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HomeMy WebLinkAboutCO 01C.O. #1 CITY OF RENTON Page 1 of 1 Public Works Department CHANGE ORDER NO. 1 CONTRACT CHANGE ORDER AGREEMENT CONTRACT: South Lake WA Roadway Improvements (Garden Ave. Widening) CAG -12 -021 CONTRACTOR: ICON Materials SUMMARY OF PROPOSED CHANGE: Reason /Justification: The Contract documents proposed storm drainage improvements in the vicinity of the existing "Gluelam" PSE transmission pole located just south of the Logan Ave. N. -N. Park Dr. /Garden Ave. -Lake Washington Blvd. N. intersection on the east side of Garden Avenue (approximately Station 47 +52.4, 15' RT). The proposed change revises the drainage system at this location to avoid conflict with the pole during construction. The recommendation includes elimination of CB #5 (84" diameter catch basin), shifting the adjacent inlet #4 south approximately 6 to 7 feet away from the pole and connection of this inlet to CB #3 (to the south) with ductile iron pipe. Refer to the attached revised Drawings No. 15 and No. 18 for the proposed changes. Contract Change: Eliminate CB #5 (84" diameter catch basin) and add 96 LF of 8" diameter ductile iron pipe from the relocated inlet #4 to CB #3. Modify Drawings No. 15 (Roadway Plan) and No. 18 (Roadway Profile) as shown. Deduct the following quantities to bid item plan quantities in the schedule of prices. Item No. Approx Quantity Units Description Unit Price Amount 19 (32.00) LF Sawcutting $ 3.00 $ (96.00) 20 (15.00) SY Removing Cement Conc. Pavement $ 16.00 $ (240.00) 34 (4.00) CY Cement Conc. Pavement $ 210.00 $ (840.00) 35 (19.00) EA Corrosion Resistant Dowel Bar $ 14.00 $ (266.00) 36 (6.00) EA Tie Bar with Drill Hole $ 18.00 $ (108.00) 43 (1.00) EA Catch Basin Type 2, 84 In. Diam. $ 16,000.00 $ (16,000.00) Add the following quantities to existing bid item plan quantities in the schedule of prices Item Approx Units Description Unit Price Amount No. Quantity 37 96 LF Ductile Iron Storm Sewer Pipe 8 In. Diam. $ 56.00 $ 5,376.00 Total this Change Order: $ (12,174.00) Working Days: None (no additional days) All work, materials and measurement to be in accordance with the provisions of the Standard Specifications and Special Provisions for the type of construction involved. ORIGINAL CONTRACT AMOUNT CURRENT CONTRACT AMOUNT ESTIMATE NET CHANGE THIS ORDER ESTIMATED CONTRACT TOTAL AFTER CHANGE $1,968,690.65 $1,968,690.65 ($12,174.00) $1,956,516.65 W w N O O Q Q Q H N ICJ Z _ U H Q i PLAN 0 5 10 20 40 60 GENERAL CONSTRUCTION NOTES 1. INSTALL CEMENT CONCRETE CURB, GUTTER, AND SIDEWALK AND RESTORE ROADWAY PER TYPICAL ROADWAY SECTIONS, SHEETS 4 - 5. 2. FOR ROADWAY PROFILE SEE SHEETS 18 - 20. 3. FOR SITE PREPARATION k TESC PLAN AND DETAILS, SEE SHEETS 9 - 13. 4. FOR REMOVAL LIMITS, SEE SITE PREPARATION & TESC PLAN, SHEETS 9 - 13. 