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Home My WebLink About730874.tiff RESOLUTION WHEREAS, pursuant to law, the Board of County Commissioners, Weld County, Colorado, is vested with the responsibility of administering the affairs of Weld County, Colorado, and WHEREAS, it has been determined by the Board that there is a shortage of power supply throughout the Weld County Courthouse and the Weld County Jail, due principally to overloading of existing circuits, and WHEREAS, the Board believes it to be in the best interest of the County to employ a qualified engineering firm to make a complete survey of the County's present existing:power supply and make the necessary recommendations to insure adequate power supply to meet all present and future county needs, and WHEREAS, the engineering firm of Nelson, Haley, Patterson and Quirk has submitted an agreement providing for engineering services relative to making such a survey and making report thereof to the Board. NOW, THEREFORE, BE IT RESOLVED, by the Board of County Commissioners, Weld County, Colorado, that said agreement providing for complete survey of the County's present and future electric power supply, copy of which is attached hereto and made a part hereof by reference, be, and it hereby is approved. BE IT FURTHER RESOLVED, that the Board be, and it hereby is authorized to execute the agreement as submitted and to make the same effective forthwith. The above and foregoing Resolution was, on motion duly made and seconded, adopted by the following vote on the 20th day of June, A. D. , 1973. BOARD OF COUNTY COMMISSIONERS WELD LINTY, COLORADO ,-- r ATT//EST: • � r r' (fin/ COUNTY L AND RECORDER AND CLERK TO THE BOARD BY: 7,/� ,, /24_„,,/ Deputy County Clerk APPROVED AS TO FORM: 'zeal 1 _f i TY ATTORN Y 730874 X4.99 3/4?9' j36,00L _.FATE OF COLORADO ( _ COUNT:' OF V.I. _ Ffed r:ih ia.c Clerk of t..e Bcard cf County Commission—s THE AMERICAN INSTITUTE OF ARCHITECTS JI IN 1 ?974 J COUNTYCLERR AND RECORDER By —_._.__—__Deputy ice.. AIA Document A101 Standard Form of Agreement Between Owner and Contractor where the basis of payment is a STIPULATED SUM Use only with the latest Edition of AIA Document A201, General Conditions of the Contract for Construction. This document has important legal consequences; consultation with an attorney is encouraged with respect to its completion or modification. AGREEMENT made this Tenth (10th) day of June in the year of Nineteen Hundred and Seventy—Pour BETWEEN Board of Weld County Commissioners Weld County Courthouse the Owner, and Greeley, Colorado 80631 Burch Electric Company the Contractor. 125 23rd Street Greeley, Colorado 80631 The Owner and the Contractor agree as set forth below. AIA DOCUMENT A101 • OWNER-CONTRACTOR AGREEMENT• SEPTEMBER 1967 EDITION •AIA® 1 ©1967 THE AMERICAN INSTITUTE OF ARCHITECTS, 1735 N. Y. AVE., N.W., WASH., D. C. 20006 '0.7 91,3+ ARTICLE 1 THE CONTRACT DOCUMENTS The Contract Documents consist of this Agreement, Conditions of the Contract (General, Supplementary and other Conditions), Drawings, Specifications, all Addenda issued prior to execution of this Agreement and all Modifications issued subsequent thereto. These form the Contract, and all are as fully a part of the Contract as if attached to this Agreement or repeated herein. An enumeration of the Contract Documents appears in Article 8. ARTICLE 2 THE WORK The Contractor shall perform all the Work required by the Contract Documents for Weld County Courthouse - Rehabilitation of Electrical Service Feeders and Branch Circuit Panels (Insert above the caption descriptive of the Work as used on other Contract Documents.) ARTICLE 3 ARCHITECT The Architect for this Project is CNC/NHPQ, Inc. Architects - Engineers - Planners 2021 Clubhouse Drive Greeley, Colorado 80631 ARTICLE 4 TIME OF COMMENCEMENT AND COMPLETION The Work to be performed under this Contract shall be commenced within fifteen days from date of contract or receipt of written order to proceed or on date stipulated in such order and completed within ninety consecutive calendar days. (Here insert any special provisions for liquidated damages relating to failure to complete on lime.) AIA DOCUMENT A101 • OWNER-CONTRACTOR AGREEMENT• SEPTEMBER 1967 EDITION • AIA® 2 O1967 THE AMERICAN INSTITUTE OF ARCHITECTS, 1735 N. Y. AVE., N.W., WASH., D. C. 20006 ARTICLE 5 CONTRACT SUM The Owner shall pay the Contractor for the performance of the Work, subject to additions and deductions by Change Order as provided in the Conditions of the Contract, in current funds, the Contract Sum of Sixteen Thousand Five Hundred Twenty-Four Dollars and Seventy-Seven Cents ($16,524.77) (State here