HomeMy WebLinkAboutSTRUCTURAL CALCULATIONSU915
MORRISON HERSHFIELD
STRUCTURAL CALCULATIONS
Site Number: A2POO44C
Site Name: SBA SWAIN ROAD
Address: 1401 Swain Road
Fort Pierce, St. Lucie Co., FL 34947
Project#: TMB-054/7160009
MOUNT ANALYSIS— PASSING
F—Summary of Results
I Mount Components 158.8% 1
For
T-Mobile
Date: 9/27/16
Prepared By
Morrison Hershfield Corporation
1455 Lincoln Parkway, Suite 500
Atlanta, GA 30346
Phone: (770) 379-8500
Fax: (770) 379-8501
G. Lance Cooke, P.E.
(FL License No. 68787)
Senior Engineer
Certificate of Authorization # 8505
SCANNED
BY
St. Lucie Countv
C E C
�O
E
No 68787
11!� ST.A,TP OF .:'t/ Z
9 . U�
I" 1AM
L
%
Proj;ct #: TMB-054 / 7160009 1 V11A Date: 912712016
Site #: A2120044C MORRISON HERSHFIELD By. MK
1.0 INTRODUCTION
This is a 450-ft tall guyed tower. Existing and proposed antennas and equipment are installed on the
existing Connect -it #: VF13-3-96 Sector Mount.
Coordinates: Latitude 27.435806* N, Longitude 80.377639* W
The purpose of this mount analysis is to verify the structural integrity of the existing mount to support the
existing and proposed telecommunication equipment.
2.0 REFERENCES
1. 2014 Florida Building Code (2012 IBC w/State Amendments)
2. ASCE 7-10, Minimum Design Loads for Building and Other Structures
3. AISC 325-11, Manual of Steel Construction
4. ANSI/TIA-222-G, Structural Standard for Antenna Supporting Structures and Antennas
5. Construction Drawings: Morrison Hershfield, Site ID #: A2POO44C, dated 08/17/2016
6. Tower Structural Analysis: FDH Velocitel, Project #: 15CBV01400, dated 10/26/2015
7. Mount Assembly Drawings: Connect -it Wireless, Inc., Drawing#: L13ENG028, dated 04/05/2013
3. 0 A NA L YSIS CRITERIA:
0 Design Wind Speed: 158 mph (Ultimate 3-sec gust wind) with no radial ice (ASCE 7-10)
0 Risk Category: 11
0 Importance Factor: 1.0 (wind)
0 Exposure Category: C
a Topographic Category: 1
I
Project#: TMB-054 / 7160009 Date: 912712016
Site #: A2POO44C
4.0 ANALYSIS LOADING:
MORRISON HERSHFIE:LD
By. MK
Elev.
(ft)
Antenna Description
Carrier
Location
TX -Lines
Notes
PROPOSED
232.0
(3) Nokia FRIJ RRU
T-Mobile
1
(3) Nokia FHFB RRU
EXISTING
232.0
(6) Cellmax CMA-BDHH/6520/EO-8 Panel
600/1800/3000
(12) 1-5/8"
(1) 1.584" HCS
(3) Andrew DBXNH-6565B-A2M Panel
(3) Andrew TMA-S-DB1921-DD-A TMA
(1) Raycap ASU9338TYPOl Junction Box
(3) Nokia FRIG RRU
3
(2) Nokia FXFB RRIJ
Note: Any discrepancies in loading from this listing should be brought to Morrison Hershfield's attention; results of
this assessment cannot be used if the loading is different.
1. Proposed antennas and equipment are to replace existing or be added on existing sector mount.
2. Existing antennas and equipment to remain.
3. Existing antennas and equipment to be removed and have not been included in this mount analysis.
5.0 ASSUMPTIONS AND ANALYSIS PROVISIONS:
1. The tower, foundatiori, and antenna supporting mounts were constructed according to
applicable code.
2. The tower and antenna supporting mounting system have been maintained according to
- construction document and manufacturer's specifications. ,
3. The tower and its components, including antenna supporting mounts have not been
compromised.
4. The analysis of the existing tower is outside of the scope of this report and has not been
performed.