5. FOR CHANNELIZATION k SIGNING PLAN, SEE SHEETS 33 - 36. 6. FOR ILLUMINATION PLAN AND DETAILS, SEE SHEETS 21 - 26. 7. FOR SIGNAL PLAN AND DETAILS, SEE SHEETS 27 - 30. 8. FOR IRRIGATION PLAN AND DETAILS, SEE SHEETS 37 - 42. 9. FOR LANDSCAPE PLAN AND DETAILS, SEE SHEETS 43 - 47. 10. POWER POLES AND VAULTS TO BE RELOCATED BY OTHERS. 11. GAS VALVE BOXES TO BE RELOCATED AND /OR ADJUSTED TO GRADE BY OTHERS. CONSTRUCTION NOTES Q3 CONSTRUCT CEMENT CONCRETE DRIVEWAY ENTRANCE TYPE 3. FOR DRIVEWAY PLAN AND PROFILE SEE ROADWAY DETAILS, SHEET 7. FOR DETAILS SEE CITY OF RENTON STD PLAN F004.1, F004.4, F009. ® CONSTRUCT CEMENT CONCRETE SIDEWALK. SEE TYPICAL ROADWAY SECTIONS, SHEET 4 k 5. 5Q INSTALL MONOLITHIC CURB WITH CURB JOINTS ON TOP OF NEW CEMENT CONCRETE PAVEMENT PER ROADWAY DETAILS, SHEET 7. SEE SPECIAL PROVISIONS. Q7 REPLACE METAL HANDRAIL WITH LIKE KIND, AS APROVED BY THE ENGINEER. • STA 44 +00.00, 36.75' RT TO STA 44 +53.68, 30.60' RT, 54.2 LF. • STA 44 +00.00, 42.80' RT TO STA 44 +55.18, 36.40' RT, 55.7 LF. • STA 44 +98.73, 30.60' RT TO STA 45 +33.76, 30.60' RT, 35.0 LF. • STA 44 +98.73, 36.40' RT TO STA 45 +33.76, 36.40' RT, 35.0 LF. Q9 PROTECT TIMBER POWER POLE. 0 ADJUST CATCH BASIN OR STORM DRAIN MANHOLE PER CITY OF RENTON STD PLAN 400.4 AND REPLACE FRAME AND COVER PER CITY OF RENTON STD PLANS 204.00, 204.10, 204.20 AND 204.50. 15 INSTALL PRECAST CONCRETE DUAL FACED SLOPED MOUNTABLE CURB, PER WSDOT STD PLAN F- 10.64 -02. to L0 L0 w N O O 0 Q H N IL J Z J 2 U H Q i DRAINAGE NOTES OX SEE PROFILE SHEETS 18 -20 FOR DRAINAGE NOTES NOT IDENTIFIED BELOW. ©0 CONSTRUCT CEMENT CONCRETE PAVEMENT WIDENING PER TYPICAL ROADWAY SECTIONS, SHEET 4 AND PROVIDE SAWED TRANSVERSE JOINTS PER WSDOT STD PLAN A- 40.10 -02. © PROVIDE LONGITUDINAL AND TRANSVERSE CONSTRUCTION JOINTS PER WSDOT STD PLAN A- 60.10 -01, EXCEPT PROVIDE THICKENED EDGE PER DETAIL, SHEET 7. © CONSTRUCT CONCRETE BUMPOUT AROUND EXISTING MANHOLE PER DETAIL, SHEET 7. 30 CONSTRUCT PCC PAVEMENT ISOLATION JOINTS AROUND STORM STRUCTURE CALL 3 WORKING DAYS PER WSDOT STD PLAN A- 40.15 -00. BEFORE YOU DIG: 811 1C 1 CHANGE ORDER 1 - DRAINAGE REVISION ODB NJD 05 2012 SURVEYED: KPG NC3PC s CITY OF RENTON SOUTH LAKE WASHINGTON DRAWING NO. I.J Ml 1 T, � Z��Y „c s,rLkC DRAWN BY: HJT �� DESIGN BY: HJT BID Public Works Department ROADWAY IMPROVEMENTS PROJECT NO, 11156 753 b Ave N 2502 JeMerson Ave FED AID NO. p ,� CHECK BY: NJD Seade.WA91111 T53)62.0720 2 DOCUMENTS ROADWAY PLAN 9 SSeb - \ ) (253)627.0720 APPROVED FOR CONSTRUCTION DATE: FEB 2012 PROJ MGR: NJD (w�k�mm0 STA 44 +00 TO STA 48 +00 VAL ��,` www.kpg.co DATE: SHEET NO. 1 OF 53 NUMBER REVISION DESCRIPTION BY APP. DATE 0�' FILE; 08046PLNOt.tlwg 60 _ 60 EXISTING CB CB # 1 - CB TYPE 2, 48 "0 n 40 STA 42 +21.31, 14.19' RT W/ RECTANGULAR VANED GRATE \-V 40 EXISTING GROUND