The URL can be used to link to this page

Home My WebLink AboutDOCUMENT 660 Community Dr Construction Observation & Testing 2017-06-05 June 5, 2017 RLH Engineering, Inc. 541 East Garden Drive, Unit S Windsor, Colorado 80550 Attn: Mr. Chuck Jordan (cjordan@rlhengineering.com) Owner’s Representative for EVRPD Re: Construction Observation and Testing Services – Submittal No. 11 Proposed Estes Valley Community Center – North of Existing Aquatics Center 660 Community Drive - Southeast Corner of Manford Drive and Community Drive Estes Park, Colorado EEC Project No. 1164046 Mr. Jordan: As requested, during the period May 8 through May 20, 2017, Earth Engineering Consultants, LLC (EEC) personnel provided construction observation and testing services for the proposed Estes Valley Community Center expansion project currently under construction at 660 Community Drive in Estes Park, Colorado. The services provided during the referenced period were on a part-time/on-call as-needed basis and included observation and field density testing of storm sewer backfill as described herein, observations of slab-on-deck (SOD) reinforcing steel, periodic site observations during the various stages of concrete masonry unit (CMU) wall construction for various wall alignments as presented herein, observations of non-destructive testing (NDT) services, along with testing of cast-in-place concrete for the referenced project. The results of the site observations and testing services completed by EEC personnel during the referenced period are included with this report. Field Density Testing and Observation Services During the referenced period, EEC personnel performed field density tests on water line and storm sewer alignment backfill material as described herein, which were placed and compacted prior to and/or during our site visits. The field density tests were completed at random locations and elevations within the areas tested and were performed in general accordance with ASTM Specification D6938. The field density test results and approximate location of each test completed during the referenced period are shown on the attached summary sheet and the 4396 G REENFIELD D RIVE W INDSOR, C OLORADO80550 (970) 545-3908 FAX (970) 663-0282 www.earth-engineering.com Earth Engineering Consultants, LLC EEC Project No. 1164046 Estes Valley Community Center – Estes Park, Colorado June 5, 2017 Page 2 associated site diagrams. The field density test results conformed to the project specific compaction requirement of at least 95% or 98% of standard Proctor maximum dry density (ASTM D698), as required. Reinforcement Observations During the referenced period, EEC personnel conducted site visits on May 11 and 12, 2017, to perform visual observations of the reinforcing steel placed within portions of the building’s SOD, at the gridlines identified on the enclosed “color-coded/highlighted” site diagram, prior to placement of concrete. The reinforcement for the portion of the SOD as indicated herein was placed in general accordance with the Metal Deck Slab Schedule detail 10/S530 along with details and notes presented on pages S103, S390, S500, S530, and S531 of the structural drawings. Any discrepancies of reinforcement during the various daily site visits were brought to the attention of the project’s construction management consultant, and the reinforcement subcontractor, during the initial site visit and corrections/modifications were addressed accordingly prior to placement of concrete. Clearances and lap lengths, where applicable, were checked and appeared to meet the minimum requirements. The horizontal and vertical reinforcement for the portion of the SOD as noted herein and observed by EEC personnel on the dates indicated, appeared to be in general accordance with details presented on the structural drawings prepared by Martin and