5. This report is not a construction document.
Project #: TMB-054 / 7160009
W6 A
Site #: A2P0044C MORRISON HERSHFIELD
6. 0 WIND LOAD CALCULATIONS ON APPURTENANCES:
Designed Criteria for existing and proposed appurtenances:
Vo 122 mph
Basic wind velocity without ice
Vi 30 mph
Basic wind velocity with radial ice
ti = 0.0 in
Radial ice thickness
ti,= 0.0 in
Ice thickness per height
z = 232 ft
Antenna rad center elevation above base
I = 1.0 Importance factor for wind
Expo. = "C" Exposure category
Topo. = I Topographic category
Ho = 0 ft Crest height above surrounding terrain
GH = 0.85 Gust response factor for appurtenance strength (222-G 2.6.7.1)
Kd = 0.85 Wind direction probability factor for appurtenance (222-G Table 2-2)
Ka = 1.0 Shielding factor for appurtenance (222-G 2.6.9.4)
NO ICE -
Date: 912712016
By. MK
Description
Weight
K,
qz
CAAc
CAAc
Front
Side
lb
Psf
ft,
ft2
CMA-BDHH/6520/EO-8
73.5
1.51
49.0
9.05
3.58
DBXNH-6565B-A2M
46.0
1.51
49.0
8.17
5.41
TMA-S-DB1921-DD-A
22.0
1.51
49.0
0.72
0.39
FHFB
51.0
1.51
49.0
2.42
1.52
FRIJ
60.0
1.51
49.0
-3.54
1.01
ASU9338TYPOI
1 25.0
1 1.51
1 49.0
2.76
1 1.22
1. T-Mobile's Existing (1) Cellmax CMA-BDHH/6520/EO-8 Panel Wind Load, Total of (6)
Wind Azimuth
Fa
Fs
0
lb
Ib
0
376.6
0.0
90
0.0
149.0
2. T-Mobile's Existing (1) Andrew DBXNH-6565B-A2M Panel Wind Load, Total of (3)
Wind Azimuth
Fa
Fs
Ib
Ib
0
340.0
0.0
90
0.0
224.8
Project III: TMB-054 / 7160009 Date: 912712016
Site #: A2POO44C MORRISON HERSHFIELD By. MK
3. T-Mobile's Existing (1) Andrew TMA-S-DB1921-DD-A TMA Wind Load, Total of (3)
WindAzimuth
Fa
Fs
lb
lb
0
29.8
0.0
90
0.0
16.3
4. T-Mobile's Proposed (1) Nokia FHFB Wind Load, Total of (3)
WindAzimuth
Fa
Fs
lb
lb
100.5
0.0
90
0.0
63.2
S. T-Mobile's Proposed (1) Nokia FRIJ Wind Load, Total of (3)
Wind Azimuth
Fa
FS
lb
lb
147.2
0.0
90
0.0
42.2
6. T-Mobile's Existing (1) Raycap ASU9338TYPOI COVP Wind Load, Total of (1)
WindAzimuth
Fa
Fs
lb
lb
0
115.0
0.0
90
0.0
50.8
Prcj;ct #: TMB-054 / 7160009 1 JRIA Date: 912712016
Site #: A2POO44C MORRISON HERSHFIELD
7.0 WIND LOAD CALCULATIONS ON MOUNT MEMBERS:
T-Mobile's Existing (1) 13' Sector Mount Wind Load, Total (3):
ANSI[TIA-222-G Section 2.6.9.2.2: Effective Prodected Area for Mountino Frames
Projected Area of Members on Front Pam:
Af:-
7-1-ft 2
Projected area of flat components on ftont face
Ar :=
0.0 ft 2
Projected area of mund components on front face
A, -.-
39.0 ft2
Gross area of the mount as it it were solid
(Af
. Ar)
e
Ag
Solidity ratio of the mount
Rrf:= 0.6� 0-4c 2 _ 0.6 Reduction factor for round elements
cn:- 1 158� 1.05(0.6- 6) 1.8 if e :5 06 - 19 Force coefficrent for the mount
1 1-58 + 2.61(E - 0-6) 2.0 oth�
EPAADT -- C.-(Af + Rrf Ar) - 12.&ft 2 Effective projected area of the mount
ProjectedArea, of Members behind FrontFace.,
Afs:= Oft'
A. -, Oft 2
FPAFN:- 0.5 (2.0 At, + 1.2-A,) - Olft'-
Total Effective Projected Area:
EPAN:- EPAp,,N + EPAFN - 129ft2
Projected area of flat components behind front face
Projected area of round components behind front face
Equivalent Cm Factors fbr Members on Front Face.
