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HomeMy WebLinkAboutObservation of Drilled Pier Installation 06.09.2017HPI<UMAR Geotechnical Engineering 1 Engineering Geology Materials Testing 1 Environmental 5020 County Road 154 Glenwood Springs, CO 81601 Phone: (970) 945-7988 Fax: (970) 945-8454 Email: hpkglenwood@kumarusa.com June 9, 2017 RM Construction Attn: Will Zeman 5030 County Road 154 Glenwood Springs, Colorado 81601 will CObuildwithrni.com Office Locations: Parker, Glenwood Springs, and Silverthorne, Colorado Project No. 16-7-577.A Subject: Observation of Drilled Pier Installation, Proposed Residence, Lot 53, Heron Crossing a Ironbridge, Garfield County, Colorado Gentlemen: As requested, a representative of 1-1-P/Kumar observed the drilled pier installations at the subject site on June 6, 7, and 8, 2017 for suitability to support the building foundation. The findings of our observations are presented in this report. The observations were performed in accordance with our agreement for professional services with RM Construction dated June 6, 2017. We previously provided drilled pier recommendations for the proposed residence at the site in a report dated March 16, 2017, Project No. 16-7-577. The foundation of the proposed residence was designed by Lindauer-Dunn, Inc. to be supported on fifty-one drilled piers of 12 to 24 -inch diameter. The pier location plan is shown on Figure 1. Our observations of the pier hole drilling are presented in the attached Drilled Pier Observation Reports. The pier holes were observed to have penetrated the alluvial fan deposits and adequately embedded into the underlaying river gravel deposit. Due to caving of the gravel, the practical drilling limit was 1 to 2 feet into the deposit. Based on the previous subsurface exploration and our current observations at the site, the installed piers appear adequate to support the recommended design values and pier load capacities. The findings submitted in this letter are based on our observation of the drilled pier installations, our experience in the area and the previous subsurface exploration at the site. Variations in the subsurface conditions below the helical piers could increase the risk of foundation movement. Our services do not include determining the presence, prevention or possibility of mold or other biological contaminants (MOBC) developing in the future. If the client is concerned about MOBC, then a professional in this special field of practice should be consulted. RM Construction June 9, 2017 Page 2 If you have any questions or need further assistance, please call our office. Sincerely, H -Pi KUMAR 1626614,2 -- Robert L. Duratt. I. Reviewed by: Steven L. Pawlak, P E: a 2rs Ani 4•�,r���.��� { 'f Attachments: Figure 1- Locations of Drilled Piers Report of Drilled Pier Observations, June 6, 2017 Report of Drilled Pier Observations, June 7, 2017 Report of Drilled Pier Observations, June 8, 2017 Project NO. 16-7-577.A 16-7-577.A 35 39 19 ' ifg a 50 17.• 18 43 •-•"-- 41 ]•• 38 42 40 1 34 33 • .„ -•:17?