AHLIN - los-altos.granicus.com

AHLIN

January 20, 2017

David Kornfield Planning Services Manager - Advance Planning City of Los Altos 1 North San Antonio Road Los Altos, CA 94022

Dear Mr. Kornfield,

Our firm recently completed work on the entitlement of a five-story, 21-unit condominium project at 4880 El Camino Real for our clients, Peggy Galeb and Jeff Taylor (LOLA, LLC). The project was approved by the City Council on September 13, 2016.

Our clients submitted construction documents to the City at the end of December 2016 for building permit. The project features approximately 10-foot cei lings in the common areas and in the residences, eight-foot interior doors, as well as a roof top terrace with an elevator providing equal access to its outdoor amenities. On January 5, 201 7 we received your letter communicating the Planning Division's building permit plan check comments. The comments included a request that we "limit the elevator tower to a maximum height of 11 feet above the roof deck in accordance with the Resolution of Approval" (comment no. 10) and that we "provide specification on the type of elevator system and indicate its relative speed" (comment no. 11 ). This letter seeks to address these two comments.

The elevator we are proposing for this project, the Kone Monospace 500 Elevator, is being specified for its industry minimum overhead clearance requirements and its eco-efficiency. We believe that this elevator is appropriate for the scale and quality of the approved project. It will provide an eight-foot door which wi ll match the other doors in the project and wi ll have a nine-foot elevator cab consistent with the 9'-10" ceilings in the city-approved , five-story design. Kone is globally recognized as an industry leader in the design and provision of eco-efficient, machine room-less traction elevators. The machine room-less design does not have a dedicated machine room above the elevator, thus reducing the height of the shaft. The speed of the elevator will be a minimum 150 FPM. The specifications for the Kone Monospace 500 elevator are attached to this letter.

It is physically impossible to install the specified Kone elevator (or any other elevator of which we know) to service the rooftop deck within a rooftop structure under 11 feet. The minimum height of the rooftop structure needed is 15'-6". It is worth noting that even if we were to install an elevator cab of similar quality with a cab height of 8 feet-a cab height which we do not recommend for this project due to its typical door and ceiling height-the minimum height of the rooftop structure wou ld need to be 14'-6".

We also attach for your review some perspective studies showing what, if any, portion of the 15'-6" elevator shaft would be visible from several vantage points on El Camino Real. As you will see in the studies, the elevator shaft is hardly discernable given its location beyond the building's main facades. We believe that most people on the street wi ll not be able to discern between a structure at 11 feet or at 15'-6".

Please feel free to call me directly with any questions you may have about the specifications of the elevator cab or the requirements for its installation in our project. Thank you very much.

Yours sincerely,

Associate / Senior Architect

Attachments: 4880 ECR_Elevator Height Study Views and Kone_MonoSpace500

5865 Owens Drive ~ 1 925 251 7200 WWW.DAHLINGROUP.COM P,easanton. Cal1forn1a 94588 USA + 1-925-251-7201 fax

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HOISTWAY PLAN VIEW

TOP LANDING ENTRANCE/ INTEGRATED CONTROL DETAIL CONCRETE

TV«ll.AYEJtS~lfTOllll'WAU (v.lS) •tOUIU I>AlBA.C<O"CONT'tOLLut

TOP LANDING ENTRANCE/ INTEGRATED CONTROL DETAIL DRYWALL

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ELEVATION IN HOISTWAY LOOKING AT MACHINE

8RKTS ABOVE TOPMOST t.ANOINC . IMPACT 1.0A~NC REACTIONS (lDfJ

REACTION LOCATION A B

X OIRECTION I 1990 I 250 SC

YOIRECTION

8 RKTS BELOW TOPMOST L.ANOING • RUNNING REACTIONS (ltlfl

X otRECTION I 300 I 250 I SO

YOIRECTION )10 210 100

MAX DEfl.ECTIONNOT TO EXCEE00.12S" (lmm) DUE TOAPPUED LOADS

SBSIIC ZONES) & 4 • Ail 8RKTS LOCATIOtiS -lllPACT LOADING (I,~

X OIRECTION 3100 ?900 '~

I JODO I 2200 I 3100 MA.X OEfLECTION NOT TO EXCEED 0.125" ~ DUE TO APPueO L0,,.0$

· ORTHOOONAL REACTIONS IX) NOT OCCUfl:SMULTAt*OUSLY "CAI.CLJ\..ATIONS BASED UPON uac SEISMJC ZONE 3-4AN018CO ~ lp • Sds s 1.0 • ACCEPTASLE GUIDE RAJL BRACKET ATTACi..!ENT MATERIAL CONCRETE. STEEi.,

OR INSERTS

Vf:RTICAL FORCES ONTO PfT F LOOR (lbf)

REACTION LOCA110N El ,SlQO

-v£RTICAL REACTIONS A, 8 l COCCUR S IMULTANEOUSl..Y. VERTICAL REACTIONS D&. E OCCUR INOMOW.LLY A NOSEPARATELY FROM A , 8 & C.