Car- C� - 1.8
C,u — CW-Rf - 1-1
Ca factor for flat members on front face
Ca factor for mund members on front face
Equivalent Ca Factors for Member Behind Front Face:
Ca = 10 for flat members and Ca = 06 for mund members.
- L3x3xl/4 Angle (3" Width) — Main Horizontal
Width = 3/12 0.25 ft, Elevation = 232.0 ft, Ca 1.8
w = q,GHC,A, (49.0 psfl*(0.85)*(1.8)*(0.25 ft) 18.7 lbs/ft
- L2x2x3/16 (2" Width) — Horizontal Bracing
Diameter = 2/12 = 0.17 ft, Elevation = 232.0 ft, Ca = 1.8
w = qzGHCaAa = (49.0 psfl*(0.85)*(1.8)*(0.17 ft) = 12.7 lbs/ft
- L2.5x2.Sxl/4 (2.5" Width) — Boom Arm
Diameter = 2.5/12 = 0.21 ft, Elevation = 232.0 it, Ca = 1.8
w = q,GHC,Aa = (49.0 psfl*(0.85)*(1.8)*(0.21 ft) = 15.7 lbs/ft
By: MK
Project #: TMB-054 / 7160009
I VA
Date: 912712016
Site #: A2POO44C MORRISON HERSHFIELD
- SR3/4 Rod (0.75" Diameter) - Boom Arm Bracing
Diameter = 0.75/12 = 0.06 ft, Elevation = 232.0 ft, Ca = 1.1
w = q,GHC,A, = (49.0 psfl*(0.85)*(1.1)*(0.06 ft) = 2.7 lbs/ft
PIPE-1.5 (1.875- OD) - Boom Arm Vertical
Diameter = 1.875/12 = 0.16 ft, Elevation = 232.0 ft, Ca = 1.1
w = q�GHC�A� = (49.0 psf)*(0.85)*(1.1)*(0.16 ft) = 7.3 lbs/ft
- PIPE-2.0 (2.375- DID) - Mast Pipe & Stiff Arm Pipe
Diameter = 2.375/12 = 0.20 ft, Elevation = 232.0 ft, Ca = 1.1
w = q,GHC,A, = (49.0 psf)*(0.85)*(1.1)*(0.20 ft) = 9.2 lbs/ft
This mount analysis has been performed in accordance with the 2014 Florida Building Code, 51h Edition
based upon an ultimate 3-second gust wind speed of 158 mph converted to a nominal 3-second gust wind
speed of 122 mph per section 1609.3.1 as required for use in the TIA-222-G Standard per Exception #5 of
Section 1609.1.1. Exposure Category C with a maximum topographic factor, Kzt, of 1.0, and Risk Category
11 were used in this analysis.
A concentrated live load of 250 lbs at a selected two worst case locations, these two load cases were
considered to act independent of each other. The following load combinations were considered in this
analysis:
0 1.4 DEAD
0 1.2 DEAD + 1.5 LIVE
0 1.2 DEAD 1.6 WIND X
0 1.2 DEAD 1.6 WIND Z
a 0.9 DEAD 1.6 WIND X
a 0.9 DEAD 1.6 WIND Z
The mount geometry and member details have been taken from the Connect -it #: VF13-3-96 Assembly
Drawings. The existing and proposed loading were taken from the construction drawings completed by
Morrison Hershfield, Site ID #: A2130044C, dated 08/17/2016.
The existing sector mount was analyzed using RISA-31) model. From the Risa-3D analysis, the sector frame
mount is capable of supporting the existing and proposed equipment configuration [See attached RISA-3D
output].
By. MK
Proj;ct #: TMB-054 / 7160009 1 VdA Date: 912712016
Site #: A2POO44C MORRISON HERSHFIELD By. MK
U.—ha, �—' . I h— I �w I n -.s.. -.;. -1. n� .--
1—
M4
L3x3x4
.588
26
11
.041
130
z
6
19908 -
146656
-688P-7-
I
H2-1
2
M32
PIPE 2.0
.565
36
3
.121
0
12957
---
33048
-92!
