effective wind velocity formula sheet - … · effective wind velocity formula sheet ... ground...

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R O O F M O U N T S

252© 2011 ROHN PRODUCTS LLC

RM

E F F E C T I V E W I N D V E L O C I T Y F O R M U L A S H E E T

V = (C1) (C2) (V)e

V = E�ective Wind Velocity at centerline of antenna for calculating required ballast. eC1 = Importance factor coe�cient from Table 1.C2 = Combined exposure and gust e�ect factor coe�cient from Table 2.V = Design ground wind speed for location, per ANSI/TIA-222-G.

Table 1: Values of C1

I Low hazard to human life and/or damage to property, optional services provided. 1.29 0.93II Signi�cant hazard to human life and/or damage to property, services available by other means. 1.38 1.00III Substantial hazard to human life and/or damage to property, essential services provided. 1.48 1.07

Class Description for installing considering height, use or location 60 ft. > 60 ft. Roof Height

Urban and suburban areas, wooded areas, or other terrain with numerous closely spaced obstructions having the size of single-family dwellings or larger. Open terrain with scattered obstructions having heights generally less than 30’ [9.1m], including �at, open country and grasslands. Flat, unobstructed shorelines exposed to wind �owing over open water, smooth mud �ats, salt �ats, and other similar terrain.

Exposure Description of Surrounding Terrain

B

C

D

Example: 30’ antenna elevation, 90 mph design ground wind speed, Class I, Exposure B V = (1.29) (0.82) (90) = 95 mph The minimum E�ective Wind Velocity for determining ballast requirements for this example would be 95 mph.

e

0-15 0.82 0.90 0.9920 0.82 0.92 1.0125 0.82 0.95 1.0430 0.82 0.96 1.0540 0.85 0.99 1.0850 0.88 1.02 1.1060 0.90 1.04 1.1270 0.92 1.05 1.1380 0.94 1.07 1.1490 0.95 1.09 1.16100 0.97 1.10 1.17120 0.99 1.12 1.19140 1.02 1.14 1.20160 1.04 1.15 1.21180 1.05 1.17 1.23200 1.07 1.18 1.24250 1.10 1.21 1.26300 1.13 1.23 1.28350 1.16 1.25 1.30400 1.18 1.27 1.31450 1.20 1.29 1.33500 1.22 1.30 1.34

Antenna Centerline

Elevation AboveGround Level (ft.)

Urban orWooded

Areas

Open Country& Grasslands

Open Water or Smooth Terrain

B C DExposure

Table 2: Values of C2

This data sheet is provided to assist consumers in determining the minimum E�ective Wind Velocity to be used for determiningballast requirements from a ROHN Non-Penetrating Roof MountBallast Chart. Higher velocities may be required for sites located on hills, escarpments or ridges (refer to ANSI/TIA-222-G). Potential increases in wind velocity due to channeling, roof projections and other obstructions must also be considered. The information shown should not be relied upon without competent professional examination and veri�cation of its accuracy and suitability for a speci�c site or application.

ROHN recommends a minimum 75 mph E�ective Wind Velocity be used for determining ballast requirements.Refer to page 270 for ballast requirements and general notes.

<_

253Phone (309) 566-3000 • Fax (309) 566-3079 • www.rohnnet.com • The Industry Standard© 2011 ROHN PRODUCTS LLC

ROOF MOUNTS - FRM RM

F R MN O N - P E N E T R A T I N G

Mount Part No.

FRM125

FRM150

FRM166

FRM238

FRM225

FRM238SP5

MastPart No.

FY202

FY203

FY204

FY205

FY205SP

FY253

Mast Description & Height

1.25” O.D. x 16 GA. x 5.0’ (PG)

1.50” O.D. x 16 GA. x 2.5’ (PG)

1.66” O.D. x 16 GA. x 2.5’ (PG)

2.38” O.D. x 0.154“ wall x 2.5’ (HDG)

2.25” O.D. x 14 GA. x 5.0’ (HDG)

2.38” O.D. x 0.154“ wall x 5.0’ (HDG)

MAST SPECIFICATIONS

F R M B A L L A S T R E Q U I R E M E N T SEffectiveProjectedArea (EPA)

(FT )2

Ballast(LBS)

ZeroVelocity

Load(PSF)

Vs(MPH)

Vmax at centroid of projected area, (MPH)

h=2 FT h=3 FT h=4 FT h=5 FT

100200300400

100200300400

100200300400

12243648

12243648

12243648

140198242280

99140171198

81114140161

135188222269

96133157190

78108128155

110153182

219 (197)

78108129

155 (139)

6488

105127 (114)

96133

157 (154)190 (154)

6894

111134(109)

5577

91 (89)110 (89)

85119

141 (131)170 (131)

6084

99 (93)120 (93)

4968

81 (76)98 (76)

2

4

6

h = Distance from support surface to centroid of EPA.Vs = Effective wind velocity resulting in sliding on a flat surface with a .50 coefficient of friction.Vmax = Effective wind velocity based on strength or overturning.

NOTE: The velocities in ( ) apply to the FRM125 mount when the strength of the FRM125 mast governs.