AT I STA 42 +21.36, 23.17' RT f CONSTRUCTION 29,81 I 29.61 -- ------------------------ 1/ 20 U 20 11 CONNECT TO EXISTING 24 "0 PIPE P -TOC LT ELEV - P -CL ELEV - - - - - 0' P -TOC RT ELEV 30.63 30.49 30.27 29.87 29.47 29.14 28.96 10 40 +00 41 +00 42 +00 43 +00 44 +00 HOR: 1' =20' VER: 1 " =10' 60 60 EXISTING CB Q1 STA 47 1 52.41, 17 RT STA 44 +25.33, 15.58' RT CB f 2 - CONIC INLET EXISTING CB CB / 3 - CB TYPE 2, 48 "0 /� CB / 4 - CONC INLET 40 W/ RECTANGULAR VANED GRATE 2 STA 46 +43.26, 14.81' RT LW/ RECTANGULAR VANED GRATE o W/ RECTANGULAR VANED 4 STA 44 +25.34, 23.17' RT STA 46+43.27, 23.17' RT GRATE 45.00 CONNECT TO EXISTING GROUND ISTA 47 +5249, 23.17' RT EXISTING CB 28.54 AT CONSTRUCTION 28.61 28.38 28.07 27.76 -- - - -- - - - - - - - - - - - - - - - - - - - - - -- - - - - - - - - - - - - - - - - - - - -- - - - - - - - - - - - - - - - - - - - - - - - - - - - -- 28.71 ^. 20 N IE 25.59 _ _ N 20 Ito 3 +i +� - CONNECT TO i-LF 100 LF LF OR 8 "0 DI EXISTING 24 "0 PIPE EXISTING PIPES 8 "0 DI N S = 0.50% 0 0 I S = 0.50% DRAINAGE NOTES 1. CATCH BASIN k MANHOLE STATIONS AND OFFSETS ARE TO CENTER OF UD (ROUND MANHOLE COVER OR RECTANGULAR VANED GRATE). 2. RIM ELEVATIONS ARE FOR REFERENCE. RIM ELEVATIONS LISTED ARE FINISHED GRADE AT CENTER OF LID. MATCH FINISHED GRADES AND ROW LINE ELEVATIONS UNLESS OTHERWISE NOTED. 2. WHEN THE VERTICAL CLEARANCE BETWEEN UTILITIES IS LESS THAN 6" (MIN), PROVIDE AN OD X OD X 2.5" ETHAFOAM PAD BETWEEN UTILITIES, WHERE OD IS THE OUTSIDE DIAMETER OF THE LARGER PIPE. 3. SEE CITY OF RENTON STD PLANS FOR DRAINAGE DETAILS. 4. TOP OF CURB ELEVATIONS NOT ADJUSTED FOR CURB CUTS, ADA RAMPS, OR DRIVEWAYS. 5. LOCATION, DEPTH, AND SIZE OF EXISTING UTILITIES ARE APPROXIMATE. CONTRACTOR TO VERIFY BY POTHOLING BEFORE EXCAVATION. 6. CONTRACTOR SHALL PHASE CONSTRUCTION TO AVOID CONFLICTS WITH UTILITIES TO BE REMOVED OR ABANDONED UNTIL NEW SYSTEM IS INSTALLED AND OPERATIONAL. B. CATCH BASINS ALONG CURB ROW LINE SHALL HAVE VANED GRATES UNLESS OTHERWISE SPECIFIED. I - P -TOC LT ELEV - - - - - - - - P -CL ELEV - - - - - 028.96 P -TOC RT ELEV 29.21 29.24 29.07 28.97 28.86 28.47 3834 28.31 28.77 0 44 +00 45 +00 46 +00 47+00 48 +00 GARDEN AVE N PROFILE HOR: 1"=20' VER: '1=10 CALL 3 WORKING DAYS BEFORE YOU DIG: 811 1 CHANGE ORDER #I - DRAINAGE REVISION ODB NJD 05 /2012, SURVEYED: KPG DRAWN BY: ODB Kp� '} CITY OF RENTON SOUTH LAKE WASHINGTON DRAWING NO. y IH DESIGN BY: ODB `u PROJECT O. 11156 - 75)9NAveN 1112 Jet""' BID Public Works Department ROADWAY IMPROVEMENTS CHECK BY: PJG 5eat0e,WA98109 Ta."m,WA98402 DOCUMENTS FED AID NO. a138oF �� \,yry (2 4 61 2 8 61610 (2531627 -0720 APPROVED FOR CONSTRUCTION ROADWAY PROFILE DATE: FEB 2012 PROJ MGR: PJG waw.k wm STA 40 +00 TO STA 48 +00 SHEET NO. 10 - OF 53 NUMBER REVISION DESCRIPTION BY APP. DATE `J' Y FILE: 08046PRF01.dwg BY: DATE: