140L5722Q0009_Attachment_05_Structural_Analysis_Report.pdf

EEI JO #: 83431-22

January 12, 2022

Subject: Relocated 40' Self Supporting Tower Site Name: Bald Mesa, UT Site Coordinates: 38.5288389° N; 109.32478° W

Introduction:

Ehresmann Engineering, Inc. has completed a comprehensive structural stress analysis of the above described tower utilizing Tower Numerics tnxTower software. Results of our analysis are summarized in this report along with any exceptions to the requirements for a comprehensive analysis.

Our analysis was completed per TIA-222-H for 103 mph wind with no ice and 40 mph wind with 1/4" ice while supporting the tower loading as outlined in this report. One (1) option was completed as follows:

Option #1: Relocated tower with relocated loading Risk Category II; Exposure C; Topographic Category 2; Crest Height – 4,323’

Supporting Documents:

Item Document Source

Tower Data Original EEI Dwg Package EEI Files

Foundation Data EEI Dwg #83431E01 EEI Files

Geotechnical Report Taylor Geotechnical #21153 dated 12/24/21

BLM Utah Radio

Geotechnical Report Email from Ryan Parsons dated 1/07/22

BLM Utah Radio

Antenna/Equipment and Transmission Line Loading:

Status Qty Antenna Vendor

Antenna/Equip.

Type

Elev. Mount Feedline

Relocated 1 EEI 5’ Lightning Rod 40’ --- ---

Relocated 4 Comprod 1/2 wave 2 bays (4) 1/2”

Relocated 2 Telewave ANT-150-F2 40’ (3) 12’ T-Frames (2) 1/2”

Relocated 1 --- SP212-HF2P2Snm (D00)

(1) 1/2”

Relocated 4 Ubiquiti AF-5G34-S45 30’ (4) Pipe Mounts (4) 1/2”

Results:

Option #1, Relocated Tower with Relocated Loading, 103 mph Wind with no Ice & 40 mph wind with 1/4" ice Analysis per TIA-222-H

Structure Usages:

Structural Component Max % Capacity Controlling Section Comment

Legs 68 0’-20’ Adequate

Leg Bolts (splice/flange) 9 20’ Adequate

Diagonal Brace 23 0’-20’ Adequate

Brace Bolts 37 0’-20’ Adequate

Foundations:

Foundation Item Max % Capacity Comment

New Base 65 Adequate

Foundation results as outlined above are based on EEI Dwg. #83431E01 and geotechnical report as previously furnished by others. Our results are only accurate provided the foundation will be properly installed per EEI foundation details as furnished.

Comments:

Per our analysis, including only those items outlined in the results section of this report, the relocated 40' self-supporting tower located at Bald Mesa, UT will meet the specifications of TIA- 222-H with relocated loading provided all information as supplied to EEI is correct and current and all criteria as outlined in this report is met.

The scope of this analysis is limited to the items specifically outlined in the “Results” section of this report. Items such as antenna mounts, platforms, etc… have not been independently analyzed and Ehresmann Engineering, Inc. makes no claim as to their capacity or adequacy for this application. Antenna mounts or other appurtenances designed and fabricated by

Ehresmann Engineering, Inc. can be analyzed separately upon request. Cost will be quoted at time of request.

Feedlines were considered to be installed as shown on EEI drawing #83431F01. If tower loading is changed or altered in any way, an additional analysis should be completed.

We recommend that all dishes be face mounted. However, in certain cases depending on the tower face width and dish size, leg mounts may be deemed acceptable if evaluated. It is also recommended that dish stiff-arms are attached to a separately installed member and not attached directly to tower diagonals or legs.

Due to the tubular construction of some members in the subject tower it is very difficult to tell the amount of rust, if any, is present in the tower members at this time. These members can be ultrasonically tested to determine the area of steel remaining, however to be absolutely sure that no rusting is taking place, each tubular member would have to be tested every square inch, which is not feasible.

We are not implying that the subject tower does have rusting problems; we are simply stating that we cannot guarantee that no rusting is taking place. EEI cannot account for nor be responsible if there is in fact rusting in the tower members. Our stress ratios as shown on our analysis and in the results section of this report are based on steel being in new condition with no rusting or deterioration.

Upon request we can furnish installation details with materials to allow antenna installation and/or completion of required modifications if outlined. We can also furnish services regarding supervising installation and inspection after project completion. If you require any of the services outlined above please notify for scheduling purposes.

If you elect to have any antenna mounts or modification materials designed, fabricated or furnished by someone other than EEI, we cannot account for nor be held responsible for the items themselves or any adverse effects that they may inflict on the tower. Use of mounts and/or material not designed and furnished by EEI may void this analysis. Caution must be taken when installing antenna mounts so as no damage is inflicted on tower legs.

We would like to point out the fact that we considered this tower to be in near new condition when completing our structural analysis. No allowance was made for missing, damaged or deteriorating tower materials.

This report is based on the following:

1. Tower properly installed and maintained.

2. All members in good condition.

3. All members in place.

4. All bolts in place and properly tightened.

5. Tower being in plumb condition.

6. All tower materials being properly designed, detailed and fabricated in accordance with all applicable codes.

7. All concrete reinforcing steel is in good condition and adequate to develop the foundation loads.

8. Due to lack of information regarding welded connections on towers that were not designed and fabricated by Ehresmann Engineering, the capacity of welded connections was considered to meet or exceed the capacity of the connecting members. It is the Customer/Owner’s option and responsibility to have welded connection capacities verified.

Upon request Ehresmann Engineering Inc. will visit the previously described tower site and inspect tower, lines, and antennas for compliance to this engineering analysis in its entirety upon completion of project. Cost will be quoted at time of request.

If you elect not to have Ehresmann Engineering perform this inspection after project completion, Ehresmann Engineering cannot be held responsible for installation of antennas, antenna mounts, feedlines and/or modification materials in accordance with our analysis and specifications.

Ehresmann Engineering Inc. is not responsible for any modifications completed prior to or hereafter which Ehresmann Engineering Inc. is not or was not directly involved.

Such modifications to include but are not limited to:

1. Replacing or strengthening bracing members.

2. Reinforcing vertical members in any manner.

3. Installing antenna mounts.

4. Extending tower.

Note that this analysis does not take into account unusual or extreme weather conditions such as heavy ice loading with moderate wind speeds, tornadoes, hurricanes, windshear, harmonic conditions or natural frequency conditions.

Ehresmann Engineering, Inc., hereby states that this document represents the entire report and that it assumes no liability for any factual changes that may occur after the date of this report.

All representations, recommendations and conclusions are based upon the information contained and set forth herein. If you are aware of any information which is contrary to that which is contained herein, or you are aware of any defects arising from the original design, material, fabrication or erection deficiencies, you should disregard this report and immediately contact Ehresmann Engineering Inc. Ehresmann Engineering Inc., disclaims all liability for any representation, recommendation or conclusion not expressly stated herein.

Antenna Support Structures – Guyed and Self-Supporting Towers and Monopoles – Steel Fabrication Structural Analysis – Inspection – Specifications – Project Management – Detailing – P.E. Certification

STANDARD TERMS AND CONDITIONS – TOWER ANALYSIS

Ehresmann Engineering, Inc., 4400 W. 31st Street, Yankton, SD 57078

Engineering consultations and tower analyses provided by Ehresmann Engineering, Inc. (hereinafter called EEI) are subject to the following terms and conditions with respect to responsibilities of all parties (EEI, Client, and/or tower Owner). Professional Engineering services performed by EEI, as represented by EEI report, include analysis of the tower(s) in accordance with applicable codes, TIA, ANSI, UBC, considering the latest revisions, or as indicated on the report, and compilation of a report based on the results of Engineering analysis specifying areas of concern with recommendations to correct, modify, or repair any discrepancies found at the site. Note: If tower has never been modified or no antennas added/removed, governing codes will have been those which were applicable at the time of tower erection unless otherwise requested by Client/Owner; Modified or newly designed towers are analyzed to current codes.

Prior to tower analysis, Client/Owner will make available to EEI all known information regarding existing and proposed requirements which affect the work to be performed. Information will include, but not be limited to specifications, contracts, recommendations, plans, change orders, photographs, soil test reports and recommendations, local codes, etc.

