11-133.00 Spokane Rock Products: Indiana Ave ExtensionSpokane
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DEPARTMENT OF PUBLIC WORKS
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CHANGE ORDER TO CONSTRUCTION CONTRACT NO: - 14-Atz -
?ROJECT: Indiana Avenue Extension Project CONTRACT DATE: 4/19/2011
3ONTRACTOR: Spokane Rock Products, Inc CHANGE ORDER NO: 12
- APITAL IMPROVEMENT PROJECT NO: 0112
31D NO.: 1 j-7wl
DESCRIPTION OF CHANGES
This Change Order pays for ha/aseparate items. Bid Item CO 12 - 1 corrects a math error in CO 3, Bid Item Al for Mobilization.
Bid Item CO 12 - 2 pays for installation of a traffic rated sewer service cleanout at the NE corner of Mission & Flora. (Mission Sta 34 +10, 401T)
Bid Item CO 12 - 3 pays for grade revisions at 1603 N Flora; Bid Item CO 12 - 4 pays for additional construction staking at 1603 N Flora.
Bid Item CO 12 - 5 pays for installation of a segmental block wall along the ROW line at 1603 N Flora.
See attached Indiana Extension Plan Sheet 17, with CO 12 Revisions and Change Order 12 Specifications
Item No
Description
CO 12 -1
CO3 - Al MOBILIZATION
CO 12 - 2
TRAFFIC RATED SEWER CLEANOUT
CO 12 - 3
SWALE GRADING
CO 12 - 4
SWALE & WALL SURVEY
CO 12 - 5
MODULAR BLOCK RETAINING WALL
Unit
Quanti
Unit Price
Total
LS
1
$775.00
$775.00
EA
1
$300.00
$300.00
LS
1
$1,000.00
$1,000.00
LS
1
$400.00
$400.00
SF
82
$36.40
$2,984.80
Total Amount of this Change Order( incl. Tax):
$5,459.80
SUBSTANTIAL COMPLETION
Original Date: 7/12/2011 Prior to this Change Order: 8/5/2011 Including this Change Order: 8/5/2011
Original Working Days: 50 Working Days Added by this CO: 0 Working Days including this CO: 65
THESE CHANGES RESULT IN THE FOLLOWING ADJUSTMENTS OF TOTAL CONTRACT PRICE:
ORIGINAL TOTAL CONTRACT AMOUNT $ 1,049,282.20
.. ....................................................................................................................... ...............................
TOTAL PRIOR CONTRACT CHANGE ORDER AMOUNT $ 108,218.33
................................................................................................ ...............................
TOTAL CONTRACT PRICE PRIOR TO THIS CHANGE ORDER $ 1,157,500.53
NET THIS CHANGE ORDER $ 5,459.80
......................................................................................................................... ...............................
TOTAL CONTRACT AMOUNT INCLUDING THIS CHANGE ORDER $ 1,162,960.33
CONTRACTOR ACCEPTANCE: «V, y
The contractor hereby accepts this adjustment under the terms of the original contract for all work perfomed.
RECOMMENDED BY:
APPROVED BY:
APPROVED BY:
11
DATE:
DATE: 7' / Z ZZ
DATE: e
DATE: 9
ATTACHMENTS:
Distribution:
ORIGINALS TO: Contractor, City of Spokane Valley Clerk's Office, PW Project File
COPIES TO: PW Project File P Public Works /Purchaing /c0 (9/2612007)
Coi I -i3�
1 -09.7 MOBILIZATION
Measurement
"CO3 —A1 Mobilization" shall not be measured.
Payment
The lump sum contract price for "Modular CO3 —Al Mobilization" shall be for all
preparatory work and operations required for Change Order 3.
1 -05.4 ROADWAY AND UTILITY SURVEYS
"Swale and Wall Survey" shall not be measured.
2 -03.5 Payment
Payment will be made in accordance with Section 1 -04.1 for:
"Swale and Wall Survey ", per lump sum.
The lump sum unit contract price for "Swale and Wall Survey ", shall include all costs for
restaking the Swale J and for construction staking necessary for installation of the
Segmental Retaining wall at 1603 N. Flora Road.
