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HomeMy WebLinkAbout2020-552-E AMS-HH Architecture Whiited upfit change order 6Revised 11/19 ORANGE COUNTY CHANGE ORDER REQUEST NORTH CAROLINA ______________________________________________________________________________________________________________ Date: 08/20/2020 Project: Upfit for Whitted Building Change Order No. 6 Department: AMS Department Address: PO Box 8181, Hillsborough NC 27278 Project: Whitted Building Contractor: HH Architecture Contractor Address: 1100 Dresser Court, Raleigh NC 27609 Effective date of original contract: This change order increases decreases the contract time by days. Check here if no impact to contract time . Will this change order impact the date of substantial completion? Yes No. If yes, the amended date of substantial completion is: _______________________________________________________________________________________________________________ Full Description of Change: See attached Admendment #6 dated August 14,2020 Reason for Change: Complete Structural Design & Construction documents to achieve permit compliance. (Upfit to the Whitted Building for the County Managers office) _______________________________________________________________________________________________________________ Original contract sum: $ 36,900.00 Contract sum prior to this change order: $ 65,900.00 Amount of this change order: $ 8750.00 Total sum of the contract including this change order: $ 74,650.00 _______________________________________________________________________________________________________________ This change order is executed to amend the contract time and/or contract sum. It shall not be construed to impact the original contract, project, services, or work in any other manner. All other terms of the Original Contract remain in effect. Approved and executed this 20th day of August, 2020. _______________________________ _____________________________ _____________________________ Contractor Owner Architect (when retained) By:____________________________ By:___________________________ By:___________________________ DocuSign Envelope ID: 8F87A0BE-1C54-4748-B7E6-A0F7CAA7E363 Revised 11/19 DocuSign Envelope ID: 8F87A0BE-1C54-4748-B7E6-A0F7CAA7E363 Revised 11/19 ORANGE COUNTY—DEPARTMENT USE ONLY _____________________________________________________________________________________________________ Party/Vendor Name: HH Architecture Party/Vendor Contact Person: Kristen Hess (khess@HH-Arch.com) Contact Phone: 919-828-2301 Party/Vendor Address: 1100 Dresser Court City Raleigh State: NC Zip: 27609 Department: AMS Amount: $8750.00 Purpose: Complete Structrual Design & Construction documents to achieve permit compliance for the Whitted Building Upfit Budget Code(s): 61370035-870000-10069 Vendor # 63766 (N/A if new vendor) Vendor is a BOCC consultant? Yes No Contract Type: (Check one) New Renewal Amendment Effective Date Approved by Board Yes No Agenda Date: This agreement is approved as to technical form and content and I as Department Director affirmatively state work on this project has not been initiated prior to execution of the agreement: Department Director’s Signature ________________________________________ Date: ________ Agreements for emergency services or repair are not subject to the above affirmation. If services related to this agreement have already begun or been completed please briefly describe the nature of the emergency condition that was addressed: Risk Management This agreement is approved for sufficiency of insurance standards, specifications, and requirements: Office of the Risk Management Officer___________________________________ Date: _________ Financial Services This instrument has been pre-audited in the manner required by the Local Government Budget and Fiscal Control Act: Office of the Chief Financial Officer ____________________________________ Date: _________ Legal Services This agreement is approved as to legal form and sufficiency: Office of the County Attorney __________________________________________Date: ________ Clerk to the Board Received for record retention: All Docusign contracts must be copied to Sherri Ingersoll upon completion: singersoll@orangecountync.gov The following signature block is for hard copies only and is not required for Docusign contracts: Office of the Clerk to the Board __________________________________________Date:_________ DocuSign Envelope ID: 8F87A0BE-1C54-4748-B7E6-A0F7CAA7E363 8/21/2020 8/21/2020 8/25/2020 8/25/2020 Page 1 of 2 August 14, 2020 Steven Arndt, MBA, CFM, PEM Asset Management Services Director Orange County Government 300 W Tryon Street, Rm 240 PO Box 8181 Hillsborough, NC 27278 Re: Orange County – Emergency Office Upfit – Amendment #6 HH project number: 19-099 Dear Steven, HH Architecture is pleased to present this Amendment #6 for professional architectural services for the emergency office upfit project. Amended Scope Pursuant to the findings and recommendations in the Orange County Whitted Building Structural Report, dated August 7, 2020, this amendment proposes design services