the lump sum amount,unit prices,or both,as desired.) Base Bid $16,524.77 Total Contract Sum $16,524.77 ARTICLE 6 PROGRESS PAYMENTS Based upon Applications for Payment submitted to the Architect by the Contractor and Certificates for Payment issued by the Architect, the Owner shall make progress payments on account of the Contract Sum to the Contractor as pro- vided in the Conditions of the Contract as follows: On or about the tenth (10th) day of each month ninety (900) per cent of the proportion of the Contract Sum properly allocable to labor, materials and equipment incorporated in the Work and ninety (90%) per cent of the portion of the Contract Sum properly allocable to materials and equipment suitably stored at the site or at some other location agreed upon in writing by the parties, up to the first (1st) day of that month, less the aggregate of previous payments in each case; and upon Substantial Completion of the entire Work, a sum sufficient to increase the total payments to ninety—five (95%) per cent of the Contract Sum, less such retainages as the Architect shall determine for all incomplete Work and unsettled claims. (Here insert any provisions made for limiting or reducing the amount retained after the Work reaches a certain stage of completion.) AIA DOCUMENT A101 • OWNER-CONTRACTOR AGREEMENT• SEPTEMBER 1967 EDITION • AIA® 3 ©1967 THE AMERICAN INSTITUTE OF ARCHITECTS, 1735 N. V. AVE., N.W., WASH., D. C. 20006 ARTICLE 7 FINAL PAYMENT Final payment, constituting the entire unpaid balance of the Contract Sum,shall be paid by the Owner to the Contractor thirty (30) days after Substantial Completion of the Work unless otherwise stipulated in the Certificate of Substantial Completion, provided the Work has then been completed, the Contract fully performed, and a final Certificate for Payment has been issued by the Architect. ARTICLE 8 MISCELLANEOUS PROVISIONS 8.1 Terms used in this Agreement which are defined in the Conditions of the Contract shall have the meanings designated in those Conditions. 8.2 The Contract Documents,which constitute the entire agreement between the Owner and the Contractor,are listed in Article 1 and, except for Modifications issued after execution of this Agreement, are enumerated as follows: (List below the Agreement, Conditions of the Contract (General, Supplementary, and other Conditions), Drawings, Specifications, Addenda and accepted Alternates, showing page or sheet numbers in all cases and dates where applicable.) This Standard Form of Agreement Between Owner and Contractor, AIA Document A101, September 1967 Edition. The General Conditions of the Contract for Construction, AIA Document A201, Twelfth Edition, April 1970, consisting of Articles numbered 1 through 14, 18 pages. Project Manual for Weld County Courthouse - Rehabilitation of Electrical Service Feeders and Branch Circuit Panels, dated April 24, 1974, prepared by CNC/NHPQ, Inc, Architects - Engineers - Planners, 2021 Clubhouse Drive, Greeley, Colorado, 80631. Plans for Weld County Courthouse - Rehabilitation of Electrical Service Feeders and Branch Circuit Panels, dated March 1974, prepared by CNC/NHPQ, Inc, Architects - Engineers - Planners, 2021 Clubhouse Drive, Greeley, Colorado, 80631, consisting of sheets 1 of 9 through 9 of 9• Bid Proposal from Burch Electric Company signed by Claire D. Scott, Vice President, on May 28, 1974. The Contractor agrees to maintain insurance on his personnel, equipment, and operations in amounts acceptable to the Owner and to furnish Certificates of Insurance to the Owner and Architect/Engineer before commencement of work on the project. AIA DOCUMENT A101 • OWNER-CONTRACTOR AGREEMENT• SEPTEMBER 1967 EDITION • AIA® 4 ©1967 THE AMERICAN INSTITUTE OF ARCHITECTS, 1735 N. Y. AVE., N.W., WASH., D. C. 20006 This Agreement executed the day and year first written above. OWNER CONTRACTOR Board of Weld County Commissioners Burch Electric Company Weld County Courthouse 125 23rd Street Greeley, CC lorado 8`0663x1 Greele o orad C BY �4 /' ( {.'.1 C�k�zt F�1 BY Title Title �� BY .