3’ Square

The FRM mount is a lightweight mount and is galvanized for corrosion protection. The FRM mount is easily shipped via UPS.

Order (1) optional FRMMAT (1/8” thick) or (1) optional FRMPAD (3/8” thick) for a protective barrier between the mount and the roof. Order (1) optional SCK150safety cable kit (3/16” x 150’).

1.25” to 2.38” MastTube Diameters

2.5’ and 5’ OverallMast Heights(See Mast Descriptions)

PG = Pre-galvanized mastHDG = Hot-dip galvanized mast

16” Nominal Blocks


R O O F M O U N T S - J R M


RM

J R MN O N - P E N E T R A T I N G

5’ Square

The JRM ships broken down on one skid and weighs approximately 50 lbs. when assembled. The JRM is galvanized for corrosionprotection. The JRM is used in cellular, PCS, broadband and other applications.

Order (1) optional JRMMAT (1/8” thick) or (1) optional JRMPAD (3/8” thick) for a protective barrier between the mount and the roof. Order (1) optional SCK150 safety cable kit (3/16” x 150’).

Refer to pages 255-256 for ballast requirements.

MountPart No.

JRM23805

JRM23855

JRM23810

JRM27505

JRM27555

JRM27510

JRM35010


2.38” O.D. x 0.154“ wall x 5.0’ (HDG) (1 piece)

2.38” O.D. x 0.154“ wall x 10.0‘ (HDG) (2 pieces)

2.38” O.D. x 0.154“ wall x 10.0’ (HDG) (1 piece)

2.88” O.D. x 0.203“ wall x 5.0‘ (HDG) (1 piece)

2.88” O.D. x 0.203“ wall x 10.0’ (HDG) (2 pieces)

2.88” O.D. x 0.203“ wall x 10.0‘ (HDG) (1 piece)

3.50” O.D. x 0.216” wall x 10.0’ (HDG) (1 piece)

MAST SPECIFICATIONSMast

Part No.

FZ1755

FZ1753 / FZ1754

FZ1756

FZ1757

FZ1758 / FZ1759

FZ1760

FZ1761

HDG = Hot-dip galvanized mast

2.38” to 3.50” Mast Tube Diameters,1 and 2 piece options

5’ or 10’ (1 & 2 piece) Overall Mast Heights(See Mast Descriptions)



ROOF MOUNTS - JRM RMJ R M

B A L L A S T R E Q U I R E M E N T SEffectiveProjectedArea (EPA)

(FT )2

Ballast(LBS)

ZeroVelocity

Load(PSF)

Vs(MPH)


h=2 FT h=3 FT h=4 FT h=5 FT h=6 FT h=7 FT h=8 FT h=9 FT

250350450550650750850950

105011501250

250350450550650750850950

105011501250

250350450550650750850950

105011501250

250350450550650750850950

105011501250

250350450550650750850950

105011501250

250350450550650750850950

105011501250

10.014.018.022.026.030.034.038.042.046.050.0

10.014.018.022.026.030.034.038.042.046.050.0

10.014.018.022.026.030.034.038.042.046.050.0

10.014.018.022.026.030.034.038.042.046.050.0

10.014.018.022.026.030.034.038.042.046.050.0

10.014.018.022.026.030.034.038.042.046.050.0

110131148164178191204215226237247

99117133147159171182193203212221

90107121134145156166176185193202

8499

112124135145154163171179187

7892

105116126135144152160168175

708394

104113121129136143150156

129153173191208224238252265277289

115137155171186200213225237248258

105125141156170183194205216226236

98115131145157169180190200209218

91108122135147158168178187196204

8297

110121132141151159167175183

105125141156170183194205216226236

94112126140152163174184193202211

86102115128139149159168176185192

8094

107118128138147155163171178

7588

100111120129137145153160167

67798999

107115123130137143149

91108122135147158168178187196204

8297

110121132141151159167175183

7588

100111120129137145153160167

698293

102111120127135141148154

65768796

104112119126132138144

5868778693

100106113118124129

8297

110121132141151159167175183

738698

108118126135142150157163

67798999

107115123130137143149

62738392

100107114120126132138

5868778693

100106113118124129

52616977838995

101106111115

7588

100111120129137145153160167

67798999

107115123130137143149

6172829098

105112119125131136

566776849198

104110115121126

53627178859197

103108113118

475663707682879297

101105

698293

102111120127135141148154

62738392

100107114120126132138

566776849198

104110115121126

52627077849096

102107112117

4958657279859095

100105109

4452596570768085899498

65768796

104112119126132138144

5868778693

100106113118124129

53627178859197

103108113118

4958657279859095

100105109

46546168747984899498

102

4148556166717580848891

6172829098

105112119125131136

546473818894

100106112117122

5059677480869297

102107111

46546268748085909499

103

4351586469757984889296

3846525762677175798386

4

5

6

7

8

10

Vmax = Effective wind velocity based on strength or overturning.

h = Distance from support surface to centroid of EPA.

Vs = Effective wind velocity resulting in sliding on a flat surface with a .50 coefficient of friction.

NOTE: Mast strength may govern antenna capacity.