-- -46 ; 45 44 Lr. 132 - •-4[ 20 H -P KUMAR 24 49 47 15 51 . _ 27 29 • 30 28 22 • 21 9 2 •10 Lot 53, Heron Crossing at Tronbridge, Blue Heron Drive, Garfield County Colorado - Locations of Drilled Piers Figure 1 H—PKUMAP ,,ec 5020 County Road 154 Glenwood Springs, CO 81601 Phone,: (970) 945-7988 Fax: (970) 945-8454 Email: hpkglenwoodC'kumarusa.com Office Locations: Parker, Glenwood Springs, and Silverthorne, Colorado DRILLED PIER OBSERVATION REPORT Client: RM Construction Attn: Will Zeman 5030 County Road 154 Glenwood Springs, Colorado 81601 Project No. 16-7-577.A Day: Tuesday Date: 06/06/17 Sheet: 1 of 1 Project: Proposed Residence, Lot 53, Heron Crossing at Ironbridge, Blue Heron Drive, Garfield County, Colorado General Contractor: RM Construction Drilling Contractor: Penley Rig Type: Spiradrill Pier No. Location Pier Dia. Total Hole Depth Depth Variation Ground Over/Under Elev. Top of Pier Elev. Water Plumb (Top of Hole) Comment In Overburden In Gravel 1 18" 11' 6" 9' 6" 2' + 1' 96' 33/4" Dry -- 2 18" 11' 6" 9' 6" 2' + 1' 96' 33/4" Dry -- 3 18" 11' 10' 1' — 96' 33/4" Dry -- 4 12" 11' 9" 9' 9" 2' + 1' 96' 11/2" Dry -- 5 12" 11' 6" 9' 6" 2' + 1' 96' 11/2" Dry -- 6 12" 11' 6" 9' 6" 2' + 1' 96' 33/4" Dry -- 7 12" 11' 6" 9' 6" 2' + 1' 96' 33/4" Dry -- 8 12" 11' 3" 10' 3" 1' -- 96' 33/4" Dry -- 9 18" 11' 10' 1' -- 96' 33/4" Dry -- 10 18" 11' 10' 1' -- 96' 33/4" Dry -- oples: RM Construction — Will Zeman (will@buildwithrm.com) /RLD Robert Duran Steven L. Pawlak, P.E. Field Engineer Reviewed By H-PKUMAP 5020 County Road 154 Glenwood Springs, CO 81601 Phone: (970) 945-7988 Fax: (970) 945-8454 Email: hpkglenwood C kumarusE .com Office Locations: Parker, Glenwood Springs, and Silverthorne, Colo -ado DRILLED PIER OBSERVATION REPORT Client: RM Construction Attn: Will Zeman 5030 County Road 154 Glenwood Springs, Colorado 81601 Project No. 16-7-577.A Day: Wednesday Date: 06/07/17 Sheet: 1 of 3 Project: Proposed Residence, Lot 53, Heron Crossing at Ironbridge, Blue Heron Drive, Garfield County, Colorado General Contractor: RM Construction Drilling Contractor: Penley Rig Type: Spiradrill Pier No. Location Pier Dia. Total Hole Depth Depth Variation Over/Under Ground Elev. Top of Pier Elev. Water Plumb (Top of Hole) Comment In Overburden In Gravel 11 18" 10' 9' 1' -- 95' 6" Dry -- 12 18" 10' 3" 9' 3" 1' -- 95' 6" Dry -- 13 18" 10' 6" 9' 1' 6" + 6" 95' 6" Dry 14 18" 10' 6" 9' 1' 6" + 6" 95' 6" Dry — 15 18" 11' 10' 1' -- 96' 33/4" Dry -- 16 12" 11' 10' 1' -- 95' 6" Dry -- 17 12" 11' 10' 1' -- 96' 10" Dry -- 18 12" 11' 10' 1' -- 96' 10" Dry — 19 12" 10' 3" 9' 3" 1' -- 96' 33/4" Dry - 20 12" 10' 6" 9' 6" 1' -- i 96' 33/4" Dry -- Copies: RM Construction —Will Zeman (.vii!@buildwithrm.com) /RLD Robert Duran Steven L. Pawlak, P.E. Field Engineer Reviewed By 5020 County Road 154 Glenwood Springs, CO 81601 Phone: (970) 945-7988 Fax: (970) 945-8454 Email: hpkglenwood©kumarusa.com Office Locations: Parker, Glenwood Springs, and Silverthorne, Colorado DRILLED PIER OBSERVATION REPORT Client: RM Construction Attn: Will Zeman 5030 County Road 154 Glenwood Springs, Colorado 81601 Project No. 16-7-577.A Day: Wednesday Date: 06/07/17 Sheet: 2 of 3 Project: Proposed Residence, Lot 53, Heron Crossing at Ironbridge, Blue Heron Drive, Garfield County, Colorado General Contractor: RM Construction Drilling Contractor: Penley Rig Type: Spiradrill Pier No. Location Pier Dia. Total Hole Depth Depth Variation Ground Over/Under Elev. Top of Pier Elev Water Plumb (Top of Hole) I Comment In Overburden In Gravel 21 12" 10'9" 9'9" 1' •- 96' 33/4" Dry -- 22 12" 10'9" 9'9" 1' -- 96' 81/2" Dry -- 23 12" 11' 10' 1' -- 96' 81/2" Dry -- 24 12" 11' 10' 1' -- 96' 33/4" Dry -- 25 12" 11' 10' 1' — 96' 33/4" Dry -- 26 12" 10'9" 9'9" 1' -- 96' 33/4" Dry -- 27 18" 11' 10' 1' -- 96' 10" Dry -- 28 18" 11'3" 10'3" 1' -- 96' 33/4" Dry -- 29 18" 10'9" 9'9" 1' -- 96' 10" Dry -- 30 24" 11' 10' 1' -- 96' 33/4" Dry -- ogles: RM Construction — Will Zeman (will@buildwithrm.com) /RLD Robert Duran Steven L. Pawlak, P.E. Field Engineer Reviewed