C05 Attachment 15 031005L050501-20221109-Barrillas Lookout-TSIR-Combined-v-13.8_01.pdf

STRUCTURE SUPPORT

BRANCH

FAA MMAC AJW-L523

TOWER INSPECTION

REPORT

Site ID: 031005L050501 v.13.9 1

Top Page: Site Information Region/Forest 0310 Forest Name Santa Fe National Forest Facility Type Remote (Sole) Site Name Barillas Lookout Life Safety Priority 1 Mission Capability Major Environmental Good Overall Tower Condition Priority 1 Site Coordinates Lat/Long 35°34'7.75"N, 105°28'24.13"W Inspection Team Matthew Burnett and Tyler Nelson Inspection Report Reviewed By Tanner Burnett Date of Inspection 11/9/2022 Obstruction Lighting No RF readings (safe/unsafe) Safe Tower Manufacture Unknown Tower Model CL-100 Serial Number Unknown Associated Drawing Numbers Unknown Tower Height 60’ Number of Sections 4 Elevation of Tower Slope Change N/A Tower Status/Current Use Status Inactive Current Use Fire Watch Tower Type/System Type Self Supported System Lookout Tower Leg and Brace Dimensions Leg 4”x4” Brace 3.5”x2.5” 2L Tower Cross Section/Face Width Cross Section Square Face Width 264” Base/Section Bolt Size/Grade Base 7/8” Section ¾” Foundation Dimensions/Type Dimensions 16”x16” Type Individual Pier Climbing Ladder/ Stairs Dimensions

Ladder Width 28” Rung to Rung 9” Rung Type Step/Steel Rung Size 10”x2.5”

Weather Conditions Temperature 46 °F Humidity 34% Wind Speed 34.5 mph Skies Clear

Access Road Owner FS Road Surface 4 - MODERATE

DEGREE OF USER

COMFORT

Accessibility 4 X 4 Required Road Length 3.9 miles

Access road starting Lat/Long 35°33'37.58"N, 105°32'15.16"W Narrowest Width 12’ Access Road Notes Native dirt and rock. Graded at first, gets rough towards the end.

Site Assessment Deficiency Report Green: No issues or minor issues noted due to non-compliance with a current standard.

Yellow: Non-critical issues identified that should be corrected, when possible, but is not an immediate concern.

Red: Critical issues identified that may affect personnel safety, cause a system outage, or damage to equipment. These issues require immediate attention or should be condemned. A Do Not Climb sign is installed if the structural integrity of the tower is compromised.

Life-Safety Compliance

PRIORITY LEVEL: 1 DEFICIENCY DESCRIPTION WITH RECOMMENDED CORRECTIVE ACTION (RCA):

-Lookout cab was burned up in a wildfire. The metal has been exposed to high heat causing visible damage. RCA:

Remove cab from top of tower. Replace with new cab if tower is to be used as a firewatch again.

-There are items that could fall from the floorless cab to the ground causing damage or injury. RCA: Remove any items that have the potential to fall.

-No lightning protection system (including down conductors and air terminals) has been installed on the tower. RCA:

Install an LPS to include an air terminal, down conductors, and tie into an earth electrode system in accordance with NFPA 780 Section 4.

-Catwalks and/or platforms are lacking toe boards. RCA: Install toe boards in accordance with OSHA regulations 1926.502(B)(1)(2) and/or 1926.502(J)(1)(2)(3).

-Note: The tower is in good condition and still good to use. The lookout cab is in critical condition and should be removed or replaced.

Reference: OSHA Deficiencies (OSHA Standards), Electrical Safety Deficiencies (NEC and NFPA 780) industry best practices), and Hazardous Conditions (issues of concern, life threatening).

Mission Capability

PRIORITY LEVEL: 2 DEFICIENCY DESCRIPTION WITH RECOMMENDED CORRECTIVE ACTION (RCA):

-Recommend collecting as-builds or mapping tower to support completion of a Structural Analysis. TIA-222 stipulates that guyed towers are analyzed once every three years and other structures analyzed once every five years.

Reference: Probability of system outage due to any reason, system life in current condition, theft/tampering preventive measure adequacy, Grounding & Bonding (NFPA 780), Lightning Protection System (NFPA 780), and Utilities & Power

(NEC).

Environmental

PRIORITY LEVEL: N/A DEFICIENCY DESCRIPTION WITH RECOMMENDED CORRECTIVE ACTION (RCA):

N/A

Reference: Wildlife and pest control, weather conditions, flood control, and hazardous waste conditions.