HCNSTBEAM &. UFEU NE VERTICAL FORCES (11:11'1

REAC'TtCNLOCATK>N l!I ZOIIU;"CTION 5700 ,.,. ,.,. 500D

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ATTACt-t.lENT QETAILS

FlOOR BY FLOOR HEIGHTS CHART

SCALE NOT TD SCALE

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~ . ~. JB SECTION VIEW

--­I PREPARATORY WORK BY OTHERS THE CUSTOMER OR CUSTOMER'S CONTRACTOR, SHALL BE RESPONSIBLE FOR THE FOLLOWING

CONDITIONS PRIOR TO THE COMMENCEMENT OF WORK AT NO COST TO KONE, INC LOCAL CODES SHALL PREVAIL WrlEN APPLICABLE

l. PROVIDE ACLEAR. PLUM8HOISTWAYOF Tl1E SIZE SJiOM,,! ONTlif FlNAt l<ONE LAYOUT. VARIATIONS MUSTNOTflCCEfO t • (TOlfAAN::f • 4" • 11

l PROVIDE -'OEOUATE S~Tl'"ORGUDE RAIL 8RACl(ETS (INCU.()ING OMDl:R 8EAMS FOR MUI. Tll>LE ELEVATORS INA~ HOIS~Y) FROM PIT FlOOR TO THE TOP

Of" THE HCISTWAY ANO NOT SPANI-ING FlJRTl-tER THANALLCM'E08Y THE GOVER/,1'-IQ C00E AU"TliOAtTY. flREPROOflNG SHAU. BE AFTER IPGTALLATION Of" 8AA.CKETS.

l . HOISTWAY VENTILATlCN SHAU SE PRCVIDt"D PER C00E REQUIREME"'1"S.

11. ANJ.8EAM. PROIIIDEOBY KONl;. MV$T SE tNSTA.LLl;O IN THE ELEVATOR HOISTMY OVERHEAD PER THE KONE t1NAI. LAYOUTDRA\.'ANGS.

ll. FOR PROPER Eout?MENTOPEAAT10N, Tl-1£ IMCHlr-E SPACE AT THE TOP ~ Tl-IE HOISTWAY MUST BE PROPERLYVEWT'ED PER CODE REQUIREMENTS

IMXAlLOI/.IEDHLMDl'fYIS 95',1, NON-CONOENSING. HOIS"TY.-.YMUSlMA.INTAINA ffMPEAATURE BElV.t:fN.ill FA.NO 10.ill'"

m;mm MonoSpace ~~~;,_, •. PROJECTlONS REOUIRING BEVELING I NACCOAOANCE 'MtttCOOE REOUIREMHlTS SHAL.L8E BEVELED AT AN ANGI.E NOT LESS n-w-1 75 DEGREES FROM me HOAIZONTAL..

S. PROVIDE R EMOVABLE. OSHA COMPLIANT BARRICADES AAOVNO All HCXSTWt.Y OPE/,INGS AN'.) 8ENIEEN ELEVA'TOAS INSI DE OF THE HCISTWAY AS REQUIRED

PROVlOE "MO LIFELINE ATTACI-MENTS AT™f TOP, FftONTOF THE HOISTWAY,

6- AAAANGE FOR All SLOCK CUT / CUTOUT OF OPENINGS TO INSTALL HALL ~SHIUTTONS. StGNAl. fUlTIJRES.ANO HATCH DUCT.

