7/26/2019 FUNDACIONES POSTES
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Tr?-?arr. rr c?
r?r.:c r:res
IC ???
Coccri e
.Poo i?c
~cs ?. I)p:.?Cs
FOOTING
CLASSIFICP-TION Y LOADS
AND
SOIL PRESSURES
Fig Par 2 .4
.
P L A N P L AN
P L A N
(Withovt pod
I
(Wi th pod)
TYPE
X T Y P E Y - l T Y P E Y - 2
Far use mlth rld e
bore
t o w m or For use w itb narrow borb so nt i l r r a poles
r ig id f m m column9 xllh
If-
- d l h r l q i d f ro m a c olu mn s w i t h o
kicnt s p r e a d i n d i v l d d
s inp le mmol l th ic loot ing.
f d i n g undtr aoUl leg.
~eo bvar turn inp moment-.- .
-..--Heavy u p l i f t
or
compression
C&porollvely ligh t dear---..,
. wi th
CLEYATION NORMAL
T
PLA
T Y P E X - Y C O M B I N A T I O N
,
or use with rl gl d froms of ona r o w of co l umns ico ntl lov
sr In Other plane) with
recton)ulw boss norrow in vlo ns o f r l g l d f r o m o n0 w
llh w oo mte m l l t h -
lc foollnps for win of legs in tho p l m of r ig id f rame
ii
a__
--._._
"..Htevy downward ver tico l load
Concen t r i c~ l l y
r
ccctnlric011y
opolled
. .
?
..
...
~..
.- - - - -SO~I pr.;ssures
P L A N E L E V A T I O N
rn iou tss ro t t s rnucruRca - ' co ~ cn r r r
m w t
T Y P E
Z jl
F O O T I N G C L A S S I F I C A T I O N
For use with hmvy . m r c o l aqu ipmrn t rovntod
4-Y
LOADS ANDSOIL PRLISURC~
di rcc t ly
on
Ue famdotion. r r v
..t58
o.M.R.- 3 . r
"Lv.
c-a-sl
105-0-75
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-?n-,.,l r.-*
~ c . . , . , . ~ ~ ~
- - . .--a . . .
Chzp 22 Concrs:a Foo?L?o
E ~
end Details
FORMULAS LATERAL
SUPPORTOF EARTH
Flq
3
Tar. 2 . 5 3
,
G
4
..f ..
C O N C R E T E F O O T I N G
D E F O R M A T IO N
=
t
NOMENCLATURE
lad
in
pounds
opdlcotlon of load P abcva
qmund
PRESSURE eu
V E
( P ara bo~ r e )
BASIC ASSUMPTION
The passive rcsistcnce 01 lhc earth varies d i m l l y ~
1
with
the
depth, p r
unlt
of deformallon.
,
dl
FORMULAE
(1) 5 .
+:p
12) b
.
(31
a s
A - b H
(41
5 s
151
9
ff d
161
*
%
7) M
P(c.01
P
Ad
,
I.uadd
9 .
Rrlotlre dslleclions
.
d
.
%roiec!ed diometer
or
width of looling n leer.
1:
1
;
'
I
IO
,I.VC I W L S - -. TI 041 03
' FORMULAS-LATERAL SUPPORT Of E A R T H
Reference' Desipn
of M o r w y
Struc?wcs
aru . t -8 - le
b v
Clement C Wi1liom.C.E.
.
D3-0-77..v.-:.?
@.v.*:;J.
.. A
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