3.2.3 Isolated Footing ACI

8/19/2019 3.2.3 Isolated Footing ACI

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APPENDIX A Detailed Calculation Sheet 1

Isolated Foundation Calculation (ACI)Issue: Design of F-5 Page

Date: 8-Fe-!"1 of #

Project: $%o-Sto&e' each esidence %ith oof DecRevised by: ENA

Checked by: ENA

Input DataLoads (kN)

F* F'

Dead 0 2!"#! $%"%%

+i,e 0 !0!"&' 2%"2&

ind

E 0 2"$& 2&"!

Su. ! /10!2 1/228

oundation Leve*

3 (..) !00 h (..) !0

h% (..) 0 +4 !"!!

Pedesta* Di+ension

* (..) !0 ' (..) %00

Concrete ,tren-th

f6c (N4..2) 7 20"#

,tee* ,tren-th

f' (N4..2) 7 22#"%

.**o/ab*e ,oi* Pressure

a (N4.2) 7 !20

ase ,oi* an-*e o1 interna* 1riction 20

*ti+ate Loads (.CI $"2")+oad Case !9D:1# 1/D:1"+ !"5(1/D:1"+:1") !"5(1/D:1"+:18"E)

Facto&s 0"$ !"& !"% !"# !"0 !"2# !"2# !"0 !"2# !"%02

Fu* (N) 7 ! ! ! !

Fu' (N) 7 2205#9 52/"/ #9#555 /8181/#25

;u< (N.) 7 8/990 1"#/!" 1#!!5525 10#1082"5

.ppro3i+ate ase Di+ensions 4 L ased on n1actored Loads (.CI !"!").ppro3i+ate ase Di+ensions (..) 7 =>A+?E@ + (..) 7 =>A+?E@

ser Input Di+ensions (..) 7 !'00 + (..) 7 2200

.ppro3i+ate ootin- 511ective Depth d .ssu+in- Punchin- ,hear 6overns (.CI !!"!2)

+oad Case 1 2 # /

u.a* (N4.2) 115"/ 2519/ 18895 2#/!5

d (..) =>A+?E@ =>A+?E@ =>A+?E@ =>A+?E@

7 d (..)7 2# .in 15!.. (ACI 15")

D (..)7 &0 .in co,e& "!.. (ACI "")

oundation 8ei-ht D1 (kN)Conc&ete Sla 7 + D 25 #/05

Pedestal 7 * ' (3:h - D) 25 195

Soil ao,e Sla 7 (+ - *') (3 - h%) 2! 89"

Satu&ated Soil 7 (+ - *') (h% - D) (2!-1!) !

$otal Df (N) 7 120#

Net *ti+ate ,tresses Pro1i*e (kN9+2)+oad Case 1 2 # /

u.a* (N4.2) =>A+?E@ =>A+?E@ =>A+?E@ =>A+?E@

u.in (N4.2) =>A+?E@ =>A+?E@ =>A+?E@ =>A+?E@

1 (N4.2) =>A+?E@ =>A+?E@ =>A+?E@ =>A+?E@

2 (N4.2) =>A+?E@ =>A+?E@ =>A+?E@ =>A+?E@

# (N4.2) =>A+?E@ =>A+?E@ =>A+?E@ =>A+?E@

/ (N4.2) =>A+?E@ =>A+?E@ =>A+?E@ =>A+?E@

5 (N4.2) =>A+?E@ =>A+?E@ =>A+?E@ =>A+?E@

0 (N4.2) =>A+?E@ =>A+?E@ =>A+?E@ =>A+?E@

;<(N.)

ser InputDepthqumax=

Fuy

LB +6

Muz+ Fux×( H +h )

L2B

u.a*

u.in

d d

d42d42

12#/50

+

3

h

'

*

*

<

;<F'F*

h%

B$



APPENDIX A Detailed Calculation Sheet 2

Isolated Foundation Calculation (ACI #18;-95)Issue: Design of F-5 Page

Date: Fe !82!!"2 of #


Checked by: ENA

C5C;IN6:

Contact Pressurev (kN) < F' : Df 5/2#2 =+a3 (kN9+2) 2&%"$&' =+in (kN9+2) &'"$0

( #.a* : .in ) 4/

1859// N4.2 > =a < !20 N?

,tabi*ity .-ainst ?verturnin-,e&tu&ning .o.ent 7 ;< : F* (3 : h) 1/228 N.

Staili<ing .o.ent 7 F, (+42) 590552 N.

%"!$2' > !" @5,

,tabi*ity .-ainst ,*idin-

N R > !" Check not re=uired

Check /ide bea+ shear in the 3Adirection (.CI !!"&")>c (N) 7 (140) S$(fc) d #"5#52

Load Case ! 2 & %

>u (N) 7 =>A+?E@ =>A+?E@ =>A+?E@ =>A+?E@

>u 4 !85>c =>A+?E@ =>A+?E@ =>A+?E@ =>A+?E@

>u 7 !5 (1:u.a*) (+42 - *42 - d)

+a3 Bu 9 0"'Bc < !"00

Check punchin- shear (.CI !!"!2)o (..) 7 2 (*:d):(':d)G 22!!