Specific information required for tower structural analysis shall include the tower location (state and county); tower model, height, and orientation on tower site; as-built drawings; tower leg, diagonal and girt size with type and grade of steel, and quantity/size of bolts, accurate antenna loading (show configuration on tower; azimuth of microwave dishes, etc.); soil analysis; location size and grade of all guy strand; location and sizes of feed lines; platforms; ladders and other appurtenances, location and size of stabilizers; guy anchor radii; tower base type (pivot or fixed); and foundation design for tower and anchors.

Client will immediately transmit to EEI any new information which becomes available to it or its subcontractors, so that recommended actions, designs, and drawings can be reviewed and new recommendations by EEI made, if needed. Client will provide a representative to answer questions about the project when required by EEI upon 24 hours notice, if possible.

If Client/Owner is unable or unwilling to provide the information specified above, EEI will, upon written request of the Client/Owner, perform or cause to be performed an on-site inspection of the tower to obtain the necessary information.

Client/Owner accepts that lack of any information outlined above shall cause the tower to be analyzed or advice provided based on certain assumptions such as normal soil conditions, manufacturers’ specifications, and professional engineering experience and judgement.

Written analysis provided by EEI represents conditions as furnished above. EEI assumes no liability for any factual changes that may occur after the date of the report. All representations, recommendations, and conclusions of said reports were based upon the information contained and set forth in the report.

The report is prepared on the assumption that the tower and tower components including all modifications or additions, were properly designed, detailed, fabricated, erected, and maintained throughout the life of the tower.

The report assumes also that the tower members and hardware are in place and in good condition; bolts are properly tightened; weep holes on tube and pipe members are open; tower is in plumb condition with proper guy tension; and all members are galvanized or free of corrosion. EEI assumes no liability for any damage or failure of the tower or any tower component if such failure was due to inadequacies in engineering design, detailing, fabricating, erecting, materials, or maintenance.

Recommended modifications outline the scope of work only and are not intended to imply sequence of work or construction procedures.

Persons performing modification work will use safe and acceptable industry practices to effect modifications, and will be responsible for compliance with all federal, state and local safety codes.

EEI will not be liable to any incorrect advice, judgement, or decision based on any inaccurate information furnished by Client, and Client will indemnify EEI against all liability arising out of or contributed to by such information.

If Client/Owner becomes aware of any information which is contrary to that contained in the report; or if Client/Owner becomes aware of any defects arising from the original design, material, fabrication, and erection deficiencies, Client/Owner shall disregard said report and immediately notify EEI.

Often EEI is retained to provide partial engineering services for a project and is not liable for portions of the project EEI is not retained to provide services for. Please refer to EEI’s project consultant proposal-agreement-contract with the Client for scope of work.

EEI’s liability to Client and all contractors and subcontractors on the project, for damages due to professional negligence, or breach of any other obligation to Client or others, will be limited to the amount of EEI’s fee received on the project unless other specific arrangements are made in writing. In the event Client does not wish to limit EEI’s amount of liability on the project, EEI will consider waiving this limitation on written notice from Client received within 10 days after an agreement is fully executed or before EEI’s work on the project begins, whichever is earlier. The Client may request the size of insurance policy limits and time period of coverage, and Client will pay additional consideration equal to EEI’s total insurance premium fee (when a policy is arranged with an insurance carrier) plus 25% as a charge for a Waiver of Limitation on Liability. This 25% charge is a charge for insurance and an increase in consideration for the greater risk involved where work is performed with no limitation of liability.

Client will notify the Owner and any contractor or subcontractor who performs work in connection with any work done by EEI of the limitation of liability for design defects, errors, omissions or professional negligence, and to require as a condition precedent to their performing their work ,a like indemnity and limitation of liability on their part as against EEI. In the event the Client fails to obtain a like limitation, Client will indemnify EEI for any liability to any third part.

Ehresmann Engineering, Inc.

4400 West 31st St.

Yankton, SD 57078

Phone: 605-665-7532

FAX: 605-665-9780

Job: 83431 - Bald Mesa, UT Project: 40' EEI SSTA SS Client: BLM Utah Radio Drawn by: J Schrempp App'd:

Code: TIA-222-H Date: 01/18/22 Scale: NTS Path:

Z:\EEI JOBS\8343 - Bald Mesa, UT\83431 - Bald Mesa, UT.eri Dwg No. E-1

40.0 ft

20.0 ft

0.0 ft

REACTIONS - 103 mph WIND TORQUE 2 kip-ft

6 K

SHEAR

169 kip-ft

MOMENT

5 K

AXIAL

40 mph WIND - 0.250 in ICE TORQUE 0 kip-ft

1 K

SHEAR

31 kip-ft

MOMENT

6 K

AXIAL

SHEAR: 3 K

UPLIFT: -36 K

SHEAR: 3 K

DOWN: 40 K

MAX. CORNER REACTIONS AT BASE:

ARE FACTORED

ALL REACTIONS

S e ct io n

T

T

L g s H

S S

.8 x.

g

G ra d e

A

-5

D ia g o n a ls

L

/4 x1

/4 x3

/1

D ia g o n a l G ra d e A

T o p

G ir ts L

/4 x1

/4 x3 /1

N

.A

F a ce

W id th ft

.0

P a n e ls ft

W ig h t

(K

0.

0.

1.

5' Lightning Rod (Proposed) 40 (2) Comprod 1/2 wave 2 bay's (Proposed)

40 Comprod 1/2 wave 2 bay's (Proposed) 40 Comprod 1/2 wave 2 bay's (Proposed) 40 ANT-150-F2 (Proposed) 40 ANT-150-F2 (Proposed) 40 SP212-HF2P2Snm(D00) (Proposed) 40 (3) 12' EEI T-FRAMES (Proposed) 40 (2) AF-5G34-S45 (Proposed) 30 AF-5G34-S45 (Proposed) 30 AF-5G34-S45 (Proposed) 30DESIGNED APPURTENANCE LOADING

TYPE TYPEELEVATION ELEVATION

5' Lightning Rod (Proposed) 40

(2) Comprod 1/2 wave 2 bay's (Proposed)

Comprod 1/2 wave 2 bay's (Proposed) 40

Comprod 1/2 wave 2 bay's (Proposed) 40

ANT-150-F2 (Proposed) 40

ANT-150-F2 (Proposed) 40

SP212-HF2P2Snm(D00) (Proposed) 40

(3) 12' EEI T-FRAMES (Proposed) 40

(2) AF-5G34-S45 (Proposed) 30

AF-5G34-S45 (Proposed) 30

AF-5G34-S45 (Proposed) 30

MATERIAL STRENGTH

GRADE GRADEFy FyFu Fu

A572-50 50 ksi 65 ksi A36 36 ksi 58 ksi

TOWER DESIGN NOTES

1. Tower is located in Grand County, Utah.

2. Tower designed for Exposure C to the TIA-222-H Standard.

3. Tower designed for a 103 mph basic wind in accordance with the TIA-222-H Standard.

4. Tower is also designed for a 40 mph basic wind with 0.25 in ice. Ice is considered to increase in thickness with height.

5. Deflections are based upon a 60 mph wind.

6. Tower Risk Category II.

7. Topographic Category 2 with Crest Height of 4323.000 ft

8. Weld together tower sections have flange connections.

9. Connections use galvanized A325 bolts, nuts and locking devices. Installation per

TIA/EIA-222 and AISC Specifications.

10. Tower members are "hot dipped" galvanized in accordance with ASTM A123 and ASTM

A153 Standards.

11. Welds are fabricated with ER-70S-6 electrodes.

12. TOWER RATING: 67.5%

ttnnxxTToowweerr Job

83431 - Bald Mesa, UT

Page

Ehresmann Engineering, Inc.

4400 West 31st St.

Project

40' EEI SSTA SS

Date

13:27:07 01/18/22 Yankton, SD 57078

Phone: 605-665-7532

FAX: 605-665-9780

Client BLM Utah Radio

Designed by

J Schrempp

Tower Input Data

The main tower is a 3x free standing tower with an overall height of 40.000 ft above the ground line.

The base of the tower is set at an elevation of 0.000 ft above the ground line.

The face width of the tower is 5.052 ft at the top and 5.052 ft at the base.

