GENERAL REPAIR REPORT - SV.pdf

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Texas Firm No. F-11847

STRUCTURAL AND CONDITION ASSESSMENT REPORT

FOR

[SIERRA VIEJA] TX8584

80’ GUYED TOWER

VALENTINE, JEFF DAVIS COUNTY, TEXAS

TEP # 63591_37920

Revision 1

January 8, 2016

Revision # Date Issued Description

0 November 19, 2015 Original issued document

1 January 8, 2016 Revised per client request

Respectfully Submitted By:

Prepared For:

US Army Corps Of Engineers ®

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Date: January 8, 2016

Lesley R. Schwalje, P.E. Tower Engineering Professionals

HNTB - Halff JV 326 Tryon Road

5910 W. Plano Pkwy, Suite 200 Raleigh, NC 27603

Plano, TX 75093 (919) 661-6351

(214) 557-1745 mgardner@tepgroup.net

Subject: Executive Summary - Revision 1

Tower Designation: Site Name: Sierra Vieja

TRIRIGA BU Number: TX8584

Engineering Firm Designation: TEP Project Number: 63591_37920

Site Data: 12.5± Miles West of Valentine, Jeff Davis County, TX 79854

Lat., Long.: 30.579800, -104.706600 (N 30° 34' 47.28'', W 104° 42' 23.76'')

80 Foot – Guyed Tower

Tower Engineering Professionals (TEP) is pleased to provide this executive summary for the Phase I Scope of Work, which included a Maintenance and Condition Assessment, Capital Expenditure Table, Steel and Appurtenance

Mapping, and Structural Analysis for the above referenced site.

Maintenance and Condition Assessment

Overall Tower Condition (Excellent/Good/Average/Fair/Poor): Average*

Tower Type: 80-ft guyed tower

Tower Age: Approximately 20-30 years**

Number of Guy Wires: 2 Levels (39.7’, 79.7’)

Tower Access Road Condition: Good, no obstacles or issues encountered

A periodic inspection for the above referenced site was performed by Kyle Underhill, E.I. and Jeremiah Fox of TEP during the October 1st, 2015 site visit. The inspection was in accordance with the ANSI/TIA-222-G-2005, Annex J:

Maintenance and Condition Assessment (Normative). TEP observed the following checklist items requiring some measure of possible or required corrective action: 1) Structure Condition, 2) Finish, 3) Grounding, 4) Antennas and

Lines, 5) Guys, 6) Concrete Foundations, and 7)Tower Alignment. Refer to the Maintenance and Condition

Assessment Report for specific details.

*TEP defines the tower conditions as follows:

Excellent - The tower has sufficient capacity to carry the existing loads. No modifications are required at this time. In addition, the tower has no maintenance issues of note and doesn’t require maintenance repairs at this time.

Good - The tower has sufficient capacity to carry the existing loads. No modifications are required at this time. However, the tower has some maintenance issues of note that require attention.

Average - The tower does not have sufficient capacity to carry the existing loads. Modifications will be required to bring the tower into compliance with the

ANSI/TIA-222-G standard for the existing loading. In addition, the tower may have minor maintenance issues of note that require attention.

Fair - The tower does not have sufficient capacity to carry the existing loads. Modifications will be required to bring the tower into compliance with the ANSI/TIA-

222-G standard for the existing loading. In addition, the tower has maintenance issues of note that require attention. Based on the itemized estimate in our Capital

Expenditure Table, modifying the existing tower may be the most cost effective solution.

Poor - The tower does not have sufficient capacity to carry the existing loads. Modifications will be required to bring the tower into compliance with the ANSI/TIA-

222-G standard for the existing loading. In addition, the tower has maintenance issues of note that require attention. Based on the itemized estimate in our Capital

Expenditure Table and/or the condition of the tower, a full tower replacement may be the best solution.

**Tower Age was estimated based on tower identification tags, tower manufacturer information, tower research, type and condition of tower components, and/or historical site images

Texas Firm No. F-11847

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TEP Project Number 63591_37920, Revision 1 January 8, 2016

Sierra Vieja (TX8584)

Tower Engineering Professionals 326 Tryon Road, Raleigh, NC 27603 (o) 919-661-6351 (f) 919-661-6350 www.tepgroup.net

Condition Assessment of Non-Tower Assets

During the site visit, TEP conducted a visual inspection of all Non-Tower Owned Assets. TEP did not find any non-tower assets that require urgent corrective repairs. However, TEP recommends regular inspection and maintenance by licensed professionals based on manufacturer specifications. Refer to Section L of the Maintenance and Condition

Assessment Report for any applicable additional information.

Asset Type Coordinates Condition Notes

Estimated

Remaining

Life

CBP Shelter/

Roof Concrete

30.579836, -104.706600 Good

Structure appears to be in good condition, no major issues visible 10+ years

Shelter

Access

(2) Single

Doors

30.579836, -104.706600 Good

(2) doors located on east side of shelter, door and door frame are in good condition 10+ years

Power

Supply Generator

30.579836, -104.706600 Good

Kohler manufacturer tag, inside shelter, appears to be in good condition, no major issues visible

10+ years

Power

Supply Battery

30.579836, -104.706600 Good

On the floor of the shelter, there is a battery wired to cellular equipment 5-10 years

Cellular

Receivers

30.579836, -104.706600 Good

CBP Shelter houses various units associated with communication equipment 10+ years

Exhaust Fan Through

Wall

30.579836, -104.706600 Good

(2) fans appears to be in good working condition 5-10 years

Heating Unit Wall

Mounted

30.579836, -104.706600 Good

HVAC unit mounted to exterior of shelter, appear to be in good condition 5-10 years

Fuel Tank Metal 30.579850, -104.706644 Good

Trinity Industries manufacturer tag, tank appears to be in good working condition 10+ years

Capital Expenditure Table

A cost estimate of $50,350 was provided to cover repairs as recommended in the Maintenance and Condition

Assessment Report and the Structural Analysis Report. The recommended repair schedule ranges from 6 months to 5 years. Note that this estimate does not include any foundation reinforcements that may be required. TEP cannot say with certainty that a replacement would be more cost effective than modifying the existing tower without completing a Structural Modification Design Analysis. For itemized repairs, refer to the Capital Expenditure Table for details. TEP estimated a ROM cost for full tower replacement would range from approximately $150,000 for a 100-ft guyed tower to $225,000 for a 300-ft guyed tower. These estimates do not include pricing for site specific costs related to zoning, permitting, environmental studies, etc.

