HomeMy WebLinkAbout2012-04-17 Planning Board Supplemental Materials (35) NR�
AI
S, MV V
Rl
RF-EME Compliance Report Site No. BS23XC422
EBI Project No.62120373 300 Chestnut Street, North Andover, Massachusetts
EXECUTIVE SUMMARY
Purpose of Report
EnviroBusiness Inc. (dba EBI Consulting) has been contracted by Sprint Nextel to conduct radio
frequency electromagnetic (RF-EME) modeling for Sprint Site BS23XC422 located at 300 Chestnut
Street in North Andover, Massachusetts to determine RF-EME exposure levels from existing and
proposed Sprint wireless communications equipment at this site. As described in greater detail in
Section 11.0 of this report, the Federal Communications Commission (FCC) has developed Maximum
Permissible Exposure (MPE) limits for general public exposures and occupational exposures. This
report summarizes the results of RF-EME modeling in relation to relevant FCC RF-EME compliance
standards for limiting human exposure to RF-EME fields.
This report contains a detailed summary of the RF EME analysis for the site.
This document addresses the compliance of Sprint's proposed transmitting facilities independently and in
relation to all collocated facilities at the site.
UEBI 21 B Street • Burlington, MA 01803 . 1.800.786.2346
RF-EME Compliance Report Site No. BS23XC422
EBI Project No. 62120373 300 Chestnut Street, North Andover, Massachusetts
1.0 LOCATION OF ALL EXISTING ANTENNAS AND FACILITIES AND EXISTING RF LEVELS
This project involves the removal of six (6) existing antennas to be replaced with three (3) proposed
Sprint wireless telecommunication antennas on a lattice tower located at 300 Chestnut Street in North
Andover, Massachusetts. There are three Sectors (A, B, and C) proposed to be replaced at the site,
with one (1) antennas that may be re-installed per sector.
Based on drawings and aerial photography review, two unknown carriers also have wireless antennas on
the lattice tower.These antennas were included in the modeling analysis.
2.0 LOCATION OR ALL APPROVED(BUT NOT INSTALLED)ANTENNAS AND FACILITIES AND
EXPECTED RF LEVELS FROM THE APPROVED FACILITIES
There are no antennas or facilities that are approved and not installed based on information provided to
EBI and Sprint at the time of this report.
3.0 NUMBER AND TYPES OF WTS WITHIN 100 FEET OF THE PROPOSED SITE AND
ESTIMATES OF CUMULATIVE EMR EMISSIONS AT THE PROPOSED SITE
With the exception of the antennas mentioned in Section 1.0, there are no other Wireless
Telecommunication Service (WTS) sites observed within 100 feet of the proposed site.
4.0 LOCATION AND NUMBER OF THE SPRINT ANTENNAS AND BACK-UP FACILITIES PER
BUILDING AND NUMBER AND LOCATION OF OTHER TELECOMMUNICATION FACILITIES
ON THE PROPERTY
Sprint proposes the removal of six (6) existing antennas to be replaced with three (3) proposed Sprint
wireless telecommunication antennas on a lattice tower located at 300 Chestnut Street in North
Andover, Massachusetts. There are three Sectors (A, B, and C) proposed to be replaced at the site,
with one (1) antenna that may be re-installed per sector. In each sector, there is proposed to be one
antenna transmitting in the 800 MHz and the 1900 MHz frequency ranges. The Sector A antenna will be
oriented 800 from true north. The Sector B antenna will be oriented 210° from true north, The Sector
C antenna will be oriented 280° from true north. The bottoms of the Sector A and C antennas will be
127.4 feet above ground level. The bottom of the Sector B antenna will be 128.2 feet above ground
level.
Based on drawings and aerial photography review, two unknown carriers also have wireless antennas on
the lattice tower. These antennas were included in the modeling analysis.
5.0 POWER RATING FOR ALL EXISTING AND PROPOSED BACKUP EQUIPMENT SUBJECT TO
THE APPLICATION
The operating power for modeling purposes was assumed to be 20 Watts per transmitter for the 800
MHz antenna and there will be one (1) transmitter operating at this frequency. Additionally, for
modeling purposes it was assumed to be 20 Watts per transmitter and two (2) transmitters operating at
the 1900 MHz.
EBI 21 B Street 4 Burlington, MA 01803 . 1.800.786.2346
RF-EME Compliance Report Site No. BS23XC422
EBI Project No. 62120373 300 Chestnut Street, North Andover, Massachusetts
6.0 TOTAL NUMBER OF WATTS PER INSTALLATION AND THE TOTAL NUMBER OF WATTS
FOR ALL INSTALLATIONS ON THE BUILDING
The effective radiated power (ERP) for the 800 MHz transmitter combined on site is 721 Watts. The
ERP for the 1900 MHz transmitters combined on site is 2,347 Watts. The ERPs for other carriers on
site was not provided.
7.0 PREFERRED METHOD OF ATTACHMENT OF PROPOSED ANTENNA WITH PLOT OR ROOF
PLAN INCLUDING: DIRECTIONALITY OF ANTENNAS, HEIGHT OF ANTENNAS ABOVE
NEAREST WALKING SURFACE, DISCUSS NEARBY INHABITED BUILDINGS
Based on the information provided to EBI, the information indicates that the proposed antennas are to
be pipe-mounted to the lattice tower, operating in the directions, frequencies, and heights mentioned in
section 4.0 above. The surrounding properties are primarily wooded land with residences further to the
west and east.
8.0 ESTIMATED AMBIENT RADIO FREQUENCY FIELDS FOR THE PROPOSED SITE
Based on worst-case predictive modeling, there are no predicted areas on any accessible ground-level
walking/working surface related to the proposed Sprint antennas that exceed the FCC's occupational or
general public exposure limits at this site. At the nearest walking/working surfaces to the proposed
Sprint antennas, the maximum power density is 2.60 percent of the FCC's general public limit (0.52
percent of the FCC's occupational limit). The composite exposure level from all other carriers existing
on this site combined with Sprint's proposed antennas is 4.60 percent of the FCC's general public limit
(0.92 percent of the FCC's occupational limit) at the nearest walking/working surface to each antenna.
