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Home My WebLink AboutResolution No. 4303, Change Order `7 for the Lower Yard Vehicle Maintenance and HRDC Bus Barn.pdf Commission Memorandum REPORT TO: Honorable Mayor and City Commission FROM: James Goehrung, Director of Facility Services Chuck Winn, Assistant City Manager SUBJECT: Approve Resolution 4303 authorizing the City Manager to sign Change Order #17 for the Lower Yard Vehicle Maintenance and HRDC Bus Barn for mechanical and plumbing modifications and sub-base improvements for the site road system. MEETING DATE: December 13, 2010 AGENDA ITEM TYPE: Consent RECOMMENDATION: Approve Resolution 4303 authorizing the City Manger to sign Change Order #17 in the amount of $5,873.05, for the Lower Yard Vehicle Maintenance and HRDC Bus Barn. The changes include: CP #37 modifications to the radiant heat floor system, $5,608.15; CP #47 credit for the removal of the mechanical screens, ($540.00); CP #51 relocation of the air compressor, $804.90. BACKGROUND: This change order includes three mechanical and plumbing related items. CP #37 is for modifications to the radiant heat floor system. The original layout of the system ran through the central office area of the building. A question was raised by the owner as to what that extra heat gain would do for the offices. The lines were modified so that they did not loop through the offices. This change required the addition of two new supply lines and manifolds for the floor system. The original change request has been reduced in cost and the change is being processed with the reduced amount. Staff has directed the architects on the project to address this change and some other mechanical related changes that have been brought up by the contractor as an error and omission on the part of the mechanical engineer and any follow up will be addressed in future changes. 57 CP #47 is a credit for the removal of the mechanical screens for the rooftop mechanical equipment. The screens are standard aesthetic requirements for rooftop systems requested by the Planning Department. Because the units are not visible from the ground and are already enclosed in an acceptable visual enclosure the Planning Department was willing to waive the installation of additional screens. The result was a credit to the project. CP #51 is for the relocation of the vehicle maintenance shop air compressor. The compressor was originally shown to be located in the building mechanical room in the central office area. The confined space in the mechanical room would not allow easy access to the unit for servicing. Also the noise from the compressor would be disruptive for the offices. The City worked out a deal with HRDC to locate the compressor in the HRDC bus bays in exchange for an air line they HRDC could access from their garage. The additional charge covers some plumbing, electrical and a support pad for the compressor to sit on and to attach the unit to the wall. UNRESOLVED ISSUES: The owner’s representatives are negotiating with the subcontractors, the mechanical and electrical engineer, regarding some design oversights and who specifically will cover some of the added costs that have been requested by the contractor. ALTERNATIVES: As suggested by the City Commission. FISCAL EFFECTS: The costs associated with the items in this change order will be paid out of the project contingency fund. Through Change Order #17, the current balance for the Pre-Construction Change Orders is $5,465.62. The balance for the 12% Project Contingency Change Order is $67,932.98. The summary of activity for the contingency fund is shown below. Pre-Construction Change Orders $15,650.00 CO #4 Fire Alarm Design ($1,994.50) CO#4 Welding Vent Hood ($5,000.00) CO#5 Hose Bibs ($913.00) CO#5 Utility Separation ($522.50) CO#9 Electrical Panel and Heat Tape ($1,369.10) CO#15 Fire Alarm/Smoke Detector ($385.28) TOTAL Pre–Const CO Balance Remaining $5,465.62 Project Contingency $128,501.70 Change Order #1 HRDC $0 Change Order #2 Asbestos Remediation ($3,294.32) Asbestos Disposal ($1,545.50) ($4,839.82) 58 Chance Order #3 Added Site Work ($2,362.30) Change Order #4 Costs above estimate for Welding Hood (revised) Included in the Pre-Const COs ($2,560.23) Change Order #5 Hose Bibs and Utility Separation costs addressed in Pre-Construction Change Order budget $0 Change Order #6 HRDC $0 Change Order #7 Modify the height of the parts counter and install a sliding glass window between the two work areas. ($1,097.80) Change Order #8 Revise foundation sub-grade preparation due to discover of unstable soils; Replace fill material in clarifiers; Add a second conduit run for phone and data. ($4,897.27) Change Order #9 Electrical panel and heat tape Addressed in the Pre-Construction Change Order budget $0 Change Order #10 Grout plug on clay pipe in storm water tank pit, $980.38; add three steel bollards for building protection $389.82 ($1,370.19) Change Order #11 Add an additional shutoff air valve for the compressed air valve, $424.60; Remove alternate No. 5 for the installation of the skylights, ($12,200.00). $11,775.40 Change Order #12 Additional footing, foundation, and reinforcement based on final building structural analysis. ($6,059.27) Change Order #13 Structural fill for footings, foundation, road and parking areas. ($12,170.40) Change Order #14 Sump and strainer valve ($1,815.55) Unit heater change ($2,167.72) Revised fresh air duct ($3,758.10) Shop ceiling fan ($12,537.92) Rainwater tank slab ($670.48) Sand storage light ($4,168.68) ($25,118.45) Repay from streets for light $4,168.68 Repay from streets for electrical $1,675.00 ($19,274.77) 59 Change Order #15 ADA Shower ($1,112.10) Lift Air Supply ($1,003.20) Recirc Pump 228.00 Impound Lot Road ($3,772.78) Washer Dryer Hook-up ($1,818.41) Revise Ceiling Height ($110.00) Remove Fire Wall $437.39 ($7,151.10) Change Order #16 HRDC $0 Change Order #17 Radiant Manifold $5,608.15 Mechanical Screens ($540.00) Compressor Relocation $804.90 $5,873.05 Non-budget changes Pre-bid items charged to project $4,687.92 Expenditures to Date $60,568.72 Contingency Balance Remaining $67,932.98 Attachments: Change Order Form #17 Change Order Resolution # 4303 Report compiled on: December 1, 2010 60 1 of 2 COMMISSION RESOLUTION NO. 4303 A RESOLUTION OF THE CITY COMMISSION OF THE CITY OF BOZEMAN, MONTANA, APPROVING ALTERATION/MODIFICATION OF CONTRACT WITH BN BUILDERS, BOZEMAN, MONTANA. WHEREAS, the City Commission did, on the 5th day of October 2009, authorize award of the bid for the Construction of the Vehicle Maintenance Building and HRDC Bus Barn to BN Builders, Bozeman, Montana; and WHEREAS, Section 7-5-4308, Montana Code Annotated, provides that any such alterations or modifications of the specifications and/or plans of the contract be made by resolution; and WHEREAS, it has become necessary in the prosecution of the work to make alterations or modifications to the specifications and/or plans of the contract. NOW, THEREFORE, BE IT RESOLVED by the City Commission of the City of Bozeman, Montana, that the proposed modifications and/or alterations to the contract between the City of Bozeman, a municipal corporation, and BN Builders, Bozeman, Montana, as contained in Change Order #17, attached hereto, be and the same are hereby approved; and the City Manager is hereby authorized and directed to execute the contract change order for and on behalf of the City; and the City Clerk is authorized and directed to attest such signature. 61 Resolution No. 4303 Change order #17 Page 2 of 2 PASSED AND ADOPTED by the City Commission of the City of Bozeman, Montana, at a regular session thereof held on the 13th day of December, 2010. __________________________________________ JEFFREY K. KRAUSS Mayor ATTEST: ________________________________________ STACY ULMEN, CMC City Clerk APPROVED AS TO FORM: __________________________________________ GREG SULLIVAN City Attorney 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80