HomeMy WebLinkAbout697 - ADMIN Ordinance - City Council - 1959/06/01.I I yew
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Original
5/Z2159
JUN 1 1959
ORDXNANCE NO,. 697
AN ORDINANCE REGULATING BUILDING AND
CONSTRUCTION 13Y ESTABLXSHING REOUIRE-
M ENTS FOR PILING
The City of St, I404i8 Park does ovciain
Section 11, Section 5 K x•4, Seetioxa 11504 Piles;
Section :!504, Files may he of wood, metal or concrete and
may be plated ed by driving, jacking, or may be moulded into place,
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The t29€ of piles not speeieically nzezaeoned herein or the use of
piles index conditions not speeificalfy covered herein, many be per-
mitted subject to a>pp.roval of the City Council, capon the sv bmiesnon
of acceptable test data, teslc ulations and other information relating
to the structural properties and load carrying capacities of such piles.
The Inspector of Buildings may require investigations to be
made of the building site where piles are to be used to ascertain
conditions which may be destructive to the piles or which may subject
them to ux•,usnal deterioration, On the basis of these investigations
the Inspector of Buildings may require protective= measures, or a
reduction in design loads which will, in hes opinion, provide ade-
quately against the special conditions disclosed,
1504.2.. The minimum requirements which shall be observed
are as loflowi
fin accurate record of all piling operations shall be kept by
the persons in change of the piling operations and a copy thereof
shall be submitted to the inspector of Buildings as soon as practicable
after the piles have been driven. Such record shall contain the follow-
ing information:. Job site address. Name of Owner or Contractor,
Date piles were driven., Length of piles below cutoff. 1/Veaght of
hammer and height of fall, or other proper hammer identification.
Average penetration. Bearing capacity of each pile. The piles
shall be a, part of said record- When load tests of piling' are con-
ducted, records of the test procedures and results including records
of the soil borings shall be filed with the Inspector of Buildings,
1504.3 Prior to the placement of any piles the Inspector
of Buildings shall be notified 24 hours in advance as to time and
place such operations will commence,
11504. 4, Before commencing piling operations for any
structure. a pile plan shall be submitted to the Inspector of Build-
iib€s for zpprovaL Any deviations from the approval of pile plans
arid specifications must be approved by the Inspector of Buildings
before proceeding further with the structure,
Page Z.
M 5 0r4 Si lie fo-ze ra3gr voziod pil,eft are d r'ven 8 c rtAfi to of
.,t ;‘.rr k,trt.b-E (-tEoi'- pal graaph
.. tC•r.,5 2s.., k;t.il rrs,t . .. %Ike u7,./wctQx' of !)di; gs
6 CQafilaag The !ronin cti,tn : F•r_t,e•r'=tu-t,ente `.pa ang
O?le_5 *•(%, del er% to rods ,-)o' .;:5en 't�'G?t?�Yog into ':;o�t� th511a Drit WJE^ le =r�
i'd4bS C= 1A�F a1� Iix1;E (.14.1C7)Cr;tt 'jfor Younr1 pllie6 F'ior r i `` t'u b 1tr ciirag( tol
for rectangtllaT piles but in entk*er a', i not 1t�:;3 t% 3; .? �•
!" l;tllvingro l rvt• :.- to- el-tte'r Opec PY'eg 0( beZ.: bk )1t
Cr. - - r-�t,it'.�9 ii ttta r rA,E:e Fh4,1) f' 71!7': te—sti than twice' the t r
ge
- ,r' rodThCi tirt,r tht :.a€agtona1 u,bmk^rtsson f. -r