Based on worst-case predictive modeling, there are no areas at ground level related to the proposed
Sprint antennas that exceed the FCC's occupational or general public exposure limits at this site. At
ground level, the maximum power density generated by the Sprint antennas combined with the existing
other carriers antennas on site is 4.60 percent of the FCC's general public limit (0.92 percent of the
FCC's occupational limit). The inputs used in the modeling are summarized in the RoofView@ export file
presented in Appendix B.
There are no modeled areas on the ground that exceed the FCC's limits for general public or
occupational exposure in front of the other carrier antennas.
9.0 SIGNAGE AT THE FACILITY IDENTIFYING ALL WTS EQUIPMENT AND SAFETY
PRECAUTIONS FOR PEOPLE NEARING THE EQUIPMENT AS MAY BE REQUIRED BY THE
APPLICABLE FCC ADOPTED STANDARDS(DISCUSS SIGNAGE FOR THOSE WHO SPEAK
LANGUAGES OTHER THAN ENGLISH)
Signs are the primary means for control of access to areas where RF exposure levels may potentially
exceed the MPE. It is recommended that additional signage be installed for the new antennas making
people aware of the antennas locations. There are no fields in front of the proposed antennas and
therefore barriers are not recommended.
Additionally, there are areas where workers elevated above the ground may be exposed to power
densities greater than the general population and occupational limits. Workers and the general public
should be informed about the presence and locations of antennas and their associated fields.
Access to this site is accomplished via a gate in the fence surrounding the tower. Workers must be
elevated to antenna level to access thein, so these antennas are not accessible to the general public.
ci! BI 21 B Street 4 Burlington, MA 01803 + 1.800.786.2346
RF-EME Compliance Report Site No.BS23XC422
EBI Project No.62120373 300 Chestnut Street, North Andover, Massachusetts
10.0 STATEMENT ON WHO PRODUCED THIS REPORT AND QUALIFICATIONS
Please see the certifications attached in Appendix A below.
1 1.0 FEDERAL COMMUNICATIONS COMMISSION(FCC) REQUIREMENTS
The FCC has established Maximum Permissible Exposure (MPE) limits for human exposure to
Radiofrequency Electromagnetic (RF-EME) energy fields, based on exposure limits recommended by the
National Council on Radiation Protection and Measurements (NCRP) and, over a wide range of
frequencies, the exposure limits developed by the Institute of Electrical and Electronics Engineers, Inc.
(IEEE) and adopted by the American National Standards Institute (ANSI) to replace the 1982 ANSI
guidelines. Limits for localized absorption are based on recommendations of both ANSI/IEEE and
NCRP.
The FCC guidelines incorporate two separate tiers of exposure limits that are based upon
occupational/controlled exposure limits (for workers) and general public/uncontrolled exposure limits
for members of the general public.
Occupational/controlled exposure limits apply to situations in which persons are exposed as a
consequence of their employment and in which those persons who are exposed have been made fully
aware of the potential for exposure and can exercise control over their exposure. Occupational/
controlled exposure limits also apply where exposure is of a transient nature as a result of incidental
passage through a location where exposure levels may be above general public/uncontrolled limits (see
below), as long as the exposed person has been made fully aware of the potential for exposure and can
exercise control over his or her exposure by leaving the area or by some other appropriate means.
General publicluncontrolled exposure limits apply to situations in which the general public may be
exposed or in which persons who are exposed as a consequence of their employment may not be made
fully aware of the potential for exposure or cannot exercise control over their exposure. Therefore,
members of the general public would always be considered under this category when exposure is not
employment-related, for example, in the case of a telecommunications tower that exposes persons in a
nearby residential area.
Table I and Figure I (below),which are included within the FCC's OET Bulletin 65, summarize the MPE
limits for RF emissions. These limits are designed to provide a substantial margin of safety. They vary
by frequency to take into account the different types of equipment that may be in operation at a
particular facility and are "time-averaged" limits to reflect different durations resulting from controlled
and uncontrolled exposures.
The FCC's MPEs are measured in terms of power (mW) over a unit surface area (cm2). Known as the
power density, the FCC has established an occupational MPE of 5 milliwatts per square centimeter
(mW/cm2) and an uncontrolled MPE of I mW/cm2 for equipment operating in the 1900 MHz frequency
range. For the Sprint equipment operating at 800 MHz, the FCC's occupational MPE is 2.66 mW/cm2
and an uncontrolled MPE of 0.53 mW/cm2.These limits are considered protective of these populations.
EBI 21 B Street • Burlington, MAO 1803 + 1.800.786.2346
RF-EME Compliance Report Site No. BS23XC422
EBI Project No. 62120373 300 Chestnut Street, North Andover, Massachusetts
Table I: Limits for Maximum Permissible Exposure (MPE)
(A)Limits for Occupational/Controlled Exposure
Frequency Range. Electric Field Magnetic Field Averaging Time
Power Density(S)
(MHz) Strength (E) Strength(H) (mW/cmc) [E]" [H]=, or S
(Vim) (Alm) (minutes)
0.3-3.0 614 1.63 (100)* 6
3.0-30 1842/f 4.89/f (900/f)* 6
30-300 61.4 0.163 1.0 6
300-1,500 f/300 6
11500-100,000 5 6
(B) Limits for General Public/Uncontrolled Exposure
Frequency Range Electric Field Magnetic'.Field 'I
Averaging Time
(MHz) Strength E Strength (H) Power Density(S) zjH]', or S
(V/m) (A/m) . (mW/cmz) [E]
(minutes)
0.3-1.34 614 1.63 (100)* 30
1.34-30 824/f 2.19/f (180/ * 30
30-300 27.5 0.073 0.2 30
300-1,500 f/1,500 30
1,500-100,000 1.0 30
f= Frequency in (MHz)
*Plane-wave equivalent power density
,E/gure t. FCC UrnIts for Mextrnum Perm/ssfble Exposure(MPE)
Plane-wave Equivalent Power Density
1,000
ry 0«�PaGma:'Con4Med E.".