Site Corrective Actions Overview Were corrective actions performed during the inspection?

N/A

CORRECTIVE ACTIONS COMPLETED ON SITE WITH DETAILS LISTED BELOW:

N/A

Reference: Life safety compliance, mission capability, and environmental.

Contents Site Information Site Assessment Deficiency Report Site Corrective Actions Overview Contents ………………………………………………………………………………………………………………………..3 Asset Master File Link NRM Condition Assessment Link Overview Section 1: Test Data Collection Section 2: Overall Tower Condition Section 3: Foundation, Fencing, and Environmental Condition Section 4: Corrosion, Wood Rot, and Coating Condition Section 5: Overall Lightning Protection, Bonding, and Grounding Condition Section 6: Tower, Foundation, and Grounding Condition Pictures Section 7: Shelter Information Section 8: Lookout Cab Information:

Section 9: Primary and Redundant Power Information Section 10: Additional Notes/Continuation Sheet Section 11: Inspection Guidance

11.1 Tower Reference

11.2 Inspection Overview and procedures

11.3 Timber Condition Guidance

11.4 Concrete Condition Guidance

11.5 Steel Condition Guidance

Asset Master File Link: https://usfs.box.com/s/tvdayn44acr6quhxljqq0ksxyqm7cd1j

NRM Condition Assessment Link: No Documents Provided

Overview This document provides inspection details for self-supporting and guyed towers. Two basic categories are covered in the tower inspection:

1. Structural Condition

2. Corrosion and Coating

All findings within these applicable categories are checked for standards compliance and used to generate recommendations. If non-compliant issues are found, they are ranked according to their criticality as follows:

Priority 1: Critical issues that may affect personnel safety, cause a system outage, or damage to equipment. These issues require immediate attention.

Priority 2: A non-critical issue that should be corrected, when possible, but is not an immediate concern.

Priority 3: A minor issue or an item that has been noted due to non-compliance with a current standard.

These items may be compliant with previous standards.

Locations of non-compliant items are listed in the data tables. A location reference map is provided in Figure 1 on the next page. A trained tower inspection team performs inspections. Each team member has the following certifications:

Mobile Crane Operations Fundamentals Of Protective Coatings For Industrial Structures Fall Protection/High Angle Rope Rescue Grounding/Bonding/Shielding/Corrosion/Tower Inspections Guyed Tower Inspections

Common Abbreviations

“RCA” - Recommended Corrective Actions “SF” - Severity Factor “CSF” - Corrosion Severity Factor

WARNING

Due to safety limitations only employees/climbers trained in Fall Protection/High Angle Rescue shall be allowed to inspect or work above ground level.

It is imperative that communications between on-site personnel and inspection team members always remain open.

NOTICE

Safety guidelines including pre-climb equipment inspection and rescue/rappel planning will be followed at all times.

Rescue Plan Because of differences in tower systems a rescue plan including first man up contingencies for each individual inspection situation shall be discussed, agreed upon, and completely understood by each member of the inspection team at each site before any work above ground starts. (Refer to ‘Radome Rescue Planning and Procedures’)

Controlled Decent Plan Because of differences in tower systems a rappel plan for each individual inspection situation shall be discussed, agreed upon, and completely understood by each member of the inspection team at each site.

Keeping in mind that a minimum 5000-pound anchor point is mandatory for a safe rappel as outlined in Fall Protection training. (Refer to ‘Radome Rappel Planning and Procedures’)

Section 1: Inspection Data Collection Concrete PSI Test (Vertical/Horizontal)

Leg A: 7,914 PSI Leg B 8,588 PSI Leg C 7,405 PSI Leg D 6,088 PSI Leg AA N/A Leg BB N/A Leg CC N/A Leg DD N/A

Metal Thickness Average (Inches) Coating Thickness Average (Mils) Leg A 0.303” Member A 0.237” Leg A 3.36 mils Member A 3.89 mils Leg B 0.304” Member B 0.237” Leg B 4.66 mils Member B 4.14 mils Leg C 0.307” Member C 0.238” Leg C 6.60 mils Member C 3.87 mils Leg D 0.304” Member D 0.239” Leg D 3.84 mils Member D 4.53 mils Leg AA N/A Member AA N/A Leg AA N/A Member AA N/A Leg BB N/A Member BB N/A Leg BB N/A Member BB N/A Leg CC N/A Member CC N/A Leg CC N/A Member CC N/A Leg DD N/A Member DD N/A Leg DD N/A Member DD N/A

