LA Metropolitan Transportation Auth. One Gateway Plaza Mail Stop Los Angeles, CA 90012

Size: px

Start display at page:

Download "LA Metropolitan Transportation Auth. One Gateway Plaza Mail Stop Los Angeles, CA 90012"

Kellie Ball
6 years ago
Views:

L Metropolitan Transportation uth. One Gateway Plaza Mail Stop 99-16-10 Los ngeles, C 90012 Phone: 213-922-7523 Fax: 213-922-7392 TRNSMITTL No.

Figueroa Street loth Floor Los ngeles, C 900 1 7 Charles Hymes REF: pproved Deviation Request RC-2012-011 WE RE SENDING: D Shop Drawings D Letter D Prints D Change Order D Plans D Sa moles D

1 L Metropolitan Transportation uth. One Gateway Plaza Mail Stop Los ngeles, C Phone: Fax: TRNSMITTL No PROJECT: Regional Connector Preliminary Engin DTE: 1118/2012 TO: TTN: Connector Partnership 777 S. Figueroa Street loth Floor Los ngeles, C Charles Hymes REF: pproved Deviation Request RC WE RE SENDING: D Shop Drawings D Letter D Prints D Change Order D Plans D Sa moles D Specifications l!'f Other: pproved Deviation Request RC D pproval D Your Use D s Requested D Review and Comment SENT VI: l!'f ttached D Separate Cover Via: D pproved as Submitted D pproved as Noted D Returned fter Loan D Resubmit D Submit D Returned D Returned for Corrections D Due Date: Remarks: ttached is pproved Deviation Request RC Safety walks at platform level (1st/Central), for your files. CC: Primavera Page 1 of 1 s;gn<d' L ~ Girish Roy 01 -Metro Response to RFI/C- Single Page (f_tr_sub_draw_01) PRINT DTE: 11/8/ :31 :47

3 DEVITION REQUEST SELINE DOCUMENTS Date of Request: pril 6, 2012 Request No. : RC-11 Discipline: rchitecture Subject: Safety walks at west end of 1 st /Central Station aseline Documents to be deviated from: Metro Rail Design Criteria, Fire/Life Safety Criteria, Section 3/Guideway Facilities Egress Paths Reason for Request: 1.C. Safety walks shall be brought down to rail elevation at track level at each end of a station platform to provide access to the underside of vehicles for lengths not less than 15 feet but not greater than 150 feet. Due to the LP alignment and real estate constraints, the safety walks cannot be brought down to rail elevation at track level at the west end of the 1st/Central venue station. ecause of the proximity of the existing Japanese Village Plaza Parking Structure at 1 st St. and Central ve., sufficient space is not available to provide access to the underside of the vehicles at the west end of the station. Therefore, the safety walk from the tunnel will match the station platform elevation at the west end of the station. The vehicle access space is provided at the east end of the station. Impact to Project: The vehicle access space at the west end of the station cannot be provided without major structural modifications or removal of the Japanese Village Plaza Parking Structure. RC Dev Req 11 Safety Walks at 1st&Central Rev0.docx

4 METRO RIL DESIGN CRITERI FIRE/LIFE SFETY CRITERI Flammable or hazardous liquid or gas lines crossing the transit right-of-way, except when located in public roadways, shall be in accordance with local codes. 3.3 GUIDEWY TRCTION POWER ND FCILITY WIRING Traction power elements associated with the guideway may include contact rail, contact rail supports, wayside potheads, cable between pothead and contact rail, overhead contact conductor and its appurtenances, and special warning and identification devices. Facility wiring shall conform to the requirements specified in Section Contact Rail Protection Contact rail conductors and side approaches shall be secured to suitable insulating supports, properly bonded at joints, and properly protected to prevent contact with personnel. Coverboards shall be capable of withstanding a load of 250 lb. (113.4 kg) when applied at any point with no permanent visible deflection The protective coverboard provided on contact rail sections shall be securely anchored. Coverboard materials shall be electrically insulating, capable of passing STM E84 with a flame spread rating of not more than 25, and a smoke density of 50 or less The coverboard shall be permanently and conspicuously marked to provide basic location identification by section of guideway and electrification feeder zone. Markings should be at the ends of station platforms, at each end of each contact rail gap, and at intervals along the coverboard, not to exceed 500 feet. Marking locations should be coordinated with graphics specified for emergency access points Contact Rail ppurtenances - Cables connecting the contact rail, pot heads, and energized hardware shall be covered with insulating material and installed so as not to present a tripping or electrical hazard to personnel on the walkway. Insulating material for cable connecting power to the rail shall meet the requirements of IEEE Standard 383, Section Contact Rail Location - The contact rail shall be located opposite the station platform and the safety walkway except at special trackwork areas. (See Paragraph C) Overhead traction power conductor systems shall comply with CPUC G.O. #95 and shall meet the following requirements: Nonconducting material shall be used to isolate the overhead catenary from any grounded structure Deleted Traction Power Isolation from the Utility - Isolation means shall be provided outside the traction power substation to enable the removal of the high voltage from the transit equipment Signage - Warning signs shall be posted on entrances to the guideway (e.g., station platforms, portals), on fences or barriers adjacent to the entrance, and at other locations where unauthorized, non-operating authority employees may attempt to enter the guideway. The warning sign shall clearly state the hazard (e.g., "Danger High Voltage 750 Volts") in letters, size, and colors as required by NFP 70 (NEC), CLOSH regulations, and D requirements Emergency power shut-off devices (ETS) shall be provided in accordance with Subsection 7.5 for both heavy rail and light rail systems. 3.4 EMERGENCY EGRESS ND CCESS FOR UNDERGROUND GUIDEWYS - (See Subsections 3.9 and 3.10 for surface and elevated requirements.) n emergency means of egress from transit vehicles in tunnels and through tunnels to a point of safety shall be provided. 28 DE Metro aseline Rebaseline: 10/29/2010 Metro Rail Design Criteria Fire Life Safety Criteria FINL.pdf