___ ` �� , BY Title .C/ �' � � F� � Title Date Dat /P j z7 AIA DOCUMENT A101 • OWNER-CONTRACTOR AGREEMENT• SEPTEMBER 1967 EDITION •AIA® 5 ©1967 THE AMERICAN INSTITUTE OF ARCHITECTS, 1735 N. Y. AVE., N.W., WASH., D. C. 20006 X�j ENGINEERING /�� lam', / � " v �� 1( jNELS0N, HALEY, PATTERSON and QUIRK, INC. CONSULTANTS 2021 CLUBHOUSE DRIVE GREELEY, COLORADO 80631 303: 356-4+444 August 7, 1973 Mr. Charles Clementz Weld County Courthouse . Greeley, Colorado 80631 Dear Mr. Clementz: SUBJECT: ENGINEERING STUDY, ELECTRICAL SYSTLM - WELD COUNTY COURTHOUSE In accordance with a request made in Mr. Glenn K. Billings' letter of June 15, 1973, we have performed an engineering study of the existing ' electrical system at the courthouse. Five (5) copies of the study are enclosed herewith. The report lists the most pressing electrical prob- lems and recommended solutions. We trust that the information is in sufficient detail to enable the County,to make a sound judgement in budgeting improvements. However, if there are any questions or if we may be of further service to you, please feel free to contact us. We appreciate the opportunity to serve you in this matter. We wish to thank you and members of your staff for your assistance in obtaining information and the loan of your reference plans and also for your guidance in inspecting the building. Very truly yours, NELSON, HALEY, PATTERSON and QUIRK, Inc. Lpo.c.4"—PCDave R. Towne, Chief Architectural Engineering • Services Department DRT:jkm Enclosures (5) OFFICES IN GREELEY, DENVER, COLORADO SPRINGS. GRAND JUNCTION, COLORADO; RIVERTON. WYOMING REPORT • on INVESTIGATION, ANALYSIS AND ESTIMATE for ELECTRICAL SYSTEM WELD COUNTY COURTHOUSE GREELEY, COLORADO • August 7, 1973 by NELSON, HALEY, PATTERSON and QUIRK, INC. Architects - Engineers - Planners Greeley, Colorado TABLE OF CONTENTS Page A. Summary 1 B. Cost Estimate 2 C. Existing Electrical System 3 D. Deficiencies and Code Violations 4 E. Recommendations for Corrective Action 5 F. Future Construction 7 A. SUMMARY 1. The main problem area in the existing-electrical system relates to the four existing lighting panels in the corridor of each floor. Problems are: a. Overload on common feeder which serves all four panels plus attic panels. b. Obsolete panels having "live" fronts (exposed busbars and open type switches). c. Overloads on individual branch circuits. d. - Improper overcurrent protection, or complete lack of same for panel feeder. e. Overload on existing 300 ampere feeder breaker at distribution equipment. f. Code violations relating to items "a" through "e" above. 2. Those portions of the existing branch circuit wiring and lighting fixtures which are 55 years of age require replacement and/or rehabilitation. a. Portions of the building have been remodeled and wiring in these areas is in acceptable condition. -1- B. COST ESTIMATE 1. Install new feeder to separately feed the third and fourth floor panels, complete with all re- quired cutting, patching, and access doors: $ 3,850 a. Overtime labor ($) 750 2. Remove existing "live-front" panel interiors from four panelboards and replace with new panelboards: 3,200 a. Overtime labor ($) 700 3. Provide new suspended ceiling in first floor corridor ceiling (approximately 3,900 square feet): a. Lay-in type with exposed tees $5,000 • or b. Concealed spline type 7,450 4. Remove approximately 22,000 lineal feet of existing branch circuit conductors, repull new conductors, and replace approximately 270 wiring devices:* 16,000 5. Replace sockets and fixture wire in approxi- mately 150 incandescent lighting fixtures:* - 750 • • TOTAL (utilizing concealed spline type ceiling): $ 32,700 • ($) Overtime labor changes will be necessary if outages cannot be permitted during normal work week. (*) It is recommended that a firm bid price be taken based on estimated quantities for items No. 4 and 5, and further that unit prices be requested for underrun or overrun. Exact quantities to be replaced or rehabilitated cannot be determined until work items are disassembled. Note: If item No. 2 work is not performed concurrently with item No. 1, add 20$ to item No. 1. -2- C. EXISTING ELECTRICAL SYSTEM 1. Incoming Service a. The courthouse-jail complex electrical service is supplied by a cross-alley transformer crib. An overhead loop attaches to the south exterior wall of the jail building. Service is extended to a main distribution board located in the basement boiler room of the jail building. This distribution board is a switch-fuse type. b. Service voltage is 120/208 volt, 3-phase, 4-wire, wye-connected and is metered with one meter, rate 16, by Home Light and Power Company. This rate appears .to be the most feasible for this - application. c. The courthouse is served by means of two 3" conduits routed exposed at the ceiling of a utility tunnel which connects the basement areas of the jail and courthouse. These two 3" conduits terminate at a circuit breaker type sub-distribution board (located in the courthouse basement) from which all electrical loads in the courthouse are served. 