3578 Sawgrass Tr E - Memo re: Structural Engineering Braced Wall
MEMORANDUM
I hereby certify that this plan, specification or report
To: Lennar Corporation was prepared by me or under my direct supervision
Re: Front Den Braced Wall Review and that I am a duly licensed professional engineer
ota
.
1622 - Kingsfield "B2" under the laws of :V7~~7
3578 Saw crass Trail East
Eagan, MN
Nick Hanson
Stonehaven Preserves Date: 8-22-12
Project No. 2.0222 Minnesota Registration No. 46665
III
ICI
The purpose of this memorandum is to report the findings of a structural engineering braced wall
review of the revised front Den wall to the 1622 -Kinsfield "B2" -plan proposed in the Stonehaven
Preserves at the address above. The Hanson Group has reviewed the proposed modification and
the following is noted:
1. The front garage wall braced portal frame detail provided by Ulteig Engineers should be
referenced for bracing at the front garage wall.
2. The attached partial plan of the modified front Den wall provided by Lennar is attached
below for reference. The modification is an 8'-4" wide window in place of a 5/0x6/0 window
specified.
A structural engineering review was conducted of the proposed modified front wall Den window.
The modification outlined above and in the attached partial plans will not affect the structural
integrity of the Main Windforce Resisting System as laid out by Ulteig Engineers provided the
attached shear wall detail is constructed to brace the front wall.
After our review of the above information and associated documentation, it is our professional
engineering opinion that the proposed modification will not affect the braced wall layouts
previously provided upon construction of the shear wall detail.
This document applies to the review of the front Den wall modification of the braced wall drawings
provided by Ulteig Engineers. All other aspects of the project are outside the scope of this
document.
All construction is to be in accordance with this document, standard industry practice, and the
requirements of the Code.
Sincerely,
The Hanson Group
ROOF TRUSSES Project Number: 2.0222
FASTENED TO AUG 2 2 M Date: 8-22-12
PLATES w/ (3) 8d Sheets: 1 of 1
TOENAILS
3407 Kilmer Lane North,
Sulte4 2x4 BLOCKING
Plymouth, MN 55441
Tel 612-708-3572 BETWEEN
www.hansongroupmn.com TRUSSES NAILED
TO TOP PLATES w/
(3) 8d NAILS EACH
2'-11
• 1 PROVIDE FASTENING OF ABOVE
•I•!• FRAMING AS SHOWN ABOVE
` CORNER FRAMING TO
HAVE (2) FULL HT STUD
i~ FASTENED TO HOLDOWN
HATCHED AREA INDICATES ~/16"
MIN. PLYWOOD/OSB EXTERIOR
I SHEATHING FASTENED TO
• ' STUDS w/ 8d NAILS @ 3" O.C.
AT PANEL EDGES & @ 12" O.C.
AT INTERIOR SUPPORTS
Q ~I I'
_ r
a)
PROVIDE (2) 2x6 STUDS
I AT END OF SHEARWALL
USP STAD14RJ HOLDOWN
r' I ANCHOR ACROSS FLOOR SYSTEM
•%'f FASTENED TO DOUBLE STUDS w/
}f. { MIN. (38) 16d SINKERS (REFER TO
J f ULTEIG DRAWINGS FOR
`f y POST INSTALLED HOEDOWN
OPTION)
'/f{f ff ' a
PROVIDE 2x6 BLOCKING IN
® FLOOR SYSTEM AS REQ'D
'f
1 FRAMING DETAIL
S1 RAISED SHEARWALL
Lennar Corporation
Hanson Group Project: 2.0222 v .
August 22, 2012
Page 2
Braced Wall Section in Accordance with
R602.10.3 Method 5-Gypsum Board
LFEi Gyp Braced Wall
5 FEET
q* FOPWL
.e
3
E
New Shear
wall
M
a i ; • .fit
1!
NAM
I - *-W W I T-
Portal Framing Braced Wall by Ulteig
Illustration 1: Proposed Modification of Front Den Wall by Lennar
R602.10.3 Braced wall panel construction methods.
The construction of braced wall panels shall be in accordance with one of the following methods:
5. Gypsum board with minimum %2-inch (13 mm) thickness placed on studs spaced a maximum of
24 inches (610 mm) on center and fastened at 7 inches (178 mm) on center with the size nails specified
in Table R602.3(1) for sheathing and Table R702.3.5 for interior gypsum board.