15261 Final Report FY19 PMV080.pdf

MATERIAL APPROVAL SUBMITTAL

(See Instructions on Reverse)

TO (Contracting Officer) FROM DATE

CONTRACTING OFFICER

U.S. COAST GUARD

CIVIL ENGINEERING UNIT OAKLAND

1301 CLAY ST, 7th FLOOR, SUITE 700N

OAKLAND, CA 94612-5203

COMMDEX c/o Ory Conrad oconrad@commdex.com

(949) 546-5055

12/05/19

CONTRACT NUMBER SUBMISSION NUMBER SUBMITTAL

HSCG88-17-D-PMV090 017R2 NEW X RESUBMITTAL

PREVIOUS SUBMISSION NUMBER TASK ORDER NUMBER

70Z08819FPMV08000

TO BE COMPLETED BY CONTRACTOR

FOR GOVERNMENT USE ONLY

ITEM

NO.

SPECIFICATION SECTION /

PARA. NO. / DRAWING NO.

DESCRIPTION OF MATERIAL

(Include Type, Model Number, Catalog Number, Mfg., Etc.)

APPROVED

DIS-

APPROVED

SEE

REVERSE

INITIAL

1 15261 CAMS Tower (RX OMNI) Final Report

TYPED OR PRINTED NAME SIGNATURE DATE

Ory Conrad 12/05/19

TO: (Contractor)

O Approved O Disapproval as indicated Above and Subject to Any Applicable Comments on the Reverse Side. Request Resubmittal on Disapproved Items Within __________ Days of Date Shown Below.

TYPED OR PRINTED NAME OF CONSTRUCTION MANAGER

TYPED OR PRINTED NAME OF CONTRACTING OFFICER SIGNATURE DATE

Copy of reviewed form to be provided to the Contracting Officer and Contract Specialist

Ory Conrad Digitally signed by Ory Conrad Date: 2019.12.05 21:19:47 -08'00'

COMMENTS

(Number to Correspond with Applicable Item Number on Reverse)

INSTRUCTIONS TO CONTRACTORS

1. The term “material” is defined as articles, supplies, raw materials, equipment, parts, components, and end items that are to be incorporated into the work required by the contract.

2. This form is to be used by contractors for submitting Shop Drawings, Equipment Data, Manufacturer’s Literature and Certificates and Samples of Materials to the Government for approval in accordance with the provisions of this contract. Unless otherwise specified, it is to be prepared in 3 copies, signed, and provided to the Construction Manager with appropriate attachments.

3. Item(s) to be approved will be clearly tabbed or identified. Data pertaining to item(s) to be approved will be clearly identified or tabbed, particularly where documents are voluminous, in order to properly evaluate the materials or articles to be incorporated in the work. Each attachment will be numbered to correspond with the item number shown on the face of this form and the corresponding Submittal Register number contained in the specifications.

4. Requests submitted shall be numbered consecutively, by contract, in the space entitled “Submission No.” This number, in addition to the Contract No., will be used to identify each Material Approval Submittal. Resubmissions will be indicated in the appropriate block and the insertion of previous submission number and date in addition to a new submission number. A single submission should be used for all work of a section of the specifications, but in NO instance should the submission include work for more than one (1) contract. Submittals requiring priority handling will be submitted by separate submittal using the form and so marked across the face of the form.

5. This Material Approval Submittal is not valid unless the Construction Manager signs it. This approval is required as called for under the terms of this contract.

PROPERTY OF THE UNITED STATES GOVERNMENT – FOR OFFICIAL USE ONLY

TOWER MAINTENANCE AND CONDITION REPORT

December 4, 2019

U.S. Coast Guard Designation:

Site Name: CAMS Tower (RX OMNI) Site Number: 15261

Engineering Firm Designation:

TEP Project Number: 239691.308737

Site Data:

17000 Sir Francis Drake Blvd.

Inverness, CA 94937 Latitude N 38.106346°, Longitude W -122.93504° 80 Foot – Guyed Tower

Inspection Completed By:

Tower Engineering Professionals 10/9/2019

Kelsey Spencer, CWI Robert Bradley

William H. Martin, P.E, PEng, S.E., G.C., C.W.I.