2. Courthouse Building Wiring a. Feeder circuit breakers and wiring to air-handling equipment is adequate for existing loads. b. The 300 ampere circuit breaker, which serves a riser feeder on which four (4) lighting panelboards are connected, is overloaded. The four panels are located facing into the corridor on each floor and were installed with the original construction. An additional (fifth) panelboard was added in the attic and is connected to this same riser feeder, which contributes further to the overload condition. c. Due to the nature of the building construction and the lack of available branch circuits at local panelboards, requirements for new receptacle or special outlet circuits have been served by routing "BX" metallic armored cable from the attic down mechani- cal ducts or duct chases. In some cases these runs extend all the way down to the first floor, resulting in excessive voltage drop. d. Conversion of the four existing lighting panelboards from appli- cation with a single-phase system to a three-phase "wye" system was made in 1964. -3- • e. Existing branch circuit wiring (to individual receptacle and lighting outlets) utilizes the originally installed black enamel rigid conduit and rubber-insulated wire. Some branch conductors have been replaced with new wire. D. DEFICIENCIES AND CODE VIOLATIONS 1. Corridor Lighting Panelboards and Associated Feeder a. Corridor lighting panels contain "live-front" type bus and open type knife switches which are hazardous to both operating person- nel and the general public. The risk of accidental shorts result- ing in a serious electrical fire is quite high. If such a short were to occur under the present conditions, a prolonged disruption of the entire building could result. • b. The 3-phase cable feeder is connected on a "feed-through" arrange- ment with sub-feed fuses in only two legs and does not have the required over-currect protection for the third leg. A fire could result in the event of an overload or short on this unprotected leg. c. Use of 30 ampere fuses in the lighting panelboards does not provide the proper over-current protection for #12 branch circuit wiring. Fuses should be 20 amperes. They have been oversized to hold under overload conditions. Overheating and fire could result, particularly in the case of the older branch circuit conductors. d. The space clearance for feeder cables and access to busbar lugs does not meet present day requirements. Some overheating has occurred due to oxidizing of the contact surfaces at the lugs. e. The manner in which the sub-feeder cable serving an attic panel from the fourth floor panel routes across the face of the live- front busing is a code violation and very poor practice. 2. Branch Circuit Wiring a. Approximately 75% of the branch circuit conductors originating at the four corridor lighting panelboards are the original rubber- insulated wire. This wire is 55 years old and in poor condition. Where such conductors serve ceiling mounted incandescent lighting fixtures, the heat trapped within the ceiling canopy has caused the rubber to become so brittle that any service work, even re- lamping, at the fixture can cause insulation to crack off, resulting in a short. All of the original wire should be removed and replaced with new conductors. -4- b. Type MC (metal-clad "BX") cable was routed inside ducts in many cases as an expedient to reach a location for a new outlet. c. The practice of originating branch circuits from panelboards located in the attic to feed outlets throughout all floors, has created a very jumbled condition. 3. Wiring Devices a. Approximately 200 non-grounding type duplex receptacles are still in use. These should be replaced with new, grounding type re- ceptacles. b. Approximately 60 old type push-button. light switches are still in use. These should be replaced with new quiet type switches. .New device plates will also be required to match the modern type switch configuration. c. Replacement of all the obsolete wiring devices would be achieved most economically if done at the same time the branch circuit wire was replaced, since most of these devices would be removed for the purpose of access to repull wire. 4. Lighting Fixtures a. Approximately 200 incandescent lighting fixtures are in use. Most of these date to the original construction, and are therefore 55 years old. They are in good condition except for the sockets and fixture wiring. Sockets have become loose causing difficulty when relamping. Wrapped-paper type sockets and rubber-insulated fixture wire should be replaced. This has already been done in some cases. b. Fluorescent lighting fixtures are in good condition and are suitable for continued use. E. RECOMMENDATIONS FOR CORRECTIVE ACTION 1. Corridor Lighting Panelboards and Associated Feeder a. The existing overload condition on the riser feeder serving four corridor