R O O F M O U N T S - J R M


RMJ R M


(FT )2

Ballast(LBS)

ZeroVelocity

Load(PSF)

Vs(MPH)



250350450550650750850950

105011501250

250350450550650750850950

105011501250

250350450550650750850950

105011501250

250350450550650750850950

105011501250

250350450550650750850950

105011501250

250350450550650750850950

105011501250

10.014.018.022.026.030.034.038.042.046.050.0

10.014.018.022.026.030.034.038.042.046.050.0

10.014.018.022.026.030.034.038.042.046.050.0

10.014.018.022.026.030.034.038.042.046.050.0

10.014.018.022.026.030.034.038.042.046.050.0

10.014.018.022.026.030.034.038.042.046.050.0

64758695

103110118124131137143

5970798895

102109115121127132

556574828996

102108113118124

52627077849096

102107112116

4958667380869196

101106110

475663707682879297

101105

7588

100111120129137145153160167

698293

102111120127135141148154

65768796

104112119126132138144

6172829098

105112119125131136

5868778693

100106113118124129

556574828995

102107113118123

6172829098

105112119125131136

566776849198

104110115121126

53627178859197

103108113118

5059677480869297

102107111

475663707682879297

101105

45536067727883889296

101

53627178859197

103108113118

4958657279859095

100105109

46546168747984899498

102

4351586469757984889296

4148556166717580848891

3946525863677276808387

475663707682879297

101105

4452596570768085899498

4148556166717580848891

3846525762677175798386

3743495459636771757882

3541475256606468717578

4351586469757984889296

4047535964697378828589

3744505560656973768083

3542475257616568727579

3339454954586165687175

3238434751555962656871

4047535964697378828589

3744495559646872767982

3541465156606467717477

3338444852566063677073

3137414650535760636669

2935394447515457606366

3744505560656973768083

3541465156606467717477

3238434852566063666972

3036414549535659626568

2934394347505356596265

2833374144485154565962

3542475257616568727579

3338444852566063677073

3036414549535659626568

2934384346505356596264

2732374044475053565861

2631353842454851535658

12

14

16

18

20

22





257Phone (309) 566-3000 • Fax (309)566-3079 • www.rohnnet.com • The Industry Standard© 2011 ROHN PRODUCTS LLC

ROOF MOUNTS - BRM4 RM

B R M 4N O N - P E N E T R A T I N G

Mount Part No.

BRM425

BRM430

BRM435

BRM440

BRM445

BRM455

BRM42510

BRM43510

BRM44510

Mast Part No.

KY1590

KY1592

KY1594

KY1596

KY1598

KY1600

KY2061

KY2063

KY2065


2.38” O.D. x 0.154“ wall x 3.0’

2.88” O.D. x 0.203“ wall x 3.0‘

3.50” O.D. x 0.216“ wall x 3.0’

4.00” O.D. x 0.226“ wall x 3.0‘

4.50” O.D. x 0.237” wall x 3.0’

5.56“ O.D. x 0.258” wall x 3.0‘

2.38“ O.D. x 0.154” wall x 10.0’

3.50“ O.D. x 0.216” wall x 10.0‘

4.50” O.D. x 0.237” wall x 10.0’

MAST SPECIFICATIONS

6.5’Square

The BRM4 mount is hot-dip galvanized after fabrication for corrosion protection.

Order (1) optional BRM4MAT (1/8” thick) or (1) optional BRM4PAD (3/8” thick) for a protective barrier between the mount and the roof. Order (1) optional SCK150safety cable kit (3/16” x 150’).

Refer to pages 258-259 for ballast requirements. 2.38” to 5.56” Mast Tube Diameters

3’ and 10’ Overall Mast Heights(See Mast Descriptions)



R O O F M O U N T S - B R M 4


RMB R M 4


(FT )2

Ballast(LBS)

ZeroVelocity

Load(PSF)

Vs(MPH)