!Aber .---ehe not 4c' s£ �l=v'�► e' .,'s,
Lni) pales shall be, trtA gger'rd about tr'at' came
:) t+ W 1p dr t(1*i,ci Equi tco a,t. le'ast a)11.e-beef q;.1 the cinametet
C : or =tk:111 inf este pipe tcv3. except t1' iSt in wood Ire or light grk•�:,^
n't:ek% H +lddtl of qr other lAig t wf..?sight cor tr:SR`tiork, the psileh r7o,ity b'
tits.,e2 s /Vie
pie.ss c» ni
cfclxae shall be siappor�te 1v at,
peamt _� prate i ra h;.. piles ai �J$c 4 e?.�i, „-As by the A."•t'+pec C„7
of Buil anckgs, to f_:aA!3r-t,t`t; ^tkbi1nty,
1 yv4, 7. T)urlrt , f)a' snr g,
'W1 er4 p:sih.8 Are dw;lver out, cJ. .;pus -`res more than
per& e;,;,t of i if r,4iF, ;�� F.�_pd ptl�' ; d shexac'd ata balt.ter ur
}t'q;f-r. l�hpe'F drlvezI Lx orc ons`-,j'%Eif the top daarrtetet' p�atr_r Uyf rr
dtEF q01 h���J t�r•t? the irlt,ptTtor of Fiti,Udinge, n ' rF quire the de aigre
to t !x)o. yin d ,)r pUee to be dxwera,
qe bvti.i d top of a pi/e shall be protecte!d. fxor,r
wbeu of yi•Ey;t.'at-eii 17y' tet.' gev-erit'# cf the driving,
jl
The t1:3F, shEdi be.. subject two the cNpp/ oval
}A's f e- to.e. of EioIlSn,at
If in the ':pirltclsl of. the lns.pector of Buildings, titin
cc;pcacnty of axe? wit: or group of piles has been it paire.
duri gt .;_vrrt,L or by ai_bsequentt operations, he triaiy 6 ;quarCD supplr:'-
iirerited ?,i cab tL: LPA d
tt??
Piles gv:-.11i.i a•ot Dab jettd through c_et}.aesive rnatet kale
Ozal opt app oval the kragrsec tc r of R ,aidings„ Piles sham be drivtst
rc
the rr'Fluirc d reblstdxlc t^ lrnrn..edl tely after jetting.
1 The o+il_cwa!,t,ik l05418. o►r_ piles shall be e. ete.,r.raii•tt:
by an formula or by ;est, but ander no r_irctutlatzsices
shall Foods pr'odut a stresses in the piles in excess ot those stresses
permitted herein,
Piles sb4.1 be designed as /Why supported short columna
�.°y a �fpat� k:tti2il'� 2, 1sc t' ractrit2. leVOI Cr tk,.):.t, 0.r'AV:yn. in t...us 'b*xq dld:g
h Literal oro rr tt,
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1504- :i 0- F)' lvi_ng Formula Loads,
The capacities of drives. piles shall be computed from
She inllr xcr[s ton 'wlas 'however, other recognized formulas may be
�Yser: \mites. o-,ro ,s r] by the. Inspector of Bssildings
T-7os-rstula For rile; driven by drop harnrrier
Forrssila b;i.'c.t pilar. driven by single or doisble act-
ing stets or air bairn/pers.
P.s Allowable load in pounds,
4WD 'Weight of hammer in pounds.
Hs Height of fall of 1 o.rn ns r in fest,
L v' Striking energy hi foot pounds,
SAve s a.ge penetration in inches per
blow for the last 5 blows,
SZ=Average penetration in irxches per
blow for the fast Z0 blows,
The maorimurn allowable lo.td on any pile as deter-
mined by application of a driving formula shall not exceed 10 tons,
A504, q tt. Pile Hammers.
Drop hammers for driving wood or steel piles shall
weigh a.t least 2, 000 lbs., and in no case shall the weight of the hammer
be less than the combined sseigbt of the driving cap and pile.
20 Steasnn or air driven hammers for driving wood or
steel piles less than 50 ft, in length shall develop at least 7, 000 ft.
lbs. of energy per blow, Wood or steel piles over 50 ft. long shall
be driven by 1;14mtners developing at least 12, 000 ft. lbs. of energy
per blow
Precas'' concrete piles shall be driven by stesrn or air
hamniers developing at least i2, 000 ft, lbs. of energy per blow.
