HomeMy WebLinkAboutResolution No. 4277, Change order 12, 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 4277 authorizing the City Manager to sign
Change Order #12 for the Lower Yard Vehicle Maintenance and HRDC Bus Barn for additional
footing, foundation, and reinforcement work based on the final steel building design.
MEETING DATE: September 13, 2010
AGENDA ITEM TYPE: Consent
RECOMMENDATION: Approve Resolution 4277 authorizing the City Manager to sign
Change Order # 12 for the Lower Yard Vehicle Maintenance and HRDC Bus Barn for
additional footing, foundation, and reinforcement work based on the final steel building design,
in the amount of $5,834.27. The additional foundation components will be split 50/50 with
HRDC and the city will pay an additional $225.00, (CP #19), for added reinforcement under the
vehicle maintenance lift. Total cost for the city on this change order is $6,059.27.
BACKGROUND: The two service bay areas of the building for the city and for HRDC are
prefabricated metal buildings. The general configuration of these types of buildings is a post and
beam skeleton with a metal skin. The posts, or columns, sit on footings which bear the bulk of
the building weight. The details and dimensions of the required building for the project were
outlined in the bid documents. Once the project was bid and we knew who the building
manufacturer was, the design details of the building foundation components could be engineered.
After the bids were received, the bids were reviewed the contractor who in turn selected the
prefabricated building and took them on as their sub-contractor. The design team reviewed the
drawings supplied by the building manufacturer. An analysis of the building load calculations
required some modifications to the pier and footing sizes for the building.
The net result of the final calculations and design was an increase in the number and the size of
the footings and piers. The additional costs are not for the design, but for the additional
materials and labor. The added work and materials included earthwork, concrete form placement
55
and finishing, concrete, concrete pumping, and added metal reinforcement. Total cost for this
additional work is $11,893.54.
Included in this cost is the additional reinforcement needed under the slab area where one of the
larger vehicle maintenance lifts will be placed. The added reinforcement under this area of the
city side of the building is $225.00. This portion of the cost will be paid by the city and the
remaining balance of $11,668.54 will be split with HRDC.
UNRESOLVED ISSUES: No others related to this proposed Change Order.
ALTERNATIVES: As suggested by the City Commission.
FISCAL EFFECTS: The costs associated with the redesigned and reengineered footing
and foundation will be paid out of the project contingency fund. The summary of activity 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)
TOTAL Pre–Const CO Balance Remaining $5,850.90
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)
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
56
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)
Non-budget changes Pre-bid items charged to project ($3,310.93)
Expenditures to Date ($14,722.41)
Contingency Balance Remaining $113,779.29
Attachments: Change Order Form #12
Change Order Resolution # 4277
Report compiled on: August 16, 2010
57
Commission Memorandum
REPORT TO: Honorable Mayor and City Commission
FROM: James Goehrung, Director of Facility Services
Chuck Winn, Assistant City Manager
SUBJECT: Approve Resolution 4277 authorizing the City Manager to sign
Change Order #12 for the Lower Yard Vehicle Maintenance and HRDC Bus Barn for additional
footing, foundation, and reinforcement work based on the final steel building design.
MEETING DATE: September 13, 2010
AGENDA ITEM TYPE: Consent
RECOMMENDATION: Approve Resolution 4277 authorizing the City Manager to sign
Change Order # 12 for the Lower Yard Vehicle Maintenance and HRDC Bus Barn for
additional footing, foundation, and reinforcement work based on the final steel building design,
in the amount of $5,834.27. The additional foundation components will be split 50/50 with
HRDC and the city will pay an additional $225.00, (CP #19), for added reinforcement under the
vehicle maintenance lift. Total cost for the city on this change order is $6,059.27.
BACKGROUND: The two service bay areas of the building for the city and for HRDC are
prefabricated metal buildings. The general configuration of these types of buildings is a post and
beam skeleton with a metal skin. The posts, or columns, sit on footings which bear the bulk of
the building weight. The details and dimensions of the required building for the project were
outlined in the bid documents. Once the project was bid and we knew who the building
manufacturer was, the design details of the building foundation components could be engineered.
After the bids were received, the bids were reviewed the contractor who in turn selected the
prefabricated building and took them on as their sub-contractor. The design team reviewed the
drawings supplied by the building manufacturer. An analysis of the building load calculations
required some modifications to the pier and footing sizes for the building.
The net result of the final calculations and design was an increase in the number and the size of
the footings and piers. The additional costs are not for the design, but for the additional
materials and labor. The added work and materials included earthwork, concrete form placement
58
and finishing, concrete, concrete pumping, and added metal reinforcement. Total cost for this
additional work is $11,893.54.
Included in this cost is the additional reinforcement needed under the slab area where one of the
larger vehicle maintenance lifts will be placed. The added reinforcement under this area of the
city side of the building is $225.00. This portion of the cost will be paid by the city and the
remaining balance of $11,668.54 will be split with HRDC.
UNRESOLVED ISSUES: No others related to this proposed Change Order.
ALTERNATIVES: As suggested by the City Commission.
FISCAL EFFECTS: The costs associated with the redesigned and reengineered footing
and foundation will be paid out of the project contingency fund. The summary of activity 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)
TOTAL Pre–Const CO Balance Remaining $5,850.90
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)
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
59
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)
Non-budget changes Pre-bid items charged to project ($3,310.93)
Expenditures to Date ($14,722.41)
Contingency Balance Remaining $113,779.29
Attachments: Change Order Form #12
Change Order Resolution # 2277
Report compiled on: August 16, 2010
60
1 of 2
COMMISSION RESOLUTION NO. 4277
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 #12,
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. 4277 Change order #12
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 September, 2010.
__________________________________________
JEFFREY K. KRAUSS
Mayor
ATTEST:
________________________________________
STACY ULMEN, CMC
City Clerk
APPROVED AS TO FORM:
__________________________________________
GREG SULLIVAN
City Attorney
62