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HomeMy WebLinkAboutAgenda Report - January 16, 2019 C-03TM CITY OF LODI COUNCIL C O M MUNICATION AGENDA ITEM C-3 AGENDA TITLE: Approve Plans and Specifications and Authorize Advertisement for Bids for Lodi Station Parking Garage Elevator Structural Repair Project MEETING DATE: January 16, 2019 PREPARED BY: Public Works Director RECOMMENDED ACTION: Approve plans and specifications and authorize advertisement for bids for Lodi Station Parking Garage Elevator Structural Repair Project. BACKGROUND INFORMATION: The Lodi Station Parking Garage, located at 50 North Sacramento Street, has two elevators to convey patrons to all three floors of the parking structure. On May 15, 2018, a patron, driving a vehicle, hit the north elevator shaft, located on the third floor. The impact caused substantial damages to the elevator equipment and elevator shaft. Staff contracted Siegfried Engineering, Inc., of Stockton, to perform a structural assessment of the elevator structure after the incident. The assessment report (Exhibit A) determines the elevator structure to be safe but needs structural repair and new elevator equipment to make it operable. This project consists of performing structural repair to the damaged elevator shaft and exterior wall of the parking structure. The work will prepare the elevator shaft for a separate elevator contractor to perform the elevator equipment repair after the structural repair work is complete. The plans and specifications are on file in the Public Works Department. The planned bid opening date is February 21, 2019. The project estimate for the structural repair $100,000. Staff will enter into a separate agreement with an elevator contractor, at a later date, to perform the elevator equipment repair work. FISCAL IMPACT: The cost to make the necessary repairs to the structure, elevator replacement, and all engineering and Staff time spent on this incident will initially be funded by Transit Capital and recovered through insurance claims. FUNDING AVAILABLE: Funding will be identified at project award. C Charles E. Swimley, Jr. Public Works Director Prepared by Lyman Chang, Deputy Public Works Director/ City Engineer CES/LC/tdb Attachment cc: Siegfried Engineering, Inc. Deputy Public Works Director/City Engineer Transportation Manager Facility Supervisor, Sanford APPROVED: 1117_,F‘ mp ep en Sch K:\WP\PROJECTS\TRANSIT\Lodi Station Parking Structure\2018 Elevator Repair\CC PS&A.doc , City Manager 12/18/2018 Page 1 August 22, 2018 Lyman Chang City of Lodi Public Works Department 221 W. Pine Street Lodi, CA 95240 Dear Mr. Chang: Subject: Lodi Station Parking Garage North Elevator Damage Structural Investigation ■ ■ SIEGFRIED As requested, we conducted an investigation of the Lodi Station Parking Garage building located on the east side of Sacramento Street between East Elm and East Pine Streets. This investigation focused on the structural damage to the elevator on the north side of the facility as a result of vehicular damage that occurred on May 5th 2018. The purpose of this investigation was to provide structural engineering observations of the elevator and surrounding structural elements to identify structural damage or dangerous conditions, and to provide general recommendations for further investigations and/or repairs. This investigation did not include testing, destructive examinations or analysis of the structure. The following is a summary of our observations, findings and recommendations. General Information The vehicle damage occurred on the third (top) level of the parking structure at the north elevator. The vehicle accelerated through the third level elevator shaft door for the third level parking deck. The vehicle came to rest halfway into the elevator shaft and was removed later with a tow truck. The impact from the vehicle knocked the third level door into the elevator shaft, damaging the glass paneling on the north side of the elevator shaft. The vehicle also struck the masonry (CMU) wall adjacent to the elevator door and blew out blocks and reinforcing bars. The impact to the elevator door and door frame assembly also caused additional damage to the CMU at the floor deck anchoring points. This damage was evident at the third and second level elevator landings. We conducted our site investigation on July 31st & August 2"d, 2018. In addition, you had previously provided an electronic copy of the asbuilt construction documents. These plans refer to an "Issued for Bid" date of September 29, 2000 and an "asbuilt" date of April 28, 2003. Therefore, we assume the structure was built between 2001 and 2003. The structural design was performed in accordance with the 1997 Uniform Building Code as noted on sheet S0.1. Siegfried also recently investigated and designed repairs for the entire parking structure as part of an elective maintenance project. The construction documents for this maintenance project are titled "Repair/Maintenance Plan for: Lodi Station Parking