11504 Load Tests,
Loads greater than those permitted by driving for-
mulas may be used when pile capacities are determined by load tests.
At least three ($h test piles shall be driven in each area in which the
soil profile is substantially uniform, and one of these piles, known
AB a control pile, shall be test loaded by maintaining a constant load
under increasing settlement.
The allowable working load shall be determined by
ane of the following methods or any other method of testing which
will not give allowable working loads greater than the following
methods
Page. 4,
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Method (a)) The allowable load shall not emceed 50 per agent of
the yield point They yield point shalt be defined as that point under
which ars increase fin load produces a disproportionate increase in
settlement,
Method ebb The allowable load shall rata exceed 50 per sent of
the load which canr.ee a net settlement of one onenhundreth inch (0 Olt")
per ton of test road which_ has been applied, for at least 24 hnara,
Load tests shall be conducted) in conformance with the require-
ments rAf "LoadeSetUernerat Relationship for Individual Piles, "ASTM
Iles i ae,ion i) 11 M43 -50T,
h driving the subsequent piles in the aarrae area as the control
pile, a pile shall be considered to have a capacity equal to that deter-
enined by the control pile when its penetration per blow is equal to or
less than the penetration of the control pile when driven through a
comparable distance.
A sauaffic Dent number of soil borings shall be made to determine
that the soil, penetrated by, and underlying the control test piles and
the remaining piles, is similar.
11504. 13., Group Pile Loads
Unless determined by test, the load on a group of
friction piles driven into plastic soils shall be reduced by a method
approved by the Inspector of Buildings,
1504. 14 Timber Piles.
11- Generali Piles may be of any species of wood that
will withstand driving and support the imposed roads within the limita-
tions as designated herein. Piles whose strength and durability have
been impaired by driving shall be replaced.
Butte and tips shall be sawed normal to the longitudinal
axis,
Timber piles shall be full length pressure treated,
except untreated wood piles may be used when cut off below permanent
water level_
Round timber piles shall conforms to the requirements
for Class A or Class B piles ASTM designation D25 -54T, or American
Standards Association designation 06-39, except as rnodified by para-
graphs (a) and (1:0 below,
(a') Wood piles supporting loads not exceeding 115 tons
may have the following dimensions for the lengths given belown
Min. ll+,fix_to
Butt Tip
Length, ft. Diam. Daaxn.
20 and less 110" 6"
21-30 incl. 1 " 6"
Over 30 12" 6"
The diameter shall be considered its average diameter
and shall be determined by dividing the circumference by 30 14, or by
averaging the maximum and minirncun diameters.
Page 50
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(b i All species of wood shall have rx►inimurrt of 1"
of sapwood at the butt end, except western red cedar which shall have a
minimum of 3" of sapwood at the butt cud,
Allowable Loads on Timber Piles,
The Taxi rattri allowable load on a wood pile having
a 6" tip shall be 15 tons, on a 7" tip 20 tons, on an 8" tip 25 tons. and on
piles having a 10" tip or larger 30 tons.
3, Preservative Treatment,
Treated pules shall be full length pressure treated
by an empty cell pxocese with grade one creosote complying with
American Wood -Preservers" Association "Sta_ nda.x•d for Creosote, "
designation P1--54, ox ASTM "Standard Specifications for Creosote, "
designation D390-53,
The treatment shall be made in accordance with
the requirements of the American Wood -Preservers° Aeriociation,
"Standard for Preservative Treatment by Pressure Processes - All
timber Products, " designation C1-56, and "Standard for the Preservative
Treatrnent of Piles. by Pressure Processes, '' designation C3-54, except
as modified or supplemented by paragraph (a) through (c) belowe
(a) Net retention --A minimum of 8 lbs. per pubic
foot of wood for piles entirely underground and capped with concrete;
a minimum of 1Z lbs. per cubic foot of wood for piles projecting above
ground and exposed to the atmosphere.