Martin Consulting Engineers, dated January 12, 2017, and the shop drawings prepared by Barton Supply, dated February 23, 2017. Concrete Masonry Unit (CMU) Wall Construction Observations During the referenced period, EEC personnel, on a periodic basis, observed portions of the reinforcing steel and other structural related elements during the 8 to 12-inch by 16-inch standard block CMU wall construction at the gridlines identified on the enclosed “color- coded/highlighted” site diagram. Layout of the CMU wall alignments were provided by others. During each daily site visit, (May 8, 9, 11, 12, and 15 through 17, 2017), EEC personnel observed CMU wall construction along the various wall alignments and recorded approximate Earth Engineering Consultants, LLC EEC Project No. 1164046 Estes Valley Community Center – Estes Park, Colorado June 5, 2017 Page 3 gridline locations, elevations/courses for each day, along with the observed horizontal and vertical reinforcement requirements, as well as grout placement as needed. The vertical reinforcement for the various walls, in general, consisted of one (1) #5 rebar spaced 32 to 48 inches on-center, along with additional #5 rebar positioned at each end of walls, at each corner, and along each side of openings, control joints and/or expansion joints. The horizontal reinforcement consisted of 9-gauge “ladder-type” reinforcement spaced every 16-inches on- center full-height of each CMU wall. At the various bond beam locations, below and above windows, beam pockets, and at openings, where noted on the structural drawings, EEC personnel noted the reinforcement consisted of two (2) or one (1) continuous #5 within the fully-grouted cell alignments. The horizontal and vertical reinforcement for the portions of the CMU walls and observed by EEC personnel during the referenced timeframe on a periodic basis as noted herein appeared to be in general accordance with details presented on the structural drawings and/or as referenced on the approved shop drawings. During the grouting operations, EEC personnel observed grout placement within the low lifts. Lap lengths, where applicable, were checked and appeared to meet the minimum required lengths. Non-Destructive Testing (NDT) Services During the referenced period EEC’s in-house certified bolt and weld inspector conducted observations on May 17, 2017 to perform load testing of 3 (three) post installed epoxied anchor rods, one (1) at each location, located at the Upper Level South at approximate Gridlines NJ by E13.4, E10.3, and E8. The post installed anchors were pulled to 5000 pounds of tension and held for 30 seconds. The tested post installed anchor rods held the required load without failing. Based on the tensioning performed, the post installed anchor rods were in general accordance with the requirements of the electronic transmission (e-mail) from the project’s structural engineering consultant, Martin & Martin dated April 3, 2017. Testing of Cast-in-Place Concrete During the referenced period, EEC personnel observed and tested Portland cement concrete delivered to the site for placement as indicated on the enclosed daily reports for the referenced project, (please refer to Set Nos. 34 through 37). Field testing performed on the plastic concrete EARTH ENGINEERING CONSULTANTS, LLC SUMMARY OF FIELD DENSITY TESTS Project Name:New Community CenterProject No: 1164046 Location: Estes Park, ColoradoDate: May 2017 Proctor DesignationA Maximum Dry Density (pcf)126.5 Optimum Moisture Content (%)10.0% Required Moisture VarianceN/A Required Percent Compaction95% Laboratory MethodASTM D-698 Compliance with Field Test Results Project Specs Approximate Test Location / Notes Moisture %Comp. Elev. / Lift Material Percent Dry (Pass / (Pass / No.