HomeMy WebLinkAboutENG RPT 3-19-09 RETAINING WALL.TIFMar 19 09 10:57a Recil Wright 828 465 5878 p.2
WAIGAT
ASSOCIATES
4190 Hwy. 16 South • Newton, NC 28658 • (828)465-r.205 • Fax (328)465 -5878
March 19, 2009
Gary Dellinger
8151 Webb Road
Denver, NC 28037
Re: 7129 Long Island Road
Mr. Dellinger,
Attached, please find a cross section of the retaining wall design foryou r residence located at the above
address. Also attached are the calculations for the retraining wall.
Should you need anything further, please do not hesitate to contact me.
Thank you,
l a .If
/JV_
Miles A. Wright, PE
SEAL
' 2434
A
CIVIL ENGINEERS do SURVEYORS
Mar 19 09 10 57a Recil VVr'ght
828 465 5878 p.3
r aa' • — WaG�
4190 HPfWY 16 SOM
NEwrok MO 78668
(828) 465 -7205 OFFICE
(828) 465 -5678 F/7
1111 1 1II 1.
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RETAINING WALL DESIGN
:ELLNVGER RESIDENCE
CONCRETE TD BE
M"W/MUM OF 3,000 PS!
REBA.R 70 BE
A MMUM OF 50,000 PSI
Mar 19 09 10:57a Recil Wright
t-
Wright PRCJECT DdIngerResidence
$t Assoc. JOB Gary Dell
JOB NO. ;
etaining Wall Design Based on AM 318 -05
INPUT DATA & DESIGN SUMMARY
DATE' 3119 :2078
CCNCRET - -STREN3TH
1,
3
ksi
Where h= 10.7 It H=
REBAR YIE_D STRESS
.1 =
50
ksi
kits
LATERAL SOIL PRESSURE P. 11l
30
pct (equivalent fluid pressure)
6ACKFILL SPECIFIC WEIGHT
. =
130
pc/
2.81
SATURATED SPECIFIC WEIGHT
y
116
pCf
V0 = hf (LH • it r LT) ?x =
WATER TAELE DEPTH
h =
30
It
kips
PASSIVE PRESSURE
Pp
300
psflft
0.65
SURCHAR31EWEIGHT
w.
94
p
f+lo 1.6 H1 2.73 kips
FRICTION COEFFICIENT
N
0.4
0.78
3A0
ALLOW SCIL PRESSURE
as
4
ksf
-
THICKNESS OF TOP STEM
It
12
in
THICKNESS OF KEYS STEM
m
12
in
TOE WIDT-i
Lr
2.5
ft
HEELWIDTH
LH =
2.5
A
HEIGHT OF TOP STEM
HT
4.33
ft
HEIGHT CF BOT. STEM
He
4,33
ft
FOOTING THICKNESS
IY
24
in
KEY DE=TH
hk
0
in
SOIL OVER TOE
hp
12
in
TCP STEM VERT. REINF. (A.
t
5
g
12 in C.C.
A. LOCATION Pal lface t =al
coddle, 2 =at
each ace)
1 al middle
TOP STEM HOR2. REINF. (ACI 14.1.2)
0
5
@ 10 in o.c., at micdle
SOT. STEM VERT. REINF, (A.
5
12 inc.e.
A LOCATION (0 =at sailface, 1 =a1 midd'ie, 2•al
each face)
1 at micdle
BOT. STEM HORL? REINF. (ACI 14 1.2)
A
5
C 10 in O.C., at micdle:
TOP RE NF.OF FOOTING (A.
Y
5
@
12 in a -a
SOT REINED= FOOTING (l
;k
5
ra
17 in n
ANALYSIS
SERVICE LOADS
H c = 0.5 Pa h - In Pa i 0.5 [Pa (xaz - yw) f+ *Iw] Fill
=
1.7D
kits
Where h= 10.7 It H=
0
fl
Is = wsPa(HT +He n4 11E -
023
kits
Hp = 0.5 Pip (hp +hf +hx)p
1.35
kits
Ws = wa (LH + m - h)
024
kips
Ws = We/ s Wn2
2.81
kips
Where Y1b1 = 2,81 kips , Wes =
0.00
kips
V0 = hf (LH • it r LT) ?x =
1.80
kips
Wk = hk 15 yc -
0.00
kips
Wr It Il ye
0.65
Nips
Wr.o = m HE ?e
0.65
kips
FAC70REDLOADS
W-.t ..5E
378
f+lo 1.6 H1 2.73 kips
195
2.33
yHs 1.6 Hs = 0.37 kips
0.78
3A0
Y$,4
828 465 5878 p.4
PAGE
❑ESIGN BY MAW
REVIEW BY: RHW
I 1
x
TL ',11l Toale
�OkS.1 a'
t
t
* ;a L
AC£OUATE.
now - E f
yL15 = 1.BNs
- 7.39 kips
OVERTURNING MOMENT
RE=TINC MOMENT
.i4tib 12 WI+
3.36 kips
H y
y HY
rHy
yLVr = 12 Wr
2.'5 kips
FM 1.70 2.73
3.55 6.06
9.60
y4Vk 1 2 VJk
0.00 kips
Hs 0.23
5.33 1.23
1 .97
yWw,t = 12 Ww t
0.78 kips
F., 1.94 3A 0�
� -� - -_- 7.29
11.66 --
yW«.o - 1.21N.,e
0.78 kips
RE=TINC MOMENT
-- -..i..
.W.
7W
x
wx
'tW x-
W.1 0.24
0.38
4.75
1.12
.