This tower is designed using the TIA-222-H standard.

The following design criteria apply:

Tower is located in Grand County, Utah.

Tower base elevation above sea level: 8590.000 ft.

Basic wind speed of 103 mph.

Risk Category II.

Exposure Category C.

Simplified Topographic Factor Procedure for wind speed-up calculations is used.

Topographic Category: 2.

Crest Height: 4323.000 ft.

Nominal ice thickness of 0.250 in.

Ice thickness is considered to increase with height.

Ice density of 56 pcf.

A wind speed of 40 mph is used in combination with ice.

Temperature drop of 50 °F.

Deflections calculated using a wind speed of 60 mph.

Weld together tower sections have flange connections..

Connections use galvanized A325 bolts, nuts and locking devices. Installation per TIA/EIA-222 and AISC

Specifications..

Tower members are ''hot dipped'' galvanized in accordance with ASTM A123 and ASTM A153 Standards..

Welds are fabricated with ER-70S-6 electrodes..

Pressures are calculated at each section.

Stress ratio used in tower member design is 1.

Local bending stresses due to climbing loads, feed line supports, and appurtenance mounts are not considered.

Options

Consider Moments - Legs Distribute Leg Loads As Uniform Use ASCE 10 X-Brace Ly Rules Consider Moments - Horizontals Assume Legs Pinned Calculate Redundant Bracing Forces Consider Moments - Diagonals √ Assume Rigid Index Plate Ignore Redundant Members in FEA Use Moment Magnification √ Use Clear Spans For Wind Area SR Leg Bolts Resist Compression √ Use Code Stress Ratios √ Use Clear Spans For KL/r √ All Leg Panels Have Same Allowable √ Use Code Safety Factors - Guys Retension Guys To Initial Tension Offset Girt At Foundation Escalate Ice Bypass Mast Stability Checks Consider Feed Line Torque Always Use Max Kz Use Azimuth Dish Coefficients √ Include Angle Block Shear Check Use Special Wind Profile √ Project Wind Area of Appurt. Use TIA-222-H Bracing Resist. Exemption Include Bolts In Member Capacity Autocalc Torque Arm Areas Use TIA-222-H Tension Splice Exemption √ Leg Bolts Are At Top Of Section Add IBC .6D+W Combination Poles Secondary Horizontal Braces Leg √ Sort Capacity Reports By Component Include Shear-Torsion Interaction Use Diamond Inner Bracing (4 Sided) Triangulate Diamond Inner Bracing Always Use Sub-Critical Flow SR Members Have Cut Ends Treat Feed Line Bundles As Cylinder Use Top Mounted Sockets SR Members Are Concentric Ignore KL/ry For 60 Deg. Angle Legs Pole Without Linear Attachments Pole With Shroud Or No Appurtenances Outside and Inside Corner Radii Are

Known

83431 - Bald Mesa, UT

Page

Ehresmann Engineering, Inc.

4400 West 31st St.

Project

40' EEI SSTA SS

Date

13:27:07 01/18/22 Yankton, SD 57078

Phone: 605-665-7532

FAX: 605-665-9780

Client BLM Utah Radio

Leg B Leg C

Leg A

Fa ce

A Face B

Face C

Triangular To wer

Wind Norma l

Wind 90

Wind 180

Z

X

Tower Section Geometry

Tower Section

Elevation ft

Assembly Database

Description Section Width

Number of

Sections

Length

T1 40.000-20.000 5.052 1 20.000 T2 20.000-0.000 5.052 1 20.000

Tower Section Geometry (cont’d)

Diagonal Spacing

Bracing Type

Has K Brace

End Panels

Has Horizontals

Top Girt Offset in

Bottom Girt Offset

T1 40.000-20.000 5.000 X Brace No No 0.000 0.000 T2 20.000-0.000 5.000 X Brace No No 0.000 0.000

83431 - Bald Mesa, UT

Page

Ehresmann Engineering, Inc.

4400 West 31st St.

Project

40' EEI SSTA SS

Date

13:27:07 01/18/22 Yankton, SD 57078

Phone: 605-665-7532

FAX: 605-665-9780

Client BLM Utah Radio

Designed by

J Schrempp

Tower Elevation ft

Leg Type

Size

Grade

T1 40.000-20.000 Pipe HSS2.875x.203 A572-50 (50 ksi)

Equal Angle L1 3/4x1 3/4x3/16 A36 (36 ksi)

T2 20.000-0.000 Pipe HSS2.875x.203 A572-50 (50 ksi)

Equal Angle L1 3/4x1 3/4x3/16 A36 (36 ksi) ft

T1 40.000-20.000 Equal Angle L1 3/4x1 3/4x3/16 A36 (36 ksi)

Solid Round A36

Gusset Area

(per face) ft2

Gusset Thickness

Gusset Grade Adjust. Factor Af

Adjust.

Factor

Ar

Weight Mult.

Double Angle Stitch Bolt Spacing

Diagonals in

Double Angle Stitch Bolt Spacing

Horizontals in

Double Angle Stitch Bolt Spacing

Redundants in

T1 40.000-20.000

2.222 0.250 A36 (36 ksi)

1 1.03 1.1 36.000 36.000 36.000

T2 20.000-0.000

2.222 0.250 A36

1 1.03 1.1 36.000 36.000 36.000

K Factors1

Calc K

Single Angles

Calc K

Solid Rounds

Legs X Brace Diags

X Y

K Brace Diags

X Y

Single Diags

Y

Girts

Horiz.

Sec.

Horiz.

Inner Brace

T1 40.000-20.000

Yes No 1 1

T2 20.000-0.000

Yes No 1 1

1Note: K factors are applied to member segment lengths. K-braces without inner supporting members will have the K factor in the out-of-plane direction applied to the overall length.

83431 - Bald Mesa, UT

Page

Ehresmann Engineering, Inc.

4400 West 31st St.

Project

40' EEI SSTA SS

Date

13:27:07 01/18/22 Yankton, SD 57078

Phone: 605-665-7532

FAX: 605-665-9780

Client BLM Utah Radio

Designed by

J Schrempp

Tower Elevation ft

Leg Diagonal Top Girt Bottom Girt Mid Girt Long Horizontal Short Horizontal

Net Width Deduct

U

Net Width Deduct

Net

Deduct

Deduct

Deduct

Deduct

T1 40.000-20.000

0.000 1 0.000 0.75 0.000 0.75 0.000 0.75 0.000 0.75 0.000 0.75 0.000 0.75

T2 20.000-0.000

0.000 1 0.000 0.75 0.000 0.75 0.000 0.75 0.000 0.75 0.000 0.75 0.000 0.75 ft

Redundant Horizontal

Redundant Diagonal

Redundant Sub-Diagonal

Redundant Sub-Horizontal

Redundant Vertical Redundant Hip Redundant Hip Diagonal

Net Width Deduct

Deduct

Deduct

Deduct

Deduct

T1 40.000-20.000

0.000 0.75 0.000 0.75 0.000 0.75 0.000 0.75 0.000 0.75 0.000 0.75 0.000 0.75

T2 20.000-0.000

0.000 0.75 0.000 0.75 0.000 0.75 0.000 0.75 0.000 0.75 0.000 0.75 0.000 0.75 ft

Leg Connection

Type

Leg Diagonal Top Girt Bottom Girt Mid Girt Long Horizontal Short Horizontal

Bolt Size in

No. Bolt Size in

No. Bolt Size in

No. Bolt Size in

No. Bolt Size in

No. Bolt Size in

No. Bolt Size in

No.

T1 40.000-20.000

Flange 0.750 A325N

0 0.625 A325N

1 0.625 A325N

1 0.625 A325N

0 0.625 A325N

0 0.625 A325N

0 0.625 A325N

T2 20.000-0.000

Flange 1.000 A325N

3 0.625 A325N

1 0.625 A325N

0 0.625 A325N

0 0.625 A325N

0 0.625 A325N

0 0.625 A325N

Feed Line/Linear Appurtenances - Entered As Round Or Flat

Description Face or

Leg

Allow Shield

Exclude From

Torque Calculation

Component

Placement

Total Number

Number Per Row

Clear Spacing in

Width or Diameter

Perimeter

Weight klf

LDF4-50A (1/2

FOAM)

(Proposed)

C No Yes Ar (CaAa) 40.000 - 0.000 4 4 2.370 0.630 0.000

LDF4-50A (1/2

FOAM)

(Proposed)

C No Yes Ar (CaAa) 40.000 - 0.000 3 3 2.370 0.630 0.000

LDF4-50A (1/2

FOAM)

(Proposed)

C No Yes Ar (CaAa) 30.000 - 0.000 4 4 2.370 0.630 0.000

83431 - Bald Mesa, UT

Page

Ehresmann Engineering, Inc.

