20110116 Permit Pkg 01052011City of Yelm
Community Development Department
Building Division
Phone: (360) 458-8407
Fax: (360) 458-3144
Applicant:
Name: CITY OF YELM (I)
Address: 105 YELM AVE W
YELM WA 98597
Permit No.: 20110116
Issue Date: 1/05!2011
(Work must be completed within 180 days)
Phone: 360-458-3244
Property Information:
Site Address: 204 2ND ST SE Owner:
Assessor Parcel No.: 64420500100 Subdivision:
Contractor Information:
Name: CITY OF YELM (I)
Address:
105 YELM AVE W
YELM WA 98597
Contractor License No.:
Phone:
Expires: 0/00/0000
Project Information:
Project: COMMERCIAL REMODEL
Description of Work: CITY OF YELM DOWNTOWN ELEVATED WATER TOWER FOOTING MODIFICATION
Sq. Ft. per floor: First Heat Type (Electric, Gas, Other):
Second
Third
Garage
Basement
Fees:
Item
BUILDING
Applicant's
I certify that
to be true ar
Yelm regula
easements
registered it
Contractor Fees
CITY OF YELM (I) $ 0.00
TOTAL FEES: S 0.00
lave read and examined the information contained within the application and know the same
correct. I also certify that the proposed structure is in conformity with all applicable City of
ns i~cluding those v ruing zoning and land subdivision, and in addition, all covenants,
~ re trillions of cor If applying as a contractor, I further certify that I am currently
CITY OF YELM
Lot:
OFFICIAL USE ONLY
Sets of Prints:
final Inspection:
Date ~ .~j • ~(` I Date:
By: _
~~ CITY OF YELM ~-~J~ J ~J`
COM ERCIAL BUILDING PERMIT APPLICATION FORM
• Project Address:~(,~ ~ ~~~~ Parcel #:
Zoning; Current Use: Proposed Use:
New Construction Re-Model / Re-Roof /Tenant Improvement
Plumbing Mechanical J Fire Prevent/Suppress/Alarm_~ -Other
Project Description/Scope of Work: W~
Project Value: _ G
Building Area (sq. ft) Parking Garage 1s` Floor 2nd Floor 3 or
Building Height
Are there any environmentally sensitive areas located on the parcel? It yes, a ~
completed environmental checklist must accompany permit application.
CITY,
ARCI
ADDF
CITY
GENE
ADDF
• CITY_
CON"
PLUMBING CONTRACTOR TELEPHONE
ADDRESS EMAIL
CITY STATE ZIP FAX
CONTRACTOR'S LICENSE # EXP DATE CITY LICENSE #
EXP
LICENSE
MECHANICAL CONTRACTOR TELEPHONE
ADDRESS EMAIL
CITY STATE ZIP FAX
CONTRACTOR'S LICENSE # EXP DATE CITY LICENSE #
Copy of City Mitigation documentation (TFC).
I hereby certify that the above information is correct and that the construction on, and the occupancy and the use of the
above described property will be in accordance with the laws, rules and regulations of the State of Washington and the
City of Yelm.
Applicant's Signature Date
Owner /Contractor !Owner's Agent /Contractor's Agent !Tenant (Please circle one.)
All permits are non-transferable and will expire if work authorized by such permit is not begun
within 180 days of issuance, or if work is suspended or abandoned for a period of 180 days
105 Yelm Avenue West (360) 458-3835
PO Sox 479 (360) 458-3144 FAX
Yelm, WA 98597 www.ci.yelm.wa.us
/ .r-~
/ /
STRUCTURAL CALCULATIONS
FOR
City of Yelm Downtown Elevated Water Tower
Footing Modification
Yelm, WA
CLIENT: City of Yelm
SEI PROJECT NO. A10117.02
BY: A.L.Packard
December 2010
EXTENT OF ANALYSIS: The Structural Calculations and Drawings included with
this submittal have been prepared exclusively for the above referenced project. The scope
of this submittal has been limited to the pedestal foundations of the elevated tank. No
other elements of the structure have been observed, designed, or analyzed by Sargent
Engineers, Inc.
~ F ~.
~~~z~~z~,i~
:~
SdNZGENT
Sargent Engineers, Inc. 320 Ronlee Ln NW Olympia, WA 98502 • Tel 360 867-9284 • Fax 360 867-9318
_-+
~~~ Sargent Engineers, Inc.
320 Ronlee Ln NW
Olympia, WA 98502
Tel (360) 867-9284
Fax (360) 867-9318
Project: Yelm Tank Foundation
Location: Yelm, WA
Design By: A.L.Packard
SEI #A10117.02
Yelm Downtown Tank Foundation: Adding Concrete
Hau
Foundation Dimensions:
- per sketches provided by the city of Yelm
a := 40in
b := 70in
nc~n'= 80in
d := 12in
~= 61.8in
Volume Calculation:
2
Atop := a
2
'`~bot ~= b
e
Vped :_ (Atop + Abot + Atop''`t`bot)' 3
2
afoot = c •d
Vtot ~= Vped + afoot
3
VCey := 299ft
u~„
Square width of pedestal at top
Square width of pedestal at bottom
Square width of footing at bottom
Height of footing
Height of pedestal
Atop = 1600.0•in2 Plan area of top of pedestal
Abot = 4900.0• in2 Plan area of bottom of pedestal
Vped = 110.9•ft3 Volume of pedestal
Vfoot = 44.4•ft3 Volume of footing
Vtot = 155.3•ft3 Total volume of foundation in ft3
Revised Total volume required per lateral
analysis See Column Support CheckR MCD
VolumeLncrease.xmcd Page I 12/27/2010
.•
Sargent Engineers, Inc. Project: Yelm Tank Foundation
320 Ronlee Ln NW Location: Yetm, WA
Olympia, WA 98502 Design By: A.L.Packard
Tel (360) 867-9284 SEI #A10117.02
Fax (360) 867-9318
Encase each existing pedestal footing with a square concrete ring.