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Steel and Appurtenance Mapping

The original design criteria were unavailable for review. A Steel and Appurtenance Mapping was performed in order to obtain the necessary tower and appurtenance loading information needed to conduct the Structural Analysis for this site. The antennas recorded during our Steel and Appurtenance Mapping are depicted in the table below. TEP denoted the owner of the equipment under the “Owner/Tenant” column based on information available on site.

Refer to the Steel and Appurtenance Mapping Report for additional detail.

Elevation

(ft) Qty Antenna Model

Mount

Type

Owner/

Tenant

78.7 1 3ӯ x 3-ft 2-Pole Antenna Side Arm CBP

78.6 2 22-ft x 4-Element Dipole Side Arm CBP

77.6 1 Scala CL-400A Side Arm CBP

77.1 1 Scala CL-400A Side Arm CBP

72.1 1 6-Element Yagi Direct CBP

69.3 1 6-Element Yagi Direct CBP

64.5 1 Radiation Systems P-17A96F Dish Mount CBP

52.8 1 22-ft x 4-Element Dipole Side Arm CBP

35.0 1 6-Element Yagi Direct CBP

25.5 1 Radiation Systems P-17A72GP Dish Mount CBP

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Structural Analysis

LC1: Existing Equipment Insufficient Capacity Note: See Table 1 for the existing loading

Thank you for the opportunity to provide this service for you. If you have any questions or comments, please contact our office.

Component % Capacity

Leg (T2) 47.5%

Diagonal (T2) 147.5%

Horizontal (T1) 31.6%

Top Girt (T3) 16.3%

Bottom Girt (T3) 28.6%

Guy A (T1) 66.7%

Guy B (T1) 68.5%

Guy C (T1) 71.4%

Top Guy Pull-Off (T4) 39.7%

Torque Arm Top (T1) 31.8%

Torque Arm Bottom (T1) 43.3%

Bolt Checks 41.5%

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The Structural Analysis report outlines overstresses in the diagonals at the 40’ to 80’ elevations. TEP believes that the majority of the overstresses can be attributed to the more stringent loading and analysis criteria as required by the latest ANSI/TIA-222-G-2-2009 Standard, as compared to previous versions of the TIA Standard for which the tower was originally designed. Based on our analysis we have determined the tower stress level for each controlling component, under the following load case, to be:

MASTER TABLE OF CONTENTS

���� MAINTENANCE AND CONDITION ASSESSMENT

���� CAPITAL EXPENDITURE TABLE

���� ANNEX A: STEEL AND APPURTENANCE MAPPING

���� ANNEX B: STRUCTURAL ANALYSIS

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MAINTENANCE AND CONDITION ASSESSMENT

PROPERTY OF THE UNITED STATES GOVERNMENT- FOR OFFICIAL USE ONLY- DO NOT REMOVE THIS NOTICE- PROPERLY DESTROY DOCUMENTS WHEN NO LONGER NEEDED

HNTB-Halff JV 326 Tryon Road

5910 W. Plano Pkwy., Suite 200 Raleigh, NC 27603

Plano, TX 75093 (919) 661-6351

(214) 557-1745 mgardner@tepgroup.net

Subject: Maintenance and Condition Assessment Report - Revision 1

Tower Designation: Site Name: Sierra Vieja

TRIRIGA BU Number: TX8584

Engineering Firm Designation: TEP Project Number: 63591_37920

Site Data: 12.5± Miles West of Valentine, Jeff Davis County, TX 79854

Lat., Long.: 30.579800, -104.706600 (N 30° 34' 47.28'', W 104° 42' 23.76'')

80 Foot – Guyed Tower

Dear Ms. Schwalje, Tower Engineering Professionals (TEP) completed a periodic inspection for the above referenced site. The onsite investigation was performed by Kyle Underhill, E.I. and Jeremiah Fox of TEP during the October 1st, 2015 site visit. The inspection was in accordance with the ANSI/TIA-222-G-2005, Annex J: Maintenance and Condition Assessment

(Normative), including all addendums (addendums TIA-222-G-1 2007 and TIA 222-G-2 2009); the checklist can be found on pages 3 thru 8 of this report.

Observations and recommendations are listed herein. The inspection included observation of tower components and

CBP owned assets. For the purpose of this inspection, the tower legs were named by letter according to the magnetic azimuth defined by a line from the center of tower to the leg. “A” leg is the leg closest to magnetic north, followed clockwise by “B” and “C.” Guy wires were numbered from the ground up. Guy wires 1 thru 2 are at the 39.7-ft and

79.7-ft elevations respectively.

Thank you for the opportunity to provide this service for you. If you have any questions or comments, please contact our office.

Texas Firm #: F-11847

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Guyed Tower Maintenance and Condition Assessment Report January 8, 2016

TEP Project Number 63591_37920, Revision 1 TX8584 - Sierra Vieja

TABLE OF CONTENTS

1) ANSI/TIA-222-G-MAINTENANCE AND CONDITION ASSESSMENT

2) SUMMARY

3) APPENDIX A

Guy Tensions

4) APPENDIX B

Tower Plumb and Twist Measurements

5) APPENDIX C

Typical Guy Anchor Configuration

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ANSI/TIA-222-G MAINTENANCE AND CONDITION ASSESSMENT

A. STRUCTURE CONDITION

A.1. Damaged members (legs and bracing)

Okay Possible Improvement Needs Repair Not Applicable

Notes:

A.2. Loose members

Okay Possible Improvement Needs Repair Not Applicable

Notes:

A.3. Missing members

Okay Possible Improvement Needs Repair Not Applicable

Notes:

A.4. Climbing facilities, platforms, catwalks – all secure

Okay Possible Improvement Needs Repair Not Applicable

Notes: Corrosion was noted on safety cable restraint bolts. See summary for details.

A.5. Loose and/or missing bolts and/or nut locking devices

Okay Possible Improvement Needs Repair Not Applicable

Notes:

A.6. Visible cracks in welded connections

Notes:

B. FINISH

B.1. Paint and/or galvanizing condition

Notes: Deteriorated galvanizing coating observed. See summary for details.

B.2. Rust and/or corrosion condition including mounts and accessories

Okay Possible Improvement Needs Repair Not Applicable

Notes: Surface corrosion was observed throughout the entire tower. See summary for details.

B.3. FAA or ICAO color marking conditions

Okay Possible Improvement Needs Repair Not Applicable

Notes:

B.4. Water collection in members (to be remedied, e.g., unplug drain holes, etc.)

Okay Possible Improvement Needs Repair Not Applicable

Notes: All tower members are solid round or angle.

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C. LIGHTING

C.1. Conduit, junction boxes, and fasteners (weather tight and secure)

Notes: No lighting equipment installed on tower.

