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HomeMy WebLinkAbout3111 S College Ave - Special Inspections/Engineering - 07/09/2013�ZD �675 g July 9, 2013 Dellenbach Motors 3111 South College Avenue Fort Collins, Colorado 80525 I' Attn: Mr. Mike Dellenbach (rmdellenbachl,aol.com) 1 0� CONSULTANTS, LLC Re: Construction Observation and Testing — Final Compliance Summary Report Three (3) Proposed Building Additions for Dellenbach Motors 3111 South College Avenue Fort Collins, Colorado EEC Project No. 1124115 Mr. Dellenbach: As you are aware, during various construction phases for the referenced project, Earth Engineering Consultants (EEC) personnel, provided construction observation and testing services of requested items on a part-time/periodic, as-needed/on-call basis as scheduled by the project's general contractor, Dohn Construction, as per the project specifications. Bi- monthly construction materials testing (CMT)/quality control (QC) reports concerning the services provided by EEC personnel were submitted to the Dellenbach Motors, (the owner's), Dohn Construction, (the general contractor), and to the project design team members' attention during the appropriate time period(s) as the test results became available. We have recently been asked by Mr. Mike Snow, project superintendent with Dohn Construction, to provide a summary and/or compliance letter addressing the services performed by EEC personnel regarding but not limited to the foundation(s) and interior floor slab(s) structural related elements, concrete masonry units (CMU) construction, and structural steel erection components for the three (3) additions. During the foundation construction phase for the referenced project, EEC personnel provided site observations and field density testing of on -site subsoils/replaced as engineered fill material within the three (3) foundation alignments, interior floor slab areas, backfill of foundation walls, and within on -site utility trenches, as recommended in the project -specific subsurface exploration report, (please refer to EEC's "Surface Exploration Report" dated August 20, 2012, Project No. 1122065). EEC personnel provided reinforcement observation of the foundation system(s) including the conventional spread 4396 GREENFIELD DRIVE WINDSOR, COLORADO 80550 (970) 545-3908 FAX (970) 663-0282 www.earth-engineering.com _ Earth Engineering Consultants,LLC EEC Project No. 1124115 Compliance Summary CMT/QC Report July 9,2013 Page 2 footings placed on either native subsoils and/or approved en�ineered/controlled fill material, cast-in-place foundation walls, and interior floor slab. During the concrete masonry unit (CMU) wall construction phases, EEC personnel provided, on a � periodic/special-inspection basis, reinforcement observations and observation/testing services of the CMU components, (i.e., mortar, grout and CMU block strength characteristics). EEC personnel also provided testing of all cast-in-place concrete for the foundation system(s), and interior floor slab(s), along with the exterior concrete flatwork areas. , Based on our review of the outlined testing, as directed by the general contractor and completed by EEC personnel on an as-needed basis, the final field density test results within the building addition footprint(s), and associated exterior flatwork, along with site utilities, met the project compaction requirements for fill materials placed and compacted to redevelop the foundation bearing strata, interior floor slab elevations, backfill placed adjacent to foundation walls and within on-site utility trenches. Laboratory compressive strength tests completed on the cast-in-place concrete for all foundation elements and floor slabs, along with the mortar, grout, and CMU prisms for the CMU bearing walls, all conformed to the project specified minimum 28-day compressive strengths requirements. Observations of reinforcement within each of the foundation systems for the project, (i.e., the cast-in-place conventional spread footings, cast-in-place foundation walls), along with the CMU walls, were completed by EEC personnel and reports were submitted to your attention during the appropriate periods as the results became available. Based on our ' review of the outlined observations, we believe the reinforcement within the foundation system and structural relative elements were placed and constructed in general compliance with the project plans and specifications and associated RF['s specific to the project. Observations for the structural steel erection, welding and bolt connections were completed by EEC's in-house ICC Bolt and Weld Inspector, and reports were submitted to your attention during the appropriate period as the results became available. Based on information received, we believe the structural steel, weld, and bolted connections were in general compliance with the project plans and specifications. . Earth Engineering Cnnsultents,LLC EEC Project No. 1124115 Compliance Summary CMT/QC Report ' July 9,20T3 Page 3 We appreciate lhe opportunity to be of service to you on this project. If you have any questions regarding this report or:if we can be of further service to you in any other way, please do not hesitate to contact us. ` Very tculy yours, Earth En ineering Consultants;LLC ��,p,00 RC�yFo ., - . •,��' ; � i� � ; 2 • . ; .o,�,�"�/�:� . �. �FFSS%ONA���� David A. Richer, P.E. Senior Geotechnical Engineer DAR/dla ec: Dohn Construction—Mr. John Rehmer: irefimer r,udolmconstruction.com Dohn Conshucrion—Mr. Mike Snow: msnow�udohncc�nstruction.com Dohn Construction—Ms. Mandy Evenson: me��ensonrUdohnconstru�tion.com NA, Inc.