3 Point Ground Resistance Reading Soil Resistivity Reading

Bonded Points Ohms Bonded Points Ohms Structure Bond A Down Conductor A N/A Structure Bond B Down Conductor B N/A Structure Bond C Down Conductor C N/A Structure Bond D Down Conductor D N/A

Bonded Points Ohms Shelter Bonds N/A Bus Bar Bonds N/A Fence Post Bonds N/A Fence Corner Bonds N/A Wireway Bonds N/A Guy Wire Bonds N/A Other Bonds LP Tank

Guy Wire System Inspection

Strand Type

Size Foot Pounds (lbfs.)

(Legs with multiple guys, measurements are entered bottom to top)

Leg A N/A N/A N/A Leg B N/A N/A N/A Leg C N/A N/A N/A Leg D N/A N/A N/A

PLUMB AND TWIST INFORMATION WILL BE IN ATTACHMENT N/A

Test Data Notes -Plumb and twist data collection was unable to be performed due to the inaccessibility of all tower legs.

Section 2: Tower Structure, and Safety Conditions Tower member and hardware (Visual Inspection)

Compliance Deficiencies, Recommended Correction, and Standards/Regulations

Yes Priority -There are abandoned antennae on the cab. RCA: Remove antennae if they aren’t going to be used.

Damaged/Bent Members (Legs & Braces)

Loose Members Mounted Equipment

(Antennas, etc.)

Welded Connections

(Cracks, etc.)

Weep Holes (Plugged/Not Plugged)

N/A

Hardware (Loose, Missing, Damaged, Abandon)

Guy Wire System (Visual Inspection, Tensiometer Readings Section 1) Ref. Annex J TIA

222-H

Compliance Deficiencies, Recommended Correction, and Standards/Regulations

Yes Priority N/A

Strand Condition N/A

Turnbuckles N/A

Cable Connectors N/A

Guy Tensions N/A

Guy Anchors N/A

Ladder, Platforms, and Catwalks (Visual Inspection)

Compliance Deficiencies, Recommended Correction, and Standards/Regulations

Yes Priority -Catwalks and/or platforms are lacking toe boards. RCA: Install toe boards in accordance with OSHA regulations 1926.502(B)(1)(2) and/or 1926.502(J)(1)(2)(3).

-The catwalk and all associated hardware around the cab has been exposed to high heat. RCA: Remove or replace along with the lookout cab.

Ladder Climbing Safety System

N/A

Bent, Damaged or Missing Members

Catwalk Flooring (i.e., Grating/Wood Planks)

Hinged Access 1 Fastening Hardware (Nuts, Bolts, Screws, Rivets, etc.)

Transmission Lines (Visual Inspection)

Compliance Deficiencies, Recommended Correction, and Standards/Regulations

Yes Priority N/A

Coax and/or Waveguide Condition

N/A

Connector Weatherproofing

N/A

Transmission Line Supports

Lights and Sensors (Visual Inspection)

Compliance Deficiencies, Recommended Correction, and Standards/Regulations

Yes Priority N/A

Obstruction Light Bulbs and Lenses - Condition

N/A

Obstruction Light Control Box

N/A

Obstruction Light Photocell

N/A

Wiring Condition N/A

Section 3: Foundation, Fencing, and Environmental Condition Ground Condition (Visual Inspection)

Compliance Deficiencies, Recommended Correction, and Standards/Regulations Yes Priority N/A

Settlement, Movement, or earth cracks

Erosion Around Foundations

Other Ground Concerns (Standing Water, Drainage, etc.)

Concrete Condition (Visual Inspection, Digishmidt Concrete PSI Readings Section 1)

Compliance Deficiencies, Recommended Correction, and Standards/Regulations

Yes Priority

-SF-1 chipping on the tower foundation Choose an item.. RCA: Continue to monitor for noted chipping, cracking, and/or spalling to expand in any direction.

Grout Condition N/A Cracking, Spalling, Chipping

Low Spots (Collecting Moisture)

Fencing and Security Wire (Visual Inspection)

Compliance Deficiencies, Recommended Correction, and Standards/Regulations

Yes Priority N/A

Gated Access Points N/A Fence Posts N/A

Fencing Material (Chain Link, Wood Pickets, etc.)