for reinforcing the existing floor structure to meet the load capacities required by code. For the purposes of this proposal, the proposed construction is anticipated to consist of reinforcing existing wood beams and girders with structural steel channels and additional 2x12 members. Tasks and Deliverables: • Complete structural design and construction documents to achieve permit compliance with the North Carolina Existing Building Code for deficient floor areas outlined in previous report. • Construction Administration services for added scope pursuant to basic services in original proposal, dated November 6, 2019. Includes review of shop drawings and one (1) site visit by engineering consultant. Consultants For Structural Engineering, we propose: Lynch Mykins Structural Engineers, PC Contact: Collette Ramirez, PE 301 N. West Street, Suite 105 Raleigh, NC 27603 Phone: (919) 782-1833 DocuSign Envelope ID: 8F87A0BE-1C54-4748-B7E6-A0F7CAA7E363 Page 2 of 2 Schedule We understand this work needs to secure permitting approval as soon as possible to maintain the overall construction schedule. We propose the following duration to expedite the process: Construction Documents 2 weeks Permit Review/Contractor Pricing 2 weeks * *Beyond HH Architecture Control Fee For the scope detailed above, we propose an additional lump sum fee of Eight Thousand Seven Hundred and Fifty Dollars ($8,750). Exclusions Excluded Services, to be billed as Additional Services only if required: 1. This scope does not include structural analysis or reinforcing design for areas outside of the Level 2 - Alterations in the current permit drawings for the upfit. These include Suites 211, 220/230, 250, and Corridor 200H. All other areas are beyond this scope. The Design Team recommends the County commission further study of the Suite 210 area to assess compliance from the previous upfit. 2. Any significant redesign to the existing primary building structure. Fee assumes reinforcing only. 3. It is anticipated that limited demolition drawings, if any, are required for structural reinforcing design and construction documents. Demolition drawings for the basement area are therefore limited to general architectural plans, as needed. Any further, extensive demolition drawings are beyond this scope. 4. Any additional design for plumbing, mechanical, electrical, fire alarm, and fire protection sprinklers are beyond this scope. For the purposes of this proposal, it is assumed all work to access existing structure around building systems will be reinstalled in place, and additional drawings are not required. Please let me know if you need additional information. We are excited to continue our work for the County on this project. Kristen M. Hess, AIA, LEED AP Principal DocuSign Envelope ID: 8F87A0BE-1C54-4748-B7E6-A0F7CAA7E363 August 7, 2020 Nicholas Zastrow, AIA HH Architecture 1100 Dresser Court, Raleigh, NC 27609 Re: Orange County Whitted Building Office Upfit LM Project No: R20.168 Dear Nick, Below are our findings from our limited observations and structural analysis of the existing Orange County Whitted Building for the scope of the office upfit: Background: On July 30th, 2020, Lynch Mykins performed a site visit at 300 W Tryon Street in Hillsborough, North Carolina. The purpose of that visit and this report is to describe our assessment of the existing conditions of the areas proposed for office upfit and provide recommendations for strengthening the existing first elevated floor framing as determined by our limited structural analysis. General Description: The existing structure consists of two stories of clinic and office space for the Orange County Health Department. It is understood that the structure was completed in 1950 based on Orange County GIS records, and the original structure was reportedly designed as a school according to employees of the health department. The existing southwest corner of the structure was analyzed by William D. Bilger, PE, and the safe live load was determined to be 30psf. This was documented in a drawing by Kenneth Redfoot, RA, of Corley Redfoot Architects. The building structure, including Area 2 as indicated on the attached plan, appears to consist of load bearing triple-wythe brick walls and round HSS steel columns supporting wood beams and wood girders. Wood beams are spaced at approximately 6 feet on center and the floor decking consists of tongue-and-groove wood members. Area 1 consists of two channels thru bolted to the wood beams as described above. Area 3 consists of wide- flange steel beams directly below the wood framing and additional HSS square steel columns. Areas 4 and 5 consist of 2x12’s spaced at approximately 2’-0” on center bearing on wood girders and steel columns. DocuSign Envelope ID: 8F87A0BE-1C54-4748-B7E6-A0F7CAA7E363 Observations and Recommendations: For office, vestibule, and storage loading, reinforcing will be required in areas not previously reinforced. Per the North Carolina Existing Building Code 807.4, “existing structural elements supporting any additional gravity loads as a result of alterations