362 lbs (=0.7*Fpmax)

Wind Loading (2014 FBC)

Wind Exposure: D

V 185 mph (Ultimate Wind Speed - Worst case:

Kzt 1.66

Kd 0.9

Kh 1.31 (Worst Case for 60 foot roof height)

GCf 3.1

qh 171 psf (ASD=0.6W)

F 532 psf (ultimate) F 319 psf (service)

A net/transv. 66 sf

Fwind transv 35065 lbs (ultimate) Fwind trnsv 21039 lbs (service)

A net/long 34 sf

Fwind long 17872 lbs (ultimate) Fwind long 10723 psf (service)

Controlling Lateral Load (Seismic vs. Wind)

Transverse 21039 lbs (ASD)

Long 10723 lbs (ASD)

page 1

Lyons Warren

Engineers Architects

9580 Candida Street

San Diego, CA 92126 (858) 573-8999

HVAC UNIT: Sunline 15-25 lightest

PROVENT STEEL CURB DESIGN

PROVENT PART NUMBER:80-268-1818 18in curb

Wind Loading: Uplift (2014 FBC) 29.5-2 (GC=3.1 - FBC2014)

qh 171.5 psf

GCr 1.5

Fv (psf) 257.2 psf (ultimate)

Av 115 sf

Fv 29662 lbs (ultimate) Fv 17797 lbs (ASD: 0.6W)

Curb Loading:

Transverse direction:

OTM: 46132 lb-ft 0.6W: F max - transv * Hcm

M res. 3960 lb-ft 0.6D: 2 * Wcrnmin *0.6* (width curb +4.25")

Net OTM: 42173 lb-ft 0.6D+0.6W: OTM-RM

Max Comp 6699 lbs /side 1.0D+0.6W: (2 x Wcrnmax + (Mot-Mres)/ (width curb +4.25"))

Max Tension 14905 lbs /side 0.6D+0.6W: (Mot-Mres)/(width curb +4.25")) + Fv/(2 sides)

Max Tension 7453 lbs /clip 0.6D+0.6W: Max tension/side /#clips

Max Corner: 1418 lbs W c-max+ (Mot-Mres)/((w/curb+4.25")/Lcurb*(N-corner)/2/12

Max Interior: 2092 lbs W mid+ (Mot-Mres)/(width curb +4.25")/Lcurb*(N-mid)

Longitudinal direction:

OTM: 23513 lb-ft 0.6W: F max long * Hcm

RM 5957 lb-ft 0.6D: 2 X Wcrnmin x (Lcurb+4.25in)/12 x 0.6

Net OTM: 17556 lb-ft 0.6D+0.6W: OTM-RM

Max Comp = 2897 lbs /side 1.0D+0.6W: (2*Wcmax + (NetOTM)/Lclip)+ Fv/(U.C)

Max Tens = 11262 lbs /side 0.6D+0.6W: (Mot-Mres)/Lclip) + Fv/(2 sides)

Max Tension = 6813 lbs /clip 0.6D+0.6W: (Mot-Mres)/Lclip) + Fv/(2 sides)/#clips/side

Max Corner: 922 lbs W c-max+ (Mot-Mres)/Lcurb/Wcurb*(N-corner)/2

Connection of Unit to Curb

Screws in Uplift clips (Attach with 1/4 SMS into 14mil) Vall= 933 lbs/screw

Screws in Short Side Clips (Attach with #12 SMS into 14mil) Vall= 870 lbs/screw

UPLIFT CLIPS: UPLIFT CLIPS:

Shear: 2681 lbs/clip 6 1/4" screws/clip

Uplift: 7453 lbs/clip Fdiag/screw 765 lbs/screw

F diag 4590 lbs/clip to curb F/screw outs. 621 lbs/screw

SCREWS OK

SHORTSIDE CLIPS SHORTSIDE CLIPS

Shear: 2681 lbs/clip 4 #12 screws/clip

F screw 670 lbs/screw

SCREWS OK

page 2

Lyons Warren

Engineers Architects

9580 Candida Street

San Diego, CA 92126 (858) 573-8999

HVAC UNIT: Sunline 15-25 lightest

PROVENT STEEL CURB DESIGN

PROVENT PART NUMBER:80-268-1818 18in curb

Curb info

H curb 18 in, curb height

Fy 50 ksi

E 29000 ksi

Fu 65 ksi

gage: 14

R 0.1069

t 0.0713

R/t 1.50

h 17.71 in

Interior Curb

N 36 bearing length: 2*h

C 20

CR 0.1

CN 0.08

Ch 0.03

φw 0.85

Ωw 1.75

Pn 6.58 k

Pall 3.76 k

φPn 5.59 k

Pmax 2.09 k Pall>Pmax,curb OK,

Exterior Curb:

N total 36 2*curb height

N -BUS 1 bearing length with stiffener (built up section)