1-9-
265
H1-1b
3
M1
L3x3x4
.525
26
11
.078
13
z
2.0-L
46656
-F81
Z7-
I
H2-1
4
M19
1-2.5X2.5x4l
.348
46.726
3
.118
52.773
z
-L
3
2051 ---
38556
11125
319
H2-1
5
_.MIO_
HSS3X3X4
348
a
5
.071
11.7
z
H�L
79056
�69(
�--6-
463
H1-1b
6
M31
HSS3x3x4
.337
0
4
.064
0
z
-L
4
T750 ---
79056
169(
6-6-
A87
HI -lb
7
M17
L2.5x2.5x4
.322
52173
6
.080
52,773
v
2051 ...
38556
.11,
25-
A13
H2-1
8
M16
L2.5x2.5x4
.317
52173
6
096
52.773
_L
1_
2051 ---
38556
-11,2-5-
124
H2-1
9
M18
L2.5x2-.5x4.
�303
46726
1 3
123
92,773
Z
3
2051 ---
3&556
.11,
2 5-
-398
H2-
10
M5
PIPE 2-OT
2-20
13-4-1-2-5-F
_6
1' 043
1 12375
111805
...
33D48
11.92!
U-41.9711
MAI,
1 L
E
'E 22:00
PIP
1'
6
1
152 15
1L�
-925"-9-
864
HI -lb
1:L
M�
:�20'
T3
T33 25
3:
1 6
:07gl
0�
18:3
37g
1
14
4
1,805!!fl
3W
8
Hl-lb
V
M15
I L5x3x8
1 .167
1 9
1 6
1 .080
1 9
1 v
1611,65
...
P215OT-UNIZ.-P-3691
H2-1
14
M14
I L5x3x8
1 .133
1 9
1 7
1 .072
1 9
1 z
13111
M-62
---VA631
H2-1
1
M23
I PIPE 1.5
1 126
1 36
1 3
1 .036
1 0
1
13
12038 ---
12426-
. _g12
H I q�-
-
- ---'
Based on our analysis, the maximum force on any of the connections of the mount assemblies to the
tower are much less than the minimum required 10-kips; therefore, by inspection, all connections are
determined to be sufficient for the proposed loading.
Summary of Mount Analvsis Results:
The existing 13' Sector Mount will be sufficient to support the existing
and proposed equipment.
9.0 RECOMMENDATIONS.
1. All assumptions made in this analysis should be carefully reviewed. Morrison Hershfield should be
contacted for any discrepancies so that a full assessment may be made to validate the results of
this analysis.
10.0 ATTACHMENT:
z Risa-3D Output
y
A,
z x
Envelope Only Solubon
Morrison Hershfield
MK
TMB-054 / 7160009
I SK - 1
A2POO44C / SBA SWAIN ROAD I Sept 27, 2016 at 5:46 PM
TMB-054—Sector Mount.r3d
NONE
Loads: BLC 1. DL
Envelope Only Solution
Morrison Hershfield
MK
TMB-054 / 7160009
A2P0044C / SBA SWAIN ROAD
SK-2
I Sept 27, 2016 at 5:47 PM I
TMB-054—Sector MountAd
y
A
z x
Loads: BLC 2, LL1
Envelope Only Solution
Morrison Hershfield
MK
TMB-054 / 7160009
A2POO44C / SBA SWAIN ROAD
SK-3
Sept 27, 2016 at 5:47 PM
TMB-054—Sector MountAd
y
A,
z x
Loads: BLC 3, LL.2
Morrison Hershfield
MK
TMB-054 / 7160009
ISK-4
A2P0044C / SBA SWAIN ROAD I Sept 27, 2016 at 5:48 PM
TMB-054—Sector Mount.r3d
y
A
z x
Loads: BLC 4. Wind X
Envelope Only Solufion
Morrison Hershfield
MK
TMB-054 / 7160009
I SK - 5
A2P0044C / SBA SWAIN ROAD I Sept 27, 2016 at 5:48 PM
TMB-064—Sector Mount.r3d
IS
Loads: BLC 5, Wind Z
Envelope Only Solufion
Morrison Hershfield
MK
TMB-054 / 7160009
ISK-6
A2P0044C / SBA SWAIN ROAD I Sept 27, 2016 at 5:48 PM
TMB-064—Sector Mount.r3d
Code Check
No Calk
� 1.0
.90-10
.7&.60
.50,75
0.150
c
.12
I
Morrison Hershfield SK-7
MK A2P0044C SBA SWAIN ROAD Sept 27, 2016 at 6:06 P
TMB-054 / 7160009 TMB-054—Sector MountAd
Company
Designer
00'ORKSAJob Number
T E C H N 0 L 0 G I E S Model Name
Global
Morrison Hershfield
MK
TMB-054/7160009
A2130044C / SBA SWAIN ROAD
Display Sections for Member CaIcs
5
Max Internal Sections for Member Calcs
97
Include Shear Deformation?