300500700900

1100130015001700190021002300

300500700900

1100130015001700190021002300

300500700900

1100130015001700190021002300

300500700900

1100130015001700190021002300

300500700900

1100130015001700190021002300

300500700900

1100130015001700190021002300

7.111.816.621.326.030.835.540.245.049.754.4

7.111.816.621.326.030.835.540.245.049.754.4

7.111.816.621.326.030.835.540.245.049.754.4

7.111.816.621.326.030.835.540.245.049.754.4

7.111.816.621.326.030.835.540.245.049.754.4

7.111.816.621.326.030.835.540.245.049.754.4

171221261296328356383407431453474

121156185210232252271288305320335

99128151171189206221235249261274

86110131148164178191204215226237

7799

117133147159171182193203212

7090

107121134145156166176185193

242313370416448478506533558583604

171221262294317328358377395412427

140181214240259276292308322336349

121157185208224239253267279291302

108140166186201214226238250261270

99128151170183195207218228238247

198256302340366391414435456476493

140181214240259276292308322336349

114148175196211225239251263275285

99128151170183195207218228238247

89114135152164175185195204213220

81104123139149159169178186194201

171221262294317338358377395412427

121157185208224239253267279291302

99128151170183195207218228238247

86111131147159169179188197206213

7799

117132142151160169177184191

7090

107120129138146154161168174

153198234263284302320337353369382

108140166186201214226238250261270

89114135152164175185195204213220

7799

117132142151160169177184191

6989

105118127135143151158165171

638196

107116123131138144150156

140181214240259276292308322336349

99128151170183195207218228238247

81104123139149159169178186194201

7090

107120129138146154161168174

638196

107116123131138144150156

57748798

106113119126132137142

130167198223240256271285299312323

92118140157169181191201211220228

7597

114128138148156165172180186

658499

111120128135142149156161

587589

100107114121127134139144

5368819198

104111116122127132

121157185208224239253267279291302

86111131147159169179188197206213

7090

107120129138146154161168174

617893

104112120127133140146151

54708393

100107113119125130135

496476859298

103109114119123

114148175196211225239251263275285

81104123139149159169178186194201

6685

101113122130138145152159164

57748798

106113119126132137142

5166788895

101107112118123127

47607180869297

103107112116

2

4

6

8

10

12






ROOF MOUNTS - BRM4 RMB R M 4


(FT )2

Ballast(LBS)

ZeroVelocity

Load(PSF)

Vs(MPH)



300500700900

1100130015001700190021002300

300500700900

1100130015001700190021002300

300500700900

1100130015001700190021002300

300500700900

1100130015001700190021002300

300500700900

1100130015001700190021002300

300500700900

1100130015001700190021002300

7.111.816.621.326.030.835.540.245.049.754.4

7.111.816.621.326.030.835.540.245.049.754.4

7.111.816.621.326.030.835.540.245.049.754.4

7.111.816.621.326.030.835.540.245.049.754.4

7.111.816.621.326.030.835.540.245.049.754.4

7.111.816.621.326.030.835.540.245.049.754.4

658499

112124135145154163171179

617892

105116126135144152160168

57748799

109119128136144151158

54708394

104113121129136143150

5267798999

107115123130137143

4964758695

103110118124131137

92118140157169181191201211220228

86111131147159169179188197206213

81104123139149159169178186194201

7799

117132142151160169177184191

7394

112126135144153161168176182

7090

107120129138146154161168174

7597

114128138148156165172180186

7090

107120129138146154161168174

6685

101113122130138145152159164

638196

107116123131138144150156

607791

102110118125131137143149

57748798

106113119126132137142

658499

111120128135142149156161

617893

104112120127133140146151

57748798

106113119126132137142

54708393

100107113119125130135

5267798996

102108114119124129

496476859298

103109114119123

587589

100107114121127134139144

54708393

100107113119125130135

5166788895

101107112118123127

486374839096

101107112117121

46607179869197

102106111115

4457687682879297

102106110

5368819198

104111116122127132

496476859298

103109114119123

47607180869297

103107112116

4457687682879297

102106110

425464727883889397

101105

40526269758084899397

101

496375849197

102108113118122

46597079859096

101106110114

4356667480859095

100104108

41536370768186909499

102

3950606772778286909497

3748576469747882869093

46597079859096

101106110114

435565747985909499

103107

40526269758084899397

101

3849596671768084889295

3747566368727680848891

3545536065697377818487

4356667480859095

100104108

40526269758084899397

101

3849586570758084889295

3647556267717579838790

3444535964687276798386

3343505761656973767982

14

16

18

20

22

24








RM

10’Square

B R M 6N O N - P E N E T R A T I N G

Mount Part No.

BRM630M

BRM635M

BRM640M

BRM645M

BRM655M

BRM665M

BRM64510M


2.88” O.D. x 0.203“ wall x 4.0’

3.50” O.D. x 0.216“ wall x 4.0’

4.00” O.D. x 0.226“ wall x 4.0’

4.50” O.D. x 0.237“ wall x 4.0’

5.56” O.D. x 0.258” wall x 4.0’

6.63“ O.D. x 0.280” wall x 4.0’

4.50” O.D. x 0.237” wall x 10.0’

MAST SPECIFICATIONSMast Part No.

KY2110

KY1570

KY1578

KY1579

KY1580

KY1581

KY2043

The BRM6 mount is hot-dip galvanized after fabrication for corrosion protection.

Order (1) optional BRM6MAT (1/8” thick) or (1) optional BRM6PAD (3/8” thick)for a protective barrier between the mount and the roof. Order (1) optional SCK150 safety cable kit (3/16” x 150’).

Optional additional inner ballast support angle kit available, order P/N BRM6ABK.

Refer to pages 261-263 for ballast requirements.

2.88” to 6.63” Mast Tube Diameters

4’ and 10’ Overall Mast Heights(See Mast Descriptions)




B R M 64 F T . D I S H E L E V A T I O N

B A L L A S T R E Q U I R E M E N T S

DishDiameter

Ballast(LBS)

ZeroVelocity

Load(PSF)

Design Wind Velocities(MPH)

EL=0º EL=20º EL=40º

500750

10001250150017502000

500750

100012501500175020002250250027503000

750100012501500175020002250250027503000

4’(1.2 m)

6’(1.8 m)

8’(2.4 m)

Vmax Vs Vmax Vs Vmax Vs5.07.5

10.012.515.017.520.0

5.07.5

10.012.515.017.520.022.525.027.530.0

7.510.012.515.017.520.022.525.027.530.0

87107125139148157165

5871839399

105110115120125127

53626974788286909495

678295

106117126135

4555637178849095

100105110

41475358636771757982

103131154169180190196

658399

112120127130130130130130

57697985919798989898

7592

107119131141151

506171798794

101107113118123

46535965707580848892

112142167189203211211

6989

106120129137141141141141141

6073849096

102103103103103

92113131146160173185

61758797

107115123131138141141

56657380869298

103103103


EL = Dish antenna azimuth angle with horizontal.






