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RECEIVED
FEB 12 2020
ST. Lucie county, Permitting
MULLION CONNECTION ANALYSIS
REPORT TO:
MANNING BUILDING SUPPLY
3315 OLEANDER AVENUE
FORT PIERCE, FLORIDA 34982
REPORT NUMBER: NCTL-110-23899-1
REPORT DATE: 12/19/20
oS�pH A.
* . No. 58920
STATE OF
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Joseph A. Reed, PE
FL PE 58920
FL REG 33474
2020.12.21 07:12:20-05'00'
Professionals In The Science of Testing
Manning Building Supply f� NCTL-110-23899-1
Mullion Connection Analyses Page 1 of 11
S
National Certified Testing Laboratories (NCTL) was contracted by Manning Building
Supply to perform an engineering analysis connections between intersecting vertical and
horizontal mullions. Specifically, MI Windows and Doors CM-18531 and CM-18532
mullions used on various GRBK GHO Homes, LLC projects. This report presents the
calculation of mullion reactions for various size windows and design pressures as
supplied by Manning Building Supply. Connection methods between the horizontal and
vertical intersecting mullions are proposed and validated for the calculated mullion
reactions.
Referenced standards utilized for this project include:
Florida Building Code, Building, 6rh Edition (2017). International Code Council, 2017.
ADM 1-2015 2015Aluminum Design Manual. The Aluminum Association, Inc., 2015.
AAMA TIR A9-14 Design Guide for Metal Cladding Fasteners. American
Architectural Manufacturers Association, 2014.
The analyses presented herein consider only the structural capacities of the mullion
connections. The ability of the proposed connection methods to resist air infiltration,
water infiltration, water penetration, windborne debris impact, thermal effects or fire is not
within the scope of the analyses.
This report does not evaluate the windows, window installations, mullions or mullion
installation to the building substrate.
Manning Building Supply NCTL-110-23899-1
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Mullion Connection Analyses Page 2 of 11
Analyses
Mullion Reactions
The evaluated window elevations are presented on page 4 to page 8. Mullion reactions
for the design pressures supplied by Manning Building Supply are calculated on page 9.
A summary of the calculated mullion reactions is presented in Table 1.
Table 1 Mullion Reactions
Window
Design
Pressure
Mullion
San
Panel
Widths
Mullion
Reaction
Type A
34.3 psf
Bottom Vertical
72"
37"
236 lb
Type B
34.2 psf
Bottom Vertical
63"
53"
230 lb
Top Vertical
24"
53"
34lb
Type C
33.5 psf
Bottom Vertical
72"
37"
230 lb
Top Vertical
20"
37"
23lb
Type D
32.7 psf
Bottom Vertical
63"
37"
187 lb
-Type E
33.7 psf
Bottom Vertical
72"
53"
282 lb
Top Vertical
24"
53"
34lb
The maximum mullion reaction for the bottom vertical mullion is 282 lb. The connection
between the horizontal mullion and the bottom vertical mullion shall be designed for this
load. The maximum mullion reaction for the top vertical mullion is 34 lb. The connection
between the horizontal mullion and the top vertical mullion shall be designed for this load.
Mullion Connection Analysis
The proposed connections between the intersecting mullions are evaluated for fastener
shear capacity and allowable bearing stress between the fasteners and the components
of the connection. Calculations are presented on page 10 to page 11 and summarized in
Table 2.
Table 2 Summary of Mullion Connection Analysis
Connection
I Components
Capacity
Horizontal Mullion to
MI Windows CM-18531 or CM-18532 mullions
Bottom Vertical Mullion
(2) #10 x 2 screws
432 lb
see page 10
MI Windows CM-18531 or CM-18532 mullions
(2) 1-1/2" x 1-1/2" x 0.093" thick aluminum
Top Vertical Mullion to
angles; 1-1/4" long; 6063-T5 aluminum.
Horizontal Mullion
(2) #10 x 5/8" screws each angle; one screw in
260 lb
each leg of each angle; screws may be
countersunk in angle.
see page 11
The capacities of the connections evaluated in Table 2 exceed the mullion end reactions
thereby validating the connections for the window sizes and design pressures evaluated
in this report.