C.2. Drains and vents openings (unobstructed)

Okay Possible Improvement Needs Repair Not Applicable

Notes:

C.3. Wiring Condition

Okay Possible Improvement Needs Repair Not Applicable

Notes:

C.4. Light lenses

Okay Possible Improvement Needs Repair Not Applicable

Notes:

C.5. Bulb condition

Okay Possible Improvement Needs Repair Not Applicable

Notes:

C.6.a. Controllers functioning (Flasher)

Okay Possible Improvement Needs Repair Not Applicable

Notes:

C.6.b. Controllers functioning (Photo control)

Okay Possible Improvement Needs Repair Not Applicable

Notes:

C.6.c. Controllers functioning (Alarms)

Notes: Could not verify.

D. GROUNDING

D.1. Connections

Notes:

D.2. Corrosion

Okay Possible Improvement Needs Repair Not Applicable

Notes:

D.3. Lightning protection (secured to structure)

Okay Possible Improvement Needs Repair Not Applicable

Notes: No lightning rod attached to top of tower. Structure is grounded so addition of homerun grounding wire is up to tower owner’s discretion.

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E. ANTENNAS AND LINES

E.1. Antenna condition

Notes: Damaged/disconnected antenna located at top of tower. See summary for details.

E.2. Mount and/or ice shield condition (bent, loose, and/or missing members)

Okay Possible Improvement Needs Repair Not Applicable

Notes: Loose bolt, bent threaded rod, and surface corrosion located on antenna mount and connections. See summary for details.

E.3. Feed line condition (flanges, seals, dents, jacket damage, grounding, etc.)

Okay Possible Improvement Needs Repair Not Applicable

Notes: Feed line weatherproofing deteriorated and disconnected from antenna. See summary for details.

E.4. Hanger condition (snap-ins, bolt on, kellum grips, etc.)

Okay Possible Improvement Needs Repair Not Applicable

Notes:

E.5. Secured to structure

F. OTHER APPURTENANCES (WALKWAYS, PLATFORMS, SENSORS, FLOODLIGHTS, ETC.)

F.1. Condition

Notes:

F.2. Secured to structure

G. INSULATOR CONDITION

G.1. Cracking and chipping

Notes:

G.2. Cleanliness of insulators

Okay Possible Improvement Needs Repair Not Applicable

Notes:

G.3. Spark gaps set properly

Okay Possible Improvement Needs Repair Not Applicable

Notes:

G.4. Isolation transformer condition

Okay Possible Improvement Needs Repair Not Applicable

Notes:

G.5. Bolts and connection secure

Okay Possible Improvement Needs Repair Not Applicable

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H. GUYS

H.1. Strand condition (corrosion, breaks, nicks, kinks, etc.)

Notes:

H.2.a. Guy Hardware Conditions (Turnbuckles or equivalent (secure and safety properly applied)

Okay Possible Improvement Needs Repair Not Applicable

Notes: Improper installation of safety wires observed. See summary for details.

H.2.b. Guy Hardware Conditions (Cable thimbles properly in place (if required))

Okay Possible Improvement Needs Repair Not Applicable

Notes:

H.2.c. Guy Hardware Conditions (Service sleeves properly in place (if required))

Okay Possible Improvement Needs Repair Not Applicable

Notes:

H.2.d.i. Guy Hardware Conditions (Cable connectors (end fittings) (Cable clamps applied properly and bolts tight)

Okay Possible Improvement Needs Repair Not Applicable

Notes:

H.2.d.ii. Guy Hardware Conditions (Cable connectors (end fittings) (Wire serving properly applied))

Okay Possible Improvement Needs Repair Not Applicable

Notes: Refer to item H.2.a.

H.2.d.iii. Guy Hardware Conditions (Cable connectors (end fittings) (No signs of slippage or damaged strands))

Okay Possible Improvement Needs Repair Not Applicable

Notes:

H.2.d.iv. Guy Hardware Conditions (Cable connectors (Preformed wraps – properly applied, fully wrapped, & sleeve in place))

Okay Possible Improvement Needs Repair Not Applicable

Notes:

H.2.d.v. Guy Hardware Conditions (Cable connectors (end fittings) (Poured sockets secure and showing no separation))

Okay Possible Improvement Needs Repair Not Applicable

Notes:

H.2.d.vi. Guy Hardware Conditions (Cable connectors (Shackles, bolts, pins, and cotter pins secure and in good condition))

Okay Possible Improvement Needs Repair Not Applicable

Notes: Guy wire connection shackles have no nut locking devices.

H.3. Guy tensions

Okay Possible Improvement Needs Repair Not Applicable

Notes: Guy tensions not within the ANSI/TIA-222-G-2005 recommended limits. See summary for details.

H.4. Measure guy tensions

Okay Possible Improvement Needs Repair Not Applicable

Notes: Tensions measured using a Dillon tension meter.

H.5. Record temperature, wind speed and wind direction

Notes: Temperature was 87 degrees Fahrenheit at the time of measurement.

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I. CONCRETE FOUNDATIONS

I.1.a. Ground condition (Settlement, movement or earth cracks)

Notes:

I.1.b. Ground condition (Erosion)

Okay Possible Improvement Needs Repair Not Applicable

Notes:

I.1.c. Ground condition (Site condition (standing water, drainage, trees, etc.))

Okay Possible Improvement Needs Repair Not Applicable

Notes: Excess vegetation observed at compound, equipment shelter, and anchor locations. See summary for details.

I.2.a. Anchorage condition (Nuts and/or nut locking device (tightened))

Okay Possible Improvement Needs Repair Not Applicable

Notes:

I.2.b. Anchorage condition (Grout condition)

Okay Possible Improvement Needs Repair Not Applicable

Notes:

I.2.c. Anchorage condition (Anchorages and/or anchor rod condition)

Okay Possible Improvement Needs Repair Not Applicable

Notes:

I.3.a. Concrete condition (Cracking, spalling, or splitting)

Okay Possible Improvement Needs Repair Not Applicable

Notes:

I.3.b. Concrete condition (Chipped or broken concrete)

Okay Possible Improvement Needs Repair Not Applicable

Notes:

I.3.c. Concrete condition (Honeycombing)

Okay Possible Improvement Needs Repair Not Applicable

Notes:

I.3.d. Concrete condition (Low spots to collect moisture)

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J. GUYED MAST ANCHORS

J.1. Settlement, movement or earth cracks

Notes:

J.2. Backfill heaped over concrete for water shedding

Okay Possible Improvement Needs Repair Not Applicable

Notes:

J.3. Anchor rod condition below earth (Maintain required structural capacity of anchor during exploration.)

Okay Possible Improvement Needs Repair Not Applicable

Notes:

J.4. Corrosion control measures (galvanizing, coating, concrete encasement, cathodic protection systems, etc.)

