HomeMy WebLinkAboutORD 342.., .. , .. ~,:·:::.:·,··.•.: .·,··:·,··-··\··:··~ ... ·:::·:·~-. ~-•:t• ......... • ..... ,. •z,•,; .. 11!!_?!1111. ', ;-•,. IJll'.,\ 1111 .. ~~·. ·:·"'F~~r, 1111111i111, •.-4'...,_; ,•.• ... -"'' :-~'. -•• .. --=•z.•t• .. t•/-llllllllllllll•t~•._,?•-.. ~11111_ .... ~•lll!. :•s. ~lfllllljf .tll!llil,.:L•.n•--•.111!. :t•.~lllll411!1. -•c•a•aw111.•. 1!111231111t"'s a ... a•a--•.•\ ---2•~---_,= .. 1--,.
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The CounCi 1 o.f the city oi Pal. o .l.l to
. DO O~AIN ae follow1l::, .·.·
, · .:: ·eeot!on i .. !bat eect1on 69 o~ Pa.r1 D
of the official: build~ oo4e of the :Ci1:y o~
Palo Alto., enU tled, ; •!find _Pressur·e" ·be ammied
to read as !ollowe:
S~ction 69: Lateral or Horizontal
?ress'tll"e: : 111 buildir.igs · sb.allbe-braced ·to
resist the lateral stresses which shall be .. cal-·
c:o.l.ated by ty,_o independent methods and that. one
0f the calcu.l'atfons Yhicb. calls for the stro?Jger s t:ru.c tur.e shall be used in the design and
coIJ:et?'!lct:r on.. :Sy the :first method the .str.&eaes
shsll be cslc-..J.lated s.s the effects of a presso.re
ap-plied hor1zontally to the elevation ~.£· the
bu:l.ld.ing above the foundation, :f'igu:red rin pounds
pe1· aqua.re fo;ot of area as hereinafter specified..
By the second method the stresses shall be
calculated as the effects of a force :ap.plie4
horizontslly at tb.e center of gravity of the
dead load~ In ·ooth methods of caloulatio2i-the
PI'.ess·a.re or force, es the case 'lIJlf3' be, a.hall be
asE~umed to come from any possible di:r·ec::tion at
r1s;ht. s.ngl~s to any elevat:.ton of the 'building.
The factors to be employed to fix
the nressure uer sat1.are :foot of ares o:n th-e
siole· a.cove the foundatioD. or the lateral ::tO-rce
ap~ll'ied at the c ente-r o:f ,gravity shall vary 1fi th
the1 character of the foundation me.teria.J. and
sh~l.ll be as fO·llows: ,
•
, Cl) Wnen ~ e :foundation rests upon
mai;erial upon which a lo~~d. of 4 tons or more
pel:-aqua.re foot is ·aii~wi:!d. the lateral :preaeure
employed in the first m~ffuod an all ·be a.sea.met
a;e · eq ui val en t to 20 pou nc1 s :pe r s qu. are to ot ;
in applYi.ng the second method the ·h.C>rizontal
force applied at the cent er of g'ravi t.v sl:s.ll be
a~sumed as 10 per cent of the load up'oii the
columns. a ·
: ( 2) When th<: f.oundatio:h rests upon o
mft.1~erial.; upor. which s lo·ad. o:f 3 tons. pe:r ·squuf)
f'oot. is allowed, the la.teraJ. pressure era.ployed
in the ·first method shall be assumed s.S ea·llil'a-
1 ent to l() pounds per s qua.re fo;ot ;. " in appiying
th~~ seco1:il me.thod the horizont,al for·ce applied
a.t t~e e:imter of gravity shall be S.$SU.med as
16 per cEmt of the lead upon the eolumns ..
( 3) W'nen the founda.tioh' rests
up<>n material upo~ -'N,hich a loa.d of .2 t:ons p~r
square foo·t is allowed, the lateral preemre
employed in .the :first meth.od shall be aa$um&d
as equivalent to 45 pounds per ~quare foo~; ,
·in.applying the second method the. horizoriial
.fo1~c& aP.Plied a:t the cent er. o'f gravity shall
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ORD 342
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bei asStUned as· 2.0 per cent of the load upon the
columns..:•
; ·.· The•, eombi:Oed. dead loa.d •. :l-1 v~ .load and
lateral atr:ess eh.all not·· excec-"\ the 'Oermisai bl e
dead 411d li~e ioad 8.tress by mere than 3Z-l/3
per _ceut• ·
: .I:r1 no. caa-e shall the over-turning· .·
moment. due to l&teral farces" exa-~ed 50 per cent.
of the moment· .due .to the. weight cif the atmc.tu.re •
.u~1. exter_ior ·wall girders shall have knee brace
connections to columns. Provision she.11 be :na.de
fo1~ diagonal portal or knee brs.oing to resist
lateral :for'ees, and such bracing shall be
continuous from top sto:ey t 0 arid including
basement.
~ All b·uildiii.gs shall be firmly bonded
ind. tied· togetheJ; as to their parts sud' eaoh one
as a whole in Stlch msnner that every connection
shall bfJ designed to develop the :full cs.pacit#
ofthe memb,ers joined when subje.-cted to. the .. ·
forces .defined above, with due regard to .the
founda.ti;on material ..
, The prov;;(sio-.ns of the precedi;ig
paragraph shall apply to all veneer :finish, cornices
s.ncI ornamenta:'l details:, which shall be bondeQ._
into the atru.c ture ao as to form an integral'. ..
pa.rt.of it. This applies to the interior as well
as :to the exterior of the building.
Bea.riDg walls. and other walls of Ullit
masonry conetrtiction shall be tied together. .a.t
the level of each flo.o:r line from outside to,
O'J. tside of the stroe ture, by contj,nuoo::e iron rode
or .by other bonds of equivalent strength and t..hey
shall als·o be tied to sJ..1 verticel pa?"ti tion
walls wherever practicable •
The above and_ forego :ing ord.:tnanc e Ya.a
duly passed by the Council of the City of Palo
llto at its adjourned regu.:)..ar meeting held on th~
l9:th day of April, 1926, by the following; vote:
AYES: ~ertsche,,. Borin~:9e.thcart, Duvene?k,. Easterday,
Hobart, c1orda:n; 'Kelly, Lenste.n, '.rhoits,
Thomas, Wing, Wooil. ..
NOES: None •
.IBSENT:. Oool~y, Cottrell.
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Attest!
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,P'r-2 / «~ City Clerk
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