813509 R21 Tower San Onofre Peak Maintenance Report.pdf

PROPERTY OF THE UNITED STATES GOVERNMENT – FOR OFFICIAL USE ONLY

TOWER MAINTENANCE AND CONDITION REPORT

December 8, 2017

U.S. Coast Guard Designation:

Site Name: R21 Tower San Onofre Peak

Site Number: 813509

Engineering Firm Designation:

TEP Project Number: 81746

Site Data:

Camp Pendleton, San Diego County, CA 92055

Latitude N 33.36229°, Longitude W -117.496114°

100 Foot – Self-Support Tower

Inspection Completed By:

Tower Engineering Professionals

11/30/2017

Bryan Gilliam

Ryan Barger

Stanley J. Jarzombek, PE

Tower Engineering Professionals

Self-Support Tower Maintenance and Condition Assessment Report 12/8/2017

R21 Tower San Onofre Peak

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) removed the existing corroded safety climb system, installed a new safety climb system, and cleaned the A-Leg foundation and baseplate for the above referenced site. The removal and installation was performed by Bryan Gilliam and Ryan Barger of TEP during the November 30, 2017 site visit. The installation was in accordance with the Scope of Services for tower inspections, maintenance, and repairs of U.S. Coast Guard Towers dated March 2017, 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).

Chronological Narrative:

TEP arrived onsite at 10:30am. We began by conducting a tail gate safety meeting with all involved and completing a job safety analysis form. Work began at 10:45am with a ground and tower base inspection. We began climbing the tower at 11:00am and removed the existing safety climb cable. During the safety climb cable removal, the baseplate was cleaned and covered with cold galvanizing compound. At 11:15am the safety climb bracket at the base of the tower was cleaned and covered with cold galvanizing compound. At 11:45am we began installing the new safety climb cable. At 12:30pm the safety climb system was fully installed. All maintenance repairs were noted and photographed.

TEP left the site at 1:00pm.

Maintenance Accomplished:

- Existing corroded safety climb cable was removed, replaced with a new safety climb cable, and all components were cleaned with a wire brush and coated with an approved cold galvanizing compound.

- A-Leg base plate was cleaned with a wire brush and coated with an approved cold galvanizing compound.

- Corroded ground bar hardware at 76-ft on the C-Face was cleaned with a wire brush and coated with an approved cold galvanizing compound.

EXECUTIVE SUMMARY

Photograph Maintenance Accomplished

Observation:

1. The existing safety climb cable was severely corroded and in need of replacement. (Photo “A”)

TEP removed the existing cable and replaced with a new safety climb cable. (Photos “B”,” C”, “D”, ”E”, “F”) TEP also wire brushed and coated base plate with (2) coats of approved cold galvanizing compound. (Photo “B”)

C

B

A

EXECUTIVE SUMMARY (Continued)

Item 1 Photos Continued:

TEP removed the existing cable and replaced with a new safety climb cable. (Photos “B”, “C”, ”D”, ”E”, “F”) TEP also wire brushed and coated base plate with (2) coats of approved cold galvanizing compound. (Photo “B”)

D

E

F

EXECUTIVE SUMMARY

Observation:

1. Corroded ground bar hardware was observed on the

C-Face at 76-ft. (Photo “A”)

TEP also wire brushed and coated base plate with (2) coats of approved cold galvanizing compound. (Photo

“B”)

EXECUTIVE SUMMARY (Continued)

Photograph Observations and Recommendations

Observation:

1. A bent step peg was observed on the A-Leg at 88-ft.

(Photo “A” and “B”)

Recommendation:

Replace bent step peg.

PROPERTY OF THE UNITED STATES GOVERNMENT

FOR OFFICIAL USE ONLY

APPENDIX A:

CAPITAL EXPENDITURES TABLE