Rodzaj Gruntu	Stopień zagęszczenia (Jd)	Stopień plastyczności (Jl)	K ąt tarcia wewnętrznego gruntu (φ)	Spójność gruntu (c)	Ciężar objętościowy gruntu (Ɣ)
Ił (I)	0	0,6	5,0	31	17,5
Piasek drobny (Pd)	0,45	0	30,2	0	17,5
Piasek gliniasty(Pg) nad poziomem wody	0	0,4	11,5	10	21
Piasek gliniasty (Pg)pod poziomem wody	0	0,4	11,5	10	11
Piasek pylasty pod poziomem wody (Pπ)	0,7	0	31,5	0	8,5

2. Naprężenia pierwotne

ϭzp1 = 22kN/m2

ϭzp2 = ϭzp1 + 0,78m * ƔI = 22+ 0.78x17,5=22+13,65=35,65kN /m2

ϭzp3 = ϭzp2 + 2,01m * ƔPd = 35,65+2,01x17,5 = 35,65+35.175=70,825kN/m2

ϭzp4 = ϭzp3 + 1,95m * ƔPg = 70,825+1,41x21 = 70,825+29,61=100,435kN/m2

ϭzp5 = ϭzp4 + 0,54m * ƔPg = 100,435+0,54x11 = 100,435+5,94=106,375kN

ϭzp6 = ϭzp5 + 1,2m * ƔPπ =106,375+1,2x8,5 =106,375+10,2=116,575 kN/m2

ϭzp7 = 0

ϭzp8 = 1,0m * ƔPr = 1,00x 17,5 = 17,5kN/m2

ϭzp9 = ϭzp8 + 1,41m * ƔPg = 17,5+1,41x21 = =47,11kN/m2

ϭzp10 = ϭzp9 + 1,52m * ƔPg = 47,11+0,54x11 = =53,05kN/m2

ϭzp11 = ϭzp10 + 2,0m * ƔPπ = 53,05+1,2x8,5= 53,05+10,2kN/m2

3. Parcie czynne

e _a= ϭzp x K_a-2c$\sqrt{\text{Ka}}$

Ka=tg²(45-ϕ/2)

Ka^I= tg²(45-5/2)= tg²(42,5)=0,83

Ka^Pd= tg²(45-30,2/2)= tg²(29,9)=0,33

Ka^Pg= tg²(45-11,5/2)= tg²(39,25)=0,66

Ka^Pπ= tg²(45-31,5/2)= tg²(29,25)=0,31

e _a= ϭzp x K_a-2c$\sqrt{\text{Ka}}$

e _aI¹₌ ϭzp¹ x K_a^I-2c$\sqrt{\text{Ka}}$=22x0,8396-2x31x $\sqrt{0,8396}$=-38,33

e _aI²₌ ϭzp² x K_a^I-2c$\sqrt{\text{Ka}}$=35,65x0,8396-2x31x $\sqrt{0,8396}$=-29,88

e _aPd²₌ ϭzp² x K_a^Pd-2c$\sqrt{\text{Ka}}$=35,65x0,33-2x0x$\sqrt{0,33}$=11,76

e _aPd³₌ ϭzp³ x K_a^Pd-2c$\sqrt{\text{Ka}}$=70,825x0,33-2x0x$\sqrt{0,33}$=23,37

e _aPg³₌ ϭzp³ x K_a^Pg-2c$\sqrt{\text{Ka}}$=70,825x0,67-2x10x$\sqrt{0,67}$=30,90

e _aPg⁴₌ ϭzp⁴ x K_a^Pg-2c$\sqrt{\text{Ka}}$=100,435x0,67-2x10x$\sqrt{0,67}$=50,65

e _aPg⁴₌ ϭzp⁴ x K_a^Pg-2c$\sqrt{\text{Ka}}$=100,435x0,67-2x10x$\sqrt{0,67}$=50,65

e _aPg⁵₌ ϭzp⁵ x K_a^Pg-2c$\sqrt{\text{Ka}}$=106,375x0,67-2x10x$\sqrt{0,67}$=54,62

e _aPπ⁵₌ ϭzp⁵ x K_a^Pπ-2c$\sqrt{\text{Ka}}$=106,375x0,31-2x0x$\sqrt{0,31}$=33,66

e _aPπ⁶₌ ϭzp⁶ x K_a^Pπ-2c$\sqrt{\text{Ka}}$=116,575x0,31-2x10x$\sqrt{0,31}$=36,895

Parcie bierne

e _p= ϭzp x K_p+2c$\sqrt{\text{Kp}}$

Kp=tg²(45+ϕ/2)

Kp^I=tg²(45+5/2)=1,19

Kp^Pd=tg²(45+30,2/2)=3,02

Kp^Pg=tg²(45+11,5/2)=1,49

Kp^Pπ=tg²(45+31,5/2)=3,18

e _pPd⁷₌ ϭzp⁷ x K_p^Pd+2c$\sqrt{\text{Kp}}$=0x3,02+2x0x $\sqrt{3,02}$=0

e _pPd⁸₌ ϭzp⁸ x K_p^Pd+2c$\sqrt{\text{Kp}}$=17,5x3,02+2x0x $\sqrt{3,02}$=52,85

e _pPd⁸₌ ϭzp⁸ x K_p^Pg+2c$\sqrt{\text{Kp}}$=17,5x1,49+2x10x $\sqrt{1,49}$=50,48

e _pPd⁹₌ ϭzp⁹ x K_p^Pg+2c$\sqrt{\text{Kp}}$=47,11x1,49+2x10x $\sqrt{1,49}$=94,607

e _pPd⁹₌ ϭzp⁹ x K_p^Pg+2c$\sqrt{\text{Kp}}$=47,11x1,49+2x10x $\sqrt{1,49}$=94,607

e _pPd¹⁰₌ ϭzp¹⁰ x K_p^Pg+2c$\sqrt{\text{Kp}}$=53,05x1,49+2x10x $\sqrt{1,49}$=103,45

e _pPπ¹⁰₌ ϭzp¹⁰ x K_p^Pπ+2c$\sqrt{\text{Kp}}$=53,05x3,18+2x0x $\sqrt{3,18}$=168,69

e _pPπ¹¹₌ ϭzp¹¹ x K_p^Pπ+2c$\sqrt{\text{Kp}}$=63,25x3,18+2x0x $\sqrt{3,18}$=201,135

H_D=P1+P2=11,76+1,50=13,26

Mekst=90,6 kN/m

Mmax = Mekst* H_D=90,6*13,26=1201,35 kNm=120135 kNcm

W_min=$\frac{Mmax*Ma}{R} = \frac{120135*1,1}{21,5} = 6146,47\ $_cm³

Przyjęto rodzaj grodzicy:

Grodzice Larssen 430 Wx=6450cm³

Szerokość 708mm