>U --General PopWzfF»ViKonbNYd Expowre�
E
to
s
o `
I `
3
0
EL 0.2 `-----'
o.r
O.03 0.3 � 3 30 300 13,000 30,000 1300,00
tm 1,6w 100,000
Frequency(MHz)
Based on the above, the most restrictive thresholds for exposures of unlimited duration to RF energy
for several personal wireless services are summarized below:
Personal Wireless Service Approximate OccupationalFrequency MPE Public MPE
Personal Communication(PCS) 1,950 MHz 5.00 mW/cm 1.00 mW/cm
Cellular Telephone 870 MHz 2.90 mW/cm 0.58 mW/cm
Specialized Mobile Radio 855 MHz 2.85 mW/cm 0.57 mW/cm
Most Restrictive Freq, Range 30-300 MHz 1.00 mW/cm 0.20 mW/cm
EBI 21 B Street 4 Burlington, MA 01803 + 1.800.786.2346
RF-EME Compliance Report Site No. BS23XC422
EBI Project No.62120373 300 Chestnut Street, North Andover, Massachusetts
MPE limits are designed to provide a substantial margin of safety. These limits apply for continuous
exposures and are intended to provide a prudent margin of safety for all persons, regardless of age,
gender, size, or health.
Personal Communication (PCS) facilities used by Sprint in this area operate within a frequency range of
800-1900 MHz. Facilities typically consist of. 1) electronic transceivers (the radios or cabinets)
connected to wired telephone lines; and 2) antennas that send the wireless signals created by the
transceivers to be received by individual subscriber units (PCS telephones). Transceivers are typically
connected to antennas by coaxial cables.
Because of the short wavelength of PCS services, the antennas require line-of-site paths for good
propagation, and are typically installed above ground level. Antennas are constructed to concentrate
energy towards the horizon, with as little energy as possible scattered towards the ground or the sky.
This design, combined with the low power of PCS facilities, generally results in no possibility for
exposure to approach Maximum Permissible Exposure (MPE) levels, with the exception of areas directly
in front of the antennas.
Statement of Compliance
A site is considered out of compliance with FCC regulations if there are areas that exceed the FCC
exposure limits and there are no RF hazard mitigation measures in place. Any carrier which has an
installation that contributes more than 5% of the applicable MPE must participate in mitigating these RF
hazards.
12.0 LIMITATIONS
This report was prepared for the use of Sprint Nextel. It was performed in accordance with generally
accepted practices of other consultants undertaking similar studies at the same time and in the same
locale under like circumstances. The conclusions provided by EBI are based solely on the information
provided by the client. The observations in this report are valid on the date of the investigation. Any
additional information that becomes available concerning the site should be provided to EBI so that our
conclusions may be revised and modified, if necessary. This report has been prepared in accordance
with Standard Conditions for Engagement and authorized proposal, both of which are integral parts of
this report. No other warranty, expressed or implied, is made
13.0 SUMMARY AND CONCLUSIONS
EBI has prepared this Radiofrequency Emissions Compliance Report for the proposed Sprint
telecommunications equipment at the site located at 300 Chestnut Street in North Andover,
Massachusetts.
EBI has conducted theoretical modeling to estimate the worst-case power density from Sprint antennas
and the other carriers' existing antennas to document potential MPE levels at this location and ensure
that site control measures are adequate to meet FCC and OSHA requirements. As presented in the
preceding sections, based on worst-case predictive modeling, there are no modeled exposures on any
accessible ground-level walking/working surface related to proposed equipment in the area that exceed
the FCC's occupational and general public exposure limits at this site. As such, the proposed Sprint
project is in compliance with FCC rules and regulations.
Signage is recommended at the site as presented in Section 9.0. Posting of the signage brings the site
into compliance with FCC rules and regulations.
EBI 21 B Street • Burlington, MA 01803 + 1.800.786.2346
RF-EME Compliance Report Site No. BS23XC422
EBI Project No. 62120373 300 Chestnut Street, North Andover, Massachusetts
Appendix A
Certifications
- EBI 21 B Street + Burlington, MA 01803 + 1.800.786.2346
RF-EME Compliance Report Site No. BS23XC422
EBI Project No. 62120373 300 Chestnut Street, North Andover, Massachusetts
Preparer Certification
I, Drew Duncklee, state that:
• I am an employee of EnviroBusiness Inc. (d/b/a EBI Consulting), which provides RF-EME safety
and compliance services to the wireless communications industry.
• I have successfully completed RF-EME safety training, and I am aware of the potential hazards
from RF-EME and would be classified 'occupational' under the FCC regulations.
• I am familiar with the FCC rules and regulations as well as OSHA regulations both in general and
as they apply to RF-EME exposure.
• I have reviewed the data provided by the client and incorporated it into this Site Compliance
Report such that the information contained in this report is true and accurate to the best of my
knowledge.
EBI 21 B Street + Burlington, MA 01803 + 1.800.786.2346
Appendix B
Roofview® Export File
Map,Settings,Antenna,and Symbol Data Table..Exported from workbook->RoofVew 4.IS.xIs
Done on 2/28/2012m3:02:04 PM.
Use this format to prepare Other dam sets for the RootVew workbook file.