N - SWC 35 bearing length without stiffener (single web channel)

N 35 N 1

C 7.5 C 15.5

CR 0.08 CR 0.09CN 0.12 CN 0.08

Ch 0.05 Ch 0.04

φw 0.85 φw 0.75

Ωw 1.75 Ωw 2

Pn 1.33 k Pn 3.37 k

Pall 0.76 k Pall 1.68 k Pall 2.45 k

φPn 1.13 k φPn 2.53 k φPn 3.66 k

Pmax 1.42 k

Pall>Pmax,curb OK,

Exterior Curb SWC Exterior Curb BUS

Corner:

Lyons Warren

Engineers Architects

9580 Candida Street

San Diego, CA 92126 (858) 573-8999

HVAC UNIT: Sunline 15-25 lightest

PROVENT STEEL CURB DESIGN

PROVENT PART NUMBER:80-268-1818 18in curb

Connection of Curb to Supporting Structure (ASD)

Transverse: 0.6D+0.6W

**Uplift (wind)= 19164 lbs

*Uplift (seismic) -374 lbs

Uplift max= 19164 lbs/long side

**Shear (wind) 25913 lbs

*Shear (seis) 362 lbs

Shear max= 25913 lbs/total curb

Longitudinal:

**Uplift (wind)= 13609 lbs

*Uplift (seismic) -622 lbs T max 19164 lbs/long

Uplift max= 13609 lbs/long side V max 25913 lbs/total

**Shear (wind) 13913 lbs

*Shear (seis) 362 lbs

Shear max= 13913 lbs/total curb

Wood Attachment: (Use 5/8" φ x 5" LAG SCREWS) W' 2284.8 lbs

(4" minimum embed into DF or SP wood) Z' 592 lbs

total screws required= 48

# screws: LONG SIDE 12

# screws: SHORT SIDE 12

W/screw (uplift) 1597 lbs

V/Screw 540 lbs

Angle 71.3 deg

Z (at angle) 1686 lbs

Atkinson Formula: Z' (at angle) 1767 lbs

WOOD SCREWS OK

Steel Deck Attach.: (Use 5/8" φ A307 Bolts attached to L5x5x1/4 below deck at each conn.point)

Tall= 6900 lbs

Vall= 3680 lbs

total bolts required= 16

# bolts: LONG SIDE 6

# bolts: SHORT SIDE 2

T/bolt (uplift) 6804 lbs

V/bolt 1620 lbs

fv 5.2 ksi OK

ft 21.9 ksi OK

Fnt' 38.9 ksi

Fnv 24.0 ksi

BOLTS OK

page 4

Lyons Warren

Engineers Architects

9580 Candida Street

San Diego, CA 92126 (858) 573-8999

HVAC UNIT: Sunline 15-25 lightest

PROVENT STEEL CURB DESIGN

PROVENT PART NUMBER:80-268-1818 18in curb

Connection of Curb to Concrete Supporting Structure - STRENGTH DESIGN

Transverse: 0.9D +1.0(E or W)

**Uplift (wind)= 32033 lbs

*Uplift (seismic) 563 lbs *Rp*1.3/1.5/0.7asd

Uplift max= 32033 lbs/side (Per long side curb)

**Shear (wind) 43188 lbs (Maximum Lateral Force) (seismic: Rp=1.5 max)

*Shear (seis) 2688 lbs *Rp*1.3/1.5/0.7asd

Shear max= 43188 lbs (Total Curb)

Longitudinal:

**Uplift (wind)= 22815 lbs

*Uplift (seismic) 133 lbs Tu max 32033 lbs

Uplift max= 22815 lbs/side (Per long side curb) Vu max 43188 lbs

**Shear (wind) 23188 lbs

*Shear (seis) 2688 lbs

Shear max= 23188 lbs (Total Curb)

Concrete Attach.: (Use 5/8"φ Simpson Strong Bolt 2) phi-Tn 2900 lbs

phi-Vn 1200 lbs

(LRFD design)

Anchors Required for Uplift (long side only)= 11.0

Anchors Required for Shear (Total Curb)= 36.0

Anchors Required (long side only) = 12.0

anchors (long side) 12.0 OK

Simpson Strong Bolt 2 anchors (short side) 8.0

3 5/8" Embed anchors (total) 40 OK

(f'c=4000psi, 6" min total thickness - normal weight concrete) Tu 2669 OK

ESR Report - 3037 Vu 1080 OK

Special Inspection Required

*Uplift and Shear seismic anchorage forces have been designed for an Rp of 1.5 max per ASCE 13.4.2

Anchorage design per ASCE 14.2.2.17/ACI D3.3 with strength reduction factors

not required in combination with Rp=1.5

** For wind force, shear at base for anchorage design, accounts for add'l area from curb width and height

page 5

Conc Anchors

Lyons Warren

Engineers Architects

9580 Candida Street

San Diego, CA 92126 (858) 573-8999