RMB R M 6


(FT )2

Ballast(LBS)

ZeroVelocity

Load(PSF)

Vs(MPH)


h=4 FT h=5 FT h=6 FT h=7 FT h=8 FT h=9 FT h=10 FT

500750

100012501500175020002250250027503000

500750

100012501500175020002250250027503000

500750

100012501500175020002250250027503000

500750

100012501500175020002250250027503000

500750

100012501500175020002250250027503000

500750

100012501500175020002250250027503000

5.07.5

10.012.515.017.520.022.525.027.530.0

5.07.5

10.012.515.017.520.022.525.027.530.0

5.07.5

10.012.515.017.520.022.525.027.530.0

5.07.5

10.012.515.017.520.022.525.027.530.0

5.07.5

10.012.515.017.520.022.525.027.530.0

5.07.5

10.012.515.017.520.022.525.027.530.0

99121140156171185198210221232242

8199

114128140151161171180189198

708699

110121131140148156164171

63778899

108117125133140147153

5770819099

107114121128134140

536575849199

106112118124129

128156180202218230242254265275280

104128147165178188198207216225228

90110128143154163171179187195198

8199

114128138146153160167174177

7490

104116126133140147153159161

688496

108116123130136141147149

114140161180195206217227237246250

93114132147159168177185193201204

8199

114128138146153160167174177

7288

102114123130137144150156158

668193

104113119125131137142144

61758696

104110116121127132134

104128147165178188198207216225228

85104120134145154162169176183186

7490

104116126133140147153159161

668193

104113119125131137142144

60748595

103109114120125130132

5668798895

101106111115120122

96118136152165174183192200208211

7996

111125134142150157163170173

688496

108116123130136141147149

61758696

104110116121127132134

5668798895

101106111115120122

52637382889398

103107111113

90110128143154163171179187195198

7490

104116126133140147153159161

647890

101109115121127132138140

5770819097

103108113118123125

52647482899499

104108112114

4859687682879296

100104106

85104120134145154162169176183186

698598

110119125132138144150152

60748595

103109114120125130132

546676859297

102107112116118

4960697884899398

102106108

45566472788286909498

100

8199

114128138146153160167174177

668193

104113119125131137142144

5770819097

103108113118123125

51637281879297

101106110112

475766748084899397

100102

4353616874788286899394

10

15

20

25

30

35


EL = Dish antenna angle with horizontal.





B R M 6B A L L A S T R E Q U I R E M E N T S

EffectiveProjectedArea (EPA)

(FT )2

Ballast(LBS)

ZeroVelocity

Load(PSF)

Vs(MPH)


h=4 FT h=5 FT h=6 FT h=7 FT h=8 FT h=9 FT h=10 FT

500750

100012501500175020002250250027503000

500750

100012501500175020002250250027503000

500750

100012501500175020002250250027503000

5.07.5

10.012.515.017.520.022.525.027.530.0

5.07.5

10.012.515.017.520.022.525.027.530.0

5.07.5

10.012.515.017.520.022.525.027.530.0

49617078869299

105110116121

4757667481879399

104109114

445463707783889499

104108

647890

101109115121127132138140

60748595

103109114120125130132

5770819097

103108113118123125

5770819097

103108113118123125

546676859297

102107112116118

51637281879297

101106110112

52647482899499

104108112114

4960697884899398

102106108

475766748084899397

100102

4859687682879296

100104106

45566472788286909498

100

4353616874788286899394

4555647177818690949799

4352606773778185889293

4049576469737780848788

4352606773778185889293

4049576368727680838688

3847546065697276798283

4049576469737780848788

3847546065697276798283

3644515762656972757879

40

45

50


EL = Dish antenna angle with horizontal.




R O O F M O U N T S - N P P K


RM

N P P KN O N - P E N E T R A T I N G

3.4’

Mount Adjusts to Roof Angle

The NPPK mount is a great solution for broadband antennas and satellite TV dishes. The adjustable mounting plate can be center mounted or to one side as needed to accommodate other satellite TV dish mounts. Our 1LG mount (located on page 274) with a base and 1-1/4” mounting tube can be attached to the NPPK. The mount comes standard with double ballast trays on each side tohold concrete blocks. The NPPK mount is hot-dip galvanized after fabrication for corrosion protection.

Order (2) optional FRMMAT (1/8” thick) or (2) optional FRMPAD (3/8” thick) for a protective barrier between the mount and the roof. Order (1) optional SCK150 safety cable kit (3/16” x 150’).