You may use as many rows in this TOP header as you wish,
The critical point are the cell^in COLUMN ONE that read Start...'(eg.StartMapDefinmion)
If used,these(4)headers are required to be spelled exactly,as one word (eg.StartMapDeflnition)
The very next row will be considered the start of that data block.
The first row of the data black can be a header(as shown below),but this is optional.
When building a text file for import,Add the Map info first,then the Antenna data,followed by the symbol data.
NI rows above the first marker line'Start._'will be ignored,no matter how many there are,
This area is for you use for documentation.
End of help comments.
You can place as much text here as you wish as long as you don't place it below
the Stan Map Definition row below the blue line.
You may insert more rows using the Insert menu.
Should you need additional lines to document your project,simply insert additional rows
by highlighting the row number adjacent to the blue line below and then clicking on the Insert menu
and selecting rows.
£onion
Roof Maxx Roof Max>Map Max Y Map Max x Y Offset XOfset Number of envelope List Of Area
170 160 180 200 10 10 1$US41$FX$U541$FX$210 $U$41$M
•Data
Standard Method Uptime Sole FacroLow Thr Low Color Mid Thr Mid Color HI Thr Hl Color Over Color Ap Ht MUIt Ap Ht Method
4 2 1 1 100 1 500 4 5000 2 3 1.5 1
naDam It is advisable to provide an ID(art 1)forall antennas
(MHz) Trans Trans Coax Coax Other Input Glc (ft) IN IN (ft) dBd BWdth Uptime ON
ID Name Fred Power Count Len Type Loss Power Power Mfg Model X y Z Type Aper Gain Pt Dir Profile flag
SPT Al Sprint 800 20 1 101/2 OF 0.5 36.8667 RFS APXVSPP3£ 22 13 127.4 6 13.465;80 ON-
SPT Al Sprint 1900 20 2 101/2 OF 0.5 33.73339 RFS APXVSPPI£ 22 13 127.4 6 15.965;80 ON-
SFT Bi Sprint 800 20 1 101/2 OF 0.5 16.8667 Powenvav<P40-16-X£P 10 10 128.15 4.5 14.240;210 ON-
SPT BS Sprint 1900 20 2 101/2 OF 0.5 33.73339 Powerwav<P40-16-X£P 10 10 128.15 4.5 15.640;210 ON•
SPTC1 Sprint SOO 20 1 101/2 OF 0.5 16.8667 RFS APXVSPPl£ 8 13 127.4 6 13.465;280 ON•
SPTCS Sprint 1900 20 2 101/2 OF 0.5 33.73339 RFS APXVSPPI£ 8 13 127.4 6 15.965;280 ON•
UNKAS Unknown 1 850 100 1 3 50.11872 Unknown Unknown 22 13 138.75 3.5 ] 63;80 ON-
LINK 133 Unknown 1 850 100 1 3 50.1=Unknown Unknown 10 10 138.75 3.5 12 63;210 ON•
UNKC1 Unknown 1 850 100 1 3 50.11872 Unknown Unknown 8 13 138.75 35 12 63;280 ON•
UNG A3 Unknown 2 850 50 1 3 25.05936 Unknown Unknown 22 13 118.75 35 12 63;80 ON•
UNK2 A2 Unknown: 850 50 1 3 25.05936 Unknown Unknown 17 21 118.75 35 1263;80 ON•
UNK2 Bl Unknown: 850 50 1 3 25.05936 Unknown Unknown 10 10 118.75 35 12 63;210 ON•
UNX2 B2 Unknown: 850 50 1 3 25.05936 Unknown Unknown 20 9 118.75 35 12 63;210 ON•
UNK2C1 Unknown/ 850 50 1 3 25.05936 Unknown Unknown 8 13 118.75 35 1263;280 ON•
UNK2 C2 Unknown i 850 50 1 3 25.05936 Unknown Unknown 13 21 118.75 35 1263;280 ON•
IDam
Sym Map Marko RoofX Roof Map Label Desoription(notes for thismiale only)
Sym 5 35 AC Unit Sample symbols
Sym 14 5 Roof Access
Sym 45 SAC Unit
Sym 45 20 ladder
ENGINEERING
FDH Engineering,Inc.,2730 Rowland Rd.Raleigh,NC 27615,Ph.919.755.1012,Fax 919.755.1031
Structural Analysis for
SBA Network Services, Inc,
152'Guy Tower
SBA Site Name: North Andover
SBA Site ID: MA01085•A
Sprint Site ID: BS23XC422
Analysis Results
Tower Components 99.0% Sufficient
Foundation 89.0% Sufficient
Maximum Antenna Rotations at Service Wind Speed
Elevation ft Antenna Tilt de Twistde
130 26°MW Dish .0576 .0190
FDH Project Number 11-05129E S3
Prepared By: Reviewed By:
�wt/-)ktt ( '�cl�:)�
Stephanie Neal, EI J. Darrin Holt, Ph.D.PE
Project Engineer Principal
MA PE License No.47696
LStl
OF 1Gid
0
FDH Engineering,Inc.
2730 Rowland Rd. T
Raleigh, NC 27615 crinL
(919)755-1012 0.474H
info@fdh-inc.com A� to 676%
dd70NAL ESO
II 50(I r
November 30,2011
Prepared pursuant to ANSUTIA-222-G Structural Standard roaMtenna Supporb'ng Structures endAntennas
DOcumenl NO. ENG-RPT-503S Revision Dale:01108/09
Structural Analysis Report
SBA Network Services,Inc.
SBA Site ID:MA01085-A
November 30,2011
TABLE OF CONTENTS
EXECUTIVESUMMARY................................................................................................. 3
Conclusions
Recommendations
APPURTENANCE LISTING............................................................................................. 4
RESULTS.................................................................................................................... 6
GENERALCOMMENTS................................................................................................. 9
LIMITATIONS..................................................................................I............................ 9
APPENDIX................................................................................................................... 10
Document No. ENG-RPT-503S Revision Date:01/08/09 2
Structural Analysis Report
SBA Network Services,Inc.