N/A

Security Wire (Barbed and Razor Wire)

N/A

Fastening Hardware (Bolts, Screws, etc.)

Environmental Condition (Visual Inspection)

Compliance Deficiencies, Recommended Correction, and Standards/Regulations

Yes Priority N/A

Vegetation Overgrowth (Trees, Brush, Vines etc.)

Waste, Biohazards Infestation (Wasps, Rodents etc.)

Section 4: Corrosion, Wood Rot, and Coating Condition Main Tower and Facilities Wooden and Steel (Visual Inspection, Elcometer Thickness and Coating Readings from Section 1) Ref TI-222-H

Compliance Deficiencies, Recommended Correction, and Standards/Regulations

Yes Priority

N/A

Legs, Braces, and Other Structural Members

Climbing Facilities Stairways, Ladders and

Safety Systems, Grating/Wood Decking

Electrical Through Ways, Conduits, etc.

N/A

Equipment Mounts Fencing and Security

Wire N/A

Lightning Protection System (Conductors, Bus Bars, Welds, Bonding Connectors)

Fasteners (Nuts, Bolts, Clamps) (Visual Inspection)

Compliance Deficiencies, Recommended Correction, and Standards/Regulations

Yes Priority -CSF-1 corrosion has developed on base plate hardware. RCA: Perform corrosion abatement, recoat the surface, and continue to monitor.

-CSF-1 corrosion has developed on legs A, B, C, and D structure bonding hardware. RCA: Perform corrosion abatement, recoat the surface, and continue to monitor.

-CSF-1 minor corrosion has developed on stairway hardware. RCA:

Continue to monitor.

Legs, Braces, and Other Structural Members

Climbing Facilities Stairways, Ladders and

Safety Systems, Grating/Wood Decking

Electrical Through Ways, Conduits, etc.

N/A

Equipment Mounts N/A Fencing and Security

Wire N/A

Lightning Protection System (Bonding, Mounting Hardware)

Section 5: Overall Lightning Protection, Bonding, and Grounding Condition Inspection Points

(Visual Inspection, 3-point Ground Test, Megger, and

Milli-Ohms Meter) Ref

NFPA 780

Compliance Deficiencies, Recommended Correction, and Standards/Regulations

Yes Priority -No lightning protection system (including down conductors and air terminals) has been installed on the tower. RCA: Install an LPS to include an air terminal, down conductors, and tie into an earth electrode system in accordance with NFPA 780 Section 4.

-No ground well has been installed for earth electrode system test readings. RCA: A ground test well should be installed in accordance with NFPA 780 Annex A.4.13.1.

-The structure bond legs A, C, and D resistivity test is above 25 ohms.

RCA: Improve the bond to the earth electrode system to meet the 25 ohms accepted per NFPA 780 para. A.11.4.5.2.

Lightning Protection System (Rolling Ball, Air Terminal, Halo, and Down Conductor)

EES (Test Well, Conductor Size, and

Ground Rods)

Structure Bonds (Tower and Shelter)

Equipment Bonding (Antennas/Masts, Conduit, J-Boxes, Generator, LP tank, and Solar Array)

Fence Bonding (Fence Posts, Gates and Gate

Posts, and Security Wire)

Guy Wires N/A

Section 6: Tower, Foundation, and Grounding Condition Pictures

Foundation Pier

Foundation Chipping

Missing Toe Boards

Minor Corrosion

An Item That Could Fall

3-Point Ground Resistivity Test

Section 7: Shelter Information Shelter Exterior Picture Shelter Interior Picture

Shelter Exterior Picture Shelter Interior Picture

STRUCTURE NAME: N/A STRUCTURE SUPPORTS: N/A

HVAC BTU: N/A Make: N/A

STRUCTURE TYPE: N/A HVAC Model: N/A MAKE: N/A HVAC Serial: N/A MODEL: N/A EXTERIOR L x W x H: N/A SERIAL: N/A INTERIOR L x W x H: N/A USED FLOOR SPACE (2’x2’ typical rack): N/A NUMBER OF RACKS: N/A AVAILABLE FLOOR SPACE (based on a 2’x’2 square and not entering egress areas): N/A

Shelter Inspection Points

(Visual Inspection)

Compliance Deficiencies, Recommended Correction, and Standards/Regulations

Yes Priority -Note: No independent shelter or communications vault.