panels will be corrected by serving the third and fourth floor panels with a separate new conduit and wire feeder. This feeder will originate at a new circuit breaker in the existing sub-distribution panel in the courthouse basement. Suggested routing will be across the basement ceiling, up to first floor ceiling inside the toilet south of the elevator, thence exposed at the first floor corridor ceiling to a point north of the -5- • telephone PBX operator. At this point, the concrete wall will be drilled and the new conduit routed concealed up an existing chase. Hinged access doors will be added at the first, second and third floor chases to facilitate this new installation work and future servicing inside this chase. These doors will face into vault storage areas. Conduit will be exposed on the west side of two records vaults on the third floor to a point where it enters the rear of the third floor panel. (1) This new feeder will double the existing capacity. At double the present load capacity, all existing loads plus the pro- jected load growth for the next two years should be handled with ease. After.relocation of many offices to the new proposed County Services Building, a reduction in electrical -demand in the courthouse is anticipated. • (2) It is recommended that a new accessible type suspended ceil- ing be installed in the center portion of the first floor to conceal the new conduit, as well as existing piping. This proposed ceiling area is approximately 17' x 87' in the central hall area plus the two 11' x 23' entries at both the north and south ends. b. All four "live-front" lighting panelboards should be replaced with new "dead-front" circuit breaker type panels. The new panels may • be installed inside the existing panel enclosures and the existing glass doors and bronze trims reused in place. The new panels will include lockable steel doors. Some form of etching of the glass will be desirable for the sake of appearance. (1) The new panels will each contain 42 circuits, which will provide approximately ten additional branch circuits per floor. However, if the attic panels were to be abandoned, the gain would be offset by the loss of the attic panel .capacity. (2) It is recommended that a status quo position be taken regarding the attic panels and that the need to replace these be re-evaluated after two years in the light of educed load requirements. c. All code violations listed under C-1, a, b, c, d and a will be resolved if the recommendations listed under D-1, a and b are implemented. '2. Branch Circuit Wiring a. Replace all existing rubber-insulated branch circuit wiring with new conductors having type TW, THW, or THWN insulation as required. -6- Divide loads so as to eliminate need for oversizing of branch circuit protection. b. The "BX" installed inside ducts and down duct chases should be replaced or abandoned. However, consideration should be given to delaying action on this item until completion of the proposed services building. See "Future Construction," item F-2, a. 3. Wiring Devices a. Replace all obsolete and worn wiring devices with new specification grade type meeting all code requirements for grounding and ampere rating. Provide new device plates as, required. 4. Lighting Fixtures a. Replace all original equipment paper-insulated lamp sockets and rubber type fixture cord in all incandescent lighting fixtures. F. FUTURE CONSTRUCTION 1. New Services Building a. The design for the proposed new services building will most likely involve removal of the existing overhead electrical construction (poles, etc. ) in the alley. Assuming this is correct, a new pad-mount transformer will be installed near the southwest corner of the courthouse and a new incoming electri- cal service and new main distribution panelboard provided. This will be required to accommodate increased interrupting capacity requirements associated with the new pad-mount trans- former. . 2. Courthouse a. The relocation of many of the service functions to the new services building will modify existing receptacle requirements. • Change of usage of some areas may eliminate need for certain outlets now fed with "BX". Possible remodel plans within the courthouse may permit much more feasible solutions to problems of concealing new conduits. Under present conditions, it is very difficult to install new conduits without excessive damage to interior finishes. b. When chiller capacity is established in the new services building, a line will be extended to the courthouse for improvement of the courthouse cooling system. Electrical power for increased motor loads in the courthouse will be required at that time. -7- Hello