Okay Possible Improvement Needs Repair Not Applicable

Notes:

J.5. Anchor heads clear of earth

K. TOWER ALIGNMENT

K.1. Tower Plumb and Twist

Notes: Tower twist and plumb not within ANSI/TIA-222-G-2005 recommended limits. See Appendix B for details.

L. NON-TIA RELATED ITEMS

L.1. Equipment Shelter

Notes:

L.2. Security

Okay Possible Improvement Needs Repair Not Applicable

Notes: Perimeter fencing was observed missing around compound and guy anchor locations. See summary for details.

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SUMMARY

Photograph Observations and Recommendations

A.4. Climbing Facilities, platforms, catwalks - all secure

Observation:

Surface corrosion was noted on safety cable restraint throughout the tower height.

Recommendation:

Replace any safety wire restraints that have experienced corrosion.

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B.1. Paint and/or galvanizing condition

Deteriorated galvanizing condition was observed throughout the entire tower height.

Thoroughly clean areas of corrosion and coat with at least two coats of ZRC cold galvanizing compound or approved equivalent. During or before cleaning, if any hardware exhibits section loss, pitting, or holes, they should be replaced.

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B.2. Rust and/or corrosion condition including mounts and accessories

Surface corrosion was observed throughout the tower height including mounts located at:

• 41.5-ft (A-Leg)

• 61.5-ft (A-Leg)

• 78.6-ft (C-Leg)

Thoroughly clean areas of corrosion and coat with at least two coats of ZRC cold galvanizing compound or approved equivalent. During or before cleaning, if any hardware exhibits section loss, pitting, or holes, they should be replaced.

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E.1. Antenna Condition

Damaged antenna observed at the following locations on the tower:

• 72.1-ft : 5-ft Yagi Antenna (A-Leg)

• 78.6-ft: Dipole Antenna (C-Leg)

Notify the carrier about the condition and possible repair of the damaged antenna.

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E.2. Mount and/or ice shield condition (bent, loose, and/or missing members)

Loose bolt located on antenna mount at the following location:

• 25-ft : 8-ft Grid Dish (C-Leg)

Bent threaded rod on antenna mount at the following location:

• 61.5-ft : Dipole Antenna (C-Leg)

Ensure that a proper nut locking device is installed and tighten nut per the AISC “turn of the nut method”.

Remove threaded rods and replace with new threaded rods equivalent in size, length, and strength. Ensure that a proper nut locking device is installed and tighten nut per the AISC “turn of the nut method”.

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E.3. Feed line condition (flanges, seals, dents, jacket damage, grounding, etc.)

Feed line weatherproofing deteriorated and disconnected from antenna at the following location on the tower:

• 25-ft : 8-ft Grid Dish (C-Leg)

Re-seal the feed-line jumper connections and jumper to antenna connections to ensure the lines are weather tight. If feed line has been cut, ensure there are no future plans for the cut feed line then remove it from the tower.

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H.2.a Guy Hardware Conditions (Safety Properly Applied)

Improper installation of guy wire safety cable observed at the following locations

• Anchor A, all guy levels

• Anchor B, all guy levels

• Anchor C, all guy levels

Reinstall turnbuckle safety cables so they are looping through the thimbles with 2 Crosby clamps. See Appendix C for proper installation of turnbuckle safety loops.

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H.2.d.vi. Guy Hardware Conditions (Cable connectors

(Shackles, bolts, pins, and cotter pins secure and in good condition))

Guy wire connection shackles have no nut locking devices.

Install mousing wire to prevent shackle pins from loosening.

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I.1.c. Ground condition (site condition)

Excess vegetation observed at compound, equipment shelter, and anchor locations.

Compound perimeter and anchor locations should be cleared of vegetative growth and maintained to prevent future growth.

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L.1. Security

Perimeter fencing observed missing.

Tower owner determines if fencing should be installed around the compound and guy anchor locations.

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APPENDIX A: GUY TENSIONS

Table A-1 (Assumed Initial Tension is 10% of Breaking Strength)

Guy

Path

Guy #

Guy Size

(diameter in inches)

Measured

-10% of Initial

Tension at 60°°°°F

(lbs)

+10% of Initial

Tension at 60°°°°F

(lbs)

Measured tension converted to

60°°°°F (lbs)

Results

A

1 at 39.7’ 9/16 3150 3850 4242 HIGH

2a at 79.7’ 7/16 1872 2288 1972 OK

2b at 79.7’ 7/16 1872 2288 1952 OK

B

1 at 39.7’ 9/16 3150 3850 4562 HIGH

2a at 79.7’ 7/16 1872 2288 1612 LOW 2b at 79.7’ 7/16 1872 2288 2352 HIGH

C

1 at 39.7’ 9/16 3150 3850 3919 HIGH

2a at 79.7’ 7/16 1872 2288 2090 OK

2b at 79.7’ 7/16 1872 2288 1970 OK

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APPENDIX B: TOWER PLUMB AND TWIST MEASUREMENTS

Table B-1: Tower Twist Measurements

Reference

(above conc.)

Twist with

Respect

To Base (°°°°)

Allowable Twist with Respect

To Base (°°°°)

Relative Twist

Between Reference

Elevations (°°°°)

Allowable Twist

Between Reference

Elevations (°°°°)

T o w e r T w is t M e a su re m e n ts

80-ft 4.22 ± 4.00

0.00 ± 1.00

60-ft 4.22 ± 3.00

0.00 ± 1.00

40-ft 4.22 ± 2.00

0.00 ± 1.00

20-ft 4.22 ± 1.00

4.22 ± 1.00

0-ft 0.00 ± 0.00

Table B-2: Lateral Deflection Measurements

Reference

(above conc.)