Manning Building Supply NCTL-110-23899-1
Mullion Connection Analyses Page 3 of 11
Attachments
Appendix A — Revision Log (1 page)
Manning Building Supply NCTL-110-23899-1
Mullion Connection Analyses Page 4 of 11
Window Elevations
WINDOW TYPE A
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74'
Manning Building Supply �I��j NCTL-110-23899-1
Mullion Connection Analyses Page 5 of 11
WINDOW TYPE 8
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Manning Building Supply NCTL-110-23899-1
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Mullion Connection Analyses Page 6 of 11
WINDOW TYPE C
74
Manning Building Supply lcrl�j NCTL-110-23899-1
Mullion Connection Analyses Page 7 of 11
WINDOW TYPE D
Manning Building Supply,( NCTL-110-23899-1
Mullion Connection Analyses Page 8 of 11
WINDOW TYPE E
N
N
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Manning Building Supply Tv
Mullion Connection Analyses
Mullion End Reactions
Design Pressure
Mark (PSF) h (inch
A
34.3
72.0
B - Bottom
34.2
63.0
B - Top
34.2
24.0
C - Bottom
33.5
72.0
C-Top
33.5
20.0
D
32.7
63.0
E - Bottom
33.7
72.0
E - Top
33.7
24.0
i- a
h
NCTL-110-23899-1
Page 9 of 11
a (inches) b (inches) Al (ft2) A2 (ft2) R (lb
37.0
37.0
6.87
6.87
236
53.0
53.0
6.72
6.72
230
53.0
53.0
1.00
1.00
34
37.0
37.0
6.87
6.87
230
37.0
37.0
0.69
0.69
23
37.0
37.0
5.72
5.72
187
53.0
53.0
8.37
8.37
282
53.0
53.0
1.00
1.00
34
Al A2
b -�
Manning Building Supply ,j�,J
Mullion Connection Analyses
Connection of Horizontal to Bottom Vertical
#10 X 2- INTO VERTICAL MULL
NCTL-110-23899-1
Page 10 of 11
CM-16532
ANCHOR
BRACKET
5766
�/ I �CM-16531
ANCHOR
BRACKET
5766
Secure horizontal mullion to vertical mullion with two (2) #10 x 2" screws through
horizontal mullion to screw, race of vertical mullion.
#10 x 2" Grade 2 Screws
CM-18531 Aluminum Mullion with 0.125" wall thickness
CM-18532 Aluminum Mullion with 0.125" wall thickness
6063-T5 Aluminum (Fy = 16,000 psi, Fu = 22,000 psi)
Shear Capacity of #10 x 2" Grade 2 Screw
Va = 216 lb (AAMA TIR A9-14)
Bearinq Capacity of #10 x 2" Grade 2 Screw at Horizontal Mullion
Va = 2(D)tFuA2
Va = (2)(0.190")(0.125")(22,000 psi)/3.0 = 348 lb
Capacity of one screw is 216 lb
Capacity for Connection with Two Screws is 432 lb
Manning Building Supply Ocrlj� NCTL-110-23899-1
Mullion Connection Analyses Page 11 of 11
Connection of Top Vertical to Horizontal
2 x 1-1/2 x .093 by 1-1/4" Long
-ium Angle (Each Side of Vertical) -
#10 screw securing
Ingle to mull
Horizontal Mull
CM-18531 or CM-18532
Secure top vertical mullion to horizontal mullion with two (2) 3/32" thick aluminum angles
(one each side of mullion).
#10 x 5/8" Grade 2 Screws
CM-18531 Aluminum Mullion with 0.125" wall thickness
CM-18532 Aluminum Mullion with 0.125" wall thickness
3/32" (0.093") thick Aluminum Angle
6063-T5 Aluminum (Fy = 16,000 psi, Fu = 22,000 psi)
Shear Capacity of #10 x 5/8" Grade 2 Screw
Va = 216 lb (AAMA TIR A9-14)
Bearing Capacity of #10 x 5/8" Grade 2 Screw at Aluminum Angle
Va = 2(D)tFu/i2
Va = (2)(0.190")(0.093"/2)(22,000 psi)/3.0 = 130 lb (t/2 for countersunk)
Bearing Capacity of #10 x 5/8" Grade 2 Screw at Horizontal and Vertical Mullion
Va = 2(D)tFu/n
Va = (2)(0.190")(0.125")(22,000 psi)/3.0 = 348 lb
Capacity of one screw is 130 lb
Capacity for Connection with Two Angles is 260 lb
Appendix A
Revision Log
Identification Date Page & Revision
Original Issue 12/19/20 Not Applicable