4400 West 31st St.

Project

40' EEI SSTA SS

Date

13:27:07 01/18/22 Yankton, SD 57078

Phone: 605-665-7532

FAX: 605-665-9780

Client BLM Utah Radio

Designed by

Feed Line/Linear Appurtenances - Entered As Area

Leg

Allow Shield

Exclude From

Torque Calculation

Component

Total

CAAA

ft2/ft klf

Safety Line 3/8 C No Yes CaAa (In Face)

40.000 - 0.000 1 No Ice 1/2'' Ice

0.037 0.137

0.000 0.001

Feed Line/Linear Appurtenances Section Areas

Section

Tower Elevation

Face AR

AF

In Face ft2

CAAA

Out Face

K T1 40.000-20.000 A

B C

0.000 0.000 0.000

0.000 0.000 0.000

0.000 0.000

12.090

0.000 0.000 0.000

0.000 0.000 0.031

T2 20.000-0.000 A B C

0.000 0.000 0.000

0.000 0.000 0.000

0.000 0.000

14.610

0.000 0.000 0.000

0.000

0.037

Feed Line/Linear Appurtenances Section Areas - With Ice

Section

Tower Elevation ft

Face or

Leg

Ice Thickness

AR

AF

In Face ft2

CAAA

Out Face

T1 40.000-20.000 A

B C

0.318 0.000 0.000 0.000

0.000 0.000 0.000

0.000 0.000

24.790

0.000 0.000 0.000

0.000 0.000 0.104

T2 20.000-0.000 A B C

0.285 0.000 0.000 0.000

0.000 0.000 0.000

0.000 0.000

28.281

0.000 0.000 0.000

0.000

0.113

Shielding Factor Ka

Feed Line Record No.

Description Feed Line Segment Elev.

Ka No Ice

Ka Ice

T1 1 Safety Line 3/8 20.00 - 40.00 1.0000 1.0000

T1 2 LDF4-50A (1/2 FOAM) 20.00 - 40.00 1.0000 1.0000

T1 3 LDF4-50A (1/2 FOAM) 20.00 - 40.00 1.0000 1.0000

T1 4 LDF4-50A (1/2 FOAM) 20.00 - 30.00 1.0000 1.0000

T2 1 Safety Line 3/8 0.00 - 20.00 1.0000 1.0000

T2 2 LDF4-50A (1/2 FOAM) 0.00 - 20.00 1.0000 1.0000

T2 3 LDF4-50A (1/2 FOAM) 0.00 - 20.00 1.0000 1.0000

T2 4 LDF4-50A (1/2 FOAM) 0.00 - 20.00 1.0000 1.0000

83431 - Bald Mesa, UT

Page

Ehresmann Engineering, Inc.

4400 West 31st St.

Project

40' EEI SSTA SS

Date

13:27:07 01/18/22 Yankton, SD 57078

Phone: 605-665-7532

FAX: 605-665-9780

Client BLM Utah Radio

Discrete Tower Loads

Leg

Offset Type

Offsets:

Horz

Lateral Vert ft ft ft

Azimuth Adjustment

Front

Side

5' Lightning Rod (Proposed)

C None 0.0000 40.000 No Ice 1/2'' Ice

1.000 2.017

1.000 2.017

0.040 0.049

(2) Comprod 1/2 wave 2 bay's (Proposed)

A From Leg 3.500 0.000 0.000

0.0000 40.000 No Ice 1/2'' Ice

3.500 5.000

3.500 5.000

0.024 0.050

Comprod 1/2 wave 2 bay's (Proposed)

B From Leg 3.500 0.000 0.000

0.0000 40.000 No Ice 1/2'' Ice

3.500 5.000

3.500 5.000

0.024 0.050

Comprod 1/2 wave 2 bay's (Proposed)

C From Leg 3.500 0.000 0.000

0.0000 40.000 No Ice 1/2'' Ice

3.500 5.000

3.500 5.000

0.024 0.050

ANT-150-F2

(Proposed)

B From Leg 3.500 0.000 0.000

0.0000 40.000 No Ice 1/2'' Ice

1.294 1.598

1.294 1.598

0.012 0.022

ANT-150-F2

(Proposed)

C From Leg 3.500 0.000 0.000

0.0000 40.000 No Ice 1/2'' Ice

1.294 1.598

1.294 1.598

0.012 0.022

SP212-HF2P2Snm(D00) (Proposed)

C From Leg 3.500 0.000 0.000

0.0000 40.000 No Ice 1/2'' Ice

2.890 5.780

2.890 5.780

0.020 0.050

(3) 12' EEI T-FRAMES

(Proposed)

C None 0.0000 40.000 No Ice 1/2'' Ice

23.730 32.400

23.730 32.400

1.715 1.925

Dishes

Leg

Dish Type

Offset Type

Offsets:

Horz

Lateral Vert ft

Adjustment

3 dB Beam

Outside Diameter

Aperture Area

(2) AF-5G34-S45

(Proposed) A Paraboloid w/o

Radome From Leg

1.000 0.000 0.000

Worst 30.000 3.440 No Ice 1/2'' Ice

9.294 9.750

0.030 0.080

AF-5G34-S45

(Proposed)

B Paraboloid w/o Radome

From Leg

1.000 0.000 0.000

Worst 30.000 3.440 No Ice 1/2'' Ice

9.294 9.750

0.030 0.080

AF-5G34-S45

(Proposed)

C Paraboloid w/o Radome

From Leg

1.000 0.000 0.000

Worst 30.000 3.440 No Ice 1/2'' Ice

9.294 9.750

0.030 0.080

Discrete Appurtenance Pressures - No Ice GH = 0.850

83431 - Bald Mesa, UT

Page

Ehresmann Engineering, Inc.

4400 West 31st St.

Project

40' EEI SSTA SS

Date

13:27:07 01/18/22 Yankton, SD 57078

Phone: 605-665-7532

FAX: 605-665-9780

Client BLM Utah Radio

Designed by

J Schrempp

Description Aiming Azimuth

Offsetx

Offsetz z

Kz qz ksf

CAAC

Front ft2

CAAC

Side ft2

5' Lightning Rod 0.0000 0.040 0.000 0.000 40.000 1.044 0.036 1.000 1.000 Comprod 1/2 wave 2 bay's

0.0000 0.048 0.000 -6.417 40.000 1.044 0.036 7.000 7.000

Comprod 1/2 wave 2 bay's

120.0000 0.024 5.557 3.208 40.000 1.044 0.036 3.500 3.500

Comprod 1/2 wave 2 bay's

240.0000 0.024 -5.557 3.208 40.000 1.044 0.036 3.500 3.500

ANT-150-F2 120.0000 0.012 5.557 3.208 40.000 1.044 0.036 1.294 1.294

ANT-150-F2 240.0000 0.012 -5.557 3.208 40.000 1.044 0.036 1.294 1.294

SP212-HF2P2Snm(D00) 240.0000 0.020 -5.557 3.208 40.000 1.044 0.036 2.890 2.890

(3) 12' EEI T-FRAMES 0.0000 1.715 0.000 0.000 40.000 1.044 0.036 23.730 23.730

Sum

Weight:

1.895

Discrete Appurtenance Pressures - With Ice GH = 0.850

Description Aiming

Front ft2

CAAC

Side tz

5' Lightning Rod 0.0000 0.046 0.000 0.000 40.000 1.044 0.005 1.664 1.664 0.327 Comprod 1/2 wave 2 bay's