Structure" dated August 22, 2017. Construction for this maintenance project was completed in May 2018. The primary garage structure consists of post tensioned concrete floor slabs and beams, cast in place concrete walls, columns, slab on grade and foundations, and masonry walls. The portion of the structure constructed over the occupied museum section facing Sacramento Street has a steel framed roof with steel metal decking. The north elevator shaft consists of reinforced masonry walls with portions of glass glazing on the north and west side. There is a 4 -foot -deep masonry pit at the bottom of the elevator shaft. There is an adjacent equipment room to the east that is also open to the roof above the third level of the parking structure. The roof structure consists of roofing over corrugated metal decking. The decking is supported on the face of the elevator shaft walls by steel angle ledgers. There is a metal canopy that covers the entrance to the elevator on the third level. Stockton 3244 Brookside Rd., Ste. 100 Stockton, CA 95219 t: 209.943.2021 f: 209.942.0214 San Jose 111 N. Market St., Ste. 300 San Jose, CA 95113 t: 408.754.2021 Sacramento 109 Scripps Drive Sacramento, CA 95825 t: 916.520.2777 Modesto 100 Sycamore Ave, Ste. 100 Modesto, CA, 95354 t: 209.762.3580 Page 2 Observations ■ ■ SIEGFRIED The following is an itemized list of damaged items we observed which are depicted on the attached Exhibit A; 1. Brick Veneer The vehicle swiped and damaged the brick veneer adjacent to the elevator shaft on the third level (Photo 1). This veneer covers the masonry wall as is only aesthetic in nature. 2. Masonry Walls The vehicle blew out a portion of the south shaft wall adjacent to the opening for the elevator door on the third level (Photo 2). The remaining portion of the masonry below the metal canopy that was not destroyed has significant cracking and exposed reinforcing (Photo 3). We did not observe any structural damage to the masonry wall above the lintel of the elevator door on the third level (Photo 4). The damage to the masonry extends down the wall below the third level landing down to the second level door opening. The spalling of the masonry does not extend below the lintel of the elevator door on the second level. We found no apparent damage to the masonry on the first level. The damage also appears to be limited to the south wall of the elevator shaft only. 3. Elevator Thresholds The elevator entrance threshold on the third level shows minor spalling (Photo 5). We also observed signs of lateral separation, up to 3/4" inch, of the elevator shaft from the third level slab at the ledger to deck connection from the second level looking up (Photo 6A). 4. Glazing/Aluminum Mullion Upon impact, the elevator doors on the third level blew off and struck the back (north side) of the elevator shaft. The cab of the elevator is assumed to have been on the first level at this time. The masonry portion of the wall was not significantly damage. However, there were multiple panes of glazing that were either shattered or severely cracked (Photo 7). Upon further inspection, the surrounding aluminum mullion does not appear to be significantly bent or damaged. 5. Elevator Frame Connections This report does not include an evaluation of elevator components, however we did observe additional damage to the masonry walls from the elevator frame anchors pulling out of the wall (Photo 8). The guide rail connection to the masonry walls appear to remain in good condition (Photo 9) throughout the elevator shaft. Findings and Repair Recommendations The following is a summary of our recommendations for repair of the damage identified. The item numbers correspond to the item numbers listed in the "Observation" section above. Item 1 The portions of damaged brick veneer can be replaced. This is an aesthetic issue and does not represent structural damage or hazards. Item 2 The damage to the masonry walls was caused by direct vehicle impact and the breakout of the anchors from the elevator door frames. This damage appears to be limited to portions of the south wall at the second and third levels. The masonry will require saw cutting and replacement. The new masonry reinforcing will need to be doweled into the adjacent portion of sound walls. Stockton 3244 Brookside Rd., Ste. 100 Stockton, CA 95219 t: 209.943.2021 f: 209.942.0214 San Jose 111 N. Market St., Ste. 300 San Jose, CA 95113 t: 408.754.2021 Sacramento 109 Scripps Drive Sacramento, CA 95825 t: 916.520.2777 Modesto 100 Sycamore Ave, Ste. 100 Modesto, CA, 95354 t: 209.762.3580 Page 3 ■ ■ SIEGFRIED Item 3 The elevator threshold on the third level will require structural repair to level with elevator door frame. The lateral separation between masonry shaft wall and parking deck noted in Picture 6A is significant. However, we compared this separation to the separation we noted in out 2016 investigation (Picture 6B). There appears to be no significant difference in the amount of movement of the elevator shaft. Therefore, the