SBA Site ID:MA01085-A
November 30,2011
EXECUTIVE SUMMARY
At the request of SBA Network Services, Inc., FDH Engineering, Inc. performed an analysis of the existing guyed tower
located in North Andover, MA to determine whether the tower is structurally adequate to support both the existing and
proposed loads, pursuant to the Structural Standard for Antenna Supporting Structures and Antennas, ANSI/TIA-222-G.
Information pertaining to the existing/proposed antenna loading, soil parameters, foundation dimensions, current tower
geometry,and the member sizes was obtained from:
o Sterling Engineering(Project No.061-697)Structural Analysis Report dated February 17,2005
o Sterling Engineering(Project No. 061-575)tower reinforcement drawings dated May 25, 2004
o URS Greiner(Job No. 0535525.03)Existing Tower Elevation and Layout dated October 7, 1998
o FDH Engineering, Inc. (Project No. 04-0333E) Dispersive Wave Propagation Testing of an Existing Tower
Foundation dated April 14,2004
o Geotechnologies, Inc. (Project No. 1-04-0498-EA)Report of Subsurface Investigation dated April 23, 2004
o FDH, Inc. (Project No. 10-04106T T1)TIA Inspection Report dated August 20, 2010
o FDH, Inc. (Project No. 10-04106T T3)Anchor Mapping Report dated November 24,2010
o FDH Engineering, Inc. (Project No. 11-05129E S2) Modification Drawings for a 152' Guyed Tower dated September
9,2011
o SBA Network Services, Inc.
The basic design wind speed per the ANSI/TIA-222-G standard is 100 mph without ice and 40 mph with V radial ice. Ice is
considered to increase in thickness with height. Furthermore,this tower has been analyzed as a class II structure in Exposure
category C with topographical factor 1.
Conclusions
With the existing and proposed antennas from Sprint in place at 130 ft, the tower meets the requirements of the ANSI/TIA-
222-G standard provided the Recommendations listed below are satisfied. Furthermore, provided the foundations were
modified per Sterling Engineering's modification drawings (see Sterling Project No. 061-575) and FDH Engineering, Inc.
modification drawings (see FDH Project No. 11-05129E S2), the foundations should have the necessary capacity to support
the existing and proposed loading. For a more detailed description of the analysis of the tower,see the Results section of this
report.
Our structural analysis has been performed assuming all information provided to FDH Engineering, Inc. is accurate (i.e., the
steel data, tower layout, existing antenna loading, and proposed antenna loading) and that the tower has been properly
erected and maintained per the original design drawings.
Recommendations
To ensure the requirements of the ANSIITIA-222-G standard are met with the existing and proposed loading in place,we have
the following recommendations:
1. Coax lines must be installed as shown in Figure 1.
2. The proposed RRUs and combiners should be installed directly behind the proposed panel antennas.
3. The proposed ODUs should be installed directly behind the proposed dishes.
4. Modifications per FDH Engineering, Inc. (Project No. 11-05129E S2) Modification Drawings for a 152' Guyed Tower
must be installed prior to the installation of the proposed loading for this analysis to be valid.
DocumenlNo. ENG-RPT-503S Revision Date:01108/09 3
Structural Analysis Report
SBA Network Services,Inc.
SBA Site ID:MA01085-A
November 30,2011
APPURTENANCE LISTING
The proposed and existing antennas with their corresponding cables/coax lines are shown in Table 1. If the actual layout
determined in the field deviates from this layout, FDH Engineering, Inc. should be contacted to perform a revised analysis.
Table 1—Appurtenance Loading
Existing Loading:
159.5 (1)7.75'x1.7"eOmni --- --- 154.6 Direct Mount on Ladder
159.2 (1)Scala OGB9-900KOmni (1)1-114" Arch 151.2 (1)Pipe Mount
5'x2.4"s
158.2 (1)7'-10"x0.93'e Omni (1)112' --- 161,2 (1)Pipe Mount
5'x1.88°0
144 (3)Andrew VHLP2.5 Dishes (4)1/2,
1 Andrew VHLPI Dish Clearwire 140 (3)Standoffs
140 (3)Argus LLPC310R w/Mount Pipes (3)7/8'
3 Samsung 2.5 GHz RRHs
1302 (6)RFS APXV86-906513-C wl Mount Pipes 130.4
(6)1-518" Sprint 129.6 (3)10'T-Frames
(6)Decibel DB950F65T2E-M wl Mount Pipes
128.9
124 (1)11'x125"o Omni (1)1/2° WBZ
(6)Kathrein 800-10121 wl Mount Pipes
(3)Kathrein 800-10766 w/Mount Pipes (12)1-518"
(3)CSS DUO1417-868-00 w/Mount Pipes (1)318° 119,1 (3)12.6'T-Frames
120 (12)Powenvave LGP21401 TMAs (2)DC Cables New Lingular
(6)Ericsson RRUSii RRUs (1)Fiber Cable
(1)Raycep DC6AB-60-18-8F Surge Arrestor (1)3'Conduit
1 PCTEL TMG-HR-26N GPS
(3)12'Lightweight T-
100 (12)Swedcom SE 9012 (12)1-518" Verizon 100 Frames
GAh=19.83 112
99.9 (1)16"x12"x8"Junction Box --- --- 97.5 (1)1325'Plafform
vd Rails
62.22 1)Trimble 23620-20 GPS 1 112" Sprint 61.25 (1)32"Standoff
55.5 1 Channel Master 1.210-1 Dish (1)114" Arch 54.75 (1)2'Standoff
1. See Figure 1 for coax location,
2. Sprint's existing loading at 130'and 62.2'W11 be removed prior to the installation of the proposed loading.
Proposed Loading:
(6)76'x 14"x 7"Panels w/Mount Pipes 130.4
(12)24"x 14°x 7"RRUs
(12)12"x W x 2°Combiners (4)Hybrid Cables
130 (3)24"x 14'x 7"Filters (2)1�. Sprint 129.6 (3)10'T-Frames
(2)26"MW Dishes
2 ODUs
1 GPS Antenna 128.9
Document No. ENG-RPT-503S Revision Date:01/08/09 4
Structural Analysis Report
SBA Network Services,Inc.
