4057 Northview Ter - Framing Inspection ReportField Report
Project: Hermanson Remodel
4057 Northview Terrace
Eagan, MN 55123-1555
Date: 12/9109
Time: PM
Notes:
Voigt & Associates, Inc.
STRUCTURAL ENGINEERLVG SERVICES
4635 NICOLS RD. SUITE 204
EAGAN, MN 55122
PR. (651)6b67727 FAX. (651) 686-8444
Observation Report Proj # 2009-180
by RNS
Present at Inspection: Corey Hedstrom of Manley Renovations and his framer
The job is a single family residence addition. The house is two stories with a gabled
truss roof system clear spanning from front to rear. The floors are joisted front to rear
with varying bearings along the middle of the structure.
The addition on the rear of the house necessitated the removal of 20 feet of rear
exterior bearing wall and the installation of a beam in the ceiling of the main level of the
home to carry the second floor load to the foundation. The second floor above the
addition is cantilevered and the roof truss bearings appear to be borne by a beam that
carries the roof load around the 20 foot opening for the addition. The original
LiteSteelBeam was sized to carry only the second floor load and exterior wall.
The problem is that the beam that carries the roof over the cantilevered portion of the
second story does not completely span the 20 foot opening for the addition. A
concealed bearing was found about 6' from the garage end of the addition opening.
The owner would like to eliminate this column. The existing single 1200LSE3350-118
LiteSteelBeam is undersized for the unanticipated additional load.
Remedial work required:
1. Double the existing LiteSteelBeam 1200LSB350-118. Install them back to back
and laminate them with 2- bolts at a maximum of 6' intervals OR #12 Teks 4
self tapping screws staggered at 1' intervals with 2 screws at the end evenly
spaced. This is the manufacturer's specification (attached).
2. A web stiffener must be installed at the bearing on the garage /laundry room end
of the beam. Use one of the three methods detailed by the manufacturer
(attached).
3. The column bearing under the new composite beam must be centered (within 1")
under the back to back LiteSteelBeam webs. The column may be a composite of
4 -2X6 #2 SPF nail laminated (6" staggered each lamination) to act as a
composite column.
The information and opinions contained herein are based upon the limited investigation
described at the beginning of this report. No warranties are expressed or implied
regarding the existence of other unknown conditions not specifically addressed. Our
work is in accordance with generally accepted engineering standards and is riot
intended to be relied upon or transferred to individuals other than the addressee. Should
information or conditions become known which differ from the discussion herein, they
may alter the opinions or conclusions of the undersigned.
Please call if you have any questions.
Sincerely,
Rex Swanson, PE
Hereby Certify That This Plan, Specification, Or Report Was Prepared
By Me Or Under My Direct Supervision And That 1 Am A Duly
Licensed Engineer Under The Laws Of The State Of Minnesota_
Voigt & Associates, Inc.
I STRUCTURAL ENGINEERING SERVICES
4635 NICOLS RD. SUITE. 204
-° EAGAN, MN 55122
PH. (651) 686 -7727 FAX. (651) 686 - 8114
i 6 fl oi h 6 c
41 g/
LSB Back-to-Back for Added Strength
LSB is generally used as a single beam or girder. They
may also be used in the back-to-back configuration.
Reasons for using LSB back-to-back include:
Need for greater carrying capacity or greater span
than from a single LSB
In remodeling and other applications that need to
use shallowest beam
Need for beams of lightest weight to facilitate
movement on-site
Assembling LSB Back-to-Back
When using LSB back-to-back, they should be
fastened together:
Using two 1/2 bolts at six foot intervals
...or
Using #12 Teks 4 self-taping screws, staggered
at one foot intervals, and two screws at the ends
evenly spaced
t U (.0
LSB beams often requre a web stiffener at supports
and at point load locations. Stiffeners should be used
unless a design professional determines they are not
required. For concentrated point loads exceeding
10.000 pounds consult a design professional.
The stiffener can be a half section of LSB, a pair of
wood studs. or a steel stud. The stiffener should fit
snugly between the LSB beam flanges.
Option 1: Half LSB Section
Section of LSB of same flange depth, cut in half
longitudinally, and cut to length to fit tight
between the LSB flanges.
3-#12-24 x 1-1/2" hex head Teks® screws
with #5 drill point (Buildex part number 1070000)
Option 2: 2 x 4 Wood Studs
2 x 4 #2 wood studs, cut to length to
fit tight between the LSB flanges. 2 nominal
face of wood studs is against LSB beam web.
3 11 gauge type 17 wood screws each stud.
Pre-drill 7/32 for screws through LSB web.
Option 3: 350S162 Steel Stud
350S162-54 steel stud, cut to length to fit tight
between the LSB flanges. Web of steel stud is
against LSB beam web.
4-#12-14 x 1-1/4 head Teks® screws with
#2 drill point (Buildex® part number 1120000)