(Proctor)MoistureDensity Fail)Fail) 2885/81Storm Sewer - See Diagram-2.0A8.2%125.0-1.8%99%N/APass 2895/82Storm Sewer - See Diagram-1.0A8.8%123.8-1.2%98%N/APass 2905/83Storm Sewer - See Diagram-2.0A7.9%123.6-2.1%98%N/APass 2915/84Storm Sewer - See Diagram-1.0A8.7%124.2-1.3%98%N/APass 2925/91Storm Sewer - See Diagram-2.0A9.9%122.1-0.1%97%N/APass 2935/92Storm Sewer - See Diagram-1.0A10.5%120.20.5%95%N/APass 2945/93Storm Sewer - See Diagram0.0A11.8%122.71.8%97%N/APass Sheet 2Sheet 3 Sheet 4Sheet 5 Field Density Test Location Diagram New Community Center - Estes Park, Colorado EEC Project #: 1164046 Storm Sewer Sheet 1 of 5 EARTH ENGINEERING CONSULTANTS, LLC Field Density Test Location Diagram New Community Center - Estes Park, Colorado EEC Project #: 1164046 Storm Sewer Sheet 2 of 5 EARTH ENGINEERING CONSULTANTS, LLC Slab-on-Deck ReinforcementObservation 5-11 & 5-12-17 Legend EARTH ENGINEERING CONSULTANTS, LLC May 2017 EEC Project #: 1164046 Reinforcing Steel Observation Diagram New Community Center - Estes Park, Colorado CMU ReinforcementObservation 5/8, 5/9, 5/11, Legend 5/12, & 5/15 thru 5/17/17 EARTH ENGINEERING CONSULTANTS, LLC May 2017 EEC Project #: 1164046 Reinforcing Steel Observation Diagram New Community Center - Estes Park, Colorado EARTH ENGINEERING CONSULTANTS, LLC REPORT OF CAST-IN-PLACE CONCRETE TESTS GENERAL INFORMATION Placement Date:5/12/2017Test No.:34 Placement Location:Slab-on-Metal Deck - Grid Lines B, 6.5 Concrete Supplier:Martin MariettaType of Placement:Pump Ticket Number:39008602Truck Number:1764 Mix Code:N4200 Water Added on Site:None Batch Time:7:22 AMSample Time:8:20 AMYards:10of180 Required 28 Day Compressive Strength (psi):4000EEC Technician:JB Comments: FIELD TEST DATA TESTRESULTSSPECIFICATIONS Slump (in)ASTM C1431.5" Air Content (%)ASTM C2312.5% Unit Weight (pcf)ASTM C138144.0---- Concrete Temperature (deg F)ASTM C10646890° Max Air Temperature at Placement (deg F)40---- Comments: COMPRESSIVE STRENGTH OF FIELD CAST TEST SPECIMENS (ASTM C39/C31) Average MaximumCylinderCylinderCompressiveCompressive SpecimenDateAgeApplied LoadHeightDiameterAreaFailureStrengthStrength 2 NumberTested(days)(lbs)(in)(in)(in)Type(psi)(psi) 34B05/19/177482208412.57Shear38403840 Project:New Community Center - Estes Park Recreation and Park District Project Number:1164046Report Distribution: RLH Engineering - Chuck Jordan: cjordan@rlhengineering.com Adolfson & Peterson Construction - Mr. Tom Purcell tpurcell@a-p.com Adolfson & Peterson Construction - Mr. Quintin Quimby qquimby@a-p.com Adolfson & Peterson Construction - Mr. Jason Heustis jheustis@a-p.com Adolfson & Peterson Construction - Mr. Les Fernando lfernando@a-p.com Adolfson & Peterson Construction - Mr. Josh Cohen jcohen@a-p.com OLC - Robert McDonald rmcdonald@olcdesigns.com OLC - Laine McLaughlin lmclaughlin@olcdesigns.com Martin & Martin - Ed Sabia esabia@martinmartin.com Martin Marietta EARTH ENGINEERING CONSULTANTS, LLC REPORT OF CAST-IN-PLACE CONCRETE TESTS GENERAL INFORMATION Placement Date:5/12/2017Test No.:35 Placement Location:Slab-on-Metal Deck - Grid Lines D.5, 7.5 Concrete Supplier:Martin MariettaType of Placement:Pump Ticket Number:39008606Truck Number:1763 Mix Code:N4200 Water Added on Site:None Batch Time:8:29 AMSample Time:9:10 AMYards:50of180 Required 28 Day Compressive Strength (psi):4000EEC Technician:JB Comments: FIELD TEST DATA TESTRESULTSSPECIFICATIONS Slump (in)ASTM C1435.5" Air Content (%)ASTM C2312.3% Unit Weight (pcf)ASTM C138145.2---- Concrete Temperature (deg F)ASTM C10646490° Max Air Temperature at Placement (deg F)53---- Comments: COMPRESSIVE STRENGTH OF FIELD CAST TEST SPECIMENS (ASTM C39/C31) Average MaximumCylinderCylinderCompressiveCompressive SpecimenDateAgeApplied LoadHeightDiameterAreaFailureStrengthStrength 2 NumberTested(days)(lbs)(in)(in)(in)Type(psi)(psi) 35B05/19/177546908412.57Shear43504350 Project:New Community Center - Estes Park Recreation and Park District Project Number:1164046Report