~= 30•in Proposed depth of the concrete ring to be
added to the existing pedestals
b-a
2
a2 :_ •2•in•2 + a a~ = 41.0•in Width of the existing pedestal at 2" below
e its top face.
b-a
Z Width of the existin edestal at + 2 "
b,(g) :_ •(g + tin) 2 + a b,(g) = 55.5•in g P g
e below its top face.
Atop, := az2 Atop2 = 1678.6•in2 Plan area of the existing pedestal at 2"
below its to face
2 2
Abo~ := b2(g) Abot3 = 3084.0•in Plan area of the existing pedestal at g +2"
below its top face.
Vreq - Vtot Atop2 + Abot2 + Atop2'Abot2
f(g) :_ +
g 3
Volume Check
2 '`~top2 + Abot2 ~" Atop2' Abot2 2 3.0
Vped2 ~= g'f(g) - 3 'g g'f(g) = 184.4ft
Vped2 = 143.7 ft3.0 Vreq - Vtot = 143.7 ft3'0 OK
For depth of g, f =the total square width of concrete encasement ring for the existing
pedestal footings. Calculation of "f' considers and excludes the mass of the existing
f(g) = 103.1 •in pedestal. This encasement will create the mass of concrete needed to resist
overturning for Condition 3, Empty with wind, per the orginal foundation evaluation
calculations. SEI job A06143.00. See appendix
Reinforcement for encasement
The encasement concrete acts as a ring of mass around the existing footing. Reinforcement for shear or
flexure is not provided. Minimum reinforcement shall be added for temperature and for toughness around
the inner opening.
rf~g) a2+b2(g)
Atemp ~= I 2 - 2 2 •g•.002
Atemp = 1.6• in2
VolumeIncrease.xmcd Page 2 12/27/2010
Sargent Engineers, Inc. Project: Yelm Tank Foundation
320 Ronlee Ln NW Location: Yelm, WA
Olympia, WA 98502 Design By: A.L.Packard
Tel (360) 867-9284 SEI #A10117.02
Fax (360) 867-9318
Atemp
= 5.3
0.3 I - in2
Provide (3) inner rings and (3) outer rings of # 5 hoops with # 5 verticals at 18" O.C., along each ring
Bearing pressure checks
1'conc ~= 150•pcf
42.4•kip + VtoY'Yconc
sexist =_ sexist = 1930.7•psf
Abot
If ring were to settle onto the existing footing bearing pressure would be
Vped2'~Iconc
Qwring ~_ sexist +
Abot2
lbf
SOOOOga] • 62.4 -
µ'water ~= 4
µ'water = 780.0•kip
"'water
= 22.9•ksf
Abot
o'~ing = 2937.0•psf
Weight of a full tank far exceeds added weight of conc. Based on history of the reservoir and no
know propblems with settlement, the added concrete weight to the existing pedestals is insignificant.
VolumeIncrease.xmcd
Page 3
12/27/2010
x'11 ~ ~ h = X = °~
i~
~~ I
11 ~~
tt
----~~ . ~ ~t- ~'
n -~~ i-r
la
~1~^
~~
r
12/03/2010 FRI 15:09 FAX 3604588417 CityofYelm Public Works
~'~~~~--
r-- ~--
__----
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~~~ ~
r^^ ~ ~~~~
X002/002
J
~~~
•
Downtown Reservoir
Yelm, Washington
A. L. Packard
SEI# A06143.00
COLUMN DESIGN FOR COLUMN SUPPORTED TANK xREVISED 12/02/10
The calculations in this mathcad revise the amount of uplift at each footing. The weight of (2) column legs has
been added to the total weight of the tank when used to determine uplift.
P =sum of vertical dead loads, kips. Pempty := 22.18•k
N := 4 =number of columns.
nrw
A := 3.18•deg =slope of columns
M =overturning moment of wind or seismic forces about support base, ft-lbs.
Ra := 43.6ft• 0.5 Radius of tank base.
COLUMN LOAD: Wind Controls
Case 1 -Tank Empty + Full Wind:
P := Pempty
M := 1604.3•k•ft
PwEla ~= I N + R N) cos(9) PWEIa = 42.4•k
PWE2a ~= I N R N) cos(h) PWE2a = -31.3•k (uplift)
\ a
Case 3 -Tank Empty + No Lateral:
1
~~= Pempty•
cos(h)
= 0•k•ft
P
PF := N PF = 5.6•k
COLUMN CHECK
r := 4.613•in min column radius of gyration, see enercalc printout
~:_
12.095 • in2
columms cross sectional area, see enercalc printout
Imo{ := 1.0
~= 35.5•ft max unbraced length
K• L
- = 92.348
r
Fa := 13.84•ksi allowable stress per ASD table C-36.
PWE1 a
ACeq .