Exterior (Roof, Walls, Foundation, Doors, Windows) N/A

Interior (Ceiling, Walls, Floor)

N/A

Electrical (Lighting, Outlets, Load centers)

Fire Extinguishers N/A

Section 8: Lookout Cab Information:

Lookout Cab Exterior Picture Lookout Cab Interior Picture

Lookout Cab Exterior Picture Lookout Cab Interior Picture

STRUCTURE NAME: Barrillas Lookout STRUCTURE SUPPORTS: Inactive

HVAC BTU: N/A Make: N/A STRUCTURE TYPE: Metal Lookout Cab HVAC Model: N/A MAKE: Unknown HVAC Serial: N/A MODEL: CL-100 EXTERIOR L x W x H: 14x14 (Estimate) SERIAL: Unknown INTERIOR L x W x H: N/A USED FLOOR SPACE (2’x2’ typical rack): N/A NUMBER OF RACKS: N/A AVAILABLE FLOOR SPACE (based on a 2’x’2 square and not entering egress areas): N/A

Lookout Cab Inspection Points

(Visual Inspection)

Compliance Deficiencies, Recommended Correction, and Standards/Regulations

Yes Priority -Lookout cab was burned up in a wildfire. The metal has been exposed to high heat causing visible damage. RCA: Remove cab from top of tower.

Replace with new cab if tower is to be used as a firewatch again.

-There are items that could fall from the floorless cab to the ground causing damage or injury. RCA: Remove any items that have the potential to fall.

Exterior (Roof, Walls, Foundation, Doors, Windows)

Interior (Ceiling, Walls, Floor)

Electrical (Lighting, Outlets, Load centers)

Fire Extinguishers N/A

Section 9: Primary and Redundant Power Information Primary Power Picture

Redundant Power Picture

Primary Power Picture Redundant Power Picture

Primary Type: None Redundant Power Type: None Transformer #: N/A Fuel Type: N/A Pole or Protector #: N/A Transfer Switch Installed: N/A Meter #: N/A Fuel Tank Capacity: N/A Power Phase #: N/A Generator Make: N/A Site Disconnect: N/A Model: N/A Serial: N/A

Inspection Points

(Visual Inspection, megger, and milli-ohms meter) Ref:

NFPA 780 and NEC

Compliance Deficiencies, Recommended Correction, and Standards/Regulations

Yes Priority -Note: Solar and LP tank on site is no longer used and has been abandoned.

-CSF-1 corrosion has developed on the propane tank leg and label. RCA:

Perform corrosion abatement, recoat the surface, and continue to monitor.

-CSF-1 corrosion has developed on the propane tank line at the tower.

RCA: Perform corrosion abatement, recoat the surface, and continue to monitor.

Meter Base N/A Site Disconnect N/A

Grounding N/A Wiring/Conduit N/A

Battery/s N/A LP Tank Condition 3 LP Lines Condition 3

Solar Panels N/A

Section 10: Additional Notes/Continuation Sheet -Note: The tower is in good condition and still good to use. The lookout cab is in critical condition and should be removed or replaced.

Section 11: Inspection Guidance

11.1 Tower Reference

Locations referred to in the trip report are interpreted as follows:

Leg/Face “A” will be the first leg/face clockwise from true North, each additional leg/face continuing in the clockwise direction will increase alphabetically

Sections will be numbered starting with one at first complete section closest to ground level and increase numerically to the top of the tower

Section panels will be numbered starting with one at the lowest point in the section, associated section number, and corresponding face letter

Guy wires and guy pull-offs will be numbered starting with one at the lowest point increasing numerically to the top of the tower and corresponding leg letter

Guy anchors will be denoted starting closest to the tower as 1 (inside), 2 (middle), 3 (outside) and corresponding leg letter

Figure 1

11.2 Inspection Overview and procedures

The overall condition of the tower structural members, coax components, climbing facilities, fasteners, and other components are evaluated as outlined in this section. Visual and physical checks are performed to ensure that the tower and subsystems are structurally sound and functional.

Visual inspections are performed and recorded in section 1.2.1 that determine overall appearance, verify that all tower members and subsystem components are in place, and identify damaged, missing, or loose components.

Physical inspections are performed and recorded in section 1.2.2 that determines coating thickness, using an Elcometer 456 Coating Thickness Gauge. All corners of the tower are checked at the ground level and at any location that appears questionable with a three-point check that covers the leg and the braces on either side of it.

ASTM A-123A is referenced for coating thickness requirements.