Distribution: RLH Engineering - Chuck Jordan: cjordan@rlhengineering.com Adolfson & Peterson Construction - Mr. Tom Purcell tpurcell@a-p.com Adolfson & Peterson Construction - Mr. Quintin Quimby qquimby@a-p.com Adolfson & Peterson Construction - Mr. Jason Heustis jheustis@a-p.com Adolfson & Peterson Construction - Mr. Les Fernando lfernando@a-p.com Adolfson & Peterson Construction - Mr. Josh Cohen jcohen@a-p.com OLC - Robert McDonald rmcdonald@olcdesigns.com OLC - Laine McLaughlin lmclaughlin@olcdesigns.com Martin & Martin - Ed Sabia esabia@martinmartin.com Martin Marietta EARTH ENGINEERING CONSULTANTS, LLC REPORT OF CAST-IN-PLACE CONCRETE TESTS GENERAL INFORMATION Placement Date:5/12/2017Test No.:36 Placement Location:Slab-on-Metal Deck - Grid Lines AG, A4 Concrete Supplier:Martin MariettaType of Placement:Pump Ticket Number:39008612Truck Number:1764 Mix Code:N4200 Water Added on Site:None Batch Time:9:58 AMSample Time:10:40 AMYards:110of180 Required 28 Day Compressive Strength (psi):4000EEC Technician:JB Comments: FIELD TEST DATA TESTRESULTSSPECIFICATIONS Slump (in)ASTM C1432.5" Air Content (%)ASTM C2312.4% Unit Weight (pcf)ASTM C138145.6---- Concrete Temperature (deg F)ASTM C10646590° Max Air Temperature at Placement (deg F)61---- Comments: COMPRESSIVE STRENGTH OF FIELD CAST TEST SPECIMENS (ASTM C39/C31) Average MaximumCylinderCylinderCompressiveCompressive SpecimenDateAgeApplied LoadHeightDiameterAreaFailureStrengthStrength 2 NumberTested(days)(lbs)(in)(in)(in)Type(psi)(psi) 36B05/19/177541608412.57Shear43104310 Project:New Community Center - Estes Park Recreation and Park District Project Number:1164046Report Distribution: RLH Engineering - Chuck Jordan: cjordan@rlhengineering.com Adolfson & Peterson Construction - Mr. Tom Purcell tpurcell@a-p.com Adolfson & Peterson Construction - Mr. Quintin Quimby qquimby@a-p.com Adolfson & Peterson Construction - Mr. Jason Heustis jheustis@a-p.com Adolfson & Peterson Construction - Mr. Les Fernando lfernando@a-p.com Adolfson & Peterson Construction - Mr. Josh Cohen jcohen@a-p.com OLC - Robert McDonald rmcdonald@olcdesigns.com OLC - Laine McLaughlin lmclaughlin@olcdesigns.com Martin & Martin - Ed Sabia esabia@martinmartin.com Martin Marietta EARTH ENGINEERING CONSULTANTS, LLC REPORT OF CAST-IN-PLACE CONCRETE TESTS GENERAL INFORMATION Placement Date:5/12/2017Test No.:37 Placement Location:Slab-on-Metal Deck - Grid Lines B, 5 Concrete Supplier:Martin MariettaType of Placement:Pump Ticket Number:39008614Truck Number:1737 Mix Code:N4200 Water Added on Site:None Batch Time:10:35 AMSample Time:11:45 AMYards:130of180 Required 28 Day Compressive Strength (psi):4000EEC Technician:JB Comments: FIELD TEST DATA TESTRESULTSSPECIFICATIONS Slump (in)ASTM C1436" Air Content (%)ASTM C2312% Unit Weight (pcf)ASTM C138145.2---- Concrete Temperature (deg F)ASTM C10647090° Max Air Temperature at Placement (deg F)65---- Comments: COMPRESSIVE STRENGTH OF FIELD CAST TEST SPECIMENS (ASTM C39/C31) Average MaximumCylinderCylinderCompressiveCompressive SpecimenDateAgeApplied LoadHeightDiameterAreaFailureStrengthStrength 2 NumberTested(days)(lbs)(in)(in)(in)Type(psi)(psi) 37B05/19/177436408412.57Shear34703470 Project:New Community Center - Estes Park Recreation and Park District Project Number:1164046Report Distribution: RLH Engineering - Chuck Jordan: cjordan@rlhengineering.com Adolfson & Peterson Construction - Mr. Tom Purcell tpurcell@a-p.com Adolfson & Peterson Construction - Mr. Quintin Quimby qquimby@a-p.com Adolfson & Peterson Construction - Mr. Jason Heustis jheustis@a-p.com Adolfson & Peterson Construction - Mr. Les Fernando lfernando@a-p.com Adolfson & Peterson Construction - Mr. Josh Cohen jcohen@a-p.com OLC - Robert McDonald rmcdonald@olcdesigns.com OLC - Laine McLaughlin lmclaughlin@olcdesigns.com Martin & Martin - Ed Sabia esabia@martinmartin.com Martin Marietta