SBA Site ID:MA01085-A
November 30,2011
(12)1-518-FUTURE COAX
FOR VERIZON 70100'
CLIMBING LADDER W/
SAFETY CABLE
(4)PROPOSED HYBRID CABLES
FOR SPRINT TO 1ED
(6)15!8"COAX TO BE REMOVED
(1)ir7'EXISTING COAX (12)1-U8'EXISTING COAX
70151.7(DEAD) N EXISTING COAX
FOR
FOR NEW CINGULAft TO 119.1'
(7)1 114- C
FORARCH
T075OAX •• O
FOR 71.7 • 00
(1)FUTURE FIBER CABLE
(1)1r2-EXISTING COAX �• •
� ®
OO OOO O�
(1)FUTURE ONDUI
(2)1/ RP (2)FUTURE DC CABLES
FOR SPRINT TO 139 FOR NEWLINGULAR
719.1'
(1)1YEXISTING COAX ®
FORWBZTO � ®® OO
}f
(1)1/4"EXISTING COAX J
FOR ARCH TO 54,76 (3)7rZ FUTURE COAX
FUTURE COAX
FORC
FOR LEAft1MRE TO 144'8 14tl
• =PROPOSED
=FUTURE
O =EXISTING
Figure 1—Coax Layout
Document No. ENG-RPT-503S Revision Date:01108/09 5
Structural Analysis Report
SBA Network Services,Inc.
SBA Site ID:MA01085-A
November 30,2011
RESULTS
The following yield strength of steel for individual members was used for analysis:
Table 2•Material Strength
YieldMember Type i � Stronnth
Legs 50 ksi
Diagonals 36 ksi
Horizontals 36 ksi
Table 3 displays the summary of the ratio (as a percentage)of force in the member to their capacities. Values greater than
100% indicate locations where the maximum force in the member exceeds its capacity. Note., Capacities up to 105% are
considered acceptable. Table 4 displays the maximum foundation reactions. Table 5 displays the maximum tilt and twist at
service wind speeds(proposed dishes only).
If the assumptions outlined in this report differ from actual field conditions, FDH Engineering, Inc. should be contacted to
perform a revised analysis. Furthermore, as no information pertaining to the allowable twist and sway requirements for the
existing or proposed appurtenances was provided, deflection and rotation were not taken into consideration when performing
this analysis.
See the Appendix for detailed modeling information
Table 3-Summary of Working Percentage of Structural Components
T1 152-146 L 132.5x.276 GR 18.0 Pass
Diagonal L2 VW 112x7116 12.1 Pass
Horizontal L3 1/2x4x7/16 5.4 Pass
To Girt L31/2x4x7/16 0.5 Pass
Bottom Girt L31/2x4x7/16 3.6 Pass
Gu A 151.5 61.185 d 3/4 34.4 Pass
Guy B@151.6 61.185 d 314 34.2 Pass
Guy C@161,5 61.185 d 3/4 34.5 Pass
Torque Arm To151.5 L3x3x1/4 14.9 Pass
Torque km Bottom 151.5 L3x3x1/4 40.1 Pass
T2 146-136 Leg P24.30 GR 51.2 Pass
Diagonal L1 3141 3/4x3/16 78.3 Pass
81.1 b
Horizontal P2x.218 1.9 Pass
Top Girt 132018 6.8 Pass
Bottom Girt P2x218 3.7 Pass
T3 136-126 Leg 1324.30 GR 70.0 Pass
Diagonal L1314x13/40% 58.5 Pass
Horizontal P2x.218 3.1 Pass
Top Girt 132x M 3.5 Pass
Bottom Girt P2x.218 0.9 Pass
T4 126-116 Leg 1324.30 GR 71.8 Pass
Diagonal Li 3/4xl 3143/16 46.6 Pass
Horizontal 132xM 4.1 Pass
Top Girt P2x.218 0.7 Pass
Bottom Girt 32x.218 2.9 Pass
DocumenlNo. ENG-RPT-503S Revision Dale:01/08109 6
Structural Analysis Report
SBA Network Services,Inc.