The minimum creosote penetration for the
various species of wood treated to a net retention of 8 lbs. shall be as
follows: Norway Pine -- 21" or 85% of sapwood
Southern Fellow Pine mm 24" or 85% of sapwood
Jack Pine and Lodgepote Pine -- it a" or 85% of
sapwood
Douglas Fir -- 3/4"
Western Red Cedar --
a
(b) Pile cutoffs shall be saturated by 3 oats of
hot creosote,
(c) A plant certificate of treatment certified by the
treating supplier or by an accepted commercial inspection agency shall
be submitted to the Inspector of Buildings,
Any treatment not in accordance with these speci-
fications shall be cause for rejection of the piles so treated,
Piles damaged during treatment shall also be
rejected.
1504.15, Precast Concrete Piles,
1; Concrete for such piles shall have a minimum
28 day compressive strength of 3, 000 pounds per square inch and no
such piles shall be driven until the concrete has attained 3, 000 pounds
per square inch as determined from test cylinders.
Page 6.
2. The design of such piles shall be in accordance
with the requirements for reinforced coryre;te colunsea.s as established
by "Building Regulations for Reinforced Concrete, " American Concrete
Institute designation 318-56.
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1504. 116. Case -In -Place Concrete Piles.
1. Concrete for such piles shall have a minimum 28
day compressive strength of 2, 500 pounds per square inch. The allow-
able working stress shall not exceed 24.5 per cent of the ultimate 28
day strength.
2. lkhere metal shells are driven, they shall be in-
spected prior to being filled so as to detect any undesirable deformation
of the shell and the presence of water. Vt.her°e it is not possible to re-
move water from the shells„ the concrete shall be placed by trernle to
prevent segregation,
3., Steel shens shall not be considered as contributing
to the strength or capacity of the pile unless the metal is 1/10 inch or
more in. thickness.
4. When reinforcing rods are used in a cast -kin -place
pile, the rods shall be assembled a+nd tied together as a unit and shell
be placed a minimum of 1 inch from the shell if a metal casing is
used and shall, have a minimum of 2 inches of protective concrete cover
if no permanent casing is used.
5. The cast -in-place pile shall have a top diameter
of not less than 8 i nches or a tip diameter of not less than 6 inches.
6. No casing shall be driven within 10 ft. of a con-
crete filled pike less than 24 hours old.
?. Splices shall be avoided insofar as practicable.
Where used. splices shall be such that the resultant vertical and
lateral loads at the splices are adequately transmitted, Splices shall
be so constructed as to provide and maintain true alignment and
position of the component parts of the pile during installation and
subsequent thereto. Proper consideration shall be given to the
design of-p/ices at sections of piles which may be subject to tension
or to bending. Except for piles which can be visually inspected after
driving, splices shall develop not less than fifty (50) per cent of the
value of the pile in bending.
Section 1504, 17. Steel Pipe Piles and Tubular Piles.
A. Steel used in pipe piles and tubular piles shall
meet the requirements of one of the following specifications:
ASTM A -252-54 Specifications for Welded and Seam-
less Steel Pipe Piles.
ASTM A -2.45-52T Specifications for Light Gage
Structural Cuality Flat Rolled Carbon Steel.
ASTM A -283-54 Specifications for Low and Inter-
mediate Tensile Strength Carbon -Steel Plates of Structural Cuality.
Page 7.
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2a Pipe piles driven opera ended shall have a rninineurn
nominal outside ti r,iete;r of 10-3/4 inches a71d shall have tninimurn
rar,xnin al wall thick.ne s s of 5/.11f, inches,
3_ Piles driven with closed Laps shall have sufficient
vvaAi
thicknesses to wr,th_•taod driving to the required resistance and be
adequate to w thetsnd the under -ground forges developed during install-
ation. Wall thicknesses less than 1/110 inchshall not be considered as
contributing to the strength or capacity of the pile.
4. 1`-io tapered pale shall have a top diameter of less
than 8 inches ox a tip diameter of less than 6 inches. No pile of uniform
section shall have a daarneii er of less than 8 inches.