0.0000 0.082 0.000 -6.417 40.000 1.044 0.005 8.961 8.961 0.327

Comprod 1/2 wave 2 bay's

120.0000 0.041 5.557 3.208 40.000 1.044 0.005 4.480 4.480 0.327

Comprod 1/2 wave 2 bay's

240.0000 0.041 -5.557 3.208 40.000 1.044 0.005 4.480 4.480 0.327

ANT-150-F2 120.0000 0.019 5.557 3.208 40.000 1.044 0.005 1.493 1.493 0.327

ANT-150-F2 240.0000 0.019 -5.557 3.208 40.000 1.044 0.005 1.493 1.493 0.327

SP212-HF2P2Snm(D00) 240.0000 0.040 -5.557 3.208 40.000 1.044 0.005 4.779 4.779 0.327

(3) 12' EEI T-FRAMES 0.0000 1.852 0.000 0.000 40.000 1.044 0.005 29.396 29.396 0.327 Sum

2.139

Discrete Appurtenance Pressures - Service GH = 0.850

Description Aiming

Front ft2

CAAC

Side ft2

5' Lightning Rod 0.0000 0.040 0.000 0.000 40.000 1.044 0.012 1.000 1.000 Comprod 1/2 wave 2 bay's

0.0000 0.048 0.000 -6.417 40.000 1.044 0.012 7.000 7.000

Comprod 1/2 wave 2 bay's

120.0000 0.024 5.557 3.208 40.000 1.044 0.012 3.500 3.500

Comprod 1/2 wave 2 bay's

240.0000 0.024 -5.557 3.208 40.000 1.044 0.012 3.500 3.500

ANT-150-F2 120.0000 0.012 5.557 3.208 40.000 1.044 0.012 1.294 1.294

ANT-150-F2 240.0000 0.012 -5.557 3.208 40.000 1.044 0.012 1.294 1.294

SP212-HF2P2Snm(D00) 240.0000 0.020 -5.557 3.208 40.000 1.044 0.012 2.890 2.890

(3) 12' EEI T-FRAMES 0.0000 1.715 0.000 0.000 40.000 1.044 0.012 23.730 23.730

Sum

1.895

83431 - Bald Mesa, UT

Page

Ehresmann Engineering, Inc.

4400 West 31st St.

Project

40' EEI SSTA SS

Date

13:27:07 01/18/22 Yankton, SD 57078

Phone: 605-665-7532

FAX: 605-665-9780

Client BLM Utah Radio

Designed by

Dish Pressures - No Ice

Dish Description

Aiming Azimuth

Weight K

Offsetx ft

Offsetz

Kz

AA

qz ksf

30.000 AF-5G34-S45 0.0000 0.060 0.000 -3.917 0.982 18.588 0.034

30.000 AF-5G34-S45 120.0000 0.030 3.392 1.958 0.982 9.294 0.034

30.000 AF-5G34-S45 240.0000 0.030 -3.392 1.958 0.982 9.294 0.034

Sum

0.120

Dish Pressures - With Ice

Dish Description

Aiming Azimuth

Weight K

Offsetx ft

Offsetz qz ksf tz in

30.000 AF-5G34-S45 0.0000 0.124 0.000 -3.917 0.982 19.167 0.005 0.318

30.000 AF-5G34-S45 120.0000 0.062 3.392 1.958 0.982 9.584 0.005 0.318

30.000 AF-5G34-S45 240.0000 0.062 -3.392 1.958 0.982 9.584 0.005 0.318

Sum

0.247

Dish Pressures - Service

Dish Description

Aiming Azimuth

Weight K

Offsetx ft

Offsetz qz ksf

30.000 AF-5G34-S45 0.0000 0.060 0.000 -3.917 0.982 18.588 0.011

30.000 AF-5G34-S45 120.0000 0.030 3.392 1.958 0.982 9.294 0.011

30.000 AF-5G34-S45 240.0000 0.030 -3.392 1.958 0.982 9.294 0.011

Sum

0.120

Force Totals

Load Case

Vertical Forces

Sum of Forces

X K

Sum of Forces

Z K

Sum of Overturning Moments, Mx kip-ft

Sum of Overturning Moments, Mz kip-ft

Sum of Torques

Leg Weight 0.716 Bracing Weight 0.828 Total Member Self-Weight 1.545 -0.130 0.111 Gusset Weight 0.136 Total Weight 3.765 -0.130 0.111 Wind 0 deg - No Ice 0.000 -6.109 -168.864 0.111 -0.489 Wind 30 deg - No Ice 2.944 -5.099 -142.230 -81.930 -1.368 Wind 60 deg - No Ice 5.035 -2.907 -81.397 -140.646 -1.881 Wind 90 deg - No Ice 5.888 0.000 -0.130 -163.972 -1.889 Wind 120 deg - No Ice 5.291 3.055 84.237 -146.017 -1.391 Wind 150 deg - No Ice 2.944 5.099 141.970 -81.930 -0.521 Wind 180 deg - No Ice 0.000 5.814 162.402 0.111 0.489 Wind 210 deg - No Ice -2.944 5.099 141.970 82.153 1.368 Wind 240 deg - No Ice -5.291 3.055 84.237 146.239 1.881 Wind 270 deg - No Ice -5.888 0.000 -0.130 164.194 1.889

83431 - Bald Mesa, UT

Page

Ehresmann Engineering, Inc.

4400 West 31st St.

Project

40' EEI SSTA SS

Date

13:27:07 01/18/22 Yankton, SD 57078

Phone: 605-665-7532

FAX: 605-665-9780

Client BLM Utah Radio

Designed by

J Schrempp

Load Case

Forces

Sum of Forces

X K

Sum of Forces

Z K

Sum of Overturning Moments, Mx kip-ft

Sum of Overturning Moments, Mz

Sum of Torques

Wind 300 deg - No Ice -5.035 -2.907 -81.397 140.869 1.391 Wind 330 deg - No Ice -2.944 -5.099 -142.230 82.153 0.521 Member Ice 0.505 Gusset Ice 0.041 Total Weight Ice 4.832 -0.258 0.220 Wind 0 deg - Ice 0.000 -1.134 -31.294 0.220 -0.122 Wind 30 deg - Ice 0.551 -0.955 -26.565 -14.968 -0.250 Wind 60 deg - Ice 0.946 -0.546 -15.336 -25.896 -0.311 Wind 90 deg - Ice 1.103 0.000 -0.258 -30.157 -0.288 Wind 120 deg - Ice 0.982 0.567 15.260 -26.658 -0.189 Wind 150 deg - Ice 0.551 0.955 26.049 -14.968 -0.038 Wind 180 deg - Ice 0.000 1.092 29.899 0.220 0.122 Wind 210 deg - Ice -0.551 0.955 26.049 15.408 0.250 Wind 240 deg - Ice -0.982 0.567 15.260 27.098 0.311 Wind 270 deg - Ice -1.103 0.000 -0.258 30.597 0.288 Wind 300 deg - Ice -0.946 -0.546 -15.336 26.337 0.189 Wind 330 deg - Ice -0.551 -0.955 -26.565 15.408 0.038 Total Weight 3.765 -0.130 0.111 Wind 0 deg - Service 0.000 -2.073 -57.388 0.111 -0.166 Wind 30 deg - Service 0.999 -1.730 -48.350 -27.728 -0.464 Wind 60 deg - Service 1.709 -0.986 -27.707 -47.653 -0.638 Wind 90 deg - Service 1.998 0.000 -0.130 -55.568 -0.641 Wind 120 deg - Service 1.795 1.037 28.498 -49.475 -0.472 Wind 150 deg - Service 0.999 1.730 48.089 -27.728 -0.177 Wind 180 deg - Service 0.000 1.973 55.023 0.111 0.166 Wind 210 deg - Service -0.999 1.730 48.089 27.951 0.464 Wind 240 deg - Service -1.795 1.037 28.498 49.697 0.638 Wind 270 deg - Service -1.998 0.000 -0.130 55.790 0.641 Wind 300 deg - Service -1.709 -0.986 -27.707 47.875 0.472 Wind 330 deg - Service -0.999 -1.730 -48.350 27.951 0.177

Load Combinations

Comb.

No.

