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Home My WebLink AboutAGENDA REPORT 1992 0909 CC ADJ ITEM 11Fr %d e, ic(a� i ITEM MOORPARK C"Y or�PARK, lCALeIFFOrRNIA 799 Moorpark Avenue Moorpark, California 93021 M E M O R A N D U M lC NidbT L�T1�ZfAI TO: The Honorable City Council FROM: Kenneth C. Gilbert, Director of Public Work DATE: September 1, 1992 (Council Meeting 9 -2 -92) SUBJECT: Consider Preliminary Design for the Construction of Block Walls Along the Rear of Properties Located on Sherman Avenue [North Side of Los Angeles Ave Feet of Spring Rd] OVERVIEW This presents for approval the preliminary design for the subject project. BACKGROUND Earlier this year the City Council directed staff to proceed with the preparation of a preliminary design for the subject project. To prepare the design, it was necessary to perform a detailed survey of the rear yards of the properties affected. Prior to entering the properties for this purpose it was necessary to obtain right -of -entry permits from the owners of the properties. All of these steps were taken and the preliminary design has been completed. DISCUSSION A. Design This project calls for the removal of existing walls and the construction of a new block wall on the north side of Los Angeles Avenue from Millard Street to Spring Road as described in Exhibit 1. The new wall will be constructed on private property except for the wall footing as discussed herein. The block wall will be a minimum of eight feet ( 8' ) high as measured from the sidewalk. The height of the wall on the property side will vary from eight to ten feet. Pages 2 & 3 of Exhibit 1 depict a typical cross section and elevation for the wall. The appearance of the wall will be determined by the materials selected. PAUL W. LAWRASON JR. JOHN E. WOZNIAK SCOTT MONTGOMERY BERNARDO M. PEREZ ROY E. TALLEY JR. Mayor Mayor Pro Tem Councilmember Councilmember Councilmember Sherman Wall Page 2 B. Design Options and Alternative Materials 1. Option 11: Attached as Exhibit 2 is a copy of a cross section of the subject wall with the wall footing to encroach into Caltrans right -of -way. 2. Option 12: Attached as Exhibit 3 is a copy of a cross section of the subject wall with the wall footing entirely on the residential lots. It is anticipated that this option will be more costly due to the removal and replacement of private improvements which are in conflict with the proposed construction. 3. Alternative Materials: Each of the above options could be constructed using alternative materials. These alternates include: a) precision block with a stucco finish, b) precision block; and c) pre- fabricated panels. Brochures illustrating the appearance of the pre- fabricated panels have been distributed to the City Council under separate cover. 4. Cost Estimate: The estimated cost for the above Options and Alternates are summarized as follows: Alternatives Precision Block w /Stucco Precision Block Pre -fab panels Option #1 Option #2 $133,000 $109,000 $99,000 C. Public Works /Facilities Committee Review $160,000 $136,000 $126,000 On August 31, the Public Works /Facilities Committee discussed the subject design. Subsequent to considering the many "pros" and "cons" of the various options and alternates, the Committee recommended a course of action summarized as follows: a) design should be based on Design Option #1 as the preferred construction method with the use of Option #2 in those areas where the proposed footing would conflict with existing improvements or underground utilities south of the wall; b) pre- fabricated panels, with a Grapestake design (see brochure), should be the preferred material; c) bid documents should also include a Bid Alternate for the construction of the wall with precision block. Sherman Wall Page 3 D. Protect Implementation If approved by the City Council, the steps required to implement the project include the following: • Solicit Pre -fab wall design information from manufacturers; • Finalize wall design Options and Alternates; • Submit application for Caltrans Encroachment Permit; • Obtain Caltrans approval; • Prepare final design plans and specifications; and, • submit final design to the City Council for approval and authorization to advertise for receipt of bids. It is anticipated that the above process would take approximately ninety days. E. Community Input The Public Works /Facilities Committee asked that the property owners affected by the project be advised that this matter is to be considered by the City Council at its September 9th meeting. A notice was mailed to the property owners and residents of those properties advising them of this item. F. Landscape Design The design for parkway landscaping improvements has been completed and is ready to submit to Caltrans for an encroachment permit. These improvements could be done as a part of the subject project or separately after the subject project has been completed. RECOMMENDATION Staff and the Public Works /Facilities Committee recommend that the City Council take the following actions: 1. approve the subject preliminary design as described in Section "C" above; 2. direct staff to proceed with finalizing the design and obtaining Caltrans approval: and, 3. direct staff to bring the final design and project cost estimate back before the City Council for final approval and authorization to advertise for receipt of bids. vp \rpt\shert/ SI 4 I ) Y C-1 W ............. ............ * ....... .. ............... zt, vi, 91' va or. zs vs 36 til 09 zng v9 99 99 OIL ZZ, own s. Y C-1 W zt, vi, 91' va or. zs vs 36 til 09 zng v9 99 99 OIL ZZ, Y C-1 W WALL AND PILASTER FINISH TO BE DETERMINED BY CITY OF MOORPARK L I I I I I I �IIII1�fIII111111111 11 -I "1' f I I I i f I I I f rl N r �i ro S) Z 1.18iNX3 :� r n D Di m Z Ti O C) m 0 r O C) X\ OMIT MORTAR IN FIRST VERTICAL JOINT ABOVE GROUND SURFACE O 32" 0/C FOR WEEP HOLES 6' PUBLIC UTILITY EASEMENT #4 CONT. J 3 w m w U V) 8" CONC. BLOCK FILLED W /GROUT #4 ONT. p.VG. #5016" O/C— CENTERED IN WALL R/W 6" CONC. BLOCK #404T O/C CENTERED IN WALL 10' 4.5' S.5' SIDEWALK OS N tj � P a � (2) #4 CONC. 6" ALTERNATE WALL D.ETAIL.- N t OMIT MORTAR IN FIRST VERTICAL JOINT ABOVE GROUND SURFACE ® 37' 0/C FOR WEEP HOLES R/W PUBLIC UTILITY EASEMENT #4 CONT. ---�� I J � w w cr- 6" CONC. BLOCK 10' 4.51 5.5'a. 8" CONC. SIDEWALK � GELES FILLED #4 CONT. JII N 5 ®16" 0/C CENTERED IN WALL aR -6" (2) #4 CONC. at -%or A2 o- 2 #4®41' 0/C CENTERED IN WALL BLOCK OMIT MORTAR IN FIRST VERTICAL JOINT ABOVE GROUND SURFACE ® 37' 0/C FOR WEEP HOLES R/W PUBLIC UTILITY EASEMENT #4 CONT. ---�� I J � w w cr- 6" CONC. BLOCK 10' 4.51 5.5'a. 8" CONC. SIDEWALK � GELES FILLED #4 CONT. JII N 5 ®16" 0/C CENTERED IN WALL aR -6" (2) #4 CONC. at -%or A2 o- 2 #4®41' 0/C CENTERED IN WALL WALL DETAIL W BLOCK W/ 1 % AVG. Ili— MIN WALL DETAIL W