HomeMy WebLinkAboutVIII-06 Approve 2025 Budget Amendment - City Hall Dome Restoration ProjectCity Council Memorandum
To:Mayor Fasbender & City Councilmembers
From:City Administrator Dan Wietecha
Date:May 5, 2025
Item:2025 Budget Amendment: Wood Decking and Structural Supports
Council Action Requested:
Approve amendment to the 2025 Budget: $116,700 for wood decking, structural supports, and
outrigger repair as part of the City Hall Historic Renovation project.
Background Information:
As contractor Renaissance Roofing is moving into the repair of the central dome, and now able
to expose and examine the wood support structure, they have found need for new wood decking
and support for the water table (ledge), new wood framing and waterproofing behind the band,
repair or replacement of outriggers, and miscellaneous decking repair.
Renaissance Roofing has provided a quote of $116,700, reviewed by our architects at Miller
Dunwiddie, to perform the necessary work. Note that this is less than the per square foot unit
pricing for unexposed wood repair that had been included in contract.
Financial Impact:
$116,700 –within project contingency
Committee Discussion:
Not applicable
Attachment:
Change Order #6
VIII-06
Project: Change Order Number:
Project Number:
Attn:
Contract Date:
The Contract is proposed to be changed as follows:
Water Table
A) Install ¾” plywood on skyward facing ledge (see detail 1, page 1)
B) Replace up to 2 outriggers per 8 linear feet, cut to the appropriate size as needed in compromised areas.
C) Install kickers as needed, cut to the appropriate size, to reinforce outriggers that will be replaced.
D) Anchor outriggers and kickers to the existing framework where feasible.
E) Install Simpson straps to replace missing or failed wire supports, as needed.
Assuming 330 SF wood replacement with wood blocking included 43,785.00$
*Note the decking price unit initially provided is $295/SF without wood blocking - total of $97,350
Above Water Table
F)
Assuming 250 SF wood replacement with wood blocking included $ 53,515.00
*Note the decking price unit initially provided is $295/SF without wood blocking - total of $73,750
Main Dome
G)Replace rotten/deteriorated decking on the main dome on an as-needed basis, based on field observation.
Assuming 20 SF wood replacement on entire dome using cut offs from water table and backup.
Note: this only includes the main part of the center dome up to Horizontal Band #2 on main dome.
*Note the decking price unit initially provided is $295/SF - total of $5900 5,400.00$
Additional Items
H)Additional scaffold rental to accommodate access for the above repair scope
Pricing Breakdown:
$ 116,700.00
Labor to remove & install wood as needed 102,700.00$
Approximately 4 man crew - 2 weeks of work
Extended Scaffold Rental 8,500.00$
Tools, Supplies, Disposal 5,500.00$
2231 Hawkey Drive
4/4/2025
Date Date Date
Jake Verhagen
Name (print) Name (print) Name (print)
By (signature ) By (signature ) By (signature)
Belvidere, IL
Address Address Address
Owner Representative (Firm Name)Contractor (Firm name) Owner(Firm name)
The contract sum at time of this change order 3,389,910.00$
The contract sum will be Increased by this change Order in the amount of 116,700.00$
The new contract sum total, including this change order 3,506,610.00$
Renaissance Roofing, Inc.
The net change by previously authorized change orders 85,115.00$
Carpentry Support
Total amount: 116,700.00$
The original contract sum, including all alternates was 3,304,795.00$
The following selective repairs are necessary to stabilize the watertable shelf and provide adequate support for our new sheet metal assemblies.
This scope does not include full replacement of the existing framing or support below the watertable. Above the watertable, new framing will be
added around the circumference of the dome, as there is currently no blocking in place. See line items below for scope.
Install new framing above the watertable shelf (at horizontal band #3/4) to provide anchoring for new sheet metal assembly, where
no blocking currently exists. See detail 1 & 2, page 1
Kelly Mastin | Miller Dunwiddie
12/01/23
101 4th Street East Date:04/04/25
Hastings, MN 55033 COH2101
314/772.6222; Fax: 314/772.6224
Hastings City Hall: Historic Roofing Repair 6R
CHANGE ORDER FORM
815/547.1725; Fax: 815/547.1425
www.HistoricExteriors.com
BELVIDERE/CHICAGO OFFICE 1-800-699-5695 ST. LOUIS OFFICE
P.O. Box 5024, Rockford, IL 61125 2306 Lemp Avenue
2231 Hawkey Drive, Belvidere, IL 61008 St. Louis, MO 63104
VIII-06
RENAISSANCE
HISTORIC EXTERIORS
aeiviaere,il
Address
By({Signature )
2231 HAWKEY DRIVE,
BELVIDERE, IL 61108
RENAISSANCE
HISTORIC EXTERIORS
HASTINGS
CITY HALL
101 4TH STREET EAST,
HASTINGS, MN 55033
SCALE: AS NOTED
DRAWN BY: BW
CHECKED BY: REN TEAM
DATE: 3/31/2025
DRAWING TITLE:
PAGE NUMBER:
MAIN DOME-
HB #3/4
CARPENTRY
NOTES:
1 NEW CARPENTRY: HB #3/4
SCALE: 3" = 1'-0"1
NEW 3/4" PLYWOOD SHELF CONT.
AROUND ENTIRE DOME. FASTENED
USING SCREWS OF VARIOUS LENGTHS.
SLOPED 1/8" PER FOOT
NEW PLYWOOD
BLOCKING
NEW 2X BLOCKING SPACED ROUGHLY 16" O.C.
ATTACHED TO EXISTING BACKUP USING
SCREWS OF VARIOUS LENGTHS
NEW 3/4" PLYWOOD UPPER SHELF
TO MATCH SLOPE OF ORIGINAL
EXISTING CONDITIONS NOT SHOWN
FOR CLARITY. UP TO 2 OUTRIGGERS
PER 8' TO BE REPLACE, AS NEEDED
NEW 2X SLOPED BLOCKING SPACED
ROUGHLY 16" O.C. TYP AROUND
ENTIRE CIRCUMFERENCE OF DOME.
USED TO CREATE SLOPE TO
PLYWOOD UPPER SHELF
EXISTING DECKING BEHIND
NEW WOOD ASSEMBLY
NEW PLYWOOD ADDED
FOR SOLID BACKING OF 2X
BLOCKS. AREAS CURVED
TO MATCH RADIUS OF
DOME
NEW PLYWOOD ABOVE 2X
BLOCKS
DRAWING NOTES:
- VARIOUS SIZE OF SCREWS TO BE USED
FOR NEW CARPENTRY ASSEMBLY
- DO NOT SCALE FOR DIMENSIONS
OUTLINE OF METAL SHOWN.
ATTACHMENT METHODS TBD AND WILL
BE SHOWN IN FUTURE SHOP DRAWINGS
NEW CARPENTRY: HB #3/4 ISO
SCALE: N.T.S 2
GENERAL OUTLINE OF
METAL SHOWN. OVERALL
SHAPE TO MATCH ORIGINAL
OUTLINE OF CARPENTRY
SHOW. NEW CARPENTRY
AROUND ENTIRE
CIRCUMFERENCE OF DOME
EXISTING
RIB BASE
EXISTING
RIBS
EXISTING DECKING SHOWN
DECKING REPAIRS,
AS NEEDED ON
MAIN DOMEVIII-06
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