Concrete foundations and anchoring hardware are visually checked for wear, damage, and proper construction as detailed in section 1.2.4. Concrete hardness tests are performed using a Proceq Digi-Schmidt Digital Concrete Test Hammer. Two hardness measurements are taken per foundation corner – one on the top of the foundation and one on the side.

The tower plumb results are provided in section 1.2.4. The plumb and twist inspection, in accordance with TIA- 222-H Annex J, determines the allowable deviation for tower structures. Allowable deviation depends in large part on the height and tower type. The transit is to be set up on each leg azimuth at the base of the tower. The corresponding tower leg at the base of the tower is used to set the vertical baseline, as shown for both three leg and four leg towers.

11.3 Timber Condition Guidance

Tower structural members, conduit, ladders, stairways, fasteners, and all other components made from Timber must be checked for deterioration and degradation in addition to standard member condition and in lieu of corrosion and proper protective coatings for steel members. The field guidance below is to be used to determine the appropriate compliance level with industry guidance from the American Wood Council, Federal Highway Administration Inspection Manual and American Institute of Timber Construction on material condition though the member may not physically denote large signs of distress, deterioration, and degradation.

The severity of deterioration for timber is reported in terms of degrees: 1st, 2nd or 3rd. These determinations are made visually and are based on the following criteria:

1st degree/SF-1 distress, deterioration and degradation is minor as described below Connections – Connection is in place and functioning as intended.

Decay – None Surface Irregularities – None Section Loss – None.

Check/Shake – Surface penetration less than 5% of the member thickness regardless of location.

Cracks – None.

Split/Delamination – None.

Abrasion/Wear – None or no measurable section loss.

Settlement – None.

Erosion/Scour – None Mechanical Damage – None Infestation – None Mold/Discoloration – None

2nd degree/SF-2 distress, deterioration and degradation is moderate as described below Connection – Loose fasteners or pack rust without distortion is present but the connection is in place and functioning as intended.

Decay – Localized cracking perpendicular to parallel to the grain giving the surface an appearance like charred wood Surface Irregularities – Localized areas of roughened surfaces, swollen or sunken faces

Section Loss – Material missing that affects less than 10% of the member section.

Check/Shake – Penetrates 5%-50% of the thickness of the member and not in a tension zone.

Cracks – Crack that has been arrested through effective measures.

Split/Delamination – Length less than the member depth Abrasion/Wear –Section loss less than 10% of the member depth.

Settlement – Exists within tolerable limits or arrested with no observed structural distress.

Erosion/Scour – Exists within tolerable limits or has been arrested with effective countermeasures.

Mechanical Damage – Distress caused by fasteners, joints or other locations exposing end grain or create pockets for moisture that has not weakened or warped member Infestation – Bores, pits or pockets created from insects noted on surface but has not weakened member Mold/Discoloration – Observed on surface but has not weakened member

3rd degree/SF-3 distress, deterioration and degradation is severe as described below

Connection – Missing bolts, rivets, or fasteners; broken welds; or pack rust with distortion Decay – Widespread cracking perpendicular to parallel to the grain giving the surface an appearance like charred wood Surface Irregularities – Widespread areas of roughened surfaces, swollen or sunken faces Section Loss – Material missing that affects 10% or more of the member Check/Shake – Penetrates more than 50% of the thickness of the member or more than 5% of the member thickness in a tension zone Cracks – Identified crack that is not arrested Split/Delamination – Length equal to or greater than the member depth Abrasion/Wear –Section loss 10% or more of the member thickness Settlement – Exceeds tolerable limits Erosion/Scour – Exceeds tolerable limits but is less than the critical limits Mechanical Damage - Distress caused by fasteners, joints or other locations exposing end grain or create pockets for moisture that has weakened or warped member Infestation – Bores, pits or pockets created from insects noted on surface and has weakened member Mold/Discoloration – Observed on surface and has weakened member

The importance of a distress, deterioration and degradation issue will be reported according to Priority 1, 2, or 3 (the same ranking system used in Sections 1 and 2):

11.4 Concrete Condition Guidance

Tower structural members, conduit, ladders, stairways, fasteners, and all other components made from Concrete must be checked for deterioration and degradation in addition to standard member condition and in lieu of corrosion and proper protective coatings for steel members. The field guidance below is to be used to determine the appropriate compliance level with industry guidance from the American Concrete Institute and Federal Highway Administration Inspection Manual on material condition though the member may not physically denote large signs of distress, deterioration and degradation.

