HomeMy WebLinkAboutAPPROVED License Sub 6_DUNE WALK_236913_Structural Analysis_2021-02-084907 NW 43rd Street, Suite D, Gainesville, FL 32606
Structural Evaluation of Existing Rooftop Equipment Platform & Antenna Frame
Verizon Wireless Cell Site Platform & Antenna Mount “Pass-Fail” Analysis
Site located at:
Dune Walk
7370 South Ocean Drive
Jensen Beach, FL 34957
December 14, 2020
Designed in accordance with the requirements of the 7th Edition (2020) Florida Building Code, Wind
Loading requirements within Chapter 16.
Analysis Prepared for:
Tower Engineering Professionals, Inc.
Matthew K. Lackey, PE
3401 St. Vardell Lane
Suite A
Charlotte, NC 28217
Analysis Prepared by:
Waylon Francis, EI #EI1100019320
Analysis Reviewed by:
John Wayne Mishoe, PhD PE #PE25349
Stephen Matthew Belser, PE #PE67514
JWM Engineering, LLC #CA28619
Signature Date
Seal:
236913 Dune Walk Platform & Antenna Frame Pass-Fail Report 12/14/2020 1 of 65
12/14/2020
4907 NW 43rd Street, Suite D, Gainesville, FL 32606
Table of Contents Page
Structural Report 3
TEP Lease Exhibit 6
TEP Antenna Frame Mapping 7
Wind Loads – Frame and Equipment 11
Wind Loads - Antennas 16
RISA 3D Exhibits 18
RISA 3D Load Distribution 32
RISA Connector Check 57
Connector & Weld Design Checks 61
Building Influence Check (Requires Verification) 65
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4907 NW 43rd Street, Suite D, Gainesville, FL 32606
Project Scope of Work and General Conditions
The scope of work for this part of the project is to structurally evaluate an existing elevated
equipment platform & antenna frame and its ability to support the installation of a new
outdoor equipment cabinet, antennas, and associated equipment. The proposed equipment
will be replacements for the existing equipment that currently occupy the platform. The
following evaluations are based upon loading requirements of the TIA-222-H standard and the
2020 Florida Building Code (FBC). This is a Verizon Wireless site located at 7370 South Ocean
Drive, Jensen Beach, Florida, in St. Lucie County.
The photo below shows the platform in its existing conditions prior to equipment addition:
Figure 1- Existing Site
Structural Analysis
The analysis is based upon the following documentation provided to JWME from TEP:
1. Lease Exhibit of the proposed equipment layout, prepared by TEP, dated 12 -07-2020.
2. Antenna mount mapping data collected by Maser Consulting P.A dated, 8-27-2020.
236913 Dune Walk Platform & Antenna Frame Pass-Fail Report 12/14/2020 3 of 65
4907 NW 43rd Street, Suite D, Gainesville, FL 32606
3. Proposed Verizon RFDS for the Dune Walk site dated, 11-9-2020.
4. Previous Pass-Fail Analysis of the Dune Walk site completed by JWME on 07-28-2016.
5. Proposed cabinet and antenna specifications provided by TEP.
JWME used the best information available to analyze the impact on the building and to
determine the required loading. The proposed equipment information was provided by Tower
Engineering Professional, Inc. (TEP) and the data used to determine the required platform and
antenna frame loads.
Loads considered in the analysis include the following:
1. Wind loads were computed using ASCE 7-16 methods assuming a wind speed of 163
MPH, Building Category II, Exposure D.
2. Dead weight, live loads and associated wind loads were included based upon code
minimum requirements for the roof area.
3. The table below lists the proposed equipment being added to frame and the equipment
to remain:
Mount
Elevation
(ft)
Equipment
Elevation (ft) Quantity Manufacture Model Status
81.88 88.00
3 - VZE01
Added
3 Ericsson 4449
3 Ericsson 8843
2 Raycap RHSDC-6627-PF-48
1 CUBE Large
Support Cabinet CUBE-SS4B228LX1
6 JMA Wireless X7CQAP-665-V Retained 6 JMA Wireless DBC-67C-U-2SF
4. Other known dead weights, such as grating weights, were also added.
The existing platform stud columns and associated base plate attachments were used to
support a penthouse shelter. The shelter was removed and replaced with the existing platform.
The total existing loading is considerably less on the existing stud columns and underlining
building concrete columns than was originally placed when first constructed.