5. The allowable compressive working stress in steel
pipe shall not exceed 110, 000 lbs. per square inch.
6. When pipe piles are filled with concrete, the con-
crete shall have a minimnau-n 28 day compressive strength of 2, 500
pounds per square inch, and the allowable compressive working stress
shall not exceed 22.5 per cent of the ultimate 28 day strength.
7, The requirements set forth in Section 1504. 16
paragraphs 2, 4, 6, and 7 shall also apply to this section
1504. X8. Structural Steel Piles.
1, Rolled structural steel piles shall conform to the
requirements of "Steel for Bridges and Buildings, " ASTM designation
A7 -53T.
2. The allowable compressive working stress shall
not exceed 10, 000 pounds per square inch.
3. The limiting dimensions of the rolled section are
as follows;
(a) Minimum nominal thickness of metal 3/8 inches.
(b) Minimum nominal depth and width of Section,
8 inches •
(c) Maximum flange projection 114 times the thick-
ness of metal.
4. Splices.
The requirements set forth in Section 1504. 116,
paragraph 7, shall also apply to this section.
Adopted by the COT • until �. a! 195610
• Attest;
ministration;
Prepared by:
Approved
as to form and legality:
City Attorney
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AFFIDAVIT OF PUBLICATION
St. Louis Park Dispatch
5407 Excelsior Blvd. St. Louis Park, Minnesota
State of Minnesota
County of Hennepin }SS•
JOHN E TILTON, being duly sworn, on oath says that he now is and during all the time herein -
stated has been JOHN E TILTON, the publisher and printer of the newspaper known
as The St Louis Park Dispatch, and has full knowledge of the facts herein stated
That for more than one year immediately prior to the publication therein of the printed
Ol'dinanae$0.--6i?- - dr _ Construstion
hereto attached, said newspaper was printed and published in the English language from its
known office of publication within the County of Hennepin, State of Minnesota, on Thursday of
each week in column and sheet form equivalent in space to 450 running inches of single column
two inches wide, has been issued from a known office established in said place of publication
equipped with skilled workmen and the necessary material for preparing and printing the same
THE ST LOUIS PARK DISPATCH has had in its makeup not less than twenty-five percent
of its news columns devoted to local news of interest to said community it purports to serve, the
press work of which has been done in its said known place of publication, has contained general
news, comments and miscellany, has not duplicated any other publication, has not been entire-
ly made up of patents, plate matter and advertisements, has been circulated at and near its said
place of publication to the extent of 240 copies regularly delivered to paying subscribers, has been
entered as second class mail matter in local post office of its said place of publication, that there
been on file in the office of the County Auditor of said county the affidavit of a person hav-
as
first hand knowledge of the facts constituting its qualifications as a newspaper for publication
legal notices, and that its publishers have complied with all demands of said County Auditor
proofs of its said qualification A copy of each issue has been filed with the State Historical
iety, St Paul • • • •
That the printed-___ordinance---_v9#H1"
hereto attached as a part hereof was cut from the columns of said newspaper, was published
therein in the English language once a week for__Qne successive weeks, that it was
first so published on the__*Si day of____ , 1999___and
thereafter on of each week to and including the
day of
, 19____, and that the following Is a copy of the lower case
alphabet which is acknowledged to have been the size and kind of type used in the publica-
tion of said I
Ordinance No. 697...•
ab r efghuklmnopgrstuvwxyz
Subscribe$ and sworn to before me this____ ' `r'� _ day of_
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Publisher
T-
THOMAS D WILLIAMS
M Ptfbira,-j eflneprtr-Coi.nty+Mi n
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ORDINANCE NO° 697
Entitlecis AN ORDINANCE REGULATING BUILDING AND
CONSTRUCTION BY ESTABLISHING REQUIREMENTS FOR
PILING
Introduced by Date___.,_.
First Reading -Date 5-25-59 WftiVed Yes
Second Reading-Date6-1-59 Wait+od Yes
Vote: Aye 7 Nay
Published Date June 4, 1959
,ffect vie Date June 19. 1959