The severity of deterioration for timber is reported in terms of degrees: 1st, 2nd or 3rd. These determinations are made visually and are based on the following criteria:

1st degree/SF-1 distress, deterioration and degradation is minor as described below Delamination/Spall/Patched Area – None Exposed Rebar - None Surface Irregularities – None Efflorescence/Rust Staining/Discoloration/Sweating – None Cracking – Sealed crack width less than 0.012 in. or spacing greater than 3.0 ft.

Abrasion/Wear – No abrasion or wearing Erosion/Scour – None

2nd degree/SF-2 distress, deterioration and degradation is moderate as described below Delamination/Spall/Patched Area – Delaminated. Spall 1 in. or less deep or 6 in. or less in diameter.

Exposed Rebar – Present without section loss Surface Irregularities – Localized areas of divots, pits, honeycombing or damaged faces.

Efflorescence/Rust Staining/Discoloration/Sweating – Surface white without build-up or leaching Without rust staining.

Cracking - Width 0.012-0.05 in. or spacing of 1.0 - 3.0 ft.

Abrasion/Wear – Abrasion or wearing has exposed coarse aggregate but the aggregate remains secure Erosion/Scour – Exists within tolerable limits or has been arrested with effective countermeasures.

Mechanical Damage – Distress caused by fasteners, joints or other locations exposing end grain or create pockets for moisture that has not weakened or warped member Infestation – Bores, pits or pockets created from insects noted on surface but has not weakened member Mold/Discoloration – Observed on surface but has not weakened member

3rd degree/SF-3 distress, deterioration and degradation are severe as described below

Delamination/Spall/Patched Area – Spall greater than 1 in. deep or greater than 6 in. diameter.

Exposed Rebar – Present with measurable section loss (less than 15%) Surface Irregularities – Widespread areas of divots, pits, honeycombing or damaged faces.

Efflorescence/Rust Staining/Discoloration/Sweating (1120) – Heavy build-up with rust staining.

Cracking - Width greater than 0.05 in. or spacing of less than 1 ft.

Abrasion/Wear – Coarse aggregate is loose or has popped out of the concrete matrix Erosion/Scour – Exceeds tolerable limits but is less than the critical limits Mechanical Damage - Distress caused by fasteners, joints or other locations exposing end grain or create pockets for moisture that has weakened or warped member Infestation – Bores, pits or pockets created from insects noted on surface and has weakened member Mold/Discoloration – Observed on surface and has weakened member

The importance of a distress, deterioration and degradation issue will be reported according to Priority 1, 2, or 3

11.5 Metal Condition Guidance

Tower structural members, conduit, ladders, stairways, fasteners, and all other components made from metal must be checked for deterioration and degradation in addition to standard member condition and in lieu of corrosion and proper protective coatings for metal members. The field guidance below is to be used to determine the appropriate compliance level with industry guidance from ANSI/TIA 222-G on material condition though the member may not physically denote large signs of distress, deterioration, and degradation.

The severity of deterioration for metal is reported in terms of degrees: 1st, 2nd or 3rd. These determinations are made visually and are based on the following criteria:

1st degree/CSF-1 distress, deterioration and degradation are minor as described below Corrosion – None Cracking – None Connection – Connection is in place and functioning as intended.

Distortion - None Settlement - None Erosion/Scour – None

2nd degree/CSF-2 distress, deterioration and degradation are moderate as described below Corrosion - Freckled Rust. Corrosion of the metal has initiated.

Cracking – Crack has self-arrested or has been arrested with effective arrest holes, doubling plates or similar.

Connections – Loose fasteners or pack rust without distortion is present but the connection is in place and functioning as intended.

Distortion – Distortion not requiring mitigation or mitigated distortion.

Settlement – Exists within tolerable limits or arrested with no observed structural distress.

Erosion/Scour – Exists within tolerable limits or has been arrested with effective countermeasures.

3rd degree/CSF-3 distress, deterioration and degradation are severe as described below

Corrosion - Section loss is evident, or pack rust is present Cracking – Identified crack that is not arrested Connections – Missing bolts, rivets or fasteners; broken welds; or pack rust with distortion Distortion – Distortion that requires mitigation that has not been addressed Settlement – Exceeds tolerable limits.

Erosion/Scour – Exceeds tolerable limits but is less than the critical limits

The importance of a distress, deterioration and degradation issue will be reported according to Priority 1, 2, or 3