Because this is an existing structure, no consideration was given to the continuous load path to
the foundation. No information was provided to JWME about the existing concrete column,
base plate size or connection method. A building influence of the concrete columns was
236913 Dune Walk Platform & Antenna Frame Pass-Fail Report 12/14/2020 4 of 65
4907 NW 43rd Street, Suite D, Gainesville, FL 32606
performed to verify the minimum size concrete column necessary to support the existing
platform loads with a maximum of 5% increase on overall loading in accordance with the 2020
Florida Building Code: Existing Building 707.2. The contractor must verify these assumptions
and contact engineering if the assumed concrete column size is smaller than the dimensions
used in the attached calculations. However, with this installation, the additional equipment it
not expected to change the overall loading of the structure.
Results of Analyses
With the assumptions listed in this report verified, t he equipment frame has been evaluated
and meets the minimum requirements of the 7th Edition (2020) FBC. The specifications are
provided by JWME in the attached calculations. This evaluation assumes the current structure
has been kept in good repair, code compliant and built in accordance with the record drawings.
The contractor must verify these assumption s and report to the engineer any discrepancies as it
may affect the results of this evaluation.
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FCC #
UNKNOWN
Tower Owner:
Site Name:
Site Number or ID:
Mapping Contractor:
Please Insert Sketches of the Antenna Mount
This antenna mapping form is the property of TES and under PATENT PENDING. The formation contained herein is considered confidential in nature and is to be used only for the specific customer it was intended for. Reproduction, transmission, publication, modification or disclosure by any method is prohibited except by express written permission of TES. All means and methods are the responsibility of the contractor and the work shall be compliant with ANSI/ASSE A 10.48, OSHA, FCC, FAA and other safety requirements that may apply. TES is not warrantying the usability of the safety climb as it must be assessed prior to each use in compliance with OSHA requirements.
Antenna Mount Mapping Form (PATENT PENDING)
DUNE WALK Mapping Date:08-27-2020
VZW: DUNE WALK Tower Type:Other
VZW:423 Tower Height (Ft.):79
RKS Design & Engineering LLC.Mount Elevation (Ft.):90.5
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Please Insert Sketches of the Antenna Mount, cont'd236913 Dune Walk Platform & Antenna Frame Pass-Fail Report 12/14/2020 8 of 65
Please Insert Sketches of the Antenna Mount, cont'd
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Please Insert Sketches of the Antenna Mount, cont'd
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Verizon Site Name: Dune WalkVerizon Site #2369137370 South Ocean DriveJensen Beach, FL 34957St. Lucie County
12/10/2020Equipment CabinetsWind Load Calculations
EQUIPMENT CABINET WIND LOAD CALCULATIONS
ASCE 7-10 (CH 29)
Unit Definition LEGEND
INPUT CALCUATIONS RESULTS Define Miscellaneous Unit Variables.
plf lbf
ft:=psf lbf
ft2:=pcf lbf
ft3:=kip 1000lbf:=ksi kip
in2:=SF ft
2:=CF ft
3:=
Site Location
Verizon Site Name: Dune WalkVerizon Site #2369137370 South Ocean DriveJensen Beach, FL 34957St. Lucie County
Codes
Design Codes: 7th Edition (2020) Florida Building CodeReference Codes: ASCE 7-16, ACI 318-14 and AISC Steel Construction Manual, 14th Ed.
Assumptions:
Assume cabinets and frame are analyzed using Ch. 29 Chimneys, Tanks, Rooftop Equipment, & SimilarStructures Method as modified by FBC 2020 CH 16 Section 1620Assume cabinets are only carried by primary beams.Assume loading from cabinets is equivalent to point load at the center of each cabinet on each beam.
Verizon Cabinet Information
Modular Cell Cabinets
CS 4:=*i 0 CS 1-( )..:=*j 0 CS 2-( )..:=*
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Verizon Site Name: Dune WalkVerizon Site #2369137370 South Ocean DriveJensen Beach, FL 34957St. Lucie County
12/10/2020Equipment CabinetsWind Load Calculations
Code "Cabinet Type" Lo Wo Ho lbs CSTotal number of cabinets
CABINETS
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
"EBRE Battery Cabinet"
"BTS Cabinet - Mod 4.0B"
"CUBE Cabinet Large SS Series"
"Generator-trans"
"Emerson Microwave"
"Lucent Battery Cabinet"
"LTE-ODE 6201 Ericsson"
"SSC-Delta-Med. (ESOA) "
"FCOA-Nokia Siemens"
"10kw Fuel Cell-black hand"
"15kw Fuel Cell-black hand"
"Storage - Large - Fuel Cell"
"Storage - Med - Fuel Cell"
"LTE ODE 6201 w BRAM Bat."