F
a
Column-SupportCheckR.xmcd Pages ~ 12/3/2010
Downtown Reservoir A.L.Packard
Yelm, Washington SEI# A06143.00
Areq = 3.064•in2 > A:= 12.095•in2 columns ok
LATERAL BRACING CHECK
A := 0.994• in2 cross sectional are of l .125" diameter lateral rods
iwv
fu :- 58•ksi lateral rod ultimate
fy := 36•ksi
V3 := 0.5.16.4•k lateral load to bottom horiz member
83 := 51•deg bracing angle
V3
F3 • cos~A~ F3 = 13.03•k lateral force
3
Fauow = 0.5•f„•A Fallow = 28.826•k
F~~:= 0.6•fy•A Fa~~o~,,, = 21.47•k laterals ok
ANCHOR BOLTS:
Existing anchorage: (1) 2" A36 bolt per column base plate
AS := 2.3in2 =root area of existing bolt
~:= 58•ksi
~:= 36•ksi
Pbotc ~_ -PwE2a Pbolt = 31.299•k Anchor bolt uplift force
Min. tensile area required:
Pbolt P
bolt
2
2
u =
Amin.u = 1
Amin Amin.y= 1.087•in
.079•ln
Amin.y:=
.
0.5•fu 0.8•fy
existing anchor bolts are OK
* FOUNDATION FOR UPLIFT a • ~''°'~^^ a;,,,°~°`^"" ^ ~ :''^" ~•
...,.. Cl
P~:= 22.18•k + 17.64k Weight of the roof, shell, hemispher and ~ column legs
~~= Pempty
,
I~:= 1604.3•k•ft
P 2•M 1
_
~- ~N Ra N cos(A) PwEZa = -26.882•k max uplift to one footing
'Yconc ~= 150•pcf unit weight of concrete
-PWE2a
ureq
'yconc'0.6
Vieq = 298.692 ft3 volume of concrete required per footing
Column-SupportCheckR.xmcd Paget ~ 12/3/2010
Downtown Reservoir A.L.Packard
Yelm, Washington SEI# A06143.00
1
(Vre9/ 3 = 6.685 ft rough cubic dimesion required to satisfy uplift
Column-SupportCheckR.xmcd Paged ~ 12/3/2010
.~
Q.~
s
Y
~ ~
Footing Uplift Revision to May 2006
Evaluation Calculations
~ t
~ Downtown Reservoir
Yelm, Washington
A. L. Packard
SEI# A06143.00
COLUMN DESIGN FOR COLUMN SUPPORTED TANK XREVISED 12/02/10
The calculations in this mathcad revise the amount of uplift at each footing. The weight of (2) column legs has
been added to the total weight of the tank when used to determine uplift.
P =sum of vertical dead loads, kips. pempTy := 22.18•k
~;= 4 =number of columns.
8 := 3.18• deg =slope of columns
M =overturning moment of wind or seismic forces about support base, ft-lbs.
Ra := 43.6ft• 0.5 Radius of tank base.
COLUMN LOAD: Wind Controls
Case 1 -Tank Empty + Full Wind:
P := Pempty
M := 1604.3•k•ft
PwE1a == I N + R N) cos(9) PWEta = 42.4•k
a
PWE2a •-_ P 2•M 1 P~yE2a = -31.3•k (uplift)
CN Ra N cos(9)
Case 3 -Tank Emntv + No Lateral
1
P := Pem
nrh pty COS(e)
M := 0•k•ft
pF:= N PF=5.6•k
COLUMN CHECK
r :- 4.613• in min column radius of gyration, see enercalc printout
A := 12.095•in2 colunms cross sectional area, see enercalc printout
nrov
I~Cv:= 1.0
~= 35.5•ft max unbraced length
K~L
- = 92.348
r
Fa := 13.84•ksi allowable stress per ASD table C-36.
PWEIa
Aieq .
F
a
Column-SupportCheckR.xmcd Pagel 12/3/2010
3
Downtown Reservoir
` Yelm, Washington
ACeQ = 3.064•in2 > ~:= 12.095•in2 columns ok
LATERAL BRACING CHECK
~i = 0.994• in2 cross sectional are of 1.125" diameter lateral rods
fu := 58•ksi lateral rod ultimate
fy := 36•ksi
V3 := 0.5.16.4•k lateral load to bottom horiz member
83 := 51•deg bracing angle
V3
F3 • cos~03~ F3 = 13.03•k lateral force
Fallow ~= 0.5•fu•A Fallow = 28.826•k
:= 0.6•fyA Fallow = 21.47•k laterals ok
ANCHOR BOLTS:
Existing anchorage: (1) 2" A36 bolt per column base plate
AS := 2.3in2 =root area of existing bolt
~:= 58•ksi
~y:= 36•ksi
Pbolt ~_ -Pw&za Pbolt = 31.299•k Anchor bolt uplift force
Min. tensile area required:
Amin u ~= Pbolt Amin.u = 1.079• in2
0.5 • fu
existing anchor bolts are OK
* FOUNDATION FOR UPLIFT
~= 22.18•k + 17.64k
2
Amin.y := Pl1Oit Amin.y = 1.087•lR2
0.8•fy
Weight of the roof, shell, hemispher and (2) column legs
nPnn~= Pemph'
M := 1604.3•k•ft
P _ P 2•M 1
~'~'' N Ra•N cos(A)
PWE2a = -29.091 •k max uplift to one footing
7conc ~= 150•pcf
unit weight of concrete
-PWE2a
Vfeq :_
'Yconc' 0.6
V~eq = 323.23 ft3
volume of concrete required per footing
A. L. Packard
SEI# A06143.00
Column-SupportCheckR.xmcd Paget 12!3/2010
f
r Downtown Reservoir A.L.Packard
Yelm, Washington SEI# A06143.00
1
~VCeq~ 3 = 6.863 ft rough cubic dimesion required to satisfy uplift
Column-SupportCheckR.xmcd Page3 12/3/2010
f
v
Washlhgton Avenue SE
12-1'/,
I
rank babe
i ' ~~\
~.