1.79
Ws: 2.81
3.38
4.75
13.37
16.04
V-0 1.80
2.16
1DO
5.40
6.43
Wk 0.70
0.07
3.00
0.00
C 01
W-.t ..5E
378
300
195
2.33
, Nw,D 0.85
0.78
3A0
1.95
2.34
E E.1.
__
7.47
-
20.7e
28.99
M, = 1.35 R- kipsl4
OVERTURNING FACTOR OF SAFETY (1606.1)
�w_ IJ-Ji- 3 d5 > 1.5
[Satisfactoryj
Mar 19 09 10:57a Recil Wright 828 465 5878
p.5
HECK SOIL BEARING CAPACITY (ACI 318-05 SEC. 2.2)
(oorrd)
L F-135 — FXy —M,,r.
L ° Lr +te = 8� ft 2 = -- = 0154
2 zr
EYVj 1 +
l L ' , for e 5 L
BL 6 = 1.50 ksf a O s (Satisractory]
2v W L
for e > —
)B(0.5L —e) 6
HECK FLEXURE CAPACITY, AS,1 6 AS,2, FOR STEM (ACI 318 -05 SECA 5.4.2, IC-2,10.6.4.7.12.2 - 2.2, 812.5)
h = 8.66 ft H= 0 ft
A = ws P: l+b = 22 plf
8 = h Pa = 280 ptl
C = [Pa (T,01 - Tw) f h 4 TV) Ff ptf
Al base of top stem 'a'•�
Mu 0.97 ft-kips _
y= = 0. &3 lops _ �-- -j
Pu = 0. kips
At base Of boyam stem
Mu = 8,50 ft -ups
V, = 2.10 kips a g
P„ = 1.55 kips
At top stem
Al base of boftom stem
�sfY —P = ��
011' = = 0
.4sf
d I
= 6. TO ft-kiss,
6.71 ft -kips
1.7bf, J�
' ir
, we
[Satisfactory]
[Satisfactory]
where tl
= 8,00 in ,
B jr
h
= 12 in,
12 in
4+
= 0.9 (ACI 318 =g R9.3.2)
0.9 (ACI 318 Fig R9.3.2)
As
= 0,31 W,
0.31 in'
p
= 0.004
0. 85 fe ey
7 .y eu *Sr
0.019
0.0 19
> p
Isatisractory[
> p
— 0 -001$
pm, —
= 0.004
[Satisfactory]
0.004
d
< p
< p
[Satisfacloryl
[satisfactory]
CHECK SHEAR CAPACITY FOR STEM (ACI 318 -05 SEC. 15,5.2. 11 1.3.1, 8 11.3)
r—
Atop stem
Al base of bottom stem
P Yaum4 =20EJd�f
° 3.92 kips.
592 kips
> VW
> V,
[Sa tisfa c tory)
[Satisfactory)
where p = 035 (AC 018-05, Section 9.32.3 )
CHECK HEEL FLEXURE CAPACITY, AS,3, FOR FOOTING
(AC. 318-06 SEC.15.4.2, 1D.2, 10.3.5,
- 0.6,4, 7.12.2, 12 2, $ 125)
_ 0.6573,f eN
PLUA
0.0018 h
f.y t:u +E(
7.019 p,T/i4 2 d — 0.001
Z NYw,'pwe+ L
\ \\
G e.SL
bf 3 =
l
z
q
6 = 3.91 ft
2«
Yw,�YwnT Yw.
6S , for e.> 6
Mar 19 09 10:58a Reoil Wright 828 465 5878 p,6
r — (Contd)
0.85J 1 - I _ ,
0.3 M „ 83bd'f�
p = = 0 000
where d = 222.19 in 2.09 ksf x
e, = 058 ft q rm = C.40 ksf
5 = nla q,,. = 1.04 ksf o. >
IAs:) = 0.26 in < As.j (Satisfactory)
TOE FLEXURE CAPACITY, AS,4, FOR FOOTNG CAC I 31 E-05 SEC, 16 4.2. - 3.2, 10.3.5, 10.5.4, 7,12 2, 12.2, 8 125;
0.85P, Eu _
0.019 p r4 0.0218 1�r 1 1
P.wcr-- i eu +6r er, = MINI \ —P>
(4.. + L
Mf = 6 — L Yx f = 464 ft -iics
where d = 20.69 in
qa� = 1.34 ksf
0.$5 f t-
` 0383b
p = f ,
( A v.4) ...I. = O.C3 in f ft < A a , 18atisfactoryl
CHECK SLID ING CAPAGITY (IBC 1 806.1)
1.5(Hb -Hs) = 2.9 kips < HP'µM = 3.E7 Idps
[Satilsfactary)
Technical References:
1. Plan VAliams:'Sbuctural Engineering Reference Manual'. Professional Publications, Inc, 2001.
2. Alan Milams:'Structural Engineering License Review Proolems and Sotutons', Cidcrd Univesity Press, 2003.
I
Mar 19 09 10:57a Recil Wright
4190 Hwy 16 South
Newton, NC 28658
Phone: (828) 465 -2205
Fax: (828) 465 -5878
e -mail: milesawright@charter.net
LM
828 465 5878 p.1
T« Richard Holden From: Miles A. Wright. PE
Fax (828) 465 -8375 Pages: 11
Phone: Data 3/19/2009
Re: Bunkerhill High School CC: Gary Dellinger (Fax:704 -483 -8481)
❑ Urgent 0 For Review ❑ Please Comment ❑ Please Reply ❑ Please Recycle
e Comments:
Richard,
Attached is letter, Calculations and drawing for the retaining wall at Gary Dellingers house. If you need
any additional information, please let me know.
Mlles