"MOD 4.0B w BRAM Bat."
"(2) SSC-Small-Stacked "
"(1) SSC - Small"
"Generac 50kW NG"
"Generac 50kW NG-trans"
"RBA72 Cabinet"
"Back Fibre Cabinet"
"LP Tank"
"LP Tank Trans"
36
35.4
32
72
30
31
36
29.5
30.3
26.2
26.2
39
27
36
35.4
26
26
40
92.9
30
30
37
120
38
40
32
30
31
30
36
34.1
30.3
43.2
43.2
39
39
36
40
26.75
26.75
92.9
40
39
18
120
37
78
72
84
56
98
60
72
54
61
72
94
72
72
88
88
74
37
71.2
71.2
72
36
37
37
4960
1424
1915
2750
1200
3000
715
1500
789
974
1461
1353
929
1600
2308
1574
787
2750
2750
3000
1000
940
940
21
21
60
30
21
21
21
20.3
21
21
21
21
21
21
21
21
21
35.5
85
21
14
30
100
:=
Rc rows CABINETS() 23=:=
ii 0 Rc 1-..:=
iii 0 1..:=
Cabcodeii iii,
CABINETSii iii,
:=
Chose your Cabinets based off the Cabinet Code
Cabinet Type &Layout for Site Cabinet Locationon Beams
SITE
0
1
1
2
:=LOCATION
2.04
6.17
9.17
13.5
ft:=
Equipment Name
EquipVei CABINETSSITEi 1,
:=EquipVe
"EBRE Battery Cabinet"
"BTS Cabinet - Mod 4.0B"
"BTS Cabinet - Mod 4.0B"
"CUBE Cabinet Large SS Series"
=
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Verizon Site Name: Dune WalkVerizon Site #2369137370 South Ocean DriveJensen Beach, FL 34957St. Lucie County
12/10/2020Equipment CabinetsWind Load Calculations
HIDDEN AREA: Calculations
Building Information
Lbuilding.normal.beam 109ft:=Depth of building perpendicular to cabinets support beams
Lbuilding.parallel.beam 225ft:=Depth of building parallel to cabinets support beams
BuildingTop.AGL 90ft:=Height of Building above grade
hcab.clear 1.5ft:=Vertical distance from roof top to bottom of cabinet
Lstructure 20ft:=Width of Structure perpendicular to equipment cabinet face
Select Building Exposure Category as define in ASCE 7 or FBC
Beamspacing 2.5ft:=Spacing Between Beams
Beambf 8in:=Flange Width of Beams
V 163:=Ultimate Wind Speed
HIDDEN AREA: Calculations
Loads
Load Path
Cabinet vertical loads carried by beams to girders to columns to building frame.Frame vertical loads carried by beams to girders to columns to building frame.
Determine wind load on Cabinets and Frame
Assume Rooftop Structures and Equipment For Buildings w/ Height <= 60 ft (ASCE 7-16 29.5.2) and Height > 60 ft (Eq29.5.1.
HIDDEN AREA: Calculations SUMMARY OF CABINET REACTIONS
DEAD LOADS
BEAM #1 BEAM #2 EQUIPMENT
RAy.DLi
2480
712
712
957.5
lbf=RBy.DLi
2480
712
712
957.5
lbf=EquipVei
"EBRE Battery Cabinet"
"BTS Cabinet - Mod 4.0B"
"BTS Cabinet - Mod 4.0B"
"CUBE Cabinet Large SS Series"
=
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Verizon Site Name: Dune WalkVerizon Site #2369137370 South Ocean DriveJensen Beach, FL 34957St. Lucie County
12/10/2020Equipment CabinetsWind Load Calculations
WIND LOADS VERTICAL REACTIONS (CASE A AND B)
EQUIPMENT UPLIFT DOWN FORCE
EquipVei
"EBRE Battery Cabinet"
"BTS Cabinet - Mod 4.0B"
"BTS Cabinet - Mod 4.0B"
"CUBE Cabinet Large SS Series"
=RAy.WLi
3564.2
3108
3108
4069.7
lbf=RBy.WLi
2329.8-
1830.4-
1830.4-
3145.7-
lbf=
LATERAL REACTIONS (CASE A AND B)EQUIPMENT
EquipVe
"EBRE Battery Cabinet"
"BTS Cabinet - Mod 4.0B"
"BTS Cabinet - Mod 4.0B"
"CUBE Cabinet Large SS Series"
=RAx.WLi
1435.7-
1303.2-
1303.2-
1374.4-
lbf=RBx.WLi
1435.7-
1303.2-
1303.2-
1374.4-
lbf=