I \ 'J \ /
E
n
'm
0
I
I Riser
~ ~\ \~O~
~`
.,, New cronaete cu7ar, typ.
~ i See Oetad e
~ Existing rnnaete plmth, fJp.
N i
TANK FOUNDATION PLAN
BAR LIST
S=Ba is included In E=Ba is fo be Epoxy Coated
Substructure Quantifies V-Bar dimensions wry between
F=Ba is to be Freld Welded dmensions shown on this Ime
r=Re a Siimip.
and tailoring Ime
a olM~v.~oNS (our ro our
2 0 °~ ~ $ Length o,
locotim ~ ~~ m~ a U W X Y Z 9r 82 3°
0 y ~ U~ a >< ,~ W
~aoC
~ h 2° ~ ' ~' ~ 2° Ft In. ft. In. ft. In. Ff. In. Ft. In. Deg Deg FC In.
1 HORIZ HOOP INTERIOR 5 6 61 V 3 5 0.0 3 6.D 3 6.0 0 0.0 0 0.0 11 9.0
4 0.5 3 O.D 3 0.0 D 0.0 0 0.0 9 10.0 66
2 HCitIZ EXTERIOR 5 6 61 1 8 1.0 5 0.5 5 D.5 0 0.0 0 0.0 17 11.0 112
3 VERT 5 3650 1 2 20 2 20 81
r
REINFORCEMENT BENDING DIAGRAMS
~Yr~Zr
gT i e6r
TYPB 50 11 I ''
F~
REINFORCING NOTES;
t. AA reinforcing bars an this sheet shall be AASHrO M-31 Dade 6Q
unless shown otherwise
n = ?'-0' Minimum spike
w
~~
~ o
.e
I o
S
h
W
0~~ n
J~"w ~
{5 cert.
0 f8" max. O.C.
~~,a LJ
~~r es
FOOTING RETROFIT PLAN A
rap of existing conaefe plmfh
Continuous meld flashing and sealant
by afhas
I r Top of new conaete
e Maximum excvwfkn depfh. Utdibes are
known to be kcated dose fo, a h
excarotion areas Locating and hondmg of
the existing ub7fties shall be the
responsrbdity of the ca+trecfor.
B' >•
02 /5 (exteriaJ
eeenly spaced ~
(t~w`dl
I $
BackAT with
existing spoils 1
.^
1 0
R
h
I
2 Ot /.5 (interkr)
equally spaced
.a-D <.i. D~ s ..DII~ D
0
I D I
,.
1' D 1
e D4 a D ~ r a D
D
\// - Da a D ~ ~ //
D
D
D D ~ > D
D p y
~~ ~.
~, ~,a a~. ~. D.D e a a / ~D.
D
~D D D
03 f5 ®18" max. O.C,
slope to match slope
of exist plinth
- 03 (5 vat. ®18'
max. DG around
perimeter
STRUCTURAL NOTES
fE~dLbh2ffS
these genad safes ore to be ussd as a ayN'emait fa Me spedfxvfiont and
spry k ~ sbvchsd txmpmsrk of the lnmdatim. My ~aepardn kind
onmg Me dawig; hie ,gredficatiar; Mae geecd notes and Me site
cardtiaua shah be rgxrted to the Regetaed Oeslgn Prokssa+a; woo shod
axrxt arch drsa7pancy b writkq. My yak dare by Me Cmbxta aRa
dscrorey d ardr deogsmny but prmr to axrectim of arch dsagxincg
shaft be dme at Me (xntracfab ride fie Canbocfa h resprnsbk Rr
ronfamhg to a4 OSHA and I16H,1 takty atadads fie Cmbacfa b
rrspmsble b dl bahg and shahg dxhg arnbvcfkn
02~
A4 me6rad; materids amt waimmshp shill cadam k Me ?0V9
Mtanatimd buddsng Cede (A7CJ as amended and adcpkd by Me lead
6uddng aMaity Ad re(arrae to aMa Cods and Sfmxladt (AQ ASaI, eteJ
dutl6e for the latest a mast amm,t edikn awdablG ertept as dnynated
by the gowrrrhg a>ae.
SfCACNE AID QE'JA,IS
Secfram nrd details •howhg rankwoh0k bdLt baniig mamber~ and
romectims me Mended to firs6vte spaei6a dekds No attempt hat been
made to show dl denenh possdy M+aug7 a spw7rc mfiar a detag.
Cansbvctim datads sat spee'tknVy.dwm as Me 6rorhgs shay tartar shlda
4efods of this projee$ ro ~prowd by Me Registered Dagn t}okssima:
fie Conbxta shah lerify and/a cnaM6wte m9 dinmuats and
caidffars thorn an the cmbact doamrarfs
!( Me edsthg wndtkm wsy from Me hfmmtan h Me anbocf
daaments the Canbxta shmP nobly Me Regtstsed Oesign Pmkssond
o/ the andrtiars prig to proceedhg wHh eak h Maf ales Nhde
pe6eming errk adpcmf k existhg aWcturaR safaguad a4 e+isthg
sWchue; saeixA and uNitier Mat maybe aHecfed by Me work of
Mis amtrect tt shop de Me respons+bdity o/ Me antracta to gaily the
dsnentkns of Me edttkq laotirge ad H drHromb Me aantrata shag
cmfoct Me Fiyeus pxv k /abrioaPog Me rtnlacmre~f.
