HomeMy WebLinkAboutPermit Building 2002-9-10
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Community Services Div, Building Safety
CITY OF SPRINGFIELD, OREGON
225 51b Street, Springfield, OR 97477 Ph. 726-3759
Job Address
City Job #
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AMBLESIDE MEADOWS SUBDIVISION-1ST ADDITION
Site Investigation Questionnaire for Consulting Design Professionals
oun ation requIrements - new structures on reSl enti 018
This fomi may be used as a temporary verification to allow construction to continue
on the job site until the consultant's stamped affidavit on the site soil compaction
and stabilization is submitted to the City. This form must be completed by a
licensed design professional (engineer or architect).or hislher authorized employee,
. and submitted to the building inspector prior to requesting City inspections or
placing foundation concrete. It is important that all questions be answered
completely for the foundation site t~ be approved for construction.
Owner and/or Contractor --.t\. k~ j... 0;- D S"u ~\)& M -eA"\
1. Date of the design professional's site evaluation? ~ \ lo l b '"2.-
2. Has the design professional reviewed a copy of the geotechnical information .
fo~ the subdivision that was provided with the building permit? Yes$:No_
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If not, please contact this office for a copy of the report. The design professional
must be familiar with the geotechnical inforination before completing this form.
3. What was the size and depth of the. excavation and lor rill? \
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. Was existing non-structural fill or expansive soil encountered on the lot?
<l1fes_No,1{ If ''yes'', what types, depths and locations?
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. What measures were taken to remedy the soil condition (include type of
engineered fIll used to stabilize the soil)? . t--J! .J,..
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Community Services Div, Building Safety ..
CITY OF SPRINGFIELD, OREGON
225 5th Street, Springfield, OR 97477 Ph. 726-3759
Job Address
City Job #
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Is the site as prepared {Uiequate. inadequate 0 to maintain constant moisture
content in the sub grade? Note: Verification of moisture stabilization in the sub.
grade is a requirement of the geotechnical report, and must be affirmed before
construction can continue.
If inadequate. what measures are needed to provide constant moisture content in
. the sub grade?
.. Is the site as prepared adequate'~ inadequate 0 to support the proposed
structure? An affirmative answer is requisite to proceeding with construction.
If inadequate, what additional work is needed to provide adequate
foundation support?
4. Did the design professional witness placement and compaction of the. N I" /J.
engineered rill, or is there a special inspection report forthcoming from a .
quaIifled agency? J witnessed Placement 0 Speciallnsp/compaction report 0
S. The design professional intends to USe the following Qlethod for installation.
of perforated perimeter footing drains: ... .
The design on the attached drawing provided by the design professional ..;... ~
The method shown on the original construction drawings...:...~................. 0
The typical 'Foundation Drain' dra~ing attached to permit.................... . 0
Perforated perimeter drains are not required. .. ... ..; ........; . .... ................. D.
Corrunen~: .
Note: City inspectors will inspectinstalled drains prior to cover upon request.~.
Call: 726-3769 to schedule inspection. ., .
2.
Community Services Div, Building Safety
CITY OF SPRINGFIELD, OREGON
225 5th Street, Springfield, OR 97477 Ph. 726-3759
Job Address
City Job #
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Low-point crawl space drainS are required to prevent the build-up of excess
moisture inside thefoundatioits during (and after) construction.. This drain .
may be installed after foundation placement only with the express permission
of the desim professional.
a. The design professionaI has determined the followin:g~'
The crawl space drain is required when the foundation is installed..... cJ2l
The low-point drain can be installed after foundationplacemelit without a
significant moisture build-up problem within the foundation............. ~
(The low-point drain may be installed at the A to- '1' . ... stage
of construction). post & beam, framing. roofing, etc. .. .
. .
b. Has the design professional observed and approved the installation of the
required low point drain?.................................. Yes, _ No ,x
if "yes", where is the low point drain located under the building and
where does it terminate. at this time? (must be an approved location, i.e.
street gutter, storm sewer, sump pump and discharge line to the street,
etc.)
The design professional must determine whether the approved permit drawings have
adequate foundation steel. Is any . additional foundation steel required that is not
shown on the foundatiQndrawings for the building? .
Yes ~ No _ If "yes", describe additional steel required (or provide drawing).
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The following statement must be signed by the individual doing the observations and
providing direction for the excavation and site preparation work on the properly.
3.
Community Services Div, Building Safety Job Address ~~"
. CITY OF SPRINGFIELD, OREGON City Job #
225 5th Street, Springfield, OR 97477 Ph. 726-3759
~114
. The undersigned design professional (or authorized employee) attests that he/she
observed required moisture ~tability procedures on this site,and that such procedures
were accomplished before any changes occurred in the moisture content of the sub-
grade under and around the building (where expansive soils were encountered). The
undersigned fiiither att.ests that the sub-grade, as prepared, is adequate to support the
building proposed for this site. .
Additional comments:
. (Note): A copy of this report shall be kept on site with the approved plans at all
~es. .