Yes
Include Warping?
Yes
Trans Load Btwn Intersecting Wood Wall?
Yes
Increase Nailing Capacity for Wind?
Yes
Area Load Mesh (in A 2)
144
Mer,qe Tolerance (in)
.12
P-Delta Analysis Tolerance
0.50%
Include P-Delta for Walls?
Yes
Autornaticly Iterate Stiffness for Walls?
Yes
Maximum Iteration Number for Wall Stiffnes
33
Gravity Acceleration (in/se&2)
386.4
Wall Mesh Size (in)
12
Eigensolution Convergence Tol. (I.E-)
4
verticaL is
�XLZ
!Global Ober Orientation Plane
I
I Static Solver
I Sparse Accelerated
I Dynamic Solver
I Accelerated Solver
Hot Rolled Steel Code
AISC 14th(360-10): LRFD
Ad'ust Stiffness?
Yes(Iterative)
RISAConnection Code
AISC 14th(360-10): LRFD
Cold Formed Steel Code
AISI S1 00-10: LRFID
Wood Code
None
Wood Temperature
< 100F
Concrete Code
None
Masonry Code
None
Aluminurn Code
None --Building
Number of Shear Regions
4
Region Spacing Increment (in)
4
Biaxial Column Method
Exact Integration
Parma Beta Factor (PCA)
.65
Concrete Stress Block
Rectangular
Use Cracked Sections?
Yes
Use Cracked Sections Slab?
No
Bad Framing Warnings?
No
Unused Force Warnings?
Yes
1 Btar.Diarn, SDacing?
0
NREBAR
lWin
concm e eba Set
SET ASTMA615
Min % Steel for Column
1
Max % Steel for Column
18
Sept 27, 2016
Checked By: TH
RISA-31D Version 12.0.0 [CA ... \ ... \ ... \ ... \TMB-054 MMAnalysisUMB-054—Sector Mount.r3d] Page 2
Company
Designer
hERKSAJob Number
r E C H N 0 L 0 G I E S Model Name
Global, Continued
Morrison Hershfield
MIK
TMB-054/7160009
A2POO44C /SBA SWAIN ROAD
Seismic Code
ASCE 7-10
Seismic Base Elevation (in)
Not Entered
Add Base Weight?