Horizontal(Load Case C&D)Moment Reactions(Load Case C&D)
Rzmax 1515.5 lbf=Mmax 4925.3 lbf ft=
HIDDEN AREA: Calculations
Distributed Wind Loading on frame members
Beamd 10in:=Beam Depth
Beam2d 6in:=Beam 2 Depth
Girderd 10in:=Girder Depth
Columnd 8in:=Column Width
Columnw 6in:=Column Depth
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Verizon Site Name: Dune WalkVerizon Site #2369137370 South Ocean DriveJensen Beach, FL 34957St. Lucie County
12/10/2020Equipment CabinetsWind Load Calculations
BeamPLF max Pz Beam d( )
122.7 plf=:=Distributed Wind Load along Beam
Beam2PLF max Pz Beam2d( )
73.6 plf=:=Distributed Wind Load along Beam 2
GirderPLF max Pz Girderd( )
122.7 plf=:=Distributed Wind Load along Girder
Columnd.plf max Pz Columnd()98.2 plf=:=Distributed Wind Load along Column (Depth side)
Columnw.pdf max Pz Columnw()73.6 plf=:=Distributed Wind Load along Column (Width side)
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DUNE WALKVerizon Site #2369137370 South OceanJensen Beach, FL 34957
d}Connector Analysis
DUNE WALK CONNECTOR/WELD CHECKS - VERIZON #236913
NOTE: Unity Codes (UC) < or = 1 pass. UC > 1 FAIL LEGEND UNIT DEFINITION INPUT CALCUATIONS RESULTS
plf 1
lbf
ft=psf 1
lbf
ft2=pcf 1
lbf
ft3=kip 1 10
3lbf=ksi 1
kip
in2=SF ft
2:=CF ft
3:=
Beam to Girder & Girder to Column Connection Check
Girder to Column is simple connection
i 2:=Total Number of Members
n 0 i 1-..:=
Member Dimensions
Member0 "W10x33":=Label 0 "Girder-1":=b f 0 8in:=d 0 9.73in:=tf 0 0.435in:=tw0 0.29in:=Sx0 35in3:=
Member1 "W10x33":=Label 1 "Beam-2":=b f 1 8in:=d 1 9.73in:=tf 1 0.435in:=tw1 0.29in:=Sx1 35in3:=
fy 50ksi:=Yield Strength
fu 65ksi:=Ultimate Strength
Shear and Tension Values Per Member from RISA Model
Label "Girder-1"
"Beam-2"
=Ty 0
6268
lbf:=Vz 5073
7040
lbf:=Vx 6272
14908
lbf:=
Torsion and Moment Values Per Member from RISA Model
Label "Girder-1"
"Beam-2"
=My 6224
5248
lbfft:=Mz 8165
47141
lbf ft:=MT 48
0
lbf ft:=
Bolt Information
Bolt0 "A325X":=
dbolt .875
.875
in:=Bolt Diameter Fnv.b 68ksi:=Nominal Shear Strength
Numbolts 4
4
:=Assumed number of bolts Fnt.b 90ksi:=Nominal Tension Strength
Hidden Area: Calculations
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DUNE WALKVerizon Site #2369137370 South OceanJensen Beach, FL 34957
d}Connector Analysis
X2 5.125
5
in:=X1 5.125
5
in:=
Hidden Area: Calculations
3.1 0.75:=LRFD Factor
Shear capacity (1) 3/4" A325-X Bolt in single shear(J3-1, AISC)Shearbolt 3.1 Fnv.bAb30.7
30.7
kip=:=
Tension capacity of (1) 3/4" A325-X Bolt in tension(J3-1, AISC) Tensionbolt 3.1 Fnt.bAb40.6
40.6
kip=:=
UCshear
Shear perbolt
Shear bolt
0.1
0.1
=:=Unity Code for Shear
UCtension
Tensionperbolt
Tensionbolt
0.2
0.3
=:=Unity Code for Tension
3.2 0.75:=LRFD (J3-3b AISC)
Fnt.J3.3bn 1.3Fnt.b
Fnt.b
3.1 Fnv.b
Shear n
Ab n Numboltsn-... ksi=:=
Fntn Fnt.J3.3b Fnt.J3.3bn Fnt.bif
Fnt.b otherwise
j nfor ... ksi=:=
Rn.J3.2n 3.2 FntAb... kip=:=Rn.J3.2 81.2
81.2
kip=Combined Tension and Shear inBearing Type Connection (J3-2, AISC)
UCJ.3.2
Ty
Rn.J3.2
0.0
0.1
=:=Unity Code of Available Tensile Strength ofBolt suject to combined tension and shear
Strength Reduction for Members with Holes in Tension Flange (F13 AISC 15th Ed.)