Description

1 Dead Only 2 1.2 Dead+1.0 Wind 0 deg - No Ice 3 0.9 Dead+1.0 Wind 0 deg - No Ice 4 1.2 Dead+1.0 Wind 30 deg - No Ice 5 0.9 Dead+1.0 Wind 30 deg - No Ice 6 1.2 Dead+1.0 Wind 60 deg - No Ice 7 0.9 Dead+1.0 Wind 60 deg - No Ice 8 1.2 Dead+1.0 Wind 90 deg - No Ice 9 0.9 Dead+1.0 Wind 90 deg - No Ice 10 1.2 Dead+1.0 Wind 120 deg - No Ice 11 0.9 Dead+1.0 Wind 120 deg - No Ice 12 1.2 Dead+1.0 Wind 150 deg - No Ice 13 0.9 Dead+1.0 Wind 150 deg - No Ice 14 1.2 Dead+1.0 Wind 180 deg - No Ice 15 0.9 Dead+1.0 Wind 180 deg - No Ice 16 1.2 Dead+1.0 Wind 210 deg - No Ice 17 0.9 Dead+1.0 Wind 210 deg - No Ice 18 1.2 Dead+1.0 Wind 240 deg - No Ice 19 0.9 Dead+1.0 Wind 240 deg - No Ice 20 1.2 Dead+1.0 Wind 270 deg - No Ice 21 0.9 Dead+1.0 Wind 270 deg - No Ice

83431 - Bald Mesa, UT

Page

Ehresmann Engineering, Inc.

4400 West 31st St.

Project

40' EEI SSTA SS

Date

13:27:07 01/18/22 Yankton, SD 57078

Phone: 605-665-7532

FAX: 605-665-9780

Client BLM Utah Radio

Designed by

J Schrempp

Comb.

No.

Description

22 1.2 Dead+1.0 Wind 300 deg - No Ice 23 0.9 Dead+1.0 Wind 300 deg - No Ice 24 1.2 Dead+1.0 Wind 330 deg - No Ice 25 0.9 Dead+1.0 Wind 330 deg - No Ice 26 1.2 Dead+1.0 Ice+1.0 Temp 27 1.2 Dead+1.0 Wind 0 deg+1.0 Ice+1.0 Temp 28 1.2 Dead+1.0 Wind 30 deg+1.0 Ice+1.0 Temp 29 1.2 Dead+1.0 Wind 60 deg+1.0 Ice+1.0 Temp 30 1.2 Dead+1.0 Wind 90 deg+1.0 Ice+1.0 Temp 31 1.2 Dead+1.0 Wind 120 deg+1.0 Ice+1.0 Temp 32 1.2 Dead+1.0 Wind 150 deg+1.0 Ice+1.0 Temp 33 1.2 Dead+1.0 Wind 180 deg+1.0 Ice+1.0 Temp 34 1.2 Dead+1.0 Wind 210 deg+1.0 Ice+1.0 Temp 35 1.2 Dead+1.0 Wind 240 deg+1.0 Ice+1.0 Temp 36 1.2 Dead+1.0 Wind 270 deg+1.0 Ice+1.0 Temp 37 1.2 Dead+1.0 Wind 300 deg+1.0 Ice+1.0 Temp 38 1.2 Dead+1.0 Wind 330 deg+1.0 Ice+1.0 Temp 39 Dead+Wind 0 deg - Service 40 Dead+Wind 30 deg - Service 41 Dead+Wind 60 deg - Service 42 Dead+Wind 90 deg - Service 43 Dead+Wind 120 deg - Service 44 Dead+Wind 150 deg - Service 45 Dead+Wind 180 deg - Service 46 Dead+Wind 210 deg - Service 47 Dead+Wind 240 deg - Service 48 Dead+Wind 270 deg - Service 49 Dead+Wind 300 deg - Service 50 Dead+Wind 330 deg - Service

Maximum Member Forces

No.

Elevation ft Component

Type Condition Gov.

Load

Axial

Major Axis Moment kip-ft

Minor Axis Moment kip-ft T1 40 - 20 Leg Max Tension 23 10.122 0.013 0.009

Max. Compression 2 -12.359 -0.000 0.081 Max. Mx 20 -1.132 0.117 -0.006 Max. My 24 -1.058 0.052 0.102 Max. Vy 8 -0.777 0.060 0.005 Max. Vx 2 0.624 -0.000 0.046 Diagonal Max Tension 4 2.305 0.000 0.000 Max. Compression 4 -2.315 0.000 0.000 Max. Mx 2 1.895 0.013 -0.002 Max. My 4 -2.088 -0.000 0.004 Max. Vy 2 -0.007 0.013 -0.002 Max. Vx 4 -0.001 0.007 0.004 Top Girt Max Tension 10 0.426 0.000 0.000 Max. Compression 14 -0.426 0.000 0.000 Max. Mx 26 0.044 -0.012 0.000 Max. Vy 26 -0.010 0.000 0.000

T2 20 - 0 Leg Max Tension 23 32.460 0.062 0.036 Max. Compression 2 -36.207 0.000 0.000 Max. Mx 20 -1.447 0.222 -0.007 Max. My 24 -1.429 0.105 0.196 Max. Vy 20 -0.074 0.222 -0.007 Max. Vx 24 -0.065 0.105 0.196 Diagonal Max Tension 5 2.931 0.000 0.000 Max. Compression 18 -3.063 0.000 0.000

83431 - Bald Mesa, UT

Page

Ehresmann Engineering, Inc.

4400 West 31st St.

Project

40' EEI SSTA SS

Date

13:27:07 01/18/22 Yankton, SD 57078

Phone: 605-665-7532

FAX: 605-665-9780

Client BLM Utah Radio

Designed by

J Schrempp

Section No.

Elevation ft

Component Type

Condition Gov.

Load

Axial

Major Axis Moment kip-ft

Minor Axis Moment kip-ft Max. Mx 2 2.230 0.032 -0.005 Max. My 20 2.401 0.022 -0.008 Max. Vy 2 -0.012 0.032 -0.005 Max. Vx 20 0.002 0.024 -0.008

Maximum Reactions

Location Condition Gov.

Comb.

Vertical K

Horizontal, X K

Horizontal, Z K

Leg C Max. Vert 18 40.080 2.869 -1.905 Max. Hx 18 40.080 2.869 -1.905 Max. Hz 5 -31.343 -2.189 1.819 Min. Vert 7 -36.013 -2.667 1.788 Min. Hx 7 -36.013 -2.667 1.788 Min. Hz 18 40.080 2.869 -1.905

Leg B Max. Vert 10 40.027 -2.896 -1.856 Max. Hx 23 -36.052 2.695 1.740 Max. Hz 23 -36.052 2.695 1.740 Min. Vert 23 -36.052 2.695 1.740 Min. Hx 10 40.027 -2.896 -1.856 Min. Hz 10 40.027 -2.896 -1.856

Leg A Max. Vert 2 40.107 -0.056 3.437 Max. Hx 21 1.156 0.866 0.031 Max. Hz 2 40.107 -0.056 3.437 Min. Vert 15 -35.992 0.056 -3.204 Min. Hx 8 1.542 -0.866 0.041 Min. Hz 15 -35.992 0.056 -3.204

Tower Mast Reaction Summary

Combination

Shearx

Shearz

Overturning Moment, Mx kip-ft

Overturning Moment, Mz

Torque

Dead Only 3.765 0.000 0.000 -0.130 0.111 0.000

1.2 Dead+1.0 Wind 0 deg - No

Ice

4.518 0.000 -6.109 -168.891 0.133 -0.489

0.9 Dead+1.0 Wind 0 deg - No

Ice

3.388 0.000 -6.109 -168.851 0.100 -0.489

1.2 Dead+1.0 Wind 30 deg - No

Ice

4.518 2.944 -5.099 -142.257 -81.908 -1.368

0.9 Dead+1.0 Wind 30 deg - No

Ice

3.388 2.944 -5.099 -142.217 -81.942 -1.368

1.2 Dead+1.0 Wind 60 deg - No

Ice

4.518 5.035 -2.907 -81.423 -140.624 -1.881

0.9 Dead+1.0 Wind 60 deg - No

Ice

3.388 5.035 -2.907 -81.384 -140.658 -1.881

1.2 Dead+1.0 Wind 90 deg - No

Ice

4.518 5.888 0.000 -0.156 -163.950 -1.889

0.9 Dead+1.0 Wind 90 deg - No

Ice

3.388 5.888 0.000 -0.117 -163.983 -1.889

1.2 Dead+1.0 Wind 120 deg -

No Ice

4.518 5.291 3.055 84.211 -145.995 -1.391

83431 - Bald Mesa, UT

Page

Ehresmann Engineering, Inc.