SBA Site ID:MA01085-A
November 30,2011
T5
116-106 L P2x0.30 GR 68.2 Pass
Diagonal L1 3/4x1 314x3116 63.9 Pass
Horizontal P2x.218 2.5 Pass
To Girt P2x.218 3.5 Pass
Bottom Girl P2x.218 4.1 Pass
T6 106-96 L P2x0.30 GR 48.8 Pass
Diagonal L13/4xl3/4x3/16 97A Pass
99.0 b
Horizontal P2x.218 2.4 Pass
Top Girt P2x.218 4.4 Pass
Bottom Girl P2x.218 13.0 Pass
Guy A@96.1667 61.718 d 3/4 46.4 Pass
Guy B@96,1667 61.718 d 3/4 47.0 Pass
Guy C@96.1667 61.718 d 3/4 46.6 Pass
Torque Arm To96.1667 L3x3xl/4 23.3 Pass
Torque Arm Bottom96.1667 1-3004 41.3 Pass
T7 96-90 Leg P2.5x.276 GR 49.4 Pass
Diagonal L21/2x2MOM 18.3 Pass
Horizontal L3 1/2x4x7/16 12.6 Pass
Top Girt L31/2x4x7/16 4.8 Pass
Bottom Girt L31/2xW/16 6.8 Pass
T8 90-80 Leg P2x0.30 GR 60.8 Pass
Diagonal Li 3141 MOM 37.9 Pass
Horizontal P2x.218 2.1 Pass
Top Girt P2x.218 3.5 Pass
Bottom Girt P2OM 1.4 Pass
T9 80-70 Leg P2x0.30 GR 63.5 Pass
Diagonal L13/4x13/4x3/16 25.8 Pass
Horizontal P2x.218 2.2 Pass
Top Girt P2x.218 1.7 Pass
Bottom Girt P2x.218 1.0 Pass
T10 70-60 Leg P2x0.30 GR 65.0 Pass
Diagonal LI3/4x13/4x3116 22.7 Pass
Horizontal P2x.218 2.3 Pass
Top Girt P2x.218 1.0 Pass
Bottom Girt P2x.218 1.1 Pass
T11 60-50 Leg P2x0.30 GR 66.8 Pass
Diagonal L13/4xl3/4x3/16 35.2 Pass
Horizontal P2x.218 2.3 Pass
Top Girt P2x.218 1.9 Pass
Bottom Girt P2x.218 1.8 Pass
T12 50-40 Leg P2x0.30 GR 75.8 Pass
Diagonal L1314x1314x3/16 43.3 Pass
Horizontal P2x.218 2.6 Pass
Top Girt P2x.218 2.6 Pass
Bottom Girl P2x.218 7.7 Pass
Guy A@40.1667 112 32.7 Pass
Guy B 40.1667 1/2 32.8 Pass
Guy C@40.1667 1/2 32.6 Pass
T13 40-30 Leg P2x0.30 GR 73.1 Pass
Diagonal L13/4xl3/4x3/16 25.6 Pass
Horizontal P2x.218 2.7 Pass
Top Girt P2x.218 3.1 Pass
Bottom Girt P2x.218 1.3 Pass
T14 30-20 Leg P2x0.30 GR 74.8 Pass
Diagonal L13/4xl3/4x3/16 16.1 Pass
Horizontal P2x.218 2.7 Pass
Document No. ENG-RPT-503S Revision Date:01/08/09 7
Structural Analysis Report
SBA Network Services,Inc.
SBA Site ID:MA01085-A
November 30,2011
Top Girl P2x.218 1.1 Pass
Bottom Girt P2x.218 1.1 Pass
T15 20-10 Leg P20.30 GR 77.1 Pass
Diagonal L13/4xl3/4x3/16 19.9 Pass
Horizontal P2018 2.8 Pass
Top Girt P2x.218 1.1 Pass
Bottom Girt P2x.218 1.3 Pass
T16 10-0 Leg P2x0.30 GR 79.8 1 Pass
Diagonal L13/4x13/4x3/16 25.0 Pass
Horizontal P2x.218 2.9 Pass
Top Girt P2x.218 1.3 Pass
Bottom Gin 132018 6.6 Pass
'Diagonal bolls assumed to be grade A325X.
Table 4—Maximum Base Reactions
ModificationCurrent Analysis* De
Reaction Horizontal Vertical Moment Horizontal Vertical Moment
Tower Base 2k 105k 50 k-ft 40 k 274 k 111 k-fl
Inner Anchor-* 22k 24k --
Outer Anchor 17k 17k --- 28k 28k ---
'Current analysis reactors are within an allowable factor of 1.35 when the orglnai design reactions are based on an allowable stress design per ANS11714-222-G.
"Modficadon design reactions capacities determined by Sterling Engineering and Design Group,Ltd.(Report No.061-697)Structural Analysis Report dated February 17,
2005.
"'Inner Anchor determined adequate per independent analysis.
Table 5—Maximum Antenna Rotations at Service Wind Speed(Proposed Dishes Only)
.-, M.
130 26"MW Dish 0.0576 0.0190
"Tilt and twistvalues to be reviewed by carrier.
Document No. ENG-RPT-503S Revision Date:01/08109 8
Structural Analysis Report
SBA Network Services,Inc.
SBA Site ID:MA01085-A
November 30,2011
GENERAL COMMENTS
This engineering analysis is based upon the theoretical capacity of the structure. It is not a condition assessment of the tower
and its foundation. It is the responsibility of SBA Network Services, Inc. to verify that the tower modeled and analyzed is the
correct structure(with accurate antenna loading information)modeled. If there are substantial modifications to be made or the
assumptions made in this analysis are not accurate, FDH Engineering, Inc. should be notified immediately to perform a
revised analysis.
LIMITATIONS
All opinions and conclusions are considered accurate to a reasonable degree of engineering certainty based upon the
evidence available at the time of this report. All opinions and conclusions are subject to revision based upon receipt of new or
additional/updated information. All services are provided exercising a level of care and diligence equivalent to the standard
and care of our profession. No other warranty or guarantee, expressed or implied, is offered. Our services are confidential in
nature and we will not release this report to any other party without the client's consent. The use of this engineering work is
limited to the express purpose for which it was commissioned and it may not be reused, copied, or distributed for any other
purpose without the written consent of FDH Engineering, Inc.
Document No. ENG-RPT-5038 Revision Date:01108109 9
Structural Analysis Report
SBA Network Services,Inc.
