HomeMy WebLinkAboutPermit Field Test & Inspection Report 2004-3-5
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KEATING
ENGINEERING
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188 west 9 ST. - 9LbG P
SPQI~. O~_ '17471
vOICE (541) 7Z~999!5
FAX -(541) 726-9996
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tiaroara J. ae Konaen-pos
Match 5, 2004
Bob Barnhart
City of Springfield
Development Smices
22S Fifth Street
Springfield, OR 97477
Re: Citypcnnit COM 2003.00196
149 West Ceotennial
,
A visit was made to the above site at the request ofrhe O"'.ner (Ms. Barbara de Ronden-
Pas) fO assess the as-built conditions for a retrofitted c~ro foundation wall under an
existing 996 sq ft resideDtial stnlcture, which is. currently in the process of substantial
repairs and restorations. The fOWldation work was questioned by the City of
Springfield building inspector, as outlined below, 81\d an engineering evaluation" as
deemed appropriate.
Details ",'hich are relevant to this evaluation are iterated below:
~
1_ The e..xisting residential structure is a simplified cottage style, stylistically
similar to the late Bungalow period. Construction methods and siding ate
consistent with pre-war housing, and it is reasonable to date it between 1920
and 1940. It appears to be well constructed and. except for obvious deferred
m~i~'ertllnc.e.,..suitable for restoration and continued use as housing.
2, The piesent owner purchased the snucture v.ith the stated intention ofrestorins
it to presentable condition and making it available as a rental unit
3. The former foundation was composed of isolated piers and wood posts,
4. The Str\lcmre was raised and a new footing was installed. based on a permit
issued on 4-03-03 '
5. The footings were inspected and, approved prior to concret~ placement, on 5-
20-03. .
6. A foundation inspection was sched\1Ted for the following day, with no
additional approvals.
7. A 24" high eMU foundation perimeter wall was completed without funher
inspections. and the structure was lowered to the foWl dation. The lifting
equipment was removed from the site.
8. A required bond beam on the top of me CMU wall was not installed, but
foundation bolting and sills are evident on inspection.
9. The quality ofworlananship is consistent with professionally installed '.
masonry, exhibiting tooled joints. straight cOUJ'Sing. plumb walls. and square
comers.
The owner r.:.y"'. ~ that ber f4nds do Dot pennit removal and replacement oftbe new
foundation, or raising the house again to perform substantial repain. Therefol-e. it is
prudent to consider what effect the present conditions may have on the 10nge'~tY and
safety of the structure, and to set fonh conditions for an "Alternate Materials and
Methods ofConstrucrion" application, perOSSC Section 105.
To this end> the following work items are undertaken, and the l'esults reported:
1. Verify mat the vc:rtical steel dowels were instalkd at 48" o.c, as indicated in the
pennit plan set This ensures that forces normal to the wall are ca.rried through
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reinforced nlasomy, and shearing forces ate not carried entirely by l1l011ar
bonds (this is ,'erified by random selection of grollt cells and l'otohammering
into them to intercept the reinforcing. and in/en.jewmg inspectors and
workmen)
2. Calculate the allowable moment capacity of the as-constructed grade beams
(footings) and compare them to expected values that may be generated by the
sbear waUs_ (Ihese calculafions are sealed and appentkd 10 this l'eport).
3. Identify the potentially reduced value of the foundation (item 2), and record this
engineering evaluation in the property records, for the purpose of ensuring that
a more substantial structUl'e is Dot constructed upon this foundation without
fm1her evaluation.. This is to say, while the fouodation is adequate for the
present purposes. if a future owner ~tn1cts a second stoty on this building, or
fe-designs the lateral force resisting system to induce high concentrated loads
on the present system. itS adequacy may be in questioD, and further evaluations
may be neetssa!)'. (This requirement must be set flmh by the building
jurisdiction, the City of Springfield)
Based on the above, the foundation is adequate for the intended purpose. If you have
any questions. please feel free to eall.
(Sealed)
&
Stephen G. Keating PE SE
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_ -= '-88 WEST B STREET SUITE'po f
~ -. SPRINGFIELD . OREGON . 97477
- ' -==: PHONE ~1-726.9995 FAX. 541-726-9996 J
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PROJeCT BARBARA DE RONDEN-PAS
~ESS. 149 WEST cENTENNIAL - SI'RINGFIELO
~ FOUNDATION EVAl.UA1'ION
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D~IIiNEA Steve KellttoQ
DATE 4~03
PROJECT NO 04-17
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