overall elevator shaft has not moved. Item 4 The damaged panes of glass appear to be a direct result of the impact form the separated third level elevator doors. We recommend replacing these individual panes of glass and verification by the window contractor that the surrounding aluminum mullion is not damaged and can be reused. Item 5 The bolts anchoring the elevator door frames to the masonry walls cannot be reused in areas where the walls are damaged. After the masonry walls are repaired, new anchors will need to be installed per the elevator equipment manufacturer specifications. Anchors in locations where the frame has not been damage are likely able to be reused; pending analysis of the existing elevator equipment by a qualified professional. Overall, we did not find any condition in immediate danger of structural failure or creating a current unsafe condition for the overall structure. The elevator shaft can be reused with moderate repairs; mainly to the masonry walls and elevator thresholds. This report does include the evaluation of the condition of the elevator equipment or the feasibility of replacing required elevator components. We recommend consulting with an elevator equipment manufacturer to determine the most appropriate course of action in repairing or replacing elevator equipment. We trust this information will be helpful in evaluating the use, maintenance and repairs for this building. If you should have any questions or need additional information, please do not hesitate to give us a call. Sincerely, SIEGFRIED Antho ty J. Lopes, P. ., S.E. 1' Rhett S. Kilgore, P.E. eRpFESSj0,, 44, LZ F x NO. S-4550 EXP. 12/31/19 Srhi1CT o�P� OF CAL\ DATE SIGNED: 8/22/2018 ,,,c)FEss/0N s Kid q� cp -72 cs No. C 85684 *� Exp: 9/30/18 sT P1 n1 DATE SIGNED: 8/22/2018 Stockton 3244 Brookside Rd., Ste. 100 Stockton, CA 95219 t: 209.943.2021 f: 209.942.0214 San Jose 111 N. Market St., Ste. 300 San Jose, CA 95113 t: 408.754.2021 Sacramento 109 Scripps Drive Sacramento, CA 95825 t: 916.520.2777 Modesto 100 Sycamore Ave, Ste. 100 Modesto, CA, 95354 t: 209.762.3580 ITEM 4 ITEM 5 ITEM 5 +39'-5" 1 T.O. PARAPET ITEM 3 +25'-0" 1 T.O. SLAB +14'-0" t T.O. SLAB SECTION +0'-0" , T.O. SLAB SHADING DENOTES MASONRY TO BE REPLACED 3rd LEVEL +25'-0" T.O. SLAB ITEM 2 ITEM 1 2nd LEVEL +14'-0" T.O. SLAB ELEVATOR ELEVATION 0- 0 0 0 0 0 0 I 3rd LEVEL 1B� 1— LOCATION PLAN ITEM 4 V v 9,°°� / 2 SPC' P -c / /` x ITEM 1 ELEVATOR PLAN VEIW ITEM 2 ■• EH'uSEEw a Ear xeEa x� • SIEGFRIED • ARCHE�.Ui. 3244 Brookside Road, Suite 100 Stockton, California 95219 209-943-2021 www.siegfriedeng.com Fx: 209-942-0214 Elevator Shaft Repair JOB NO. 16053B DATE Aug. 22 2018 SCALE As Shown Lodi Station Parking Structure 50 N. Sacramento Street Lodi, CA DRAWN BY RJS DESIGNER RSK SHEET EXA Page 4 Exhibit B Photo 1 — Third Level Brick Veneer Damage Photo 2 — Third Level Masonry Wall Damage ■ ■ SIEGFRIED Stockton 3244 Brookside Rd., Ste. 100 Stockton, CA 95219 t: 209.943.2021 f: 209.942.0214 San Jose 111 N. Market St., Ste. 300 San Jose, CA 95113 t: 408.754.2021 Sacramento 109 Scripps Drive Sacramento, CA 95825 t: 916.520.2777 Modesto 100 Sycamore Ave, Ste. 100 Modesto, CA, 95354 t: 209.762.3580 Page 5 ■ ■ SIEGFRIED Photo 3 — Masonry Wall Cracking/Exposed Reinforcing Photo 4 — Third Level Masonry Wall Damage Extents From Shaft Interior Stockton 3244 Brookside Rd., Ste. 100 Stockton, CA 95219 t: 209.943.2021 f: 209.942.0214 San Jose 111 N. Market St., Ste. 300 San Jose, CA 95113 t: 408.754.2021 Sacramento 109 Scripps Drive Sacramento, CA 95825 t: 916.520.2777 Modesto 100 Sycamore Ave, Ste. 100 Modesto, CA, 95354 t: 209.762.3580 Page 6 Photo 5 — Third Level Threshold Damage ■ 1 SIEGFRIED Photo 6A — Third Level Deck Lateral Separation Form Elevator Shaft, Looking From Second Level Up At Steel Ledger Angle Stockton 3244 Brookside Rd., Ste. 100 Stockton, CA 95219 t: 209.943.2021 f: 209.942.0214 San Jose 111 N. Market St., Ste. 300 San Jose, CA 95113 t: 408.754.2021 Sacramento 109 Scripps Drive Sacramento, CA 95825 t: 916.520.2777 Modesto 100 Sycamore Ave, Ste. 100 Modesto, CA, 95354 t: 209.762.3580 Page 7 ■ ■ SIEGFRIED Photo 6B — Third Level Deck Lateral Separation Form Elevator Shaft, Looking From Second Level Up At Steel Ledger Angle From 2016 Siegfried Investigation Photo 7 — Shaft Glazing Damage From Door impact Stockton 3244 Brookside Rd., Ste. 100 Stockton, CA 95219 t: 209.943.2021 f: 209.942.0214 San Jose 111 N. Market St., Ste. 300 San Jose, CA 95113 t: 408.754.2021 Sacramento 109 Scripps Drive Sacramento, CA 95825 t: 916.520.2777 Modesto 100 Sycamore Ave, Ste. 100 Modesto, CA, 95354 t: 209.762.3580 Page 8 Photo 8 — Door Frame Separation At Third Level Photo 9 — Typical Guiderail Anchorage •• SIEGFRIED Stockton 3244 Brookside Rd., Ste. 100 Stockton, CA 95219 t: 209.943.2021 f: 209.942.0214 San Jose 111 N. Market St., Ste. 300 San Jose, CA 95113 t: 408.754.2021 Sacramento 109 Scripps Drive Sacramento, CA 95825 t: 916.520.2777 Modesto 100 Sycamore Ave, Ste. 100 Modesto, CA, 95354 t: 209.762.3580