Afn tf b f
Numbolts0
2 dbolt 1
16 in+tf-5.329 in
2=:=
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DUNE WALKVerizon Site #2369137370 South OceanJensen Beach, FL 34957
d}Connector Analysis
Afg tf b f6.96 in
2=:=
I13check "Limit State DNA" fu Afnfy Afgif
"Check New Mn" otherwise
"Check New Mn"=:=
I13check "Check New Mn"=
Mn
Afn
Afg fuSx0145.15 kip ft=:=
TensionMax
M n
0.1
0.1
=
Base Plate Antenna Column Weld Check
Column0 "5.0X PIPE":=
ASTM A500 B
Fy.c 35ksi:=tc 0.349in:=Column Wall Thickness
Fu.c 60ksi:=d c 5.56in:=Column Depth
pc d c 17.467 in=:=Permeter of Column
lweld p c 17.467 in=:=Length of Weld
Weld Thicknesstweld6
16 in:=
# of 16th of inch in weldDweldtweld16
in6=:=
Fbolt 2671lbf:=Tension in one bolt From RISA BASE
Vz.c 6332lbf:=Shear Force on Weld (Z axis from RISA)
Vx.c 522lbf:=Shear Force on Weld (X axis from RISA)
Zshear Vz.c2 Vx.c2+6.353 kip=:=Vector Component of Shear Force on Weld
Mx.tension 6757lbf ft:=Moment on Weld X-Axis (From RISA)
My.tension 320lbf ft:=Moment on Weld Y-Axis (From RISA)
Hidden Area: Calculations
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DUNE WALKVerizon Site #2369137370 South OceanJensen Beach, FL 34957
d}Connector Analysis
Fexx 70ksi:=E70 Electrode
Hidden Area: Calculations
j2.4 0.75:=LRFD Factor
Rn.j2.4 j2.4 FnwAwe308.7
267.7
kip=:=Weld Strength Eq. J2-4
lmin.weld.req
Freq.weld
j2.4 Fnwlweld
0.3
0.4
in
16=:=Minimum weld Thickness
UC Rn.j2.4
Freq.weld
Rn.j2.4
0.1
0.1
=:=Unity Code
tweld.min 3.09 Dweld
Fu.c ksiin4.9 in
16=:=
tweld.min.check "OK" t weld.min tweldif
"weld to thin for connecting column" otherwise
"OK"=:=
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Verizon Site Name: Dune WalkVerizon Site #2369137370 South Ocean DriveJensen Beach, FL 34957St. Lucie County
12/10/2020Building Influence Check
BUILDING INFLUENCE CHECK ON EXISTING CONCRETE COLUMN
LEGEND Unit Definition INPUT CALCUATIONS RESULTS
Define Miscellaneous Unit Variables.
plf 1
lbf
ft=psf 1
lbf
ft2=pcf 1
lbf
ft3=kip 1 10
3lbf=ksi 1
kip
in2=SF ft
2:=CF ft
3:=
Site Location
Verizon Site Name: Dune WalkVerizon Site #2369137370 South Ocean DriveJensen Beach, FL 34957St. Lucie County
NOTES:
This mathcad sheet checks the influence of the imposed verticle load on an existing building concrete1.column axial axis per 2020 FBC:EB 707.2.
n 1:=Number of Columns Checked
i 0 n 1-..:=
Lcol 14( )in:=Length of Concrete Column
Wcol 14( )in:=Width of Concrete Column
HIDDEN AREA: Calculations
fc 3000psi:=Concrete Strength
frebar 60ksi:=Rebar Strength
Fy.max 14948( )lbf:=Maximum Vertical Load from RISA at Column, worst case load combination (LFRD Value)
10.2 0.65:=LFRD Factor
HIDDEN AREA: Calculations
Loadchecki
Fy.max i
Pn.10.2i
:=
Loadcheck 4.694( ) %=Percent Increase in of Load on Column's Capacity
HIDDEN AREA: Calculations
Result "Less than 5% increase in Column Capacity, no further analysis needed per 2020 FBC:EB 707.2."()=
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236913 Dune Walk Platform & Antenna Frame Pass-Fail Report 12/14/2020 65 of 65