5 METRO RIL DESIGN CRITERI FIRE/LIFE SFETY CRITERI In order to be considered a point of safety the following conditions must be met:. Tunnels may be separated by either a minimum two hour rated fire barrier at each end of crosspassages protected by Class (1 1/2 hour) fire assemblies, or a common minimum three-hour rated fire barrier between adjacent tunnels with openings protected by Class (3-hour) fire assemblies.. Emergency ventilation facilities shall be provided at each unclosable opening (e.g. crossover) in the fire-rated barrier, as necessary for center platform stations or for special track sections, so that a vehicle fire can be prevented from passing beyond the opening for a minimum of one hour Each point of safety must be provided with the following:. lue Light Station shall be available at each point of access to enclosed points of safety.. Emergency lighting shall be provided. (See Paragraph 3.4.7) C. The minimum illumination level for egress paths anywhere along the guideway shall be 0.25 footcandles, measured at the walking surface Egress from within a point of safety shall not be back into the tunnel of fire origin Egress Paths - In addition to the requirements specified in Paragraph the following identifies features necessary for effective emergency egress of patrons from disabled transit vehicles safety walk shall be provided on one side of tunnels, and shall be placed at the height of the vehicle floor (plus 0 inches, minus 7 inches) to facilitate egress through vehicle side doors. The following additional requirements shall be met:. Level walkways, including ramps having a slope not exceeding 6% shall have a clear width not less than 3 feet,, a maximum cross slope toward the trackway of 0.5% and continuous wall handrails of 1¼ to 1½ inch standard galvanized pipe, mounted 34 to 38 inches above the walkway with 1½ inch minimum space between the handrail and the wall. No protrusions into the walkway shall extend further than a perpendicular line tangent to the handrail.. Stairs, and ramps having a slope in excess of 6 percent, and track-level walkways shall have a clear width of 3 feet four inches and shall be equipped with a 3 foot 6 inch high guardrail having an intermediate rail at mid-height. Cross slope shall be as required for level walkways. Stairs shall have a minimum of two risers, and shall be constructed in accordance with the CC, as amended. C. Safety walks shall be brought down to rail elevation at track level at each end of a station platform to provide access to the underside of vehicles for lengths not less than 15 feet but not greater than 150 feet. Safety walks shall also be brought down to rail elevation at crosswalks. Safety walks on the contact rail side of the trackway shall not be brought below the level of the contact rail coverboard. Where walkways are at track level, contact rail guards shall be provided to prevent inadvertent contact with the contact rail. D. minimum three-foot wide car-floor level walkway shall be provided for each track. The walkway clearance envelope above the walking surface shall measure 30 inches wide by 80 inches high and shall be clear of all obstructions including the tunnel handrail and the vehicle dynamic envelope. Wall handrails of 1¼ to 1½ inch standard galvanized pipe may be mounted 34 to 38 inches above the walkway. Handrails shall not protrude into the walkway further than 3 inches, and shall not intrude into the walkway clearance envelope Crosswalks shall be provided at track level to assure walkway continuity where safety walks are discontinued on one side of the tunnel and continued on the opposite side and where access is required from safety walks and track walkways to emergency stairs or crosspassages. The crosswalks shall have a uniform level walking surface at top of rail, with a minimum width of 6 feet for a contact rail system and 3 29 DE Metro aseline Rebaseline: 10/29/2010 Metro Rail Design Criteria Fire Life Safety Criteria FINL.pdf

1 2 3 4 5 6 7 8 9 10 11 12 13 20-7" 30-0" 30-0" 30-0" 30-0" 30-0" 30-0" 30-0" 30-0" 30-0" 47-11" 53-4" EGIN PLTFORM END PLTFORM R5--201 E THE PREPRTION OF THIS THE STTE OF CLIFORNI.

