Strip Footing Design by linzhengnd

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									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

								
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