HomeMy WebLinkAboutPermit Correspondence 2004-3-5
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KE'A TING
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vOICE (34i) 726-9995
FAX . -(541),726-9996
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March S. 2004
Bob Barnhart
City of Springfield
Development Sen.ices
225 fifth Street
Springfield, OR 97477
Re: qty pennit COM 2003 . 00 196'
149 West Centennial
A visit was made to the above site at the request of the O'\\'Ilef (Ms. Barbara de Ronden-
Pas) to assess the as-built conditions for a retrofitted CMU foundation wallundet an
,existing 996 sq ft residcDtial stT'Ucture. whieh is. cuaentIy in the process of substantial
repairs and restorations. The foundation work was questioned by the City of
Springfield building inspector, as outlined below, and an engineermg evaluation "'as'
deemed appropriine.
Details which are relevant to this evaluation are iterated below:
'"
I. The existing residential stnicture is a sunpJified cottage style, stylisti~lJy
similar to.the late Bungalow period. Constructionmethod$ and siding are
consistent ,\\,th 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
D"lI;"'~llnc;.e....suitabJe for restoration and continueduseashousing. r
2. Tbe present owner purchased the structure \l,ith the stated intention of restoring
it to presentable condition and making it available as a rental unit '
3. The fanner fOUlldation was composed of isolated piers and wood posts.
4. The StrUcture was raised and a new footing was. installed, based on a pennit
issued on 4-03-03 ' ' , ,
5. The footings were inspected and approved prior to concrete placement, on 5-
20-03. .
.6. ' A foundation inspection was sched~red for the folJo'wing day, ",rith 110
additional approvals.
7. A 24ft 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 me site.
8. A required bond beam on the top of the CMU wall was nor installed, but
foundation boltiog and sills are evident OD inspection.
9. The quality of worlananship is consistent with professionally installed .~ '
masonry, exhibiting tooled joints, straight coursing, plumb walls, arid square
earners.
The owner reports that her ~ds do Dot peniut removal and replacement of the new
foundation, or raismg the house again to perform substantia) repailS. Therefore, it is
prudent to consider what effect the present conditions may have on the longe'~ty and
safe1yofthe structure, and to set forth conditions for an "Alternate Materials and
Methods of Construe non" application. per osse Section 105.
To this end, the following work items are undertaken, and the results reported:
1. Verify that the vc:rtical steel dowels w~re installed at 48" o.e. as-indicated in the.
pennit plan set. This ensures that forces normal to the wall are earned UlTOUgh
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Barbara J. de Ronden-Pos
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reinfoTce~ masonry, and shearing forces are not ~ed entirely by rnol1ar
bonds ({his is verified by random selection oj grout cells and 1'otohommenng , '
into them to intercept The reinforcing. aiuJ inten'iewing inspectors and
workmen) .
2. Calculate the allowable moment capacity of me as..constructed grade beams
(footings) and compare them to expecTed 'values that may be generated by the
sbear walls. (I'hese calculations are sealed and appen4ed 10 this1eport).
'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 ,structUre is Dot constructed upon this foundation 'without
futther evaluation.. , This is to say. while the foundation is adeqUate for !be
present purposes. if a future owner CQnStrocts a second story on this building, or
re-designs the lateral force resisting system to induce high concentrated loads
On the present system, itS adequacy may be in question, and further evaluations
'may be necessaXy. (This requirement must, be selflmh by the building
juriJdicTion, the City of Springfield) , \ "
Ba,sed on the above, the foundation is adequate for the intended purpose.1fyou Mve '
any questions. please feei free to call. '
(Sealed)
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Stephen G. Keating PE SE,
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- PHONE 541-726-9995 FAX 541-72$09996
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PAQJfCT II BARBARA oe RONOEN-PAS
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