5 SFETY WLKWY REV DTE Y PP REG NO EXPIRES 25-1 " 4-6 " 4-6 ".L.S R5--202 R5--202 R5--201 E. TEL F. D F.H.C-1 ENCH TYP STIR NO.

7 " 30-0" 30-0" 30-0" 30-0" 30-0" 30-0" 30-0" 30-0" 30-0" 47-11" 53-4" EGIN PLTFORM END PLTFORM R E THE PREPRTION OF THIS THE STTE OF CLIFORNI. C L L TRCK C C L R TRCK D DRWING HS EEN FINNCED Y THE TXES OF THE CITIZENS OF LOS NGELES COUNTY ND OF 9-1 " 23-1 " 23-1 " 9-1 " 80-3" 0 RE OF REFUGE SFETY WLKWY C L PLTFORM 3/30/ " 17-1 ".L.S STIR NO.5 SFETY WLKWY REV DTE Y PP REG NO EXPIRES 25-1 " 4-6 " 4-6 ".L.S R R R E. TEL F. D F.H.C-1 ENCH TYP STIR NO.3 PLTFORM END GTE TYP OPENING / EQUIP CCESS OVE WEST EMERGENCY FN R SEL HOLDER ESCLTOR NO " 7-6" 20-0" DOULE SIDED MP CSE ISSUED FOR SOLICITTION DESCRIPTION 6-10" 6-10" R OPENING TO IR PLENUM OVE VESTIULE STIR NO.9 GURDRIL FLOOR DRIN SINGLE SIDED MP CSE ETWEEN CR RRIER TYP TRSH RECEPTCLE TYP F.H.C-2 W/ E.TEL ETWEEN CR RRIER TYP 64-10" 51-11" DESIGNED Y T. TNK DRWN Y CHECKED Y IN CHRGE DTE K. EGMI Y. KIKUCHI T. TNK 3/30/ " 8-5" TTERY ELECTRICL MEP CHSE OVE TYP MECHNICL HV SWITCHGER C FF R ELEVTOR NO.4 ELEVTOR NO.3 UXILIRY POWER NO.2 ROLL- DOOR TYP F.H.C 223-1" PLTFORM EDGE PVER TYP PRE-WRNING STRIP TYP IR PLENUM REQ D QUEUEING RE TYP F.H.C-3 W/ E.TEL IR PLENUM FLOOR DRIN SINGLE SIDED MP CSE UXILIRY POWER NO.1 CCESS HTCH OVE INCOMING ELECTRICL SERVICE (DWP ) TTERY RELY 41-6" R SERVICE ELEVTOR CORRIDOR FF " SUMP PUMP ESCLTOR NO.3 STIR NO " REMOVLE PNEL TYP 54-8" LOS NGELES COUNTY METROPOLITN TRNSPORTTION UTHORITY 777 S. FIGUERO STREET 10TH FLOOR LOS NGELES, C T F DOULE SIDED MP CSE R OPENING TO IR PLENUM OVE VESTIULE STIR NO.10 DWP RELIEF EXHUST SHFT E. TEL F.H.C-4 R PLTFORM 29-6".L.S.L.S EMERGENCY EQUIP RE OF REFUGE SUMP PUMP EST EMERGENCY FN R TRCK DMPER TRCK DMPER 320 S.F CLE STIR NO.6 OPENING / EQUIP CCESS OVE ELECTRICL TRCK DMPER 320 S.F EQUIPMENT PD TYP DC DISCONNECT SWITCHES SFETY WLKWY TUNNEL VLVE WLL MOUNTED HNDDRILTYP REGIONL CONNECTOR TRNSIT CORRIDOR PRELIMINRY ENGINEERING 1ST/CENTRL VENUE STTION PLTFORM/NCILLRY LEVEL PLN WLL MOUNTED HNDDRILTYP SFETY WLKWY CONTRCT NO DRWING NO SCLE SHEET NO C0980 R "=1-0" REV 0 USER=Egam ik 9:49:24 M 3/28/ \Sheet\C0980r5110.plg Plot Driver= C0981_MT_HLF_W _PDF.pltcfg Pentable= C0981_MT_H_W.tbl Model Name= Default

Chapter 5. General Site and Building Elements

501 General Chapter 5. General Site and Building Elements 501.1 Scope. General site and building elements required to be accessible by the scoping provisions adopted by the administrative authority shall