3’

AdjustableMounting Plate

16” NominalBlocks


ROOF MOUNTS - 25GBRM RM

2 5 G B R MN O N - P E N E T R A T I N G

The 25GBRM mount is designed to support one or two 25G tower sections in a self-supporting application. The 25GBRM mount is galvanized after fabrication for corrosion protection.

Order (1) optional BRM6MAT (1/8” thick) or (1) optional BRM6PAD (3/8” thick) for a protective barrier between the mount and the roof. Order (1) optional SCK150 safety cable kit (3/16” x 150’).

Refer to page 266 for ballast requirements.

Standard 25G sections mountto top of 25GBRM

10’ Square

Overall Mast Heights(1) 25G Section - 12.4’(2) 25G Sections - 22.4’



R O O F M O U N T S - 2 5 G B R M


RM

2 5 G B R MB A L L A S T R E Q U I R E M E N T S


(FT )2

Ballast(LBS)

ZeroVelocity

Load(PSF)

VsOne

Section(MPH)

h=12.4 FT


VsTwo

Sections(MPH)

h=22.4 FT1 Sectionh=12.4 FT

2 Sectionsh=22.4 FT

500750

100012501500175020002250250027503000

500750

100012501500175020002250250027503000

500750

100012501500175020002250250027503000

500750

100012501500175020002250250027503000

500750

100012501500175020002250250027503000

500750

100012501500175020002250250027503000

5.07.5

10.012.515.017.520.022.525.027.530.0

5.07.5

10.012.515.017.520.022.525.027.530.0

5.07.5

10.012.515.017.520.022.525.027.530.0

5.07.5

10.012.515.017.520.022.525.027.530.0

5.07.5

10.012.515.017.520.022.525.027.530.0

5.07.5

10.012.515.017.520.022.525.027.530.0

131160185207227245250250250250250

113138159178195211225239250250250

100123142159174188201213224235246

91112129144158171183194204214224

84103119133146158169179189198207

7997

112125137148158167176185193

96117135151165179191203214224234

88107124139152164175186196206215

82100115129141152163173182191200

7694

108121132143153162171179187

7289

102114125135145153162169177

698497

109119128137146154161168

111136157176190201211221231240244

92112130145157166174182190198201

8098

113126136144152159166172175

7288

101113122129136142149154157

668093

104112118124130136141144

61748696

104110115121126131133

658092

103111118124130135140143

5770819198

104109114119124126

52637382889498

103107112113

485867758186909599

103104

4454637076808488929597

4251596671757983869091

2

4

6

8

10

12


(FT )2

Ballast(LBS)

ZeroVelocity

Load(PSF)

VsOne

Section(MPH)

h=12.4 FT


VsTwo

Sections(MPH)

h=22.4 FT1 Sectionh=12.4 FT

2 Sectionsh=22.4 FT

500750

100012501500175020002250250027503000

500750

100012501500175020002250250027503000

500750

100012501500175020002250250027503000

5.07.5

10.012.515.017.520.022.525.027.530.0

5.07.5

10.012.515.017.520.022.525.027.530.0

5.07.5

10.012.515.017.520.022.525.027.530.0

7491

105117129139149158166174182

7086

100111122132141149157165172

678295

106116126134142150157164

668093

104114123131139147154161

63778999

109118126133141147154

60748696

105113121128135142148

5770809097

103108113118123125

546676859297

102107111116118

51627281879297

101106110112

3948566267717578818586

3746535964677174778082

3644505661646871747778

14

16

18

h = Distance from support surface to centroid of EPA.Vs = Effective wind velocity resulting in sliding on a flat surface with a .50 coefficient of friction.Vmax = Effective wind velocity based on strength or overturning.


ROOF MOUNTS - AAGM RM

A A G MN O N - P E N E T R A T I N G

Mount Part No.

AAGM35

AAGM40

AAGM45

AAGM55

AAGM6560

Mast Part No.

FYS75

FYS76

FYS77

FYS78

FYS96


3.50” O.D. x 0.216” wall x 4.5’

4.00” O.D. x 0.226” wall x 4.5’

4.50” O.D. x 0.237 wall x 4.5’

5.56” O.D. x 0.258” wall x 4.5’

6.63” O.D. x 0.280” wall x 5.0’

MAST SPECIFICATIONS

16.3’

14.3’

The AAGM mount is capable of supporting dishes with diameters up to 10 feet. The AAGM mount is hot-dip galvanized after fabrication for corrosion protection.

Order (1) optional AGMMAT (1/8” thick) or (1) optional AGMPAD (3/8” thick) for a protective barrier between the mount and the roof. Order (1) optional SCK150 safety cable kit (3/16” x 150’).

Refer to page 268 for ballast requirements.

