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Home My WebLink About1320 WOODS LANDING DR - SPECIAL INSPECTIONS - 12/9/2008November 25, 2008 Project Number: JAMB-08G 18-25-35 Jamestown Builders, LLC 3003 East Harmony Road, Suite 400 Fort Collins, Colorado 80528 AXIOM STRUCTURAL ENGINEERING, LLC 1395 SOUTH GARFIELD AVENUE LOVELAND, COLORADO 80537 Re: Pier Drilling and Reinforcement Observation Lot 22, Lemay Avenue Estates 1320 Woods Landing Drive Fort Collins, Colorado (Larimer County) Dear Mr. Everitt: On November 25, 2008 this office observed a representative number of pier holes drilled at the above referenced site. The pier holes observed are bottomed in materials suitable to support design pressures as recommended in the geotechnical report by Earth Engineering Company, Inc., project number: 08-01- 088, dated August 8, 2008. The soil exposed in the excavation and pier holes and the type of foundation being constructed is consistent with the information and recommendations presented in the above referenced report. The pier holes observed are drilled to a depth of approximately 30 feet below the basement, front entry and garage grades. The pier holes are drilled to a depth of approximately 25 feet below the rear frost wall grade. Approximately 2 to 3 feet of water was encountered in some of the Northern pier holes and minimal to no water was observed in the Southern pier holes. Concrete was pumped into the bottom of the pier holes that contained subsurface water to expel the water and the excess drilling debris. Very sandy clay was observed in the pier holes to a depth of approximately 3 to 4 feet below basement grade. The observed pier holes meet the minimum penetration and length requirements indicated in the above referenced geotechnical report. A properly installed foundation sub -drain is required to help protect the basement from potential water infiltration. Please refer to the above referenced geotechnical report and the foundation design by Axiom Structural Engineering, LLC, project number: JAMB-08G18-25-25, dated September 12, 2008 for additional recommendations and requirements. Due to the potentially expansive nature of the soil below basement depth, particular attention should be given to the basement level framing to mitigate damage should the floor slab heave. All basement partition walls should be constructed to accommodate a minimum of 2 inches of vertical slab movement. Columns, pipes, door casings, stairs, cabinets, etc. should be installed such that in the event of slab movement, they do not transmit displacements or cause damage to other parts of the structure. The basement floor slab is considered a non-structural element and some movement is to be expected. If you have any questions, or if we may be of further service, please contact this office at your convenience. Sincerely, Axiom uctural Engineering, LLC Principal ums, �o�oRPp OR HF��,� l `v oN kF� •,�cv G 31696: l4NA L E NOV 2. 5 2008 OFFICE: (970) 461-1555, FAX: (970) 461-1582, EMAIL: Axiom2000@msn.com ;)�7 AXIOM -� iTRIJCI URAL ENGINFFRING LLC b 1375 SOUTH C%RFILLD a Lr.Lh I ( %rl 1V1) ( OLORADO 8037 December 2 2008 Project Number JAMB 08G18 2.) 4�i Jamestown Builders I LC 3003 East Hannon} Road Suite 400 Fort Collins Colorado 80528 Re Foundation Wall Reinforcement Obsendtion Lot 22 Lemav Avenue Estates 1320 Woods Landing Drive Fort Collins, Colorado (Larimer Countv) DLar Mr Everitt On DeceinbLr 2 2008 this office observLd and apprm ed the horizontal and vertical reinforcement placed in the foundation wall forms at the location referenLed above The reinforcement observed meets the specifications for size tvpe and installation in accordance with the foundation design drawings b\ Axiom Structural Engineering LLC project number JAMB 08G18 2.) 2.) dated September 12 2008 We also observed (2) d4 rebar Ufer ground rods that projeu sertically from the top of the basement foundation walls The Ufer ground rods are lapped approximate[\ 3 6 and the,, are tied to the bottom row of the continuous horizontal foundation wall reinforcement fhe vertical projeLtion of thL Ufer s are located approximate[\ 5 0 fast from the Northwest comer of the garage foundation along the North garagL foundation wall and approxlmdtelh 2 0 East of the Southwest corner of the basement foundation wall along the South basement foundation wall We also noted that the hold down straps are on site and are to bL located in thL foundation walls as indicated on the plan referencLd above We also observed that the window located in the Southwest comer of the basement will require a framed header and our office will be Lontactmg you soon with the size of this header Plea.e mfLr to thL .nLIOSLJ phoa graphs It sou have sin questions or if wL mas bL mf further icc pleas( conta(,t this offiLL at \our LonvLmLnLe Sincerelv Axiom Structural Fogineering, LLC Rus II T eteweN, E 1 T AD o Rf 6/� teve H Principal EnLIOSULS P E •� G 31696' -o " ix ONAL ry' DEC 0 2 2008 OFFICE (970) 461 1555 FAX (970) 461 1582 LMA1L Axiom2000@msn com "WOK( AXIOM STRUCTURAL ENGINEERING, LLC 1395 SOUTH GARFIELD AVENUE LOVELAND, COLORADO 80537 December 09, 2008 Project Number: JAMB-08G 18-25-55 Jamestown Builders, LLC 3003 East Harmony Road, Suite 400 Fort Collins, Colorado 80528 Re: Foundation Sub -Drain and Damp Proofing Observation Lot 22, Lemay Avenue Estates 1320 Woods Landing Drive Fort Collins, Colorado (Larimer County) Dear Mr. Everitt: On December 8, 2008 this office observed the foundation sub -drain materials installed around the exterior perimeter of the basement foundation. The sub -drain pipe is connected to a sump pit in the basement. The homeowner should check the sump pit periodically for water. If water accumulates in the pit, a licensed plumber should install a submersible pump with an automatic float switch. The pipe from the pit should discharge at an acceptable location away from all foundation walls, window wells, and exterior concrete flatwork. At the time of this observation the foundation sub -drain materials appeared to be properly installed. We also observed the spray -on damp proofing applied to the exterior of the basement foundation walls. The damp proofing appears to adequately cover the basement foundation walls. Please note that spray on damp proofing is typically effective for reducing moisture infiltration in the absence of hydrostatic pressure. Spray on damp proofing does not create a waterproof barrier that is capable of resisting moisture infiltration under hydrostatic pressure. Thus it may be possible for water to infiltrate the foundation, particularly at form -tie penetrations and hairline cracks that sometimes occur from shrinkage, especially near basement window openings. It is important to provide and maintain drainage paths that allow all surface water to flow quickly away from all foundation walls, window wells and exterior concrete flatwork. Please refer to the enclosed photographs. ,If you have any questions, or if we may be of further service, please contact this office at your convenience. Sincerely, Axiom Structural Engineering, LLC Russell T. 7-eetewey, E.I.T. Steve H. Kellums, P.E. Principal Enclosures o�pp0 Rf�js H. 31696 '. I NR DEC 0 9 2098 OFFICE: (970) 461-1555, FAX: (970) 461-1582, EMAIL: Axiom2000@msn.com o *Q 12/08/2008 IRa 12/08/2008 t it , ( I 00 4= O 00 CD