Retaining Wall Rcc62 (1)

Project

Spreadsheets to BS 8110etc

Client

Advisory Group Grid line 1

Location

REINFORCED CONCRETE COUNCIL Made by

Date

rc

RETAINING WALL design to BS 8110:1997, BS 8002:1994. BS 8004:19Checked Originated from 'RCC62.xls' on CD

101

Revision

chg

© 1999 BCA for RCC

Page

27-May-2013

Job No

R68

-

IDEALISED STRUCTURE and FORCE DIAGRAMS

DESIGN STATUS:

VALID

L in e L o a d L G K , L Q K in k N / m

WARNING : Passive pressure should only be considered if it can be guaranteed that there will be no future excavation in front of the wall.

X S u r c h a r g e S G K , S Q K in k N / m

2

TW H

W A TE R

L P

H n

H P

T b

L W

L E

H W

L S

L L

B 1

B N

TN B

DIMENSIONS (mm) H= 3200 B= 2750 Hw = 100 BI = 1000 Hp = 200 BN = 0 Hn = 0 MATERIAL PROPERTIES N/mm² m = fcu = 35 N/mm² m = fy = 460 cover to tension steel = Max allowable design surface crack width (W) = Concrete density = SOIL PROPERTIES Design angle of int'l friction of retained mat'l (Ø) = Design cohesion of retained mat'l (C ) = Density of retained mat'l (q ) = Submerged Density of retained mat'l (qs ) = Design angle of int'l friction of base mat'l (Øb) = Design cohesion of base material (Cb ) = Density of base material (qb ) = Allowable gross ground bearing pressure (GBP) = LOADINGS

Surcharge load -- live (SQK) = Surcharge load -- dead (SGK) = Line load -- live (LQK) = Line load -- dead (LGK) = Distance of line load from wall (X) =

LATERAL FORCES (unfactored)

PE = PS(GK) = PS(QK) = PL(GK) = PL(QK) = PW = Total PP =

Ka = Kp = Kpc = Kac =

Tw = Tb = TN =

250 400 0

1.5 1.05 50 0.3 24

concrete steel mm mm kN/m³

30 0 20 13.33 20 10 10 200

degree kN/m² kN/m³ kN/m³ degree kN/m² kN/m³ kN/m²

10 10 15 20 1000

kN/m²

0.33 2.04 2.86 1.15

[ default ka = (1-SIN Ø)/(1+SIN Ø0.33 [ default kp = (1+SIN Øb)/(1-SIN 2.04 [ default kpc = 2kp0.5 ] = 2.86 [ 2ka0.5 ]

Wall Geometry

kN/m kN/m mm

(Only granular backfil considered, "C" = zero) [default=2/3*q (only apply when H13.33 ASSUMPTIONS

a) Wall friction is zero b) Minimum active earth pressure = 0.25qH c) Granular backfill d)Does not include check of rotational slide/slop e)Does not include effect of seepage of ground water beneath the wall. f)Does not include deflection check of wall due t lateral earth pressures h) Design not intended for walls over 3.0 m high

Force

Lever arm

Moment about TOE

f

Fult

Mult

(kN) 34.12 10.67 10.67 6.67 5.00

(m) LE = 1.067 LS = 1.60 LS = 1.60 LL = 2.36 LL = 2.36

(kNm) 36.41 17.07 17.07 15.74 11.80

1.40 1.40 1.60 1.40 1.60

(kN) 47.77 14.93 17.07 9.33 8.00

(kNm) 50.97 23.89 27.31 22.03 18.89

0.00

1.40

0.05

LW = 0.03

67.17

-6.12

98.09

(LP-HN) = 0.10

-0.60

1.00

0.07

0.00

97.17

143.10

-6.12

-0.60