Tower Engineering Professionals

Guyed Tower Maintenance and Condition Assessment Report 12/4/2019 CAMS Tower (RX OMNI)

PROPERTY OF THE UNITED STATES GOVERNMENT

FOR OFFICIAL USE ONLY

Commanding Officer Civil Engineering Unit Miami 15608 SW 117th Ave Miami, FL 33177

General Comments:

Tower Engineering Professionals (TEP) completed a periodic inspection for the above referenced site. The onsite investigation was performed by Kelsey Spencer, CWI and Robert Bradley of TEP during the October 9, 2019 site visit. The inspection was in accordance with the Scope of Services for tower inspections, maintenance, and repairs of U.S. Coast Guard Towers dated January 2019, the U.S. Coast Guard Tower Manual CIM M11000.4A, FAA AC 70/7460-1L, TIA-322, ANSI/ASSE A10.48, and 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 is pages 4 thru 9 of this report.

Observations and recommendations are listed herein. For this inspection, the tower legs were named alphabetically according to the position of the ladder per the U.S. Coast Guard Tower Manual CIM M11000.4A.

The overall condition of the tower is satisfactory with a few exceptions. This is detailed in the report.

Chronological Narrative:

TEP arrived onsite at 8:00 am. We began by conducting a tail gate safety meeting with all involved and completing a job safety analysis form. Work began at this tower at 9:15 am with a ground and tower base inspection. We began climbing the tower at 9:30 am. The climbing inspection ended at approximately 11:00 am. All aerial maintenance issues were noted and photographed. TEP left the site at 12:45pm.

Maintenance Accomplished:

- Minor corrosion was cleaned with hand tools and coated with an approved cold galvanizing compound.

Note:

- Due to accessibility, TEP could only inspect the (6) wooden support poles from the ground.

- No assets were present within a 150’ radius of the tower.

- No unutilized equipment was observed on the structure.

- No tower identification tag was present on site.

Tower Verification:

Equipment Used:

Equipment Used

Dillon Quick Check Nikon Forestry Pro

Lighting System Inventory:

Tower Name Lighting System Lighting Level/Qty Lamp type/size/model #

Confirmation the tower is FAA compliant 15261 – CAMS Tower

(RX OMNI)

N/A N/A N/A N/A

Tower Height Verification:

Tower Name Height of Foundation

Height of Base Insulator

Height of Tower

Height of Highest

Appurtenance Total Height

15261 – CAMS Tower

(RX OMNI)

0.5-ft 4-ft 80-ft 82-ft 86.5-ft

Tower Name

Site Identification/Signage

15261 – CAMS Tower (RX OMNI)

Site signage was not present on site

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: See Executive Summary for details.

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:

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: See Executive Summary for details.

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

Okay Possible Improvement Needs Repair Not Applicable Notes: See Executive 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.)

C. LIGHTING

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

Notes:

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)

D. GROUNDING

D.1. Connections

Notes: See Executive Summary for details.

D.2. Corrosion

Okay Possible Improvement Needs Repair Not Applicable Notes:

D.3. Lightning protection (secured to structure)

E. ANTENNAS AND LINES

E.1. Antenna condition

Notes:

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

Okay Possible Improvement Needs Repair Not Applicable Notes:

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

Okay Possible Improvement Needs Repair Not Applicable Notes:

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

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:

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:

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:

H.3. Guy tensions

Okay Possible Improvement Needs Repair Not Applicable Notes: See Executive Summary for details.

H.4. Measure guy tensions

Okay Possible Improvement Needs Repair Not Applicable Notes:

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

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: See Executive Summary for details.

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

Okay Possible Improvement Needs Repair Not Applicable Notes: See Executive Summary for details.

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)

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

EXECUTIVE SUMMARY

Photograph Observations and Recommendations

A.1. Damaged members (legs and bracing)

Observation:

Splitting was observed in all (6) of the wooden poles ranging from 1/2" to 1” wide. (Photos “A” and “B”)

Recommendation:

Have an engineer analyze the towers to determine if repair or modification is required.

B.1. Paint and/or galvanizing condition

Observation:

Cold galvanizing on the diagonal members of the tower is flaking from elevation 40’ to the top of the tower. TEP cleaned and galvanized these members. (Photos “C” and “D”)

Recommendation:

Monitor the tower for corrosion during the next inspection cycle. If section loss or pitting is observed on any tower leg, members, or hardware, consult with a licensed structural engineer to determine if members need to be repaired or replaced.

C

A

B

B.1. Paint and/or galvanizing condition (cont.)