>c (N) 7 .in of

(14#) s&t(f6c) o d 91"528

>c (N) 7 91"528( 1 : 24(*4') ) (140) S$(f6c) o d 29!551

((/! d4o) : 2) (1412) S$(f6c) o d 10!50"

Load Case ! 2 & %

>u (N) 7 =>A+?E@ =>A+?E@ =>A+?E@ =>A+?E@

>u 4 !85>c =>A+?E@ =>A+?E@ =>A+?E@ =>A+?E@

>u (N) 7 Fu' - (!5 (2:5)) (*:d) (':d)

+a3 Bu 9 0"'Bc < !"00

Rein1orce+ent:

3 A Direction A Direction

otto. einfo&ce.ent $oH einfo&ce.ent otto. einfo&ce.ent

+oad Case 1 2 # / 1 2 # / 1 2 # /

;u (N.) === === === === === === === === === === === ===

.s (c+2)< === === === === === === === === === === === ===

=== === === === === === === === === === === ===

B.L5E B.L5E B.L5E

0"0#$# (.CI !0"&"2)

* - di&ection .o.ents

;u (otto. ) 7 # !5(+42-*42)J2 : !5(u.a*-#) (24#)(+42-*42)J2

;u ($oH ) 7 u.in !5 (+42-*42)J2 (aHH&o*i.ation)

< - di&ection .o.ent

;u (otto. ) 7 !5(u.a*:u.in) + !5(42-'42)J2

BP

(g&oss H&essu&e) (N4.2) 7

=6P

<

<

+a3 <

+in < 0"00!' (.CI #"!2") +a3 < 0"# (0"' 1Fc 9 1y) (00 9 00G1y) <

Stabilizing moment

Overturning moment=

Fv×tanθ

F h

=

Mu=0 .9

f y A s( d−

0.59 f y

As

f ' c B )

qmax,min

= F v

LB±

M z+ F x( H +h )

BL2



APPENDIX A Detailed Calculation Sheet #



APPENDIX A Detailed Calculation Sheet /

Isolated Foundation Calculation (ACI)Issue: Design of F-5 Page

Date: Fe 8 2!!"# of #


Checked by: ENA

/10!2 N

! N 1/228 N.

15!

B$

3 7 === (in oth di&ections)

15!! !

#5! 2"5 ..

+ 7 22!! ..

As (c.2) 7 === (< - di&ection) As (c.2) 7 === (* - di&ection)

<

7 18!!

/!!

*

15!

Di.ensions a&e in ..

d 7

As (c.2) 7

h% 7

' 7

* 7

D 7

h% 7

F' 7

F* 7 ;< 7



Isolated Foundation Calculation (ACI)Issue Design of F-5 Page

Date 8-;a'-!11 of 2

Project: $%o-Sto&e' each esidence %ith oof Dece,ised ' ENA

Checed ' ENA

Input Data

Loads (kN) Concrete ,tren-th oundation Properties

P* P' f6c (N4..2) 7 20"# 3 (..) !00 h (..) !0

Dead 0 2!"#! $%"%% ,tee* ,tren-th h% (..) 0 +4 !"!!

+i,e 0 !0!"&' 2%"2& f' (N4..2) 7 22#"% Pedesta* Di+ensionind 0 0 0 .**o/ab*e ,oi* Pressure * (..) !0 ' (..) %00

E 0 2"$& 2&"! a (N4.2) 7 !20

Su. ! /10!2 1/228 ase ,oi* an-*e o1 interna* 1riction 20

*ti+ate Loads (.CI $"2")+oad Case !9D:1# 1/D:1"+ !"5(1/D:1"+:1") !"5(1/D:1"+:18"E)

Facto&s 0"$ !"& !"% !"# !"0 !"2# !"2# !"0 !"2# !"%02

Pu* (N) 7 ! ! ! !

Pu' (N) 7 2205#9 52/"/ #9#555 /8181/#25

;u< (N.) 7 8/990 1"#/!" 1#!!5525 10#1082"5

C5C;IN6:

Contact Pressure .a* 7 2#/9/ N4.2 .in 7 #8901 N4.2

( #.a* : .in ) 4/

1859/ N4.2 > =a < !20 N?

,tabi*ity a-ainst ,e&tu&ning .o.ent 1/228 N.

?verturnin- Staili<ing .o.ent 590552 N.

%"!$2' > !" @5,

,tabi*ity a-ainst

,*idin- N R > !" Check not re=uired

>c (N) .a* >u (N) +oad Case

#"5#52 =>A+?E@ =>A+?E@

+a3 Bu 9 0"'Bc < !"00

>c (N) .a* >u (N) +oad Case

91"528 =>A+?E@ =>A+?E@

+a3 Bu 9 0"'Bc < !"00

Resu*ts:

ase Di+ensions

7 !'00 .. d 7 2# ..

+ 7 2200 .. D 7 &0 ..

Rein1orc+ent

* - Di&ection < - Di&ection

otto. einfo&ce.ent $oH einfo&ce.ent otto. einfo&ce.ent

As (c.2) 7 B.L5E B.L5E B.L5E

B.L5E B.L5E B.L5E

;<(N.)

BP

(g&oss H&essu&e) (N4.2) 7

BP

7

Check 8ide ea+,hear

Check Punchin-,hear

<

Stabilizing moment

Overturning moment=

Fv×tanθ

F h

=



Isolated Foundation Calculation (ACI)Issue Design of F-5 Page

Date ;a' !82!!12 of 2

Project: $%o-Sto&e' each esidence %ith oof Dece,ised ' ENA

Checed ' ENA

/10!2 N

! N 1/228 N.

15!

B$

3 7 === (in oth di&ections)

15!! !

#5! 2"5 ..

+ 7 22!! ..

As (c.2) 7 === (< - di&ection) As (c.2) 7 === (* - di&ection)

<

7 18!!

/!!

*

15!

Di.ensions a&e in ..

d 7

As (c.2) 7

h% 7

' 7

* 7

D 7

h% 7

F' 7

F* 7 ;< 7

3.2.3 Isolated Footing ACI

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