4400 West 31st St.

Project

40' EEI SSTA SS

Date

13:27:07 01/18/22 Yankton, SD 57078

Phone: 605-665-7532

FAX: 605-665-9780

Client BLM Utah Radio

Designed by

J Schrempp

Load

Moment, Mx kip-ft

Overturning Moment, Mz

0.9 Dead+1.0 Wind 120 deg -

No Ice

3.388 5.291 3.055 84.250 -146.028 -1.391

1.2 Dead+1.0 Wind 150 deg -

No Ice

4.518 2.944 5.099 141.944 -81.908 -0.521

0.9 Dead+1.0 Wind 150 deg -

No Ice

3.388 2.944 5.099 141.983 -81.942 -0.521

1.2 Dead+1.0 Wind 180 deg -

No Ice

4.518 0.000 5.814 162.376 0.133 0.489

0.9 Dead+1.0 Wind 180 deg -

No Ice

3.388 0.000 5.814 162.415 0.100 0.489

1.2 Dead+1.0 Wind 210 deg -

No Ice

4.518 -2.944 5.099 141.944 82.175 1.368

0.9 Dead+1.0 Wind 210 deg -

No Ice

3.388 -2.944 5.099 141.983 82.142 1.368

1.2 Dead+1.0 Wind 240 deg -

No Ice

4.518 -5.291 3.055 84.211 146.261 1.881

0.9 Dead+1.0 Wind 240 deg -

No Ice

3.388 -5.291 3.055 84.250 146.228 1.881

1.2 Dead+1.0 Wind 270 deg -

No Ice

4.518 -5.888 0.000 -0.156 164.217 1.889

0.9 Dead+1.0 Wind 270 deg -

No Ice

3.388 -5.888 0.000 -0.117 164.183 1.889

1.2 Dead+1.0 Wind 300 deg -

No Ice

4.518 -5.035 -2.907 -81.423 140.891 1.391

0.9 Dead+1.0 Wind 300 deg -

No Ice

3.388 -5.035 -2.907 -81.384 140.858 1.391

1.2 Dead+1.0 Wind 330 deg -

No Ice

4.518 -2.944 -5.099 -142.257 82.175 0.521

0.9 Dead+1.0 Wind 330 deg -

No Ice

3.388 -2.944 -5.099 -142.217 82.142 0.521

1.2 Dead+1.0 Ice+1.0 Temp 5.585 0.000 0.000 -0.284 0.242 0.000

1.2 Dead+1.0 Wind 0 deg+1.0

Ice+1.0 Temp

5.585 0.000 -1.134 -31.320 0.242 -0.122

1.2 Dead+1.0 Wind 30 deg+1.0

Ice+1.0 Temp

5.585 0.551 -0.955 -26.591 -14.946 -0.250

1.2 Dead+1.0 Wind 60 deg+1.0

Ice+1.0 Temp

5.585 0.946 -0.546 -15.362 -25.874 -0.311

1.2 Dead+1.0 Wind 90 deg+1.0

Ice+1.0 Temp

5.585 1.103 0.000 -0.284 -30.134 -0.288

1.2 Dead+1.0 Wind 120

deg+1.0 Ice+1.0 Temp

5.585 0.982 0.567 15.234 -26.636 -0.189

1.2 Dead+1.0 Wind 150

deg+1.0 Ice+1.0 Temp

5.585 0.551 0.955 26.023 -14.946 -0.038

1.2 Dead+1.0 Wind 180

deg+1.0 Ice+1.0 Temp

5.585 0.000 1.092 29.873 0.242 0.122

1.2 Dead+1.0 Wind 210

deg+1.0 Ice+1.0 Temp

5.585 -0.551 0.955 26.023 15.431 0.250

1.2 Dead+1.0 Wind 240

deg+1.0 Ice+1.0 Temp

5.585 -0.982 0.567 15.234 27.121 0.311

1.2 Dead+1.0 Wind 270

deg+1.0 Ice+1.0 Temp

5.585 -1.103 0.000 -0.284 30.619 0.288

1.2 Dead+1.0 Wind 300

deg+1.0 Ice+1.0 Temp

5.585 -0.946 -0.546 -15.362 26.359 0.189

1.2 Dead+1.0 Wind 330

deg+1.0 Ice+1.0 Temp

5.585 -0.551 -0.955 -26.591 15.431 0.038

Dead+Wind 0 deg - Service 3.765 0.000 -2.073 -57.388 0.111 -0.166 Dead+Wind 30 deg - Service 3.765 0.999 -1.730 -48.350 -27.728 -0.464 Dead+Wind 60 deg - Service 3.765 1.709 -0.986 -27.707 -47.653 -0.638 Dead+Wind 90 deg - Service 3.765 1.998 0.000 -0.130 -55.568 -0.641 Dead+Wind 120 deg - Service 3.765 1.795 1.037 28.498 -49.475 -0.472 Dead+Wind 150 deg - Service 3.765 0.999 1.730 48.089 -27.728 -0.177

83431 - Bald Mesa, UT

Page

Ehresmann Engineering, Inc.

4400 West 31st St.

Project

40' EEI SSTA SS

Date

13:27:07 01/18/22 Yankton, SD 57078

Phone: 605-665-7532

FAX: 605-665-9780

Client BLM Utah Radio

Designed by

J Schrempp

Load

Moment, Mx kip-ft

Overturning Moment, Mz

Dead+Wind 180 deg - Service 3.765 0.000 1.973 55.023 0.111 0.166 Dead+Wind 210 deg - Service 3.765 -0.999 1.730 48.089 27.951 0.464 Dead+Wind 240 deg - Service 3.765 -1.795 1.037 28.498 49.697 0.638 Dead+Wind 270 deg - Service 3.765 -1.998 0.000 -0.130 55.790 0.641 Dead+Wind 300 deg - Service 3.765 -1.709 -0.986 -27.707 47.875 0.472 Dead+Wind 330 deg - Service 3.765 -0.999 -1.730 -48.350 27.951 0.177

Solution Summary

Sum of Applied Forces Sum of Reactions % Error PX

K

PY

K

PZ

K

PX

K

PY

K

PZ

K

1 0.000 -3.765 0.000 0.000 3.765 0.000 0.000% 2 0.000 -4.518 -6.109 0.000 4.518 6.109 0.000% 3 0.000 -3.388 -6.109 0.000 3.388 6.109 0.000% 4 2.944 -4.518 -5.099 -2.944 4.518 5.099 0.000% 5 2.944 -3.388 -5.099 -2.944 3.388 5.099 0.000% 6 5.035 -4.518 -2.907 -5.035 4.518 2.907 0.000% 7 5.035 -3.388 -2.907 -5.035 3.388 2.907 0.000% 8 5.888 -4.518 0.000 -5.888 4.518 0.000 0.000% 9 5.888 -3.388 0.000 -5.888 3.388 0.000 0.000% 10 5.291 -4.518 3.055 -5.291 4.518 -3.055 0.000% 11 5.291 -3.388 3.055 -5.291 3.388 -3.055 0.000% 12 2.944 -4.518 5.099 -2.944 4.518 -5.099 0.000% 13 2.944 -3.388 5.099 -2.944 3.388 -5.099 0.000% 14 0.000 -4.518 5.814 0.000 4.518 -5.814 0.000% 15 0.000 -3.388 5.814 0.000 3.388 -5.814 0.000% 16 -2.944 -4.518 5.099 2.944 4.518 -5.099 0.000% 17 -2.944 -3.388 5.099 2.944 3.388 -5.099 0.000% 18 -5.291 -4.518 3.055 5.291 4.518 -3.055 0.000% 19 -5.291 -3.388 3.055 5.291 3.388 -3.055 0.000% 20 -5.888 -4.518 0.000 5.888 4.518 0.000 0.000% 21 -5.888 -3.388 0.000 5.888 3.388 0.000 0.000% 22 -5.035 -4.518 -2.907 5.035 4.518 2.907 0.000% 23 -5.035 -3.388 -2.907 5.035 3.388 2.907 0.000% 24 -2.944 -4.518 -5.099 2.944 4.518 5.099 0.000% 25 -2.944 -3.388 -5.099 2.944 3.388 5.099 0.000% 26 0.000 -5.585 0.000 0.000 5.585 0.000 0.000% 27 0.000 -5.585 -1.134 0.000 5.585 1.134 0.000% 28 0.551 -5.585 -0.955 -0.551 5.585 0.955 0.000% 29 0.946 -5.585 -0.546 -0.946 5.585 0.546 0.000% 30 1.103 -5.585 0.000 -1.103 5.585 0.000 0.000% 31 0.982 -5.585 0.567 -0.982 5.585 -0.567 0.000% 32 0.551 -5.585 0.955 -0.551 5.585 -0.955 0.000% 33 0.000 -5.585 1.092 0.000 5.585 -1.092 0.000% 34 -0.551 -5.585 0.955 0.551 5.585 -0.955 0.000% 35 -0.982 -5.585 0.567 0.982 5.585 -0.567 0.000% 36 -1.103 -5.585 0.000 1.103 5.585 0.000 0.000% 37 -0.946 -5.585 -0.546 0.946 5.585 0.546 0.000% 38 -0.551 -5.585 -0.955 0.551 5.585 0.955 0.000% 39 0.000 -3.765 -2.073 0.000 3.765 2.073 0.000% 40 0.999 -3.765 -1.730 -0.999 3.765 1.730 0.000% 41 1.709 -3.765 -0.986 -1.709 3.765 0.986 0.000% 42 1.998 -3.765 0.000 -1.998 3.765 0.000 0.000% 43 1.795 -3.765 1.037 -1.795 3.765 -1.037 0.000% 44 0.999 -3.765 1.730 -0.999 3.765 -1.730 0.000% 45 0.000 -3.765 1.973 0.000 3.765 -1.973 0.000% 46 -0.999 -3.765 1.730 0.999 3.765 -1.730 0.000%