Resultant

Deflection (in)

Allowable

Resultant

Deflection (in) per TIA

Resultant Deflection

Between Reference

Elevations (in)

Allowable Deflection

Between Reference

Elevations (in) per TIA

T o w e r D e fl e ct io n

M e a su re m e n ts

80-ft 0.00 ± 2.40

0.00 ± 0.60

60-ft 0.00 ± 1.80

0.00 ± 0.60

40-ft 0.00 ± 1.20

0.00 ± 0.60

20-ft 0.00 ± 0.60

0.00 ± 0.60

0-ft 0.00 ± 0.00

PROPERTY OF THE UNITED STATES GOVERNMENT- FOR OFFICIAL USE ONLY- DO NOT REMOVE THIS NOTICE- PROPERLY DESTROY DOCUMENTS WHEN NO LONGER NEEDED

APPENDIX C: TYPICAL GUY ANCHOR CONFIGURATION

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CAPITAL EXPENDITURE TABLE

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ANSI/TIA-222-G: CAPITAL EXPENDITURE TABLE

Job Name: Sierra Vieja

TEP Number: 63591_37920, Revision 1

A. STRUCTURAL CONDITION

Issue: Repair/Modification: Repair Schedule:

A.1. Damaged members (legs and bracing)

a. The following members were failing under existing loading conditions in the structural analysis:

- Diagonals from 40-ft to 80-ft

i. Complete repairs as specified in Structural

Design Drawings

0-1 year $20,500

Sub Total: $20,500

A.4. Climbing facilities, platforms, catwalks – all secure

a. Corrosion was noted on safety cable restraint throughout the tower height.

i. Replace safety cable restraint. 0-1 year $750

Sub Total: $750

Total: $21,250

B. FINISH

Issue: Repair/Modification: Repair Schedule:

B.1. Paint and/or galvanizing condition

a. Deteriorated galvanizing condition throughout entire tower height.

i. Regalvanize the tower. 0-5 years $9,000

Sub Total: $9,000

B.2. Rust and/or corrosion condition including mounts and accessories

a. Surface corrosion throughout entire tower height. Refer to item B.1. 0-6 months $0

Sub Total: $0

Total: $9,000

C. LIGHTING

NO DEFICIENCIES WERE IDENTIFIED

D. GROUNDING

Issue: Repair/Modification: Repair Schedule:

D.3. Lightning protection (secured to structure)

a. No lightning rod attached to top of tower. Structure is grounded so addition of homerun grounding wire is up to tower owner’s discretion.

i. Install lightning rod system. 0-5 years $1,500

Sub Total: $1,500

Total: $1,500

*Items that don't require attention were omitted from this list of itemized modification costs. For a full itemized list of everything that was assessed during our site visit please reference the Maintenance and Condition Assessment.

Fee:

Modification Fee:

Fee:

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E. ANTENNAS AND LINES

Issue: Repair/Modification:

E.1. Antenna condition

Damaged antenna observed at the following locations on the tower:

• 72.1-ft : 5-ft Yagi Antenna (A-Leg)

• 78.6-ft: Dipole Antenna (C-Leg)

i. Repair/replace antennas $0

Sub Total: $0

E.2. Mount and/or ice shield condition (bent, loose, and/or missing members)

Loose bolt located on antenna mount at the following location:

• 25-ft : 8-ft Grid Dish (C-Leg)

Bent threaded rod on antenna mount at the following location:

• 61.5-ft : Dipole Antenna (C-Leg)

i. Tighten the nut per the AISC "turn of the nut method". ii. Replace threaded rods

$750

Sub Total: $750

E.3. Feed line condition (flanges, seals, dents, jacket damage, grounding, etc.)

Feed line weatherproofing deteriorated and disconnected from antenna at the following location on the tower:

• 25-ft : 8-ft Grid Dish (C-Leg)

i. Repair or remove feed line. $750

Sub Total: $750

Total: $1,500

F. OTHER APPURTENANCES (WALKWAYS, PLATFORMS, SENSORS, FLOODLIGHTS, ETC.)

NO DEFICIENCIES WERE IDENTIFIED

G. INSULATOR CONDITION

NO DEFICIENCIES WERE IDENTIFIED

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H. GUYS

Issue: Repair/Modification: Repair Schedule:

H.2.a. Guy Hardware Conditions (Turnbuckles or equivalent

(secure and safety properly applied)

a. Turnbuckle safety cables are attached with only (1)

Crosby clamp and installed incorrectly.

i. Install/replace guy wire hardware as required.

0-6 months $650

Sub Total: $650

H.2.d.ii. Guy Hardware Conditions (Cable connectors (end fittings) (Wire serving properly applied))

a. Wire servings not currently installed on guy wires. Refer to item H.2.a. 0-1 year $650

Sub Total: $650

H.2.d.vi. Guy Hardware Conditions (Cable connectors

(Shackles, bolts, pins, and cotter pins secure and in good condition))

a. Surface corrosion and pitting on cotter pin of inside anchor C, guy level 2.

b. No nut locking devices installed on turnbuckle bolts.

i. Replace guy wire hardware as required.

Ii. Install nut locking devices.

0-6 months $650

Sub Total: $650

H.3. Guy tensions

a. Guy wire tensions were not within acceptable limits per

ANSI/TIA-222-G-2005.

i. Re-tension guy wires. 0-1 year $3,000

Sub Total: $3,000

Total: $4,950

I. CONCRETE FOUNDATIONS

Issue: Repair/Modification: Repair Schedule:

I.1.c. Ground condition (Site condition (standing water, drainage, trees, etc.))

Excess vegetation observed at compound, equipment shelter, and anchor locations.

i. Clear compound and anchor locations of excess vegitation.

$650

Sub Total: $650

Fee:

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J. GUYED MAST ANCHORS

NO DEFICIENCIES WERE IDENTIFIED

K. TOWER ALIGNMENT

Issue: Repair/Modification: Repair Schedule:

K.1. Tower Plumb and Twist

a. Tower twist and plumb were not within acceptable limits per ANSI/TIA-222-G-2005.

i. Re-tension guy wires to bring tower within acceptable limits.

0-1 year $0

Sub Total: $0

Total: $0

L. NON-TIA RELATED ITEMS

Issue: Repair/Modification: Repair Schedule:

L.2. Security

a. Perimeter fencing was observed missing around compound and guy anchor locations. See summary for details.

i. Tower owner determines if fencing should be installed around the compound and guy anchor locations.

0-1 year $8,500

Sub Total: $8,500

Total: $8,500

OTHER CONSTRUCTION COSTS

Item:

a. Permits / Application Fees $1,000

b. Post Modification Inspection Report $2,000

c. Mobilization Costs

Sub Total: $3,000

Total: $3,000

GRAND TOTAL: $50,350

Fee:

Fee:

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ANNEX A:

STEEL AND APPURTENANCE MAPPING

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TOWER MAPPING

Site Name

TEP #

Client # Date Page of

SIERRA VIEJA

63591_37920, REV. 1

TX8584

JANUARY 8, 2016

Page Title Initials Page # (s) Notes Checklist & Notes

Ladder

Tower Elevation

Latitude: Longitude:

Ground Elevation:

Site Address:

Special Access Issues (Key Entry, Hidden/Unmarked Access, FM/TV on tower):

FCC#:

Tower ID Plate:

Existing Carriers/Site #:

Gate Combo:

Telephone Company:

Pedestal # and Location:

Power Company:

Meter # and Owner:

30.579800 (N 30° 34' 47.28")

5785' ± (GOOGLE EARTH)

