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Home My WebLink About10 - Policy L-25 - Decorative Alley Pavement ProgramCITY OF NEWPORT BEACH CITY COUNCIL STAFF REPORT Agenda Item No. 10 August 24, 2004 TO: HONORABLE MAYOR AND MEMBERS OF THE CITY COUNCIL FROM: Public Works Department Stephen G. Badum 949 - 644 -3311 sbadum@city.newport-beach.ca.us SUBJECT: PROPOSED CITY COUNCIL POLICY, L -25: DECORATIVE ALLEY PAVEMENT PROGRAM RECOMMENDATION: If desired, 1) Adopt City Council Policy L -25; Decorative Alley Pavement Program 2) Adopt City STD - 144 -L, Interlocking Concrete Paver Alley Pavement DISCUSSION: Underground utilities were recently constructed within the alley between Ocean Boulevard and Ocean Front from "G" Street to Channel Road in Peninsula Point (Assessment District # 86). In conjunction with this work, the City intends to repave the concrete alley this fall now that all of the residents have successfully converted their connections to the underground system. Several residents within this district have petitioned the City to allow them to fund the installation of decorative concrete pavers in their alley. Current City encroachment policy allows this type of installation providing each adjacent property owner enter into a non - standard encroachment agreement which requires the property owner to indemnify the City and maintain the non - standard improvement adjacent to their property. However, the current policy requires 100% participation and poses coordination problems for maintenance and repairs in the future. The proposed policy will allow residents to pay for the cost of upgrading alley pavement to a newly approved City standard plan (see attached STD - 144 -L) consisting of pavers over concrete subgrade. The policy would require 60% of the adjacent property owners to sign a petition supporting the installation and cost of the upgraded alley pavement. Future maintenance would become the responsibility of the City, however, the ability to match the existing pavers would not be guaranteed as the availability and color matching may prove to be difficult over time. To minimize this problem the City's SUBJECT: PROPOSED CITY COUNCIL POLICY, L -25: DECORATIVE ALLEY PAVEMENT PROGRAM Date: August 24, 2004 Page 2 standard will require traditional colors such as concrete gray and brick red or a "blended" color scheme which includes multiple shades of concrete pavers. At some point in the future, when the pavers deteriorate to an unacceptable condition and /or replacement pavers are not available, the City would provide an opportunity for the proponents (current owners) to replace the decorative pavers or replace the alley with alternative standard improvements. Fundin-g Availabilitv The cost of the upgraded alley pavement would be the responsibility of the proponents. However, this design will cause a slight increase in underground utility maintenance costs. Any needed excavations within the alley will require the additional steps of removing and replacing the pavers when performing maintenance or replacement of water, sewer, gas, electric, cable and telecommunication facilities including individual service connections by adjacent property owners. However, the pavers will be more effective in hiding trench cuts and may save the City and other utility companies frorn the additional costs of full concrete panel replacements. Submitted by: (----.1-Stephen G. Badum Puplic Works Director Attachments: Draft City Council Policy L -24; Decorative Alley Pavement Program City Standard Plan STD -144 -L L -25 Decorative Concrete Pavers in Alleys The City supports the beautification of public alleys by adjacent property owners. It is the intent of this policy to allow property owners to contribute funds to enhance the surface of alleys with decorative concrete pavers. General A. Installation is permitted in residential and commercial alleys upon approval of the Public Works Department. No person shall install decorative concrete pavers without first obtaining an encroachment permit from the Public Works Department. B. Pavers must conform to City STD — 144 -L and the color scheme must be approved by the Public Works Department. Traditional colors (ex: concrete gray, brick red) or blended color schemes are required. C. The proponents of the decorative concrete pavers are responsible for the installation costs or incremental upgrade costs if the City has previously scheduled the