3.50” to 6.63” Mast Tube Diameters2.5’ and 5’ Overall Mast Heights(See Mast Descriptions)



R O O F M O U N T S - A A G M


RM

A A G M4 . 5 F T D I S H E L E V A T I O N

B A L L A S T R E Q U I R E M E N T S

DishDiameter

Ballast(LBS)

ZeroVelocity

Load(PSF)

Vmax(MPH)

Vs (MPH)


100015002000250030003500400050006000

100015002000250030003500400050006000

100015002000250030003500400050006000

100015002000250030003500400050006000

4’(1.2 m)

6’(1.8 m)

8’(2.4 m)

10’(3.0 m)

6.09.0

12.015.118.121.124.130.136.1

6.09.0

12.015.118.121.124.130.136.1

6.09.0

12.015.118.121.124.130.136.1

6.09.0

12.015.118.121.124.130.136.1

135164187207225240250250250

90109125138150160165165165

688294

104112120125125125

465664717782858585

91111128143157170181203222

60748596

105113121135148

45566472798591

101111

313844495458626976

93114132147161174186208228

62768898

108116124139152

47576674818793

104114

334046525761657380

101123142159174188201225246

678295

106116125134150164

506271798794

101112123

404957647075808585






ROOF MOUNTS - PRM6 RM

P R M 6N O N - P E N E T R A T I N G

Mount Part No.

PRM635

PRM640

PRM645

PRM655

Mast Description

3.50” O.D. x 0.216“ wall

4.00” O.D. x 0.226“ wall

4.50” O.D. x 0.237“ wall

5.50” O.D. x 0.258” wall

MAST SPECIFICATIONSMast Part No.

KY1672

KY1673

KY1674

KY1675

2.4’

10.4 ’

DishDiameter

Ballast(LBS)

ZeroVelocity

Load(PSF)

Design Wind Velocities(MPH)


16001800200022002400

160018002000220024002600280030003200340036003800

4’(1.2 m)

6’(1.8 m)

Vmax Vs Vmax Vs Vmax Vs17.219.421.523.725.8

17.219.421.523.725.828.030.132.334.436.638.740.9

145154162168171

97102108112114116118120122124125125

122130137144150

81869196

100104108112115119122125

180184187189189

117123125126126126126126126126126126

137146154161168

9197

102107112117121125126126126126

198198198198198

126132132132132132132132132132132132

168179188197198

112119125131132132132132132132132132

BALLAST REQUIREMENTS

The PRM6 mount is capable of supporting dishes with diameters up to 6 feet. The mount is hot-dip galvanized after fabrication forcorrosion protection. Th PRM6 mount is also UPS shippable.

Order (1) optional PRM6MAT (1/8” thick) or (1) optional PRM6PAD (3/8” thick) for a protective barrier between the mount and the roof. Order (1) optional SCK150 safety cable kit (3/16” x 150’).





Concrete blocks notprovided with mount.

Post Tensioning Rods (TYP)

3.50” to 5.50” Mast Tube Diameters 5.0’ Overall Mast Heights(See Mast Descriptions)


R O O F M O U N T S


RM

B A L L A S T R E Q U I R E M E N T S F O R R O O F M O U N T S 1. Ballast requirements are provided to assist consumers in determining the applicability of a non-penetrating roof mount for an antenna installation and to assist in determining the amount of ballast required. The ballast requirements should not be relied upon without competent local professional examination and verification of its accuracy and suitability for a specific site or application. 2. Specific antennas and/or other mounting configurations may require more stringent strength and ballast requirements and must be investigated for each installation. The load carrying requirements of the supporting surface, the mount and mast, the antenna and the antenna’s connection to the mast must be investigated for each installation. 3. When antenna areas are indicated vs. specific antenna types, the areas tabulated are effective projected areas that include appropriate wind drag factors applied to the projected areas of the supported antennas and the exposed portions of the mount and ballast. The center of the effective projected area is assumed to be at the top of the mounting pipe or the height indicated in the ballast table. Unless otherwise indicated, tabulated ballast requirements assume that the effective projected areas are concentric to the mount and that uplift or download wind forces are insignificant. 4. The tabulated wind velocities are considered to occur at the centroid of the effective projected areas. The wind velocity appropriate for an installation must be determined on an individual site basis considering the location and elevation of the mount. The wind velocity at ground level must be multiplied by appropriate height escalation and gust factors. Potential increases in wind velocity due to channeling, roof projections, and other obstructions, must also be considered when determining ballast requirements. 5. The ballast weights indicated are assumed to be uniformly distributed on the mount. The weight of the mount and antenna may be considered as ballast. Mounts are assumed to be mounted on a flat supporting surface. 6. The zero velocity loads shown are equal to the tabulated ballast weights divided by the total area enclosed by the perimeter of the mount. This area is greater than the ballast contact area. Loads which must be investigated include reactions caused by wind forces and moments, live loads, ice loads, earthquake loads and the dead loads of ballast, mount, antenna, mounting hardware, miscellaneous equipment and roof pads. 7. The tabulated maximum wind velocities (Vmax) are based on a minimum 1.5 factor of safety against structural failure and overturning. 8. The tabulated wind velocities resulting in sliding (Vs) are based on a factor of safety equal to 1.0 and an effective coefficient of friction equal to 0.50 between the mount and a flat supporting surface. A 1.0 factor of safety was used assuming that at higher wind velocities, safety cables or other suitable attachments to the support structure would prevent sliding beyond a safe, designated area. 9. The appropriate coefficient of friction and factor of safety to determine wind velocities resulting in sliding must be determined on an individual site basis. The coefficient of friction may vary under changing moisture and temperature conditions. The minimum coefficient of friction must be used to evaluate sliding resistance. Wind speeds resulting in sliding for other factors of safety or for other coefficients of friction may be found by multiplying the tabulated values of Vs by the following modification factor: Modification Factor = [µ /(.5 x FS)]1/2

µ= Coefficient of Friction FS = Factor of Safety10. The values of Vs indicated do not apply for installations which are prevented from sliding by cables or other suitable attachments to the supporting structure.

11. Roof pads are recommended to prevent damage to roof membranes. Pads should be placed under all contact areas.

12. ROHN recommends that ballast material always be placed prior to mounting the antenna and that roof pads and mount be secured to prevent hazards from occurring under extreme wind loading conditions. Precautions should also be taken to prevent the inadvertent removal of ballast material after installation and to insure that all ballast material is fully supported by the mount (required for ballast to be effective in resisting overturning and sliding).

13. When adhesives are used to secure roof pads, the adhesive must be compatible with the supporting surface. Precautions should be taken to insure that damage to the supporting surface will not occur upon wind loading.

14. The installation, roof material and supporting structure must be capable of withstanding all loads imposed by the antenna system. Supporting surfaces, anchors and/or safety cables must be sufficient to resist the reactions from the antenna system. The installation must meet all applicable local, state and federal requirements.


ROOF MOUNTS - URM RM

U R M

Features: 1. URM mount can be used on a flat roof, sloped roof or over a roof peak. 2. URM mount can be used with 2.88” to 4.50” O.D. masts (order separately). 3. Bottom of mount pivots to match roof pitch. 4. Rear leg adjusts for extra length. 5. Mount base angles are pre-drilled to accept 1/2” diameter connectors.

Optional Masts - Ordered Separately

P2530 2.88” O.D. x 0.203“ wall x 30” LongP330 3.50” O.D. x 0.216“ wall x 30” LongP3530 4.00” O.D. x 0.226“ wall x 30” LongP430 4.50” O.D. x 0.237“ wall x 30” Long

16”24” 28”

25”

ROHN’s Universal Roof Mount (URM) is capable of supporting most PCS, Cellular, and Microwave antennas. The URM adapts to various roof pitches and the fully adjustable rear-leg allows for use on a �at or up to a 12”/12” pitched roof. Installation is easy because of the quick adaptability, plus there’s no need for concrete blocks. The URM is hot-dip galvanized after fabrication for corrosion protection, and can easily ship UPS.

Braces provided with multiple holes to allow+ / - 26” of lengthadjustment.


R O O F M O U N T S - S H R M


RM

S H R M

26”28”

24”

16”

Features: 1. SHRM mount can be used on a flat roof or on a roof peak, up to 45 degrees maximum pitch. 2. SHRM mount can be used with 2.88” to 5.00” O.D. masts (ordered separately). 3. Bottom of mount pivots to match roof pitch. 4. Mount base angles are pre-drilled to accept 1/2” diameter connectors.

ROHN’s Saw Horse Roof Mount (SHRM) is capable of supporting most PCS, Cellular, and Microwave antennas. The SHRM allows for placement of antennas on �at roofs or roof peaks with up to a 12”/12” pitch. The SHRM is also able to be installed on �at roofs. Installation is easy because of the quick adaptability, plus there’s no need for concrete blocks. The SHRM is hot-dip galvanized after fabrication for corrosion protection, and can easily ship UPS.

Optional Masts - Ordered Separately

P2530 2.88” O.D. x 0.203“ wall x 30” LongP330 3.50” O.D. x 0.216“ wall x 30” LongP3530 4.00” O.D. x 0.226“ wall x 30” LongP430 4.50” O.D. x 0.237“ wall x 30” Long

28”


ROOF MOUNTS - TRT RM

T R T 3 6 / T R T 6 0 / T R T A G 2

Description

3’ tall, tube legs (PG)

5’ tall, tube legs (PG)

5’ tall, angle legs (HDG)with 2.38” O.D. x 0.154“ wall x 3.5’ long mast (HDG)

SPECIFICATIONSPart No.

TRT36

TRT60

TRTAG2

TRT60

The TRT is a Tripod Roof Tower, which comes fully assembled and snaps out into position for quick installation using up to 1/4” dia. connectors. The TRTAG2 mount comes with a 2 3/8” O.D. hot-dip galvanized mast, the TRT36 and TRT60 mounts accept masts up to 1 3/4” O.D. (ordered separately). The bolt-on swivel feet adjust to most any pitch roof. TRT mounts are galvanized for corrosion protection. All TRT mounts are UPS shippable.

TRTAG2

TRT36

Angle leg

Tube leg

TRTAG2 comes with a 2 3/8” O.D. mast.Masts must be ordered separately for

the TRT36 and TRT60.

Please see page 301 for mast options.

TRT36 and TRT60 �t ROHN’s Telescoping masts

(see pages 244-249).

PG = Pre-galvanizedHDG = Hot-dip galvanized

Mast

effective wind velocity formula sheet - … · effective wind velocity formula sheet ... ground...

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