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

Observation:

Surface corrosion was observed on the diagonal member bolt connections, the base of the tower, the anchor rod of outside anchor 3, the gussets of the guy connections of outer guy wires 10, 11, 12 at the top of the tower, and the wire rope clips on the safety wire of all guy anchors. Surface corrosion was also noted on anchor rod locations; A-Inner, Outer 3, Outer 5, and Outer 7. TEP cleaned and galvanized the accessible areas where surface corrosion was observed per TIA standards.

Corrosion was observed on the guy hardware at the top of all wooden support poles from the ground. TEP could not determine the extent of corrosion as the poles are not equipped with climbing facilities. (Photos “E”, “F”, “G”, and “H”)

Recommendation:

Thoroughly clean areas of corrosion on the guy hardware at the top of the wooden support poles 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, contact TEP immediately.

D

F

E

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

D.1. Connections

Broken ground leads were observed on the ground plate at the base of the tower. (Photo “I”)

Recommendation:

Replace with new ground leads.

I

G

H

H.3. Guy tensions

Observation:

The tensions of outer guy wires 3 and 4 could not be recorded and could not be measured on wires 3 and 4 due to a lack of clearance between preforms to use the Dillon Quick Check.

(Photo “J”)

Recommendation:

Tensions should be recorded with an inline Dillon. If recorded tensions are out of range, re-tension guy wires accordingly.

H.3. Guy tensions

The tension of outer guy wire 8 is above the recommended range of values for tension. TEP did not adjust tensions to avoid excessive increase or decrease in tensions of the wires that could not be recorded. (Photo “K”)

Recommendation:

Tensions should be recorded with an inline Dillon. If recorded tensions are out of range, re-tension guy wires accordingly.

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

Observation:

Vegetation within the tower compound is overgrown. (Photo “L”)

Recommendation:

Compound should be cleared of vegetative growth and sprayed to prevent future growth.

J

K

L

TOWER TENSION, PLUMB AND TWIST MEASUREMENTS

Table 1: Guy Wire Tensions

* Guy tensions could not be recorded due to lack of exposed area on guy wire between preforms. TEP did not adjust tensions to avoid excessive increase or decrease in tensions of the wires that could not be recorded. This resulted in the tension of (1) wire being outside of the recommended values of tension.

Guy Path Guy Level

Guy Size (diameter in inches) Measured

-5% of Initial

Tension (kips)

+5% of Initial Tension (kips)

Measured tension (kips) Results

Inner

A 1 3/8 1.465 1.615 1.60 OK

B 1 3/8 1.465 1.615 1.66 HIGH

C 1 3/8 1.465 1.615 1.64 HIGH

Outer

1 2 3/8 1.465 1.615 1.60 OK

2 2 3/8 1.465 1.615 1.62 HIGH

3 2 3/8 1.465 1.615 CNR* CNR*

4 2 3/8 1.465 1.615 CNR* CNR*

5 2 3/8 1.465 1.615 1.66 HIGH

6 2 3/8 1.465 1.615 1.66 HIGH

7 2 3/8 1.465 1.615 1.56 OK

8 2 3/8 1.465 1.615 1.78 HIGH*

9 2 3/8 1.465 1.615 1.66 HIGH

10 2 3/8 1.465 1.615 1.62 HIGH

11 2 3/8 1.465 1.615 1.50 OK

12 2 3/8 1.465 1.615 1.54 OK

TOWER TENSION, PLUMB AND TWIST MEASUREMENTS (cont.)

Table 2: Tower Twist Measurements

Reference Elevation

(above conc.)

Twist with Respect

To Base ( )

Allowable Twist with Respect

To Base ( )

Relative Twist Between Reference

Elevations ( )

Allowable Twist Between Reference

Elevations ( )

To w er T w ist

M ea su re m en ts 80-ft 0.00 ± 4.00

-0.26 ± 1.00 60-ft 0.26 ± 3.00

0.26 ± 1.00 40-ft 0.00 ± 2.00

0.00 ± 1.00 20-ft 0.00 ± 1.00

0.00 ± 1.00 0-ft 0.00 ± 0.00

Table 3: Lateral Deflection Measurements

Reference Elevation

(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

To w er D ef le ct io n M ea su re m en ts

80-ft 0.48 ± 2.40

0.317 ± 0.60

60-ft 0.16 ± 1.80

0.158 ± 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

Photograph Photograph

Photograph Photograph

Photograph