12.5± MILES WEST OF VALENTINE, TX 79854 (JEFF DAVIS COUNTY)

N/A

CNR

CNR

CNR

RIO GRANDE ELEC COOP INC

49 951 934

N/A

-104.706600 (W 104° 42' 23.76")

326 Tryon Rd, Raleigh, NC 27603 o) 919.661.6351 f) 919.661.6350 www.tepgroup.net

Antenna and Mount Sketch

Guy Anchor Details

EAE

Signature of Crew Leader

Print Name:

Signature of Crew Member

Print Name:KYLE R. UNDERHILL

Transmission Cables

Abbreviations: AGL: Above Ground Level BP: Bent Plate B-B: Bolt to Bolt C-C: Center to Center C: Channel CNR: Could Not Record EW: Elliptical Waveguide FH: Foam Heliax

L: Angle 2L: Double Angle MC: Metal Conduit ME: Minimum Edge MOD: Modification PL: Plate RC: Rigid Conduit RHSS: Round Hollow Struct. Section

S.B.: Stitch Bolts Schl: Schifflerized Angle SM: Smooth Heliax SP: Spacing SR: Solid Rod Th: Thickness Tri: Triangular

EAE

EAE

EAE

EAE

EAE

EAE

Torque Arm Detail

Compound Detail EAE

Typical Tower Section Detail 6-8EAE

12-19

Waveguide Ladder 4EAE

JEREMIAH FOX

NONE

20-21Photos EAE

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CBP

TEP #

Client # Date Page of

SIERRA VIEJA

63591_37920, REV. 1

TX8584

JANUARY 8, 2016

COMPOUND DETAIL

326 Tryon Rd, Raleigh, NC 27603 o) 919.661.6351 f) 919.661.6350 www.tepgroup.net

Plan View

Access Road Equipment Shelter Compound View

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TEP #

Client # Date Page of

SIERRA VIEJA

63591_37920, REV. 1

TX8584

JANUARY 8, 2016

LADDER

326 Tryon Rd, Raleigh, NC 27603 o) 919.661.6351 f) 919.661.6350 www.tepgroup.net

Climbing Ladder #1 Sketch

Description Ladder

# Height Width Step Rail (type & size) Rung (type & size) Safety (type & size)

Climbing Ladder #1 Photo

18" 39" A & C LEGS 5

8"Ø SR 3

8"Ø10'-0" - 80-0"1

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TEP #

Client # Date Page of

SIERRA VIEJA

63591_37920, REV. 1

TX8584

JANUARY 8, 2016

WAVEGUIDE

326 Tryon Rd, Raleigh, NC 27603 o) 919.661.6351 f) 919.661.6350 www.tepgroup.net

Waveguide #1 Sketch

Description Waveguide

# Height Width Step Rail (type & size) Rung (type & size) Holes

Waveguide #1 Photo

38" 39" A & C LEGS L 2" x 2" x 18" (12) 34"10'-0" - 80'-0"1

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TEP #

Client # Date Page of

SIERRA VIEJA

63591_37920, REV. 1

TX8584

JANUARY 8, 2016

21TOWER ELEVATION 5

326 Tryon Rd, Raleigh, NC 27603 o) 919.661.6351 f) 919.661.6350

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TEP #

Client # Date Page of

SIERRA VIEJA

63591_37920, REV. 1

TX8584

JANUARY 8, 2016

TOWER SECTION ELEVATION

326 Tryon Rd, Raleigh, NC 27603 o) 919.661.6351 f) 919.661.6350 www.tepgroup.net

MEMBER SIZES

Member Size Bolts Stitch Bolts Gusset/Flange

LEG 1.75"Ø SR (3) 34"Ø N/A

▲ 61

2"x61 2"x34"

H1 5

8"Ø SR WELD N/A -

D1 5

8"Ø SR WELD N/A -

H2 L 11 2x11

2x316 WELD N/A - D2 7

8"Ø SR WELD N/A -

LADDER 5

8"Ø SR WELD N/A -

Face Width: 36"

Section 1 (0'-20') Photo

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TEP #

Client # Date Page of

SIERRA VIEJA

63591_37920, REV. 1

TX8584

JANUARY 8, 2016

TOWER SECTION ELEVATION

326 Tryon Rd, Raleigh, NC 27603 o) 919.661.6351 f) 919.661.6350 www.tepgroup.net

MEMBER SIZES

Member Size Bolts Stitch Bolts Gusset/Flange

LEG 1.75"Ø SR (3) 34"Ø N/A

▲ 61

2"x61 2"x34"

H1 L11 2"x11

2"x316" WELD N/A - D1 7

8"Ø SR WELD N/A -

Face Width: 36"

Sections 2-3 (20'-60') Photo

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TEP #

Client # Date Page of

SIERRA VIEJA

63591_37920, REV. 1

TX8584

JANUARY 8, 2016

TOWER SECTION ELEVATION

326 Tryon Rd, Raleigh, NC 27603 o) 919.661.6351 f) 919.661.6350 www.tepgroup.net

MEMBER SIZES

Member Size Bolts Stitch Bolts Gusset/Flange

LEG 1.75"Ø SR (3) 34"Ø N/A

▲ 61

2"x61 2"x34"

H1 L11 2"x11

2"x316" WELD N/A - D1 7

8"Ø SR WELD N/A -

D2 5

8"Ø SR WELD N/A -

Face Width: 36"

Sections 4 (60'-80') Photo

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ANCHOR HEAD

326 Tryon Rd, Raleigh, NC 27603 o) 919.661.6351 f) 919.661.6350 www.tepgroup.net

Photo

Guy #1-3 Connection at Tower

TOWER MAPPING

Site Name

TEP #

Client # Date Page of

SIERRA VIEJA

63591_37920, REV. 1

TX8584

JANUARY 8, 2016

Guy #

2A

Pin Hole Min Edge Turnbuckle (Type & Size) (A-Anchor)

Turnbuckle Gap (B-Anchor) (C-Anchor)

Guy Wire (Diameter)

Guy Wire (# of Strands)

7/16"

Preform (Color)

GREEN

8"

Shackle (Type & Size)

Lug Hole (Diameter)

1 58"

Lug Hole (Min. Edge)

Guy Lug (Type & Size)

Guy Lug (Connection)

Guy Banding

1 78" (3) 34"Ø BOLTS

Elevation (At Tower)

79'-8" 39'-8"

Guy #

2A

1 WELD1 12"

9/16"

N/A 1" SEE DRAWING

YELLOW

Ring:

Anchor Rod:

Anchor Loop:

Radius (A - Anchor):

Radius (B - Anchor):

Radius (C - Anchor):

Anchor Head Thickness:

SINGLE

PL 11

2"x1" 16"Ø

Elevation:

Elevation:

Elevation:

Anchor Holes:

1 - GUY 1

2 - GUY 2A

3 - GUY 2B

66.5' 66.5' 66.0'

+0 +0 +0

1"Ø 5 12"3

4" J-E 1 12"

PL 10"x 12"

5"7 8" J-E

2B 77/16" GREEN 6 12"3

4" J-E

2B

1 12" 4 12"

4" 6"

7 12"

5 14"

N/A

8" 1 58" 1 78"

1 12" 1 12"

PL 10"x 12" (3) 34"Ø BOLTS N/A N/A79'-8"

4"

1"Ø 1"Ø

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A

Site Name

TEP #

Client # Date Page of

SIERRA VIEJA

63591_37920, REV. 1

TX8584

JANUARY 8, 2016

TORQUE ARM DETAIL

326 Tryon Rd, Raleigh, NC 27603 o) 919.661.6351 f) 919.661.6350 www.tepgroup.net

PHOTOS PLAN VIEW

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1-2 3-5

6-9

45°

165°285°

TOWER MAPPING

Site Name

TEP #

Client # Date Page of

SIERRA VIEJA

63591_37920, REV. 1

TX8584

JANUARY 8, 2016

TRANSMISSION CABLES

326 Tryon Rd, Raleigh, NC 27603 o) 919.661.6351 f) 919.661.6350 www.tepgroup.net

Color Code: B = Blue, Br=Brown, G = Green, O = Orange, R = Red, W = White, Y = Yellow Coax# Type/ Size Height Antenna Color Code Carrier Notes

1 FH 78 10' - 56'-8" 3 - CBP -

2 FH 78 10' - 77'-1" 6, 7 - CBP -

3 FH 78 10' - 77'-7" 8 - CBP -

4 3

8"Ø SM 10' - 78'-8" 9 - CBP -

5 3

8"Ø SM 10' - 35'-0" 2 - CBP -

6 FH 78 10' - 64'-6" 4 - CBP -

7 FH 78 10' - 25'-6" 1 - CBP -

8 FH 78 10' - 69'-3" 5 - CBP -

9 FH 78 10' - 79'-7" 11 - CBP -

ANT 10 HAS NO COAX

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Site Name

TEP #

Client # Date Page of

SIERRA VIEJA

63591_37920, REV. 1

TX8584

JANUARY 8, 2016

ANTENNA AND MOUNT SKETCH

326 Tryon Rd, Raleigh, NC 27603 o) 919.661.6351 f) 919.661.6350 www.tepgroup.net

Antenna Manufacturer Antenna Model #

RADIATION SYSTEMS P-17A72GP - -

Side Elevation Plan View

TMA # TMA Model #

Photo of Antenna

Carrier

CBP

Horiz. Coax Run @ Antenna Coax Jumper LengthD-Tilt (Mech.) Frequency

Mount Elevation LegAntenna # 1 25'-6" A

Mount Type Azimuth

PIPE 340°

Antenna Elevation 25'-6"

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Site Name

TEP #

Client # Date Page of

SIERRA VIEJA

63591_37920, REV. 1

TX8584

JANUARY 8, 2016

ANTENNA AND MOUNT SKETCH

326 Tryon Rd, Raleigh, NC 27603 o) 919.661.6351 f) 919.661.6350 www.tepgroup.net

Antenna Manufacturer Antenna Model #

NONE 5-FT 6-ELEMENT YAGI - -

Side Elevation Plan View

TMA # TMA Model #

Photo of Antenna

Carrier

CBP

Horiz. Coax Run @ Antenna Coax Jumper LengthD-Tilt (Mech.) Frequency

Mount Elevation LegAntenna # 2 - A

Mount Type Azimuth

DIRECT N/A

Antenna Elevation 35'-0"

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Site Name

TEP #

Client # Date Page of

SIERRA VIEJA

63591_37920, REV. 1

TX8584

JANUARY 8, 2016

ANTENNA AND MOUNT SKETCH

326 Tryon Rd, Raleigh, NC 27603 o) 919.661.6351 f) 919.661.6350 www.tepgroup.net

Antenna Manufacturer Antenna Model #

UNKNOWN 22-FT 4-ELEMENT DIPOLE - -

Side Elevation Plan View

TMA # TMA Model #

Photo of Antenna

Carrier Horiz. Coax Run @ Antenna Coax Jumper LengthD-Tilt (Mech.) Frequency

- -- -CBP

Mount Elevation LegAntenna # 3 52'-9" C

Mount Type Azimuth

STANDOFF N/A

Antenna Elevation 52'-9"

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Site Name

TEP #

Client # Date Page of

SIERRA VIEJA

63591_37920, REV. 1

TX8584

JANUARY 8, 2016

ANTENNA AND MOUNT SKETCH

326 Tryon Rd, Raleigh, NC 27603 o) 919.661.6351 f) 919.661.6350 www.tepgroup.net

Antenna Manufacturer Antenna Model #

RADIATION SYSTEMS P-17A96GF - -

Side Elevation Plan View

TMA # TMA Model #

Photo of Antenna

Carrier

CBP

Horiz. Coax Run @ Antenna Coax Jumper LengthD-Tilt (Mech.) Frequency

Mount Elevation LegAntenna # 4 64'-6" A

Mount Type Azimuth

PIPE 110°

Antenna Elevation 64'-6"

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Site Name

TEP #

Client # Date Page of

SIERRA VIEJA

63591_37920, REV. 1

TX8584

JANUARY 8, 2016

ANTENNA AND MOUNT SKETCH

326 Tryon Rd, Raleigh, NC 27603 o) 919.661.6351 f) 919.661.6350 www.tepgroup.net

Antenna Manufacturer Antenna Model #

UNKNOWN 5-FT 6-ELEMENT YAGI - -

Side Elevation Plan View

TMA # TMA Model #

Photo of Antenna

Carrier Horiz. Coax Run @ Antenna Coax Jumper LengthD-Tilt (Mech.) Frequency

- -- -CBP

Mount Elevation LegAntenna # 5, 6 - C, A

Mount Type Azimuth

DIRECT N/A

Antenna Elevation 69'-3", 72'-1"

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Site Name

TEP #

Client # Date Page of

SIERRA VIEJA

63591_37920, REV. 1

TX8584

JANUARY 8, 2016

ANTENNA AND MOUNT SKETCH

326 Tryon Rd, Raleigh, NC 27603 o) 919.661.6351 f) 919.661.6350 www.tepgroup.net

Antenna Manufacturer Antenna Model #

SCALA CL-400A - -

Side Elevation Plan View

TMA # TMA Model #

Photo of Antenna

Carrier

CBP

Horiz. Coax Run @ Antenna Coax Jumper LengthD-Tilt (Mech.) Frequency

Mount Elevation LegAntenna # 7, 8 77'-1", 77'-7" A, C

Mount Type Azimuth

PIPE N/A

Antenna Elevation 77'-1", 77'-7"