fie 6uddhg 0I6cd shill make sbvatad hrspxtialt as reglired by the
kad,4risd'cfim. GansWctial hspecfMl shad be h occadnn ei6r Me
hwawirg pmksians o/ Me 10;19 16tt
Sectrcw 1044Inspectkns
Sectias foglnpecb'ons
- Rdnlachg ska' and plo~ement
(,E1LPAt
Ad cmoete sha0 meet Me rtquremenk o/ Ap-701, SgedNaotlms Fa
Sburoturd Coasts fa &rddngt.' Rgaabivrng al hgredrests Rr eacM
aanaete and YwA 6e by YeMod 1 a Me alhmate pmctdrre glrei h
Aa-7ot Nate aw,aete per Aa-J04 and ronlam k as-bad (ao6) la
cdd rsoMa p'acernenf and AO'-6A5 (JRSJ la hot wmrla ptacanmt
ass hferia marhmicd s>brvfat wiM 7,000 RPY minimum Irepumcy 00
not owr-xbrata Cmaete ~ be pMcsd mmadthicdly between
carsbvcfim a anbd Phk Notecf d amaek ban p~anotwe Jyfiq,
exawsdw hot a aYd femperolura fa serer Nys aRr p'acri¢
W]WACS
csmmb Asnt Ct50. rpe t
Coax wd /he aggregate ASDd C32
Nhta dyad be dear and pot~te.
rwmty-dyht day canpretsna tb®,gM s1aR ba:
S4mp: 4"! 1 hrh
Yaorwm A4fa/cwnmt rofh: 046
Rernfaang sled shay caafarn to AS1M A615 Erode 60, new 661st stack,
and seaurdy tied wfM /16 double aneded rJre Rekrlacrment shah be
detailed h oarnrdonce wiM Ap 715 Reinforcement shah be placed in
accadana wiM CRSr 'Peecommended Proctin Fa Pbdng Reinfadng
Bars
- Cmoek crow shill ba~ 7"
Fo11ow reccmmmded practke to concrete lamwak (A(1-3f7J,
., ... ~ ..... ... ... ... ... ..... . ...... .. .. . .. ...... ~ All th bdlf C
/~ sha~ng shall be a respona y of Me mfrocta Famwak
TYPICAL SECTION ~ suppak and shorhg shat be designed to proede /medre0 concrete
surfaces of df faces hrel, plumb, and true to tha dmmsions mrd
- ekwtlms sham. rdaances and wiatians shop be as spedfied
S~~~~ YELM DOWNTOWN RESERVOIR FOOTING RETROFIT DESIGNm BY:~gA~.L Pa kard ~~
~ CHECI(m BY: A.S. Ar eris
PRJ. DRAFTER K.S. Ketter ~
Sargent Engfneera, Ina. Yelm, Washington ~
320 Ronlee Lane NW • Olympia, WA 98502 s6>-t5
Tel. 360 867-9264 • Fax 360 667-9318 PLAN /DETAILS /NOTES ~' ~ N0'
ssuEO: A1om.a2
t
Original Calculations from
May 2006 Evaluation
{
L
5~1RGENT
Structural Evaluation of
the
50,000 Gallon Downtown
Elevated Water Tank
Yelm, WA
For: The City of Yelm Public
Works Department - Yelm, WA
Prepared by: Andrew L. Packard
May 2006
SEI Project No. A06143.00
~~
Sargent Engineers, Inc. 320 Ronlee Ln NW Olympia, WA 98502 • Tel 360 867.9284 Fax 360 867-9318
1
S~RGENT
Sargent Engineers,lnc.
320 Ronlee Lane NW
Olympia, Washington 98502.9241
Tel 360 867-9284
Fax 360 867-9318
www.sargentengineers.com
May 22, 2006
Mrs. Stephanie Ray
City of Yelm
105 Yelm Avenue West
P. O. Box 479
Yelm, WA 98597
RE: Downtown Elevated Reservoir
Project No.: A06143.00
Dear Mrs. Stephanie Ray
On May 4, 2006 I observed the condition of the exterior structural members of the
Downtown elevated reservoir. During the inspection I did not find any additional deterioration
than was noted during the 2005 inspection.
Scope of Work
To perform an inspection of the exterior of the reservoir to ensure no further deterioration
or damage had occurred since the prior structural inspection in 2005. To perform a structural
evaluation of the tank under "dry" conditions and determine what upgrades or repairs may be
necessary for the structure to remain safely in place.
Description of Structure
The Downtown tank was constructed by Pittsburg-Des Moines Steel Company. It is an
elevated steel welded structure with a maximum head of 124.5 feet, and is supported by four
built-up steel columns and individual concrete footings.
Results of Analysis
All of the reservoir's structural members are adequate to support itself and to resist
seismic and wind lateral forces under dry conditions with the following exception:
The dimensions of the column footings are unknown at this time. Uplift calculations
show that each footing requires a volume of 348 cubic feet of concrete. The footings are
almost certainly much larger than this as they where designed for the much larger uplift
loads under full conditions rather than dry conditions.
• 561RGENT
Recommendations
Mrs. Stephanie Ray
Page 2
May 22, 2006
• Because the footing dimensions are unknown it is necessary to determine if they are
indeed large enough to resist current design uplift forces. (A minimum of 348 cubic feet).
• Perform the cleaning, painting, and other maintenance items recommended in the
October 2005 Condition Evaluation Report.
If you have any questions or concerns about our findings or this letter, please do not hesitate to
call.
Sincerely,
Sargent Engineers, Inc.
