HomeMy WebLinkAboutObservation of Excavation 01.08.24l{tAffi
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lnfrffifre Ou,nad CWonY
5020 CountY Road 154
Glenwood Springs, CO 81601
phone: (970) 945-7988
fax: (970) 945-8454
email: kaglenwood@kumarusa.com
wwlv.kumarusa.com
office l,ocations: Denver (HQ), Parker, Colorado Springs, Fort collins, Glenwood springs'and Summit County, Colorado
January 8,2024
Luis Varga
1 92 Castle ValleY Boulevard
New Castle, Colorado 816/-7
qmb]lc2020@gmail.Pom
ProjectNo. 23-7440
Subject:Observation of ExcavahryProposod Reeid€nce, Lat7, Block 9' Monument
Cteak Y illage, 543 Pondsro sa Crcle, Garfi etd Csuilty, Colorado
Luis:
As reqtrested , atpteseolativeof Krunar & Associat€s, Inc. obs€rved the excavation at the
subject site on January 2,2D24to evaluate the eoils expored for foundation support. The
nnaing' of our observations and rpcommendations for the founddion desigl tre pr6ont€d in this
rcpo; We previously conducted a subsoil strdy for desigt of foundations at the gite and
p,resentd our findings in a report dafed Septerrba 7,2023, Projec't No' 23'7'440'
fire proposed residelrce ie similar to that desribd in our previous rqort and will be above
ou*trpu"" with a slabon-grade Earlge. Spread footings plaod on thc natural soilg and siTEA for
an allowable bearing pressure of 1,500 psf were dcsigned for foundation zuppo,rt.
At the time of our visit to the srte, the foundation excavationhad besfl crrt in one lwel from up to
about 3y, to4 feet below the adjac€nt ground surfac€ on thc on the south side. Cut depth was
round y, to I foot deep on the northwest side. The soilc exposed in the bottom of the exa'avation
consisted of sandy silt which had b€n loosened by the excavation equipment. No free water
was e,lrcountered in the excavation and thc eoils were etightly moigt.
The soil conditions €rposcd in the excavation are consistsrt with thorc prcviously encountered
on the site and zuitable for support of spread footings dcsignod for the recommended allowable
bwingpressure of 1,500 psf with a risk of s€ttlement mainly if the bearing soils are wetted.
Loose disturbed soils should be rernovd in the footing arcas and the exposed goils moist€(led
andcornpaap4.. Theberingsoilsshouldbeprotdodfromfrostandooncrcteshouldnotbe
plac4-onfro"otsoils, Otherrecommendationsprercntedinourpreviousr€portwhichare
appticable should also be obseived.
The recommendations submitt€d in this letter arc based on our obsenration of the soils exposed
within the foundation cxcavation and thc prwious subsurface exploration atthe srte. Vmiations
in the subsurface conditions below the excavation sould incr€s€ the risk of foundation
movsm€nt. Wc should be advised of any variations encountered in the excavation conditions for
possible changee to recommendations contained in this letter. Our seffices do not include
-detonrining
thc preseirce, prevention or possibility of mold or other biological contaminante
Luis Varga
lanuary 8,2024
Page2
(MOBC) dweloping in the future. If the client is cottcsn€d about MOBC, then a professional
in ttris special field of practice should be consult€d'
If you have any guestions or ncod ftrtlrer aesistance, please call our offte'e'
Sincerely,
Kumar & Acsociates,
Steven L. Pawlalq P
SLP/kac
Kumar & Acaociates, lnc, e Project No. 2+7.440