7 PROVIDE A ORY PIT AEIW'ORCED TO SUSTAIN VERTICAL FORCE F'FIOM FWl.S ANO &UffERS. R EFERENCE THE REACTION LOAO TABLES FOR VfRTlCAL f"ORCES. SI.MPS

AI-O I OA PUMPS ~RE Pf;AMITTeD) LOCATlOWfTHN THE PfT 1,-'AY NOT I NTEAFERf'MTHTHE El.EVA TOA EWPMENT

I. PRCVIOf.SIJIT"8!.E LlrnffiNG FOR THE MACHINE SPACE\\,ITHA LIGt<T SWTCH LCCATEC IN THE HOISlWAV. PROVIDE A UGI-IT t1Xl\,/Rf ANDA SEPAAATEGf"Ct

PROTECTfO DUPLEX CONl/f:NIENCE OUT\.ET 1N THE ELEVATOR PIT.

til. ENTAANCf ~LS AAE T0 8E LEFT OPEN UNTIL TME ELEVATOR ECUPMENTLS INSTALLED. ADEQUATE SLH'PORT ~ ENTAANCE ATTACt'MENTPOINtS IS

REQI.JREO AT All l.ANOINGS AJ.L f"l "-ISHEO Fl.OORING -'NDGROIJTINGIS T08E INSTALLEOAFTER THE ENTRANCE FRAMES A.RE INSTAUEC

10 A PIT LAOCER IS SUPPLIED BV l<O~ UNLESS Dn-tERv..lSE NOTED ON THE !.AYOVTORAWING. LOCATEAIIO INSTALL PER KONE~ 1.AYOlJT ORA~O,IGS

ll. THE ACCESS DOOR TO THE CONTROL SPACE OR THE CONTROl ROOM MUST BE SECUIIEDAGA.INSTUNA.UTl10R.llfOACCESS,

IT SHALL 8E SEU'-lOCl(ING ANO SELF-CLOSING.

I.ii. PROYtOE:A 15....w» 102V AC FUSED SERVICE W THGROUNC r,AA EMERGENCYLIGHT SUPPLY If AVAILA&E)CONNECTEO TO EACMCON'lll:Cl CASINET FOR

LIGHTING AND FAN. PRO\IIOE DE DICATED PHONE LINf TERUJW.Tl NG ATT);f ELfVATOFt CONTROl CABINET.

I S. FOR CONTROL SPACES lOCATlO REMOT!L Y f ROM n1E ELEVATOR HCISTWAY. PR(MDf A GOVERNOR ACCESS txX'.IR OF Sil£ ANO LOCATION PEA

KONE FINAL LAYOUT ORAW NGS. ntE ACCESS DOOR Stw.i 8E SECI.REOAGAINST UNAUTHORIZED ACCESS

16-. f"OR INTEGRATED CONTROL SPACE LOCATED IN SEISMIC AR&..PJ:ICMOE A SELSMC SW TCHACCl:SS DOOR Of" SlZE AOO LOCATION PER l<ONE FINAL

LAYOUT DRAWINGS. THI: ACCESS DOORS~ BE SECUREO AGAINSTUNAl/THORIZECACCESS.

17. PROVIDE A Si.HABLE WOAl<lNG E>,,"\11RONMENT INCt..LJOtNG ADEQUATE ACCESS TO THE BUILOING. PROPER LIGHTING IN ALL AREAS. CLEAN ANO SAff

STORAGE ADJACENT TO T11f HQI.S'!Y.-.Y. ANO SIJfflClENT ON-SIT!: REFlJSE CONTAINERS FOR THE DISPOSAL Of" ELEVATOR PACl<IMGMATERIALS

111 THIS ()RAY-,INGMUST !IE REVIEWED ANOAPPROI/EO av A LICENSED PR CFESSIONA.l. TO ENSURE COMPlL'M'.:E \MTH LOCAi.. &Ull.DING CODES.

UI. THESE ORA'MNGS ARE FOAINf'ORMA.TlCNPlRPOSES ONLY ANCI MUST NOT BE U SEC FOR CONSTRUC:tlON~POSES. FULLY DETAILED

CONSTAUC:TlCNDRA'MNCS AAE AVMLABLE FROM n-E PROOUCT IM.NUFACT\MER.

1 SPECIFICATIONS PR OOLCT NAME KONE IIICHJOSPACE 500 ELEVA TOR

SEISl,IIC

CAPACIT'Y 5000L8.a.lA

SPEED 150 FPM

OOOR LE.FT OPENING

TRAVEL 69"11'

CONTROL LOCATION INTEGRATED

PowtRSUPPLVD

REOLIREO FUSE AMPS 90.0

CONTROLLER 1-!EATOl/TPUT 2.3

MA.CM"-E HEAT QUTPL/T l.5

4M0 LOS ALTOS

ARCI-ITECT 0.-.~

BRETT BAILEY •\11\2016

ORAWlfU SHEET

PXID 3"11S

7

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~ APR 172017

CITY OF LOS ALTOS PLANNING

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