shall comply with the international building code,” except structural elements whose stress is not increased by more than ten percent. Based on the assumption that the building was originally designed as a school, the applicable live load would have bee n 40 psf. The proposed new uses as office, storage, and vestibule exceed the load by more than ten percent. Therefore, the floor must be capable of safely supporting the new loads in accordance with the code. Our recommendations for reinforcing floors included in this scope of this project are provided below. Because our analysis only included the portions of the existing building for this project, we recommend a full conditions assessment of the entire building to verify that other portions of the building have sufficient capacity to support their uses per the North Carolina Existing Building Code and International Building Code. Areas with existing reinforcing included in this project scope are acceptable for new loading conditions per North Carolina Existing Building Code 807.4; existing structural elements have been analyzed to support new loading and are satisfactory. New loading conditions consist of 50psf live load for office spaces, 80psf live load for vestibule spaces, and 125psf live load for storage spaces. As noted previously in letter by William D. Bilger, PE, the Area 2 can only support a safe live load of 30psf. Per our analysis, Areas 4 and 5 can support a safe live load of 40psf. In Area 2, it is recommended to reinforce the 5x13 wood beams and 4x8 wood girder with steel channels on both sides connected with thru bolts and field spliced for ease of installation. At Area 5, it is recommended to sister one additional 2x12 member to each existing member. In Area 4, it is recommended to sister an additional 2x12 member to each side of each 2x12. In Areas 4 and 5, it is recommended to reinforce the 4x8 wood girders with steel channels on both sides connected with thru bolts and field spliced for ease of installation. See attached PDF of plan locations of required reinforcing and a sketch of the proposed reinforcing detail. Limitations of Report: The professional services for this limited structural condition survey and report have been performed, the findings obtained, and the conclusions drawn in accordance with generally accepted engineering principles and practices. The scope of this limited condition survey and report is limited to the structural issues previously identified above. This evaluation is not intended to be a complete and comprehensive analysis of the structure nor DocuSign Envelope ID: 8F87A0BE-1C54-4748-B7E6-A0F7CAA7E363 is it intended to represent a complete inspection to determine building code non-compliances nor the presence of hazardous materials. Lynch Mykins Structural Engineers, P.C., is not responsible for the conclusions, opinions, or recommendations made by others, based on the data presented in this report. The conclusions contained herein are based solely on the information obtained during the performance of this limited visual inspection and represent only a professional opinion based on this information and experience with similar conditions. Sincerely, LYNCH MYKINS STRUCTURAL ENGINEERS L. Taylor Forbis, EI Design Engineer DocuSign Envelope ID: 8F87A0BE-1C54-4748-B7E6-A0F7CAA7E363 DocuSign Envelope ID: 8F87A0BE-1C54-4748-B7E6-A0F7CAA7E363 DNUPDNDNDNUPFLEX ROOMFLEX ROOMFLEX ROOMMEETING ROOMSTORAGETOILETMEETING ROOMHEALTH SERVICESSUITEI.T. CLOSETMENWOMENSTAIRSTAIRAV ROOMCORRIDORCORRIDORCORRIDOREXTENTS OF EXISTINGREINFORCEMENT WITHIN THEOFFICE UPFIT SCOPEEXTENTS OF NO EXISTINGREINFORCEMENT WITHINTHE OFFICE UPFIT SCOPERECOMMEND REINFORCINGWOOD BEAMS WITH CHANNELSON EITHER SIDE OF GIRDERCONNECTED WITH THRU BOLTS.FIELD-SPLICED. SEE SCHEMATICDETAIL BELOWRECOMEND SISTERINGONE ADDITIONAL 2x12 TOEACH EXISTING 2x12RECOMMEND SISTERING 1-2x12 TOEACH SIDE OF EACH EXISTING 2x12RECOMMEND REINFORCING LOWWOOD GIRDER WITH CHANNELSON EITHER SIDE OF GIRDERCONNECTED WITH THRU BOLTS.FIELD-SPLICED. SEE SCHEMATICDETAIL ABOVERECOMMENDED CHANNEL SCHEMATIC DETAILRECOMMEND REINFORCING LOWWOOD GIRDER WITH CHANNELSON EITHER SIDE OF GIRDERCONNECTED WITH THRU BOLTS.FIELD-SPLICED. SEE SCHEMATICDETAILAREA 1AREA 2AREA 3AREA 4AREA 5DocuSign Envelope ID: 8F87A0BE-1C54-4748-B7E6-A0F7CAA7E363 07/08/2020 Insurance Management Consultants, Inc. P.O. Box 2490 Davidson NC 28036 Rebekah Rosko (704) 799-1600 (704) 799-2955 cert@imcipls.com HH Architecture, PA 1100 Dresser Ct Raleigh NC 27609 RLI Insurance Company 13056 20/21 A PSB0005258 07/13/2020 07/13/2021 2,000,000 1,000,000 10,000 2,000,000 4,000,000 4,000,000 A PSB0005258 07/13/2020 07/13/2021 2,000,000 A PSW0003050 07/13/2020 07/13/2021 1,000,000 1,000,000 1,000,000 A Professional Liability RDP0040358 07/13/2020 07/13/2021 Per Claim $1,000,000 Aggregate $2,000,000 Orange County P.O. Box 8181 Hillsborough NC 27278 SHOULD ANY OF THE ABOVE DESCRIBED POLICIES BE CANCELLED BEFORE THE EXPIRATION DATE THEREOF, NOTICE WILL BE DELIVERED IN ACCORDANCE WITH THE POLICY PROVISIONS. 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