By H -P � INMAI2 5020 County Road 154 Glenwood Springs, CO 81601 Phone: (970) 945-7988 Fax: (970) 945-8454 Email: hpkglenwood@kumarusa.com Office Locations: Parker, Glenwood Springs, and Silverthorne, 3olorado DRILLED PIER OBSERVATION REPORT Client: RM Construction Attn: Will Zeman 5030 County Road 154 Glenwood Springs, Colorado 81601 Project No. 16-7-577.A Day: Wednesday Date: 06/07/17 Sheet: 3 of 3 Project: Proposed Residence, Lot 53, Heron Crossing at Ironbridge, Blue Heron Drive, Garfield County, Colorado General Contractor: RM Construction Drilling Contractor: Penley Rig Type: Spiradrill Pier No. Location Pier Dia. Total Hole Depth Depth Variation Over/Under Ground Elev. Top of Pier Elev. Water Plumb (Top of Hole) Comment In Overburden In Gravel 31 18" 11' 10' 1' -- 96' 33/4" Dry -- 32 18" 10'9" 9'9" 1' — 96' 33/4" Dry -- 33 18" 10'9" 9'9" 1' -- 96' 33/4" Dry -- 34 18" 11'6" 10'6" 1' -- 96' 33/4" Dry — 35 18" 11'9" 10'9" 1' -- 96' 33/4" Dry -- 36 18" 11' 10' 1' -- 96' 33/4" Dry — 37 18" 10'9" 9'9" 1' -- 96' 33/4" Dry — opies: RM Construction —Will Zeman (will @buildwithrm.com) /RLD Robert Duran Steven L. Pawlak, P.E. Field Engineer Reviewed By H-P�KUMA •"4":L1[k'✓1l:,;; 5020 County Road 154 Glenwood Springs, CO 81601 Phone: (970) 945-7988 Fax: (970) 945-8454 Email: hpkglenwood©lkumarusa.com Office Locations: Parker, Glenwood Springs, and Silverthorne, Colorado DRILLED PIER OBSERVATION REPORT Client: RM Construction Attn: Will Zeman 5030 County Road .154 Glenwood Springs, COlorado 81601 Project No. 16-7-577.A Day: Thursday Date: 06/08/17 Sheet: 1 of 2 Project: Proposed Residence, Lot 53, Heron Crossing at Ironbridge, Blue Heron Drive, Garfield County, Colorado General Contractor: RM Construction Drilling Contractor: Penley Rig Type: Spiradrill Pier No. Location Pier Dia. Total Depth Depth p Variation Ground Over/Under Elev. Topof Pierl Water Plumb (Ho e f Comment In Overburden 1 In Gravel 38 18" 10' 3" 9' 3" 1' -- 96' 33/4" Dry -- 39 18" 10' 3" 9' 3" 1' -- 96' 10" Dry -- 40 18" 11' 10' 1' -- 96' 10" Dry -- 41 18" 10' 9' 1' -- 96' 33/4" Dry -- 42 18" 10' 6" 9' 6" 1' -- 96' 33/4" Dry -- 43 24" 10' 9" 9' 9" 1' -- 96' 33/4" Dry -- 44 24" 11' 10' 1' -- 96' 10" Dry -- 45 18" 10' 9" 9' 9" 1' — 96' 10" Dry — 46 18" 11' 10' 11 — 96' 10" Dry — 47 18" 10' 9" 9' 9" 1' -- 96' 33/4" Dry -- oples: RM Construction — Will Zeman (will@buildwithrm.com) /RLD Robert Duran Steven L. Pawlak, P.E. Field Engineer Reviewed By H-P� KUMA12 L�+�ateCI�l1[i.ill Enginee_rin:7 C�.+:rl:-�,_•n'ir if��„_';n. 5020 County Road 154 Glenwood Springs, CO 81601 Phone: (970) 945-7988 Fax: (970) 945-8454 Email: hpkolerwood@kumarusa.com Office Locations: Parker, Glenwood Springs, and Silverthorne, Colorado DRILLED PIER OBSERVATION REPORT Client: RM Construction Attn: Will Zeman 5030 County Road 154 Glenwood Springs, Colorado 81601 Project No. 16-7-577.A Day: Thursday Date: 06/08/17 Sheet: 2 of 2 Project: Proposed Residence, Lot 53, Heron Crossing at Ironbridge, Blue Heron Drive, Garfield County, Colorado General Contractor: RM Construction Drilling Contractor: Penley Rig Type: Spiradrill Pier No. Location Pier Dia. Total Hole Depth Depth Variation Over/Under Ground Elev. Top of Pier Elev. Water Plumb (Top of Hole) Comment In Overburden In Gravel 48 18” 10' 3" 9' 3" 1' -- 96' 33/4" Dry 49 24" 10' 9" 9' 9" 1' -- 96' 33/4" Dry -- 50 24" 10' 3" 9' 3" 1' -- 95' 6" Dry -- 51 18" 10' 9' 1' -- 95' 6" Dry -- opies: RM Construction — Will Zeman (will @buildwithrm.com) /RLD Robert Duran Steven L. Pawlak, P.E. Field Engineer Reviewed By