SBA Site ID:MA01085-A
November 30,2011
APPENDIX
Document No. ENG-RPT-503S Revision Date:01/08/09 10
a=14sm« R=145.00«
n•'e.d3 eK ao n
152 Oft
ry
C G
146_0 fl 5s�
1&aft / R-65AOf�R=85.00«
a
_ 1
1 R=145.00 ft R=145.00 R
Bort PLAN
u R m ry m
116.0 ft DESIGNED APPURTENANCE LOADING
TYPE I ELEVATION TYPE ELEVATION
7.7Vx1.7-.1 151.8 (2)RRU-EOcssm RRUS11(Nery 119.1
L'ghWN Rad 1548 L'npvk4
108Ofl 5X24'Pre Mount(ArN) 151.2 (2)Pau-E,ksson RRU -li QN. 119.1
T-10XOa3'am0 151.2 Cmgokll
5XL68'P4e Mount Ill.2 Ra1caP DC848-60.188F(Nan 118.1
CG849&K(ku ) 151.2 Perin.an
LLPC310Rw/mount pipe(Ckam%ae) 140 P)LGP2101T CN.0 118.1
see ft LLPC310R w/mwn(Ppe(Ckam'de)lu 01 140 (Q LGPz1401T(ABZ) C6gulap 119.1
RRHU 2(CleamGe) 140 11'x135'OmN(Po92) 118.1
C ¢ U O O F5 RRH IMd(Geamlre) 140 (Nen Wm h SN-1
-10121 W 6 M Pre 119.1
90.0 ft RR)1 Und(CleamVe) 140
eW01417-68600 wMwnt Pre Men 118.1
S✓Je Mounl SlandoR(1)(Ckamfre) 140 Cingukr)
€ a� SideM nl Slan ff(1)a3eamire) 140 (2)Kebseh 800.10121 wt Mown Pre 119.1
q Site Mount st.n ff(1)(Ckam4e) 140 (Nen WgNar)
�. LLP0310Rw/mwnt p'pa(Ckamva) 140 O00141786600 w'Mwnl Pre(Nen k117
&ofl VHLP25(Ckam s) 140 Ckgukr)
s (2)KaWeh Nolen 21 w/Mount Pre
WL-P2.$(Ckamie) 140
�7 VHlP25(Gearcf�e) 140 9+ex CkgNa4
F ¢ VHLPt(Ckamve) 140 chg1 7.888-00 mNaunt Pqe(Nen
Cng k
70a ft (spm-) 14'x7'Panelwl Mount Pipe 1w4 (N.MWeh 00-10]68 w/MounlPpe
ManL vl.14014
24'x14'xT F-RRU MO 130.4 (d)LGP21401 TMA(Ren C'rgular)
(4)24'x 14'xT RRU(SpNt) 130.4 (3)125'T-Ramzs(Nen CBgula9
(4)IT x6-x 2'Contlxner(Sprr,9 iie'l (4)Lon 14 Of TMA(Nen CNula0
Pg-M m(SPA") 130.4 11'x 1�5 Omni(W in&ofl ODU R�(SpI) 130.4 Su-&b tSOMff(1)(WBZ)
M.Mh(WrA) 130.4 (3)LgOWeght I T-F2mes(V Azon) IN
(3)IV T-Fremes(Spdn9 INS (d)SC 9012 DINw7/ .lPye IN
(2)78'x14'x7'Paneiwlebnt Rpe 1298 M;U-)
ALL REACTIONS (sw'm0 (4)809012-DINwRMunl Pye IN
waft AREFACTORED 24'x14'xr"W(6pM0 129.6 (waz.)
(4)24'x14'x7'RRU(WN) Ina (4)509012-DIN&Anton Pqe 100
2 ry m MAX.CORNER REAC(4)1 r x 6-x c0mtlnef(sprin0 129.6 Neruen)
F L 2{ N P'gaM m(SPMO 129.6 Toryue Arm Ratfolm(lwqueArrn 97.5
E 3 ® a DOWN: 73K con Ramo(Sprin Ino mt1 )
L� 40afl UPLIFT., 0K 28•pph(SpRM) 1288 ToryuePsm Plaltoml(TaquePzm 97.5
SHEAR: 5K (2)78'x 14'xTPanelwl Moun(Rpa 128.9 Ra1wm>
(S�) 1fiXf2X8'Box 97.5
= AXIAL 24'x 14'x 7'Rltef(Spdrq 128.9 To 1q 0 ,m Rzlfwm(r queNm 96
9 209K (4)24'x 14'x]'RRU(SpMp 128.9 PhOortn)
seaft (4)12'x 6'x 2'CoNne,(Np a 1289 TwqueAm,Ralfwm(TorqueMn 96
Puff.)
SHEAR MOMEN cas(spM9 ue.e I3 l r 1e,(km) 5475
OK�_ kip-ft 9+xc 80lar) wlMo,a,tPre 11e.1 r&araoR(acn) u.]s
Kativa.&0.10766 wl Mount Ppa In,I
no ft TORQUE O kip-ft 94enc,,u�m
40 mph WIND-1.0000 in IC (2)R au-Ed",.RRUstl Men 119.1
AXIAL
10I5K SYMBOL LIST
mo
ft J , MARK SIZE MARK SIZE
$HEAR MOMEN A P2 5x276 C L31tlxWll$
2 K�_- 50 kip-ft a L 1.1]2x7116
TORQUE O kippft MATERIAL STRENGTH
Sort REACTIONS-f00mph WIN ASi2-w GRADE F Fu GRADE F Fu
&Lsl 65 ksi A38 38 W 58 kst
e
" - g K=65.uuTOWER DESIGN NOTES
o E - 1. Tower Is located in Essex County,Massachusetts.
o m a 3 2. Tower designed for Exposure C to the TIA-222-G Standard,
3. Tower designed for a 100 mph basic wind in accordance with the TIA-222-G Standard.
4. Tower is also designed fora 40 mph basic wind with 1.00 in ice.Ice Is considered to increase
in lh',-k. ¢wilh hafnht
m FDHEnglneering,Inc. 'North Andover,MA01085-A
2730 Rowland Road P10•ec1iN-05129E S3
13Y'°11° Raleigh, North Carolina Orem SBA Network Services I Drervn IT.SMN Aped:
iaxerMaysls Phone:(919)755-1012 cede:TIA-222-G DMe:11/30111 Vie' NTS
FAX: 919 755-1031 PaN: DM No.E-1