83431 - Bald Mesa, UT

Page

Ehresmann Engineering, Inc.

4400 West 31st St.

Project

40' EEI SSTA SS

Date

13:27:07 01/18/22 Yankton, SD 57078

Phone: 605-665-7532

FAX: 605-665-9780

Client BLM Utah Radio

Sum of Applied Forces Sum of Reactions % Error PX

K

PY

K

PZ

K

PX

K

PY

K

PZ

K

47 -1.795 -3.765 1.037 1.795 3.765 -1.037 0.000% 48 -1.998 -3.765 0.000 1.998 3.765 0.000 0.000% 49 -1.709 -3.765 -0.986 1.709 3.765 0.986 0.000% 50 -0.999 -3.765 -1.730 0.999 3.765 1.730 0.000%

Maximum Tower Deflections - Service Wind

No.

Horz.

Deflection in

Gov.

Load

Comb.

Tilt

Twist

T1 40 - 20 0.568 39 0.0892 0.0143 T2 20 - 0 0.201 39 0.0739 0.0090

Critical Deflections and Radius of Curvature - Service Wind

Appurtenance Gov.

Load

Deflection

Tilt

Twist

Radius of Curvature ft

40.000 5' Lightning Rod 39 0.568 0.0892 0.0143 76602

30.000 (2) AF-5G34-S45 39 0.369 0.0871 0.0119 38301

Maximum Tower Deflections - Design Wind

Horz.

Deflection in

Gov.

Load

Comb.

Tilt

Twist

T1 40 - 20 1.672 2 0.2623 0.0421 T2 20 - 0 0.591 2 0.2174 0.0264

Critical Deflections and Radius of Curvature - Design Wind

Appurtenance Gov.

Load

Deflection

Tilt

Twist

Radius of Curvature ft

40.000 5' Lightning Rod 2 1.672 0.2623 0.0421 26082

30.000 (2) AF-5G34-S45 2 1.085 0.2560 0.0352 13041

Bolt Design Data

83431 - Bald Mesa, UT

Page

Ehresmann Engineering, Inc.

4400 West 31st St.

Project

40' EEI SSTA SS

Date

13:27:07 01/18/22 Yankton, SD 57078

Phone: 605-665-7532

FAX: 605-665-9780

Client BLM Utah Radio

Designed by

J Schrempp

Section

Component Type

Bolt

Bolt Size

Of

Bolts

Maximum Load per Bolt K

Allowable Load per Bolt K

Ratio Load

Allowable

Allowable Ratio

Criteria

T1 40 Diagonal A325N 0.625 1 2.305 7.875 0.293

1 Member Block Shear

Top Girt A325N 0.625 1 0.426 7.875 0.054

1 Member Block Shear

T2 20 Leg A325N 1.000 3 5.095 54.517 0.093

1 Bolt Tension

Diagonal A325N 0.625 1 2.931 7.875 0.372

1 Member Block Shear

Compression Checks

Leg Design Data (Compression)

Lu

Kl/r

A in2

Pu

Pn

Ratio Pu

Pn T1 40 - 20 HSS2.875x.203 20.000 5.000 63.0

K=1.00

1.595 -12.359 53.678 0.230 1

T2 20 - 0 HSS2.875x.203 20.000 5.000 63.0

1.595 -36.207 53.678 0.675 1

1 P u / Pn controls

Diagonal Design Data (Compression)

Pu

Pn T1 40 - 20 L1 3/4x1 3/4x3/16 7.108 3.240 114.9

K=1.02

0.621 -2.315 13.078 0.177 1

T2 20 - 0 L1 3/4x1 3/4x3/16 7.108 3.240 114.9

K=1.02

0.621 -3.063 13.078 0.234 1

Top Girt Design Data (Compression)

Pu

Pn T1 40 - 20 L1 3/4x1 3/4x3/16 5.052 4.521 158.0

0.621 -0.426 7.125 0.060 1

83431 - Bald Mesa, UT

Page

Ehresmann Engineering, Inc.

4400 West 31st St.

Project

40' EEI SSTA SS

Date

13:27:07 01/18/22 Yankton, SD 57078

Phone: 605-665-7532

FAX: 605-665-9780

Client BLM Utah Radio

Designed by

J Schrempp

Section

Tension Checks

Leg Design Data (Tension)

Pu

T1 40 - 20 HSS2.875x.203 20.000 5.000 63.0 1.595 10.122 71.768 0.141 1

T2 20 - 0 HSS2.875x.203 20.000 5.000 63.0 1.595 32.459 71.768 0.452 1

Diagonal Design Data (Tension)

Pu

T1 40 - 20 L1 3/4x1 3/4x3/16 7.108 3.240 75.7 0.360 2.305 15.675 0.147 1

T2 20 - 0 L1 3/4x1 3/4x3/16 7.108 3.240 75.7 0.360 2.931 15.675 0.187 1

Top Girt Design Data (Tension)

Pu

T1 40 - 20 L1 3/4x1 3/4x3/16 5.052 4.521 107.6 0.360 0.426 15.675 0.027 1

83431 - Bald Mesa, UT

Page

Ehresmann Engineering, Inc.

4400 West 31st St.

Project

40' EEI SSTA SS

Date

13:27:07 01/18/22 Yankton, SD 57078

Phone: 605-665-7532

FAX: 605-665-9780

Client BLM Utah Radio

Designed by

Section Capacity Table

Elevation ft

Component Type

Size Critical Element

P K øPallow

K

Capacity Pass Fail

T1 40 - 20 Leg HSS2.875x.203 3 -12.359 53.678 23.0 Pass T2 20 - 0 Leg HSS2.875x.203 33 -36.207 53.678 67.5 Pass T1 40 - 20 Diagonal L1 3/4x1 3/4x3/16 11 -2.315 13.078 17.7 Pass T2 20 - 0 Diagonal L1 3/4x1 3/4x3/16 39 -3.063 13.078 23.4 Pass T1 40 - 20 Top Girt L1 3/4x1 3/4x3/16 4 -0.426 7.125 6.0 Pass

Summary Leg (T2) 67.5 Pass Diagonal

(T2)

23.4 Pass

Top Girt (T1)

6.0 Pass

Bolt Checks 37.2 Pass RATING = 67.5 Pass

Program Version 8.1.1.0 - 6/3/2021 File:Z:/EEI JOBS/8343 - Bald Mesa, UT/83431 - Bald Mesa, UT.eri