Strip Footing Design
Document Sample


bar # Diameter X-sec Area Unit Wt
3 0.375 0.11 0.376
4 0.500 0.20 0.668
5 0.625 0.31 1.043
6 0.750 0.44 1.502
7 0.875 0.60 2.044
8 1.000 0.79 2.670
9 1.128 1.00 3.400
10 1.270 1.27 4.303
11 1.410 1.56 5.313
14 1.693 2.25 7.650
18 2.257 4.00 13.600
1. Material Properties 5. Reinforcement
f'c 4 ksi Bar 6
fy 60 ksi s 10 in
g soil 100 lbs/ft
3
d 6.625 in
qa 4 ksf OK
g conc 150 pcf
2
As furn 0.5280 in
2. Loads b1 0.85
wd 3.13 k/ft rb 0.028507
wl 3.63 k/ft r min r r max
0.003333 0.003507 0.021380
3. Geometry Note: Check r min < r < r max
wt 12 in If NG change bar size
Df 4 ft OK OK
h 10 in
cc 3 in 6. Flexural Strength
CL 0.5 ft
qe 3.56 ksf Mu 0.66 ft-k
min_width 1.90 ft a 0.7765 in
bw 2 ft
fMN 14.8186
4. Shear Strength Note: check fMn>Mu OK
qu 5.2765 ksf
Vu -0.27 k 7. Development Length
f Vc 8.55 k db 0.75
Note: If fVc > Vu OK if not increase h c 3.375
OK l 1 ACI 12.2.4
b 1 ACI 12.2.4
a 1 ACI 12.2.4
g 0.8 ACI 12.2.4
As_req'd Ktr 0 ACI 12.2.4
a__ 44.11765 c+ktr/db 2.5
b__ -397.5 ld/db 22.77 diameters
c__ 8.794167 ld/db_reduced 0.956
Ld Req 0.72 inches
As_1 8.987822 in^2 Ld Max Available 3.00 inches
As_2 0.022178 in^2 Note: check Ld max > Ld Req
Ok
Get documents about "