alley for replacement. D. Upon installation, the City will be responsible for maintenance of the concrete pavers during the design life of the product (estimated at 20 years). During the maintenance period, every effort shall be made to match shape and color of replacement pavers. At such time the Public Works Director determines that the concrete pavers have deteriorated to an unacceptable condition and/or suitable replacements are unavailable, the proponents shall be given an opportunity to replace said pavers or the Public Works Department shall have the option of replacing the alley pavement with alternative standard materials. Procedure A. Proponents must circulate a petition to adjacent owners of any block (s) where decorative concrete pavers are desired. The petition shall include product specifications, color palette, paver layout pattern, estimated project costs, and expected contribution amounts. The petition must be previously approved by the Public Works Department before circulation. B. More than 60% of the adjacent property owners must support the installation. However, the distribution of costs among the proponents may vary. C. Upon certification of the petition, City staff will prepare construction plans or additive options to existing alley resurfacing projects and determine estimated costs. D. The City will obtain bids for the proposed project. The proponents must deposit the required funds with the City within 15 days of receiving notice of confirmed bid costs. a d � d #4 BAR P.C.C. BASE CONCRETE EDGE RESTRAINT IF REQUIRED w- JOINT SAND �.. ,.BEbDING SAND` d . . , d ALTERNATIVE EDGE RESTRAINT EDGE PAVER ATTACHED TO "SUB" CURB WITH THINSET TO ACHIEVE: BOND TABLE 1 rlmf it SIEVE SIZE I PERCENT PASSING, BY WEIGHT 9.5 MM (3 8 —IN TABLE 2 100 4.75 mm No. 4 95 TO 100 2.36 mm No. 8 80 TO 100 1.18 mm o. 1 4 50 TO 85 0.60 mm No. 3) 8 25 TO 60 0.30 mm No. 500) 1 ) 5 TO 30 0.15 mm No. 10) 30) 0TO10 0.075 mm (No. 200) 50 LESS THAN 3 CITY OF NEWPORT BEACH PUBLIC WORKS DEPARTMENT ALLEYINTERLOCKING CONCRETE PAVEMENT SECTION in M DIRECTOR OF PUBLIC WORKS R.C.E. NO. 36106 6 AUG 2004 SCALE N.T.S _ M. GRA CIA I S TD- 144 -L -A TABLE 2 GRADATION FOR JOINTING SAND (ASTM C 144) PERCENT PASSING, BY WEIGHT SIEVE SIZE NATURAL SAND MANUFACTURED SAND 4.75 mm No. 4 100 100 2.36 mm No. 8 95 TO 100 95 TO 100 1.18 mm ( o. 1 ) 70 TO 100 70 TO 100 0.60 mm (No. 30) 40 TO 75 40 TO 75 0.30 mm No. 50 10 TO 35 20 TO 40 0.15 mm o. 10) 2TO15 10 TO 25 0.075 mm (No. 200) 0 TO 5 0 TO 10 CITY OF NEWPORT BEACH PUBLIC WORKS DEPARTMENT ALLEYINTERLOCKING CONCRETE PAVEMENT SECTION in M DIRECTOR OF PUBLIC WORKS R.C.E. NO. 36106 6 AUG 2004 SCALE N.T.S _ M. GRA CIA I S TD- 144 -L -A NOTES 1. SUB GRADE SHALL BE COMPACTED NATIVE MATERIALS TO AT LEAST 95% PER ASTM D 1557. THE EFFECTIVE DEPTH OF COMPACTION SHALL BEAT LEAST THE TOP 12 INCHES. 2. THE CONCRETE BASE SHALL BE CLASS 560 -C -3250 P.C.C. 3. PAVERS SHALL ABUT A STRAIGHT EDGE OF EXISTING P.C.C. OR A.C.; OTHERWISE P.C.C. EDGE RESTRAINTS ARE REQUIRED ALONG THE PERIMETER OF THE PAVERS. P.C.C. SHALL BE CLASS 560 -C -3250 AND REINFORCED WITH A CONTINUOUS # 4 BAR AS SHOWN IN THE STANDARD DRAWING. THE INSIDE FACE OF THE EDGE RESTRAINT SHALL BE VERTICAL. EDGE RESTRAINTS SHALL HAVE 114 -INCH RADII AT THE TOP CORNERS. 4. THE GRADATION FOR BEDDING SAND SHALL CONFORM TO ASTM C 33 (SEE TABLE 1). 5. PAVERS SHALL BE CONSTRUCTED WITH CONCRETE AND SHALL CONFORM TO ASTM C 1272 SPECIFICATION FOR HEAVY VEHICULAR PAVING BRICK. 6. THE MINIMUM PAVER THICKNESS, EXCL USIVE OF ANY CHAMFERS, SHALL BE 3.15 INCHES (80 MM). THE RATIO OF MAXIMUM PAVER LENGTH TO THICKNESS SHALL BE LESS THAN 3 TO 1. THE MAXIMUM ALLOWABLE CHAMFER SHALL BE 3/16 INCH. 7. PAVER COLOR AND LAYOUT PATTERN SHALL BE APPROVED BY THE PUBLIC WORKS DEPARTMENT. 8. PAVER PIECE CUT SMALLER THAN 2 -INCH X 2 -INCH WILL NOT BE ACCEPTED. 9. JOINT SAND SHALL CONFORM TO ASTM C 144 AGGREGATES FOR MASONRY MORTAR FOR CLEANLINESS AND AGGREGATE SIZE (SEE TABLE 2). 10. TOP OF PAVERS SHALL CONFORM TO FINAL DESIGN ELEVATIONS TO THE TOLERANCE SPECIFIED BY THE ENGINEER. 11. IF THE LONGITUDINAL FLOWLINE GRADE IS THE ALLEY IS LESS THAN 0.5 PERCENT, THEN A 2 -FOOT WIDE (MINIMUM) GUTTER, 8 INCHES THICK, SHALL BE CONSTRUCTED. CITY OF NEWPORT BEACH APPROVED. PUBLIC WORKS DEPARTMENT A L L E Y IN TERL OCKING CONCRETE DIRECTOR OF PUBLIC WORKS R.C.E. N0. 36106 PAVEMENT SECTION m ATE 16 AUG 2004 SCALE N.T.S. DRAWN M. GRACIA I STD - 144 -L -B