2 -03 ROADWAY EXCAVATION AND EMBANKMENT
2 -03.4 Measurement
"Swale Grading" shall not be measured.
2 -03.5 Payment
Payment will be made in accordance with Section 1 -04.1 for:
"Swale Grading ", per lump sum.
The lump sum unit contract price for "Wall Grading ", shall include all costs for loading,
haul and disposal of all excess swale excavation; furnishing, placing and compacting all
embankment; and all additional cost in excess of the unit price for re- grading swale;
reconfiguring the rip -rap pad; and trimming back the storm sewer outfall pipe.
Indiana Avenue Extension Project CO 12 Specifications
7 -18 SIDE SEWERS
7 -18.4 Measurement
"Traffic Rated Sewer Cleanout" shall be measured per each installed.
7 -18.5 Payment
Payment will be made in accordance with Section 1 -04.1 for:
"Traffic Rated Sewer Cleanout ", per each.
The unit contract price for "Traffic Rated Sewer Cleanout ", per each, shall include the
cost of furnishing and installing the cast iron ring and lid; and the 8" high x 2' -0"
diameter concrete collar in accordance with Spokane County Standard Plan U -13.
8 -24 SEGMENTAL CONCRETE MASONRY RETAINING WALL
8 -24.1 Description
The segmental concrete masonry retaining wall work includes, but is not limited to:
construction staking, excavation, furnishing and installing leveling pad; furnishing and
installing modular block concrete standard and cap units, furnishing and installing
crushed surfacing top course backfill; in accordance with the Plans and Specifications,
or as designated by the Engineer.
8 -24.2 Materials
Modular Block Units shall be Windsor Stone by Oldcastle or approved equal and shall
have the following nominal dimensions: Height 4 ", Face Length 12 ", Width 7 -12 ". The
modular block units shall have a back lip connection system and shall be gray or
charcoal tone in color. All units used shall be homogenous color and finish.
Base leveling pad material and backfill shall conform to Section 9- 03.9(3) crushed
surfacing base course (CSBC).
8 -24.3 Construction Requirements
8- 24.3(1) Quality Assurance
The completed modular block wall shall meet the following tolerances:
1. Wall batter shall be —3/4" per each course. (The width of the back lip.)
2. The exterior slope plane and grade in the finished surface of the wall shall
be within 0.05' in 20 feet of length.
2
Indiana Avenue Extension Project CO 12 Specifications
8- 24.3(2) Excavation
The Contractor shall stake the location and elevation of the wall. Prior to excavation, the
contractor shall verify with the Engineer final grades and elevations so that the
completed modular block retaining wall shall fit proposed final grades. Excavation shall
be to the verified lines and grades.
8- 24.3(3) Leveling Pad
The leveling base pad shall have a minimum thickness of 4 inches and be compacted to
a minimum of 95% maximum of modified Proctor. The leveling pad shall be prepared to
insure full contact to the base surface of the modular block units.
8- 24.3(4) Modular Block Unit Installation
The first course of segmental concrete units shall be placed on the leveling pad and
checked for alignment and grade. Position vertically adjacent segmental concrete units
as recommended by the Manufacturer. Whole, or cut units shall be erected with running
bond approximately centered on units above and below. Cap units shall be glued to
underlying units with an adhesive recommended by the modular block unit manufacturer.
8- 24.3(5) Modular Block Unit Backfill
Wall backfill placement and compaction shall be completed in 4 inch lifts after each
course is laid. Topsoil shall be placed over the backfill to match the cap rock elevation
as shown on the appropriate section in the plans.
8 -24.4 Measurement
Modular Block Retaining Wall shall be measured by the installed square foot of vertical face.
8 -24.5 Payment
Payment will be made in accordance with Section 1 -04.1 for:
"Modular Block Retaining Wall ", per square foot.
The unit contract price for "Modular Block Retaining Wall ", per square foot shall include
the cost of construction staking; loading, haul and disposal of all excavation; furnishing
and installing leveling pad and backfill, furnishing and installing modular block units and
cap stone adhesive.
3
Indiana Avenue Extension Project CO 12 Specifications