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Site Name

TEP #

Client # Date Page of

SIERRA VIEJA

63591_37920, REV. 1

TX8584

JANUARY 8, 2016

ANTENNA AND MOUNT SKETCH

326 Tryon Rd, Raleigh, NC 27603 o) 919.661.6351 f) 919.661.6350 www.tepgroup.net

Antenna Manufacturer Antenna Model #

UNKNOWN 3' TALL 3"Ø 2-POLE ANT - -

Side Elevation Plan View

TMA # TMA Model #

Photo of Antenna

Carrier

CBP

Horiz. Coax Run @ Antenna Coax Jumper LengthD-Tilt (Mech.) Frequency

Mount Elevation LegAntenna # 9 78'-8" C

Mount Type Azimuth

STANDOFF N/A

Antenna Elevation 78'-8"

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Site Name

TEP #

Client # Date Page of

SIERRA VIEJA

63591_37920, REV. 1

TX8584

JANUARY 8, 2016

ANTENNA AND MOUNT SKETCH

326 Tryon Rd, Raleigh, NC 27603 o) 919.661.6351 f) 919.661.6350 www.tepgroup.net

Antenna Manufacturer Antenna Model #

UNKNOWN 22' 4-ELEMENT DIPOLE - -

Side Elevation Plan View

TMA # TMA Model #

Photo of Antenna

Carrier

CBP

Horiz. Coax Run @ Antenna Coax Jumper LengthD-Tilt (Mech.) Frequency

Mount Elevation LegAntenna # 10, 11 - A, B

Mount Type Azimuth

DIRECT N/A

Antenna Elevation 89'-7", 89'-7"

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TEP #

Client # Date Page of

SIERRA VIEJA

63591_37920, REV. 1

TX8584

JANUARY 8, 2016

PHOTOS

326 Tryon Rd, Raleigh, NC 27603 o) 919.661.6351 f) 919.661.6350 www.tepgroup.net

TOWER ELEVATION

COMPOUND

POWER METER

COMPOUND

COMPOUND

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TEP #

Client # Date Page of

SIERRA VIEJA

63591_37920, REV. 1

TX8584

JANUARY 8, 2016

PHOTOS

326 Tryon Rd, Raleigh, NC 27603 o) 919.661.6351 f) 919.661.6350 www.tepgroup.net

ANT. 8,9 TAG

ANT 5 TAG

TYPICAL TORQUE ARM CONNECTION

TYPICAL GUY ANCHOR

ICE BRIDGE

TYPICAL FLANGE

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ANNEX B:

STRUCTURAL ANALYSIS

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HNTB - Halff JV 326 Tryon Road 5910 W. Plano Pkwy, Suite 200 Raleigh, NC 27603 Plano, TX 75093 (919) 661-6351

(214) 557-1745 mgardner@tepgroup.net

Subject: Structural Analysis Report - Revision 1

HNTB - Halff JV Designation: Site Name: Sierra Vieja TRIRIGA BU Number: TX8584

Engineering Firm Designation: TEP Project Number: 63591_37920

Site Data: 12.5± Miles West of Valentine, Jeff Davis County, TX 79854 Lat., Long.: 30.579800, -104.706600(N30°34'47.28'',W104°42'23.76'') 80 Foot - Guyed Tower Dear Ms. Schwalje, Tower Engineering Professionals is pleased to submit this “Structural Analysis Report” to determine the structural integrity of the above mentioned tower.

The purpose of the analysis is to determine acceptability of the tower stress level. Based on our analysis we have determined the tower stress level for the structure, under the following load case, to be:

LC1: Existing Equipment Insufficient Capacity Note: See Table 1 for the existing loading

The analysis has been performed in accordance with the ANSI/TIA-222-G-2-2009 Structural Standard for Antenna Supporting Structures and Antennas – Addendum 2 and the 2006 International Building Code based upon a wind speed of 90 mph 3-second gust and exposure category C.

All modifications and equipment proposed in this report shall be installed in accordance with the appurtenances listed in Table 1 and the attached drawings for the determined available structural capacity to be effective.

We at Tower Engineering Professionals appreciate the opportunity of providing our continuing professional services to you and HNTB - Halff JV. If you have any questions or need further assistance on this or any other projects please give us a call.

Structural analysis prepared by: Stephen E. Bunting, E.I.

Structure Capacity

Controlling Component

147.5% Tower Diagonal T2: (60 – 73.33 ft)

Texas Firm #F-11847

PROPERTY OF THE UNITED STATES GOVERNMENT- FOR OFFICIAL USE ONLY- DO NOT REMOVE THIS NOTICE- PROPERLY DESTROY DOCUMENTS WHEN NO LONGER NEEDED

80-ft Guyed Tower Structural Analysis TX8584 - Sierra Vieja TEP Project Number 63591_37920, Revision 1 Page 2 tnxTower Report - version 6.1.4.1

TABLE OF CONTENTS

1) INTRODUCTION

2) ANALYSIS CRITERIA

Table 1 - Existing Antenna and Cable Information Table 2 - Design Antenna and Cable Information

3) ANALYSIS PROCEDURE

Table 3 - Documents Provided 3.1) Analysis Method 3.2) Assumptions

4) ANALYSIS RESULTS

Table 4 - Section Capacity (Summary)

Table 5 - Dish Twist/Sway Results for 60 mph Service Wind Speed 4.1) Recommendations

5) APPENDIX A

tnxTower Output

6) APPENDIX B

Coax Configuration

7) APPENDIX C

Conceptual Modification Plan

PROPERTY OF THE UNITED STATES GOVERNMENT- FOR OFFICIAL USE ONLY- DO NOT REMOVE THIS NOTICE- PROPERLY DESTROY DOCUMENTS WHEN NO LONGER NEEDED

TEP Project Number 63591_37920, Revision 1 Page 3

1) INTRODUCTION

This tower is an 80-ft guyed tower located in Jeff Davis County, Texas. The original design criteria were unavailable for review. TEP visited the site in October of 2015 to gather existing tower steel and appurtenance information. All other information provided to TEP was assumed to be accurate and complete.

2) ANALYSIS CRITERIA

The analysis has been performed in accordance with the ANSI/TIA-222-G-2-2009 Structural Standard for Antenna Supporting Structures and Antennas – Addendum 2 using a 3-second gust wind speed of 90 mph with no ice and 60 mph under service…