—Mr. Michael J. McDonald: mmcdonald�jvaiva.com Vaught Frye Larson Architects—Mr. Chris Aronson: Chris��'FLA.com � -. � July 9, 2013 � , EARTH ENGINEERING B Z Z O S 6 7 H CONSU LTANTS, LLC Dellenbach Motors 3111 South College Avenue Fort Collins, Colorado 80525 Attn: Mr. Mike Dellenbach(rmdellenbachna,aol.com) Re: Construction Observation and Testing—Final Compliance Summary Report Three(3)Proposed Building Additions for Dellenbach Motors 3111 South College Avenue Fort Collins, Colorado EEC Project No. 1124115 Mr. Dellenbach: As you aze aware, during various construction phases for the referenced project, Earth � Engineering Consultants (EEC) personnel, provided construction observation and testing services of requested items on a part-time/periodic, as-needed/on-call basis as scheduled by the project's general contractor, Dohn Construction, as per the project specifications. Bi- monthly construction materials testing (CMT)/quality control (QC) reports concerning the services provided by EEC personnel were submitted to the Dellenbach Motors, (the � owner's), Dohn Construction, (the general contractor), and to the project design team members' attention during the appropriate time period(s) as the test results became available. We have recently been asked by Mr. Mike Snow, project superintendent with Dohn Construction, to provide a summary and/or compliance letter addressing the services performed by EEC personnel regarding but not limited to the fbundation(s) and interior � floor slab(s) structural related elements, concrete masonry units (CMU) construction, and structural steel erection components for the three (3)additions. During the foundation construction phase for the referenced project, EEC personnel provided site observations and field density testing of on-site subsoils/replaced as engineered fill material within the three (3) foundation alignments, interior floor slab areas, backfill of foundation walls, and within on-site utility trenches, as recommended in the project-specific subsurface exploration report, (please refer to EEC's "Surface Exploration Report" dated August 20, 2012, Project No. ll22065). EEC personnel provided reinforcement observation of the foundation system(s) including the conventional spread 4398 GREENFIELD DRIVE WINDSOR, COLORADO 80550 (970) 545-3908 FAX (970) 663-0282 www.earth-engineering.com , B 12 0 5 6 7 8 Earth Engineering Consuhants,LLC EEC Project No. 1124115 Compliance Summary CMT/QC Report July 9,2013 Page 2 footings placed on either native subsoils and/or approved engineeredlcontrolled fill material, cast-in-place foundation walls, and interior floor slab. During the concrete masonry unit (CMU) wall construction phases, EEC personnel provided, on a periodic/special-inspection basis, reinforcement observations and observation/testing services of the CMiJ components, (i.e., mortar, grout and CMiJ block strength characteristics). EEC personnel also provided testing of all cast-in-place concrete for the foundation system(s), and interior floor slab(s), along with the exterior concrete flatwork areas. Based on our review of the outlined testing, as directed by the general contractor and completed by EEC personnel on an as-needed basis, the final field density test results within the building addition footprint(s), and associated exterior flatwork; along with site utilities, met the project compaction requirements for fill materials placed and compacted to redevelop the foundation bearing strata, interior floor slab elevations, backfill placed adjacent to foundation walls and within on-site utility trenches. Laboratory compressive strength tests completed on the cast-in-place concrete for all foundation elements and floor slabs, along with the mortar, grout, and CML1 prisms for the CMU bearing walls, all conformed to the project specified minimum 28-day compressive strengths requirements. Observations of reinforcement within each of the foundation systems for the project, (i.e., � the cast-in-place conventional spread footings, cast-in-place foundation walls), along with the CMiJ walls, were completed by EEC personnel and reports were submitted to your attention during the appropriate periods as the results became available. Based on our � review of the outlined observations, we believe the reinforcement within the.foundation system and structural relative elements were placed and constructed in general compliance with the project plans and specifications and associated RFI's specific to the project. Observations for the structural steel erection, welding and bolt connections were completed by EEC's in-house ICC Bolt and Weld Inspector, and reports were submitted to your , attention during the appropriate period as the results became available. Based on information received, we believe the structural steel, weld, and bolted connections were in general compliance with the project plans and specifications. / � F.2if�1 F11g1�0CIlI1Q(�.00SLL�fB�I$�Z.(.0 . EEC ProjectNo.,1124115 ' Compliance Summary CMT/QC Report July 9,2013 , Page 3 We appreciate the opporiunity to be of service to you on this project. If you have any quesrions regarding this report or if we can be of further service to you in any other way, please do not hesitate to contact us. Very truly yours, � , . • Earth En ineering Consultants,LLC �Q'p��AC�'�FO . - , ., . . � �� 'Z ? •� .� ,o90�,Fss o�`��� NA . David A. Richer, P.E. Senior Geotechnical Engineer ` DAR/dla . ' cc: Dohn Construction—Mr. John Rehmer:jrehmer�dohnconstruction.com . Dohn Construction—Mr. Mike Snow: msnow a,dohnconstruction.com Dohn Construction—Ms. Mandy Evenson: mevensonCc�dohnconstruction com JVA; Inc.—Mr, Michael J. McDonald: mmcdonald�jvajva.com Vaught Frye Larson Architects—Mr. Chris Aronson:Chris ,VFLA.com .