"l
Andrew Packard,
Design Engineer
ALP
\1Sencr11Fi1cs106FiIcs1A0G143.00 Yclm Dwn Twn Tank Eval\L.cttcedoc
Down Town Reservoir
Yelm, WA
SELF-SUPPORTING CONE ROOF DESIGN
API 650, 10th Edition, Sec.3.10.5
Design Parameters
C :=60•ft
Hr.=8.0•ft
8 := 40 •deg
D :=19 •ft
t~:=0.25•in
t r := 0.1875 •in
LL :=25•psf
DL := t r•490•pcf
Sum := DL + LL
z
Ar:=~ 1D1 (Dl +Hr2
Angle of Cone
A.L. Packard
SEI #A06143.00
Measured tank shell circumfrence
Measured Roof Height
Approximate Angle of the Cone Element
to the Horizontal (Degrees)
Nominal Diameter of Tank Shell
Thickness of Tank Shell
Thickness of Roof Plate
Roof Live Load
DL = 7.656q~sf Roof Dead Load
Sum = 32.656 °psf Total Roof Load
A r = 370.669 ~ft2
Maximum Allowable Angle = 37 Degrees
Minimum Allowable Angle = 9.5 Degrees
Thickness of Roof Shell
Sum = 32.656 °psf < 45 psf, therefore no increase in thickness required.
Maximum Thickness = 0.5 in
Minimum Thickness = t min := D t min = 0.074°in
(400 •sin(8) • 12 )
0.074 in < 0.1875 in < 0.5 in Therefore, the Roof Shell Thickness is Okay.
Roof Weight
Wr:=Ar•tr•490pcf Wr=2.838~k
ConRoof.mcd
1
5/22/2006
Y
} Downtown Reservoir
Yelm, WA
Shell Thickness Check and Tank Weights
C := 60•ft =measured tank circumfrence, ft.
H :=18.0 •ft =measured height of tank shell, ft.
D :=19•ft =tank diameter, ft.
R :=0.5•D
h := 0 •ft =height of water above base of shell, ft.
t s :=0.25 •in =tank shell thickness, in.
t h := 0.25 •in =tank hemisphere thickness, in.
S d := 15000•psi =design stress, psi.
E :=0.45 =joint efficiency
CA := 0.0•in =corrosion allowance, in.
Shell Thickness Calculations:
t ;= 2.6•D•H• 12 pcf +- CA
d
S d•E
Hemisphers Dimensions:
Hh :=8.9•ft
4rcHh2
A h :_
2
hemisphere height, ft.
A h = 497.691 ftz
Tank Weights:
Wtroof :=2.84•k
Wt shell ~= 490 •pcf •t s •(C •H)
Wt hemisphere ~= 490 pcf •A h •t h
t d = 0.132Qin > .1 ;min shell thickness
t s = 0.25 min OKAY
surface area of the hemisphere
Wtringgrdr'=(490•pcf•0.375•in)•7ti•(Ri-R-}-22•in)•(R1-22•in- R) ...
+ 6.7 •plf •n •2 •R
W total '= Wt roof ~ Wt shell + Wt hemisphere ~" Wtringgrdr
Wtroof = 2.84~k
Wt shell = 11.025=k
A.L.Packard
SEI# A06143.00
Wt hemisphere = 5.081 ~k
Wt ringgrdr = 2.237~k
W total = 21.183 ~k
Shell Thickness and Weights.mcd Pagel 5/22/2006
a
1 Downtown Reservoir A.L.Packard
Yelm, WA. SEI# A06143.00
LATERAL DESIGN
ASCE 7-02, Sections 6 and 9
D :=19•ft =tank diameter, ft.
h s :=18.0 •ft =height of tank shell, ft.
R h := 8.9•ft =radius =height (HIi) of suspended hemisphere, ft.
h r := 8.0 ft =measured height of cone roof, ft.
t s := 0.25 •in =tank shell thickness, in.
Weights, Areas, & Centroids
Wt roof '- 2.84 •k =tank roof weight, kips
X roof ~=127.16 ft =height to C.G. of roof, ft.
A roof = 76 ft2 =surface area of roof for wind calculations
Wt shell ~=11.03 •k+ 2.24 •k+ 1 •k =tank shell weight, ring girder ,and 1 misc. kip
X shell ~=115.8•ft =height to C.G. of cylindrical tank shell, ft.
A shell '=D'h s
A shell = 342 ft2 =surface area of shell for wind calculations
Wt hem '- 5.08 k =tank bottom hemisphere weight, kips
c:=R 1- 4
h ~ 3 •~
X hem'-106.5•ft- (R h- c)
X hem = 102.723 ft =height to C.G. of suspended hemisphere, ft.
z
'4 hem:=~•Rh •0.5
~' hem = 124.423 ft2 =surface area of hemisphere for wind calculations
X cols ~= 53.25 •ft =height to C.G. of legs/columns, ft.
'cols ~= 3.1 •ft• 106 •ft
A cols = 318 ft2 =surface area of columns for wind calculations
Wt cols ~=17.64•k
W upper '= Wt roof t Wt shell i" Wt hem W upper = 22.19°k
W total '- W upper+ Wt cols W total = 39.83 °k
Laterall.mcd Pagel 5/22/2006
t Downtown Reservoir
Yelm, WA.
