C Seismic Loading GENERAL NOTES:

Bar "B" 20% lateral earth All dimensions are in centimeters unless otherwise

No. 3 RSB Sp. @ 30cm Pressure 10% wt. of specified.

retaining wall. Minimum concrete protective covering bars reinforcement

Alloowable stresses and surfaces of vertical wall will be 4 centimeters and 7.5

Bar "A" increased by 33.33% centimeters for the footing.

All exposed edges of the concrete shall be rounded or

Filter Drain chamfered.Hb Lapping of bars shall be 24D for deformed bars and 48D

2"Ø Weepholes Ha for plain bars.H Heel of retaining wall will be omitted if the walls are

placed toe to toe and symmetrical about a vertical axis.

All concrete shall be 3,000 psi.

B/2 DESIGN CRITERIA:

B Designed for 1 foot level surchage, for greater surcharge

special designed shall be required.HL Assumed angle of internal friction of soil, Ø = 33°-40°

R For Heights 2.50 m. & Below Weight of earth backfill = 100 pcfD Bar "C" u = 1.7*Sqrt(fc)/D

F Bar "B" WORKING STRESSES:

Bar "A" fs = 18,000 psi fc = 1,350 psi

B/2 for bar "A" fc' = 3,000 psi v = 60 psiA n = 9.2

E B Hc HbHa (For top Bars) - u = 3.4*Sqrt(fc)/D

Provide Shear Key when Retaining Wall is independent

STANDARD L - SHAPED RETAINING WALL B/2 Prepared by Design Section, UPRP,NIA

FOR DRY BACKFILL B For Heights 3.00 m. & Above

DIMENSIONS BAR "A" BAR "B" BAR "C" Th HL

H A B C D E F R SIZE Ha SPA. Hb SPA. Hc SPA. SIZE SPA. SIZE SPA.150 13 100 13 13 13 13 6 # 3 75 24 145 24 - - - - - - 309 0.36200 15 120 15 15 15 15 7 # 4 100 24 195 24 - - - - - - 448 0.53250 18 150 15 18 18 15 8 # 4 125 20 245 20 - - - - - - 530 0.75300 21 180 15 21 21 16 10 # 4 80 14 150 28 295 28 # 3 30 # 3 26 595 1350 25 210 15 25 25 20 13 # 5 100 18 175 36 345 36 # 3 30 # 3 18 743 1.34400 28 235 15 28 28 23 15 # 5 115 14 200 28 395 28 # 3 28 # 3 14 770 1.67450 32 245 15 32 32 27 16 # 6 130 16 225 32 445 32 # 3 23 # 4 16 1015 2.04500 37 260 15 37 37 32 18 # 6 145 15 250 30 495 30 # 3 18 # 4 15 1170 2.53550 43 280 15 43 43 38 20 # 7 160 17 275 34 549 34 # 3 15 # 4 15 1232 3.16600 50 300 15 50 50 45 25 # 8 180 21 300 42 595 42 # 4 24 # 4 15 1465 3.95

Maximum Pressure at

Toe PSF (Normal)

Volume of Conc. Per M

(cu.m.)

650 55 350 15 55 55 50 30 # 8 200 19 325 38 645 38 # 4 24 # 4 15 1650 -