This report shall be followed by an affidavit, signed and stamped by the design
professional under whose auspices this report was completed, affirming the information
herein. The signed/stamped affidavit together with a copy of this report shall be
submitted to this office prior to requesting Iraming inspection for the.building.
Signature e. \c..\<- ~~<".~ L '\'>--L~-. ..
Name . . . ... itle rs.",c... ~~~b(...
Company --.t-tID ~"('\.~. ~ V\~ '1'\ .~ \.1 l-
Phone lPt>4.- ~&e~
Licensee
License #
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The geotechnical report for the Ambleside Meadows - 1 st Addition Subdivision --.
recommends immediate moisture stabilization of exposed expansive sub-grades, imd that
expansive soils be over-excavated and replaced with at least 12 inches offill compacted
to at least 95% of ASTM D698 for foundation preparation. The report also recommends .
that measures be taken to prevent water from collecting in or around the foundation areas
during and after the construction process, and .that positive site drainage be provided to .
reduce the infiltration of surface water into the expansive soils. .
The geotechnical report further emphasizes that the finish grade of landscape soil .
adjacent to the foundation should be at least 24" above the expansive bearing soils, fIrmly
compacted to reduce the infiltration of water at the surface. . The adequacy of f1l1 soil
material around the building must.be verified to the satisfaction of the design .
. professional.
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Community Services Div, Building Safety Job Address(.... ~~ I
cITy OF SPRINGFIELD, OREGON CityJob #
225 5th Street, Springfield, OR 97477. Ph. 726-3759.
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Affidavit
. For Site Investigation Questionnaire
. Foundation Sub-Grade Approval for . .
Residential Building Site in Ambleside Meadows - 1 st Addition
Subdivision
The undersigned hereby affirms that the excavation, structural fill and moisture
stabiliiation methods for the building site at the address shown above was observed by
me or an authorized employee of my fIrm and that the following is true:
1. The foundation sub-grade is capable of supporting a minimum of ISOO.psf, and is.
. adequate to support the building proposed for this site.
2. . The moisture content of the excavation was adequately maintained during the site
preparation process and was adequately covered to stabilized moisture content..
prior to any signifIcant change in moisture content of the sub-grade.
3. .The site is adequately graded and drained to prevent the collection of water. in the
excavated area during construction. .
4.
Signa~~..~..
Date 9Ii'1/6 ?/
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CALCULATIONS
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CANTILEVER RETAININ'G.WALL BASE DESIGN
, . . DENSITY OF STEM " ;150 PCF
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. STEM HEIGHT 8.000 FT
STEM THICKNESS ') 8 INCHES OTM => 4021 LB-FT
BASE HEIGHT. '. 10 INCHES
BASE WIDTH 60 INCHES RM=> 10182 LB-FT
ASSUMED TOE LENGTH 32 INCH_~
DEAD LOAD ON WALL 36 PLF .W=> 2928 LBS
SURCHARGE ON SOIL o PSF
SOIL WEIGHT 110:'PCF 1/6 => 10.00 INCHES
HORIZONTAL PRESSURE 35 PSF
ALLOWABLE SOIL PRESSURE 1500 PSF I' => 60.00 INCHES
SLIDING FRICTION CQEFF. 0.7
e => 4.75 INCHES **IN MIDDLE THIRD**
SOIL PRESSURE AT TOE => 863 PSF O.K.
OVERTURNING SF => 2.53 O.K.
SLIDING S.F. => 1.50 O.K.
MOMENT AT BASE OF STEM => 2987 LB-FT
.{ SHEAR AT BASE OF STEM => 1120 LBS
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1245 PEARL 8T. · EUGENE, OREGON 97401
TEL: (541) 484-9080
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CANTILEVER RETAINING WALL BASE DESIGN "
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DENSITY OF STEM 1.50 PCF
STEM HEIGHT. 8.000 FT ......,
STEM THICKNESS 8 INCHES OTM => 4021 LB-FT & ~ :: ,~.,
BASE HEIGHT 10 INCHES
BASE WIDTH . 56 .INCHES RM=> 10997 LB-FT ~......
ASSUMED TOE LENGTH 8 INCHES , ,
DEAD LOAD ON WALL 36 PLF W=> 4353 LBS .'<t~
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SURCHARGE ON SOIL o PSF
SOIL WEIGHT 110 PCF 1/6 => 9.33 INCHES
HORIZONTAL PRESSURE 35 PSF
ALLOWABLE SOIL PRESSURE 1800 PSF I' => 56.00 INCHES
S.L1DING FRICTION COEFF. 0.7
e => 8.77 INCHES **IN MIDDLE THIRD**
SOIL PRESSURE AT TOE => 1809 PSF N.G.
OVERTURNING S.F. => 2.74 O.K.
SLIDING SF => 2.23 O.K.
MOMENT AT BASE OF STEM => 2987 LB-FT
SHEAR AT BASE OF STEM => 1120 LBS
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TEL: (541) 484-9080
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CODE CONSULTANT. PLAN CHECKING
CONSTRUCTION INSPECTION
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