Wind Loadin¢: Per Section 6.5.13
Wind Speed -
Wind Importance Factor -
Exposure Category -
Velocity Pressure Exposure Coefficient
Wind Directionality Factor -
Topograp/zic Factor -
Gust Effect Factor -
Net Force Coefficient -
Velocity Pressure - (Per 6.5.10)
V ~, := 85 mph (Per Figure 6-1)
A. L. Packard
SEI# A06143.00
I :=1.00 (Per Table 6-1)
C (Per 6.5.6.3)
K z :=1.36 (Per Table 6-3, height = 133 feet)
K d := 0.95 (Per Table 6-4, Square Similar Structure)
K zt :=1.00 (Per 6.5.7.2)
G :=0.85 (Per 6.5.8)
C f :=1.0 (Per Figure 6-19, Round, h/d =7.4, D'/D = 0.1,
D*(qz) = 88
q z :=0.00256 •K z'K zt'K d •V Wz•I•psf
Design Wirut Force - (Per 6.5.13)
Wind design shear: F roof '- q z'C''C f'A roof
q z = 23.897 ~psf
F shell '= q z'G'C f'`~ shell
F hemisphere '= q z'G'C f'A hem
F cols '= q z'G'C f'p' cols
F roof = 1.544~k
F shell = 6.947~k
F hemisphere = 2.527 ~k
F cols = 6.459~k
V 1 '= F roof + F shell t- F hemisphere + F cols' 6 V 1= 12.094~k
1
V 2 '= F roof + F shell + F hemisphere + F cols' 2 V 2 = 14.248 ~k
5
V 3 '= F roof ~ F shell + F hemisphere + F cols' 6 V 3 = 16.401 ~k
M ~, := F roof'X roof + F shell'X shell + F hemisphere'X hem ~ F cols'X cols
Laterall.mcd Paget
Load to upper laterals
Load to mid laterals
Load to bottom laterals
M ~, = 1604.313 ~k •ft
~.%
5/22/2006
t
K
t Downtown Reservoir A.L.Packard
Yelm, WA. SEI# A06143.00
Seismic Loading: Per Section 9.14.5
Seismic Use Group - I; I e :=1.0 (Per IBC Table 1604.5)
Site Seismicity - S s :=1.14 (Per USGS Printout)
S 1 := 0.40 (Per USGS Printout)
Site Classification - Class D (assumed)
Site Coeff cients - F a :=1.1 (Per ASCE Table 9.4.1.2.4a)
F v :=1.6 (Per ASCE Table 9.4.1.2.4b)
Adjusted Max Spectral Response Accelerations - S MS '_ F a' S s S MS = 1.25 (ASCE 9.4.1.2.4-1)
S M1 :=F v' S 1 S M1 = 0•~ (ASCE 9.4.1.2.4-2)
Design Spectral Response Accelerations - S DS '- 3 'S MS S DS = 0.84 (ASCE 9.4.1.2.5-1)
S D1 '=?'S Ml S D1 = 0.43 (ASCE 9.4.1.2.5-2)
3
Seismic Design Category - D (per ASCE Table 9.4.2.1a & b)
Seismic Design Coefficients - (Per ASCE Table 9.5.2.2)
R:=3.0 SZo;=2.0
Calculate Seismic Response Coefficient
(Per ASCE 9.5.5)
S DS•I e
C sl := C sl = 0.279
R
C smin '= 0.14 •S DS'I e C smin = 0.1170
C ;= C sl C = 0.199 <= Use this
s 1.4 s
Empty Tank:
V :_ ~Wt + Wt + Wt + Wt 1 C sl
s roof shell hem cols ~ 1.4
V s = 7,928~k
M ;_ (Wt X + Wt X + Wt X + Wt X 1 C sl
s roof' roof shell' shell hem' hem cols' cols/ ~ 1.4
M s = 691.643 ~k•ft
Laterall.mcd Page3
0
5/22/2006
r
~ Downtown Reservoir
Yelm, Washington
COLUMN DESIGN FOR COLUNIN SUPPORTED TANK
P =sum of vertical dead loads, kips. P empty :=22.18•k
N := 4 =number of columns.
B := 3.18 •deg =slope of columns
M =overturning moment of wind or seismic forces about support base, ft-lbs.
R a := 43.6 ft•0.5 Radius of tank base.
COLUMN LOAD: Wind Controls
Case 1 -Tank Empty + Full Wind:
P '=P empty
M :=1604.3 •k•ft
P
P WEIa'=
+ 2 M 1
N R a.N cos(6 )
_ P
P WE2a ~ 2•M 1
.
N R a•N
cos(6 )
Case 3 -Tank Empt y + No Lateral:
P :=P
empty •
1
cos(A )
M :=0•k~ft
P ;= P
F N
COLUMN CHECK
r :=4.613•in
A ;=12.095•inZ
K ;=1.0
L : = 35.5 •ft
K•L = 92.348
r
F a :=13.84•ksi
P WEla
A Teq , F
a
A 1eq = 3.064~in2
Column-Supportl.mcd
PWEla=42.4~k
P WE2a =' 31.3 ~k (uplift)
P F = 5.6~k
min column radius of gyration, see enercalc printout
colunms cross sectional area, see enercalc printout
max unbraced length
allowable stress per ASD table C-36.