Yes
Ct Z
.02
Ctx
.02
T Z (sec)
Not Entered
T X (sec)
Not Entered
R Z
3
R X
3
Ct Exp. Z
.75
Ct Exp. X
.75
SDII
1
SIDS
1
S1
1
TL (sec)
5
Risk Cat
I or 11
Seismic Detailing Code
ASCE 7-05
0nnZ
1
ornx
1
Rho Z
1
Rho X
I
Sept 27, 2016
Checked By: TH
Hot Rolled Steel Properties
Label Msoi I u Th8mn 11..De fk.. Yield
's,, s 'sil R,_ luLsil RI
Lt" —L
F-1-T— A36 Gr.36 0 1154 1 .3 .66 149 f 36 .5 1 58 1.2
Hot Rolled Steel Section Sets
I �k.l Q�— T,— n..;— i;.f A n i,�, r i, r I H�Al
1
Main Horizontal
L3x3x4
Beam
Sinai Anale
A36 Gr.36
Typical
1.44
1.231.23
.031
2
Horizontal Bracing
L2x2x3
HBrace
5inole Ancile
A36 Gr.36
T ical
.722.271.271
.009
3
Connecting Angle
L5x3x8
Beam
Sinale And
A36 Gr.36
T ical
3.75
2.559.43
.3122
4
Boom Arm
L2.5x2.5x4
VBrace
Single And
A36 Gr.36
T ica1111111
.692.692
.026
5
Boom Arm Bracing
SR 3/4
VBrace
BAR
A36 Gr.36
T icall
.442.01
.016
.031
6
Boom Arm Vertical
PIPE 1.5
Beam
Pine
A36 Gr.36
Typical
.749.293.293
.586
7
Mast Pipe
PIPE 2.0
Column
Pipe
A36 Gr.36
T ical
1.02.627.627
1.25
8
Stiff Arm Pipe
PIPE 2 �O
Beam
Pipe
A36 Gr.36
T ic 1
1 ' 02
' 627.627
1.25
i Connection
3T
PSS 3x4
1 am
SquapTubej
A36 Gr.36
T ic 1
2.44
3.023.02
5.08
v9o-
VertiGal Support
PIPE 2.0
1 22mn
1 �Ine
A36 Gr.36
T ic 1
1 n9i
A971
r27
1 2
Joint Boundary Conditions
1�;�# I �k�f v rw;-i v run-i 7 run,i v o-. m w—�i v om r� w—Ai 7 Pm n,-hi—Ai P—f;-
1 1
1 53
1 Reaction
Reaction
1 Reaction
Reaction
2
N52
Reaction
Reaction
I Reaction
Reaction
3
N54
Reaction
Reaction
I Reaction
N59
Reaction
Reaction
I Reaction
Basic Load Cases
RISA-31D Version 12.0.0 [CA ... \ ... \ ... \ ... \TMB-054 MA\Analysis\TMB-054—Sector Mount.r3d] Page 3
Company
Morrison Hershfield
Designer
MK
Job Number
TMB-0541 7160009
T E C N N 0 L 0 G I E S Model Name
A2POO44C / SBA SWAIN ROAD
Sept27,2016
Checked By: TH
Basic Load Cases
(Continued)
BLQ-[�escuption
Cat-egoU
X Gr..,Y Gr.. Z Gra.. Joint Pqint
Distobuted Area(Member)Purface(RI 11
Wind Z
I WLZ
I I i 1 6
I 26
Load Combinations
mwf
M-R
Envelope Joint Reactions
Ininf Y nhi I r. v nhi I C, 7 nhi 1 r KAY rk-f+i I el. KAY ne-M 1 r. R47 ne-ftl 1 r.
1
N53
max
1297.547
8
1 672.717
3
1454.015
10
0
1
2.121
1 8
1 0
1
2
min
-1431.771
5
1 345.785
11
-3297.938
7
0
1
-2.269
1 5
0
1
3
N52
max
1332.623
4
1 686.64
3
2971.242
6
0
1
2.193
4
0
1
4
min
-1203.592
9
1 355.888
10
-1125.401
11
0
1
-2.019
9
0
1
5
N54
max
42.037
1
245.495
9
0
1
0
1
0
1
6
min
-42.808
9
-249.01
4
0
1
0
1
0
1
7
N59
max
168 ' 162
5
1
544.881
5
0
1
0
1
0
1
8
min
-163.283
13.682
9
-537.212
8
0
1
0
1
0
1
9
Totals:
max
2406.203
4
9 00
3
4349.445110
1
10
min
-240r 9n'A
9
-3 �7
11766 . 951
11
4349.4511
7
1
Envelope AISC 14th(360-10): LRFD Steel Code Checks
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RISA-31D Version 12.0.0 [CA ... \ ... \ ... \ ... \TMB-054 MMAnalysisUMB-054-Sector Mount.r3d] Page 4
. 1 4
Company Morrison Hershfield Sept 27, 2016
RROSADesigner MK
Job Number TMB-054 / 7160009 Checked By: TH
T E C H N 0 L 0 G I E S Model Name A2POO44C / SBA SWAIN ROAD
Envelope AISC 14th(360-10): LRFD Steel Code Checks (Continued)
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