> A :=12.095 •in2 columns ok
Pagel
A. L. Packard
SEI# A06143.00
~J
5/22/2006
x
4
Downtown Reservoir A.L.Packard
Yelm, Washington SEI# A06143.00
LATERAL $RACING CHECK
A := 0.994•in2 cross sectional are of 1.125" diameter lateral rods
f u := 58 •ksi lateral rod ultimate
f y := 36 •ksi
V 3 := 0.5.16.4 •k lateral load to bottom horiz member
B 3 := 51 •deg bracing angle
V3
F 3 • cos(A 3} F 3 =13.03~k lateral force
Fallow ~= 0.5 •f u •A Fallow - 28.826 ~k
Fallow :=0.6•f y•A F ~lo~,~, = 21.47~k laterals ok
ANCHOR BOLTS:
Existing anchorage: (1) 2" A36 bolt per column base plate
A s := 2.3 inz =root area of existing bolt
fu :=58•ksi
f y := 36•ksi
P bolt '--P WEZa P bolt = 31.299 ~k Anchor bolt uplift force
Min. tensile area required:
`°' min.u ~= P bolt A min.u = 1.079~in2 A min.y ;= P bolt A min.y =1.087~in2
0.5•f u 0.8•f y
existing anchor bolts are OK .
FOUNDATION FOR UPLIFT foundation dimensions are unkown.
P WE2a =- 31.299~k max uplift to one footing
Y cone ~=150•pcf unit weight of concrete
V = - P WE2a
req '
Y conc'0.6
V req = 347.767 ft3 volume of concrete required per footing
t
~V req) s = 7.032 ft rough cubic dimesion required to satisfy uplift rte,
Column-Supportl.mcd Paget 5/22/2006
r
x
~~
Sargent Englnaan, Ine.
320 Ronlee is NYV
Olympia. WA 98502
Ta! 360 867-9284 Fax 360 867.931 B
~. _ .
u~~
~ ~ 1la~j. a ~
BY~ ~S A Date: o~r(~z~ol
Subj~~e~~ct: Cu ~ ~ vYti ~
each ~l n~ 15 riv~.-~s ~ o?,~" O.G..
_ 3 7 s ,.
~ ~ ~1SS (,erne. ~1 3 ~ S+e~e ~ l ~.- C/ Qj ~s~~
. I S~S" y' I V~ S ~ ~ 1'Gi.cl 2
r i
.~
~ ~EuJ P,M~,~ = yZ~IL ~t~I~q t Ol_~ ~v~npk~
~ c~c~.I ~+ Y~ 3ca~~` - S k ~ . .
~ V~,~ S = JI 5 ~. `j~ ' (p0 ~ ~o r, •,rf s ! r i v~. i
A6= (a~ll~(s~8'~ - ~5(v25 ~ rl
(~,,, _ rr I S ~a ZS : ,~ : 1 (~ . ~-~ ~S S~ = ! l~, S15 ~ ~ ~-. 1_ r~o ~
PG` _f / ~-~ ` ~ ~ / l 1 i.~ / ~ -~, ~~ ~'') ~ ' 071 ~ / r~ (1 a J n / l "/O/r / ~, 5 3 I ~. --
Sh~~~ .
~~ . F,5 (.'>> ~~,~.) . ~s =~`a s~~)(37 S„~ _ j cj(~~s'`~~ 5~8`;f ~,~..1, =~8.~5 ft
P c-~~A~~ - ~3 ~
- -. .
.- ---
-- ~
~ r ~~
tr
Sargent Engineers,lne.
320 Ronlee Lane Nlgf
Olympia, WA 98502
(360) 867284
Fax (360) 867~3t 8
Rev: 560005
user: KW-0601469, Ver5.8.0, 1-Dec-2003
(c)7983-2003 ENERCALC Engineering Sof
Description Column
Title : Yelm Tanks
Dsgnr: A.S. Argeris
Description
Job # A01129.00
Date: 12:07PM, 18 MAY 06
Scope:
Built-Up Section Properties
Page 1
General Information
Type... X cg Y cg
#1 Rectangular Height 0.2820 in Width 12.0000 in 6.0000 in 2.8000 in
#2 Rectangular Height 0.2820 in Width 12.0000 in 6.0000 in 11.2000 in
#3 Rectangular Height 2.6580 in Width 0.5010 in 0.2510 in 1.3300 in
#4 Rectangular Height 2.6580 in Width 0.5010 in 0.2510 in 12.6700 in
#5 Rectangular Height 2.6580 in Width 0.5010 in 11.7500 in 1.3300 in
#6 Rectangular Height 2.6580 in Width 0.5010 in 11.7500 in 12.6700 in
Total Area 12.0946 in2 Ixx 293.814 in4 r xx 4.9288 in
lyy 257.409 in4 r yy 4.6133 in
X cg Dist. 6.0002 in Edge Distances from CG...
Y cg Dist. 7.0000 in +X 6.0003 in S left 42.8999 in3
-X -6.0002 in S right 42.8994 in3
+Y 6.9990 in Stop 41.9794 in3
-Y -6.9990 in S bottom 41.9794 in3
Ems.
• Project: Subject:
Sargent Engineers, Inc.
320 Ronlee Ln NW
Olympia, WA 98502
Tel 360 867-9284 Fax 360 867-9318 By: Date:
~~
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Company Solutions Products Servlees Technology Customers', News Your language: English ~ ' GO
;002 Lat/Lon Lookup Output!
~. '~
LOCATION 46
The interpolated Probabilis
at the requested point are:
10~PE in 50 yr
PGA 28.80
0.2 sec SA 63.48
1.0 sec SA 21.63
- - - - - - - - - - - - - -
SEISMIC HAZARD: Hazard by LaUi.on, 2002
~f 1
http://egint. cr. usgs. gov/eq-men/c gi-bin/find-11-2002-interp-06. c gi
.942 Lat. -122.607 Long.
tic ground motion values, in fig,
2~PE in 50 yr
51.36
114.08
39.94
- - - - - - - - - - - - - - - -
~%
5/17/2006 9:20