This software allows engineers to model 3D combined footings in order to check stability, bearing pressures, bending moments, and reinforcement requirements. It extracts load combinations and reactions from Microstran models. The interface facilitates input of footing and pedestal dimensions, load combinations, and results checking. Outputs include passive resistance forces and moments, soil stress distributions, safety factors for overturning and sliding, and bending moment diagrams.

1. mario.galvez@ingenieros.com http://www.linkedin.com/in/mariogalvez

2. 3D Combined Footing Design
• From Microstran Model, this software can extract
nodes reactions for all load combinations.
• It performs the following tasks:
– Stability check: soil stress, overturning, sliding.
– 3D Bearing pressures, modelling the soil as a
group of springs.
– Bending moments and shears along the pad (both
directions).
– Reinforcement.
– Printable Calculation Report.
mario.galvez@ingenieros.com http://www.linkedin.com/in/mariogalvez

3. 3D Combined Footing Design
• Friendly interface.
M ACRO COMBINED FOOTINGS MS-MODEL V2.11
Released on 08-February-2013
1. MI CROS TRAN FILE
Path S : ...
Fi le Name *. arc
2. FOOTI NG AND PEDES TALS DIMENSI ONS
2.1. P edestals
Bp l (m ) 0.30 Pedestal lengt h
L p l (m ) 0.30 Pedestal widt h
h p l (m ) 0.60 Pedestal height
o o
P edestal N Node N B pl (m) L pl (m) h pl (m) X (m) Y (m)
1 1 0.30 0.30 0.60 0.15 0. 00
2 2 0.30 0.30 0.60 -2. 25 0. 00
3 5 0.30 0.30 0.60 -2. 25 -2. 10
4 7 0.30 0.30 0.60 0.15 -2. 10 Import
5
6
7
8
0.30 0.30
10.0 -2. 25 -2. 10
0.15 0. 00
-1. 05 -1. 05
1 2
1 1. 1 0.9 1.1
8.0 1.2
2 -1.4 0.9 -1.4 1.2
5 -1.4 -1.2 -1.4 -0.9
7 1. 1 -1.2 1.1 -0.9
0 0. 0 0.0 6.0
0.0 0.0
0 0. 0 0.0 0.0 0.0
0 0. 0 0.0 0.0 0.0
0 0. 0 0.0 0.0 0.0
Footing -1.7 -1.5 4.0
-1.7 1.5
3 4 X (m) Y (m)
1. 4 0.9 1.4 1.2 1.20 1. 05
2.0
-1.1 0.9 -1.1 1.2 -1. 20 1. 05
-1.1 -1.2 -1.1 -0.9 -1. 20 -1. 05
1. 4 -1.2 1.4 -0.9 1.20 -1. 05
0. 0 0.0 0.0
0.0 0.0 1.05 1. 05
-10.0 -8.0 0. 0 .0
-6 0.0
-4.0 -2.0 0.0 0.0 0.0
2 .0 4.0 1.05 6.0 1. 05
8.0 10.0
0. 0 0.0 0.0 0.0 1.05 1. 05
0. 0 0.0 0.0 0.0 1.05 1. 05
1. 7 -1.5 1.7
-2.0 1.5 0.00 0. 00
-4.0
-6.0
-8.0
-10.0
mario.galvez@ingenieros.com http://www.linkedin.com/in/mariogalvez

4. 3D Combined Footing Design
• Friendly interface.
3. CHECK RESULTS
Check Foundation
XZ Plane YZ Plane
Hp as (kN) 19.96 21.95 Passive Resis tance
Mpas (kN-m) 2.66 2.93 Passive Resis tance Moment
La / 6 (m) 0.55 0.50
FACTORS OF SAFETY ("Ok" when FS>5)
Overtuning Sliding
Load Comb Load Comb Name ex (m) ey (m) qmin (kPa) qmax (kPa) % comp Soil Stress
XZ Plane YZ Plane XZ Plane YZ Plane
201 1.4DL 0.00 0.00 27.5 27.6 100.0% Ok Ok Ok Ok Ok
202 1.2DL+1.6LL 0.00 0.00 54.2 54.4 100.0% Ok Ok Ok Ok Ok
211 1.2DL+0.6FLL+1.2(ELL+PLL)+WLu+x 0.11 0.00 37.7 55.6 100.0% Ok Ok Ok Ok Ok
212 1.2DL+0.6FLL+1.2(ELL+PLL)+WLu-x 0.11 0.00 37.7 55.6 100.0% Ok Ok Ok Ok Ok
213 1.2DL+0.6FLL+1.2(ELL+PLL)+WLu+y 0.00 0.02 45.2 48.0 100.0% Ok Ok Ok Ok Ok
214 1.2DL+0.6FLL+1.2(ELL+PLL)+WLu-y 0.00 0.02 45.2 48.0 100.0% Ok Ok Ok Ok Ok
221 1.2DL+0.6FLL+TSL+WLu+x 0.23 0.00 14.0 33.6 100.0% Ok Ok Ok Ok Ok
222 1.2DL+0.6FLL+TSL+WLu-x 0.23 0.00 14.0 33.6 100.0% Ok Ok Ok Ok Ok
223 1.2DL+0.6FLL+TSL+WLu+y 0.00 0.03 22.4 25.2 100.0% Ok Ok Ok Ok Ok
224 1.2DL+0.6FLL+TSL+WLu-y 0.00 0.03 22.4 25.2 100.0% Ok Ok Ok Ok Ok
231 0.9DL+WLu+x 0.30 0.00 8.6 27.2 100.0% Ok Ok Ok Ok Ok
232 0.9DL+WLu-x 0.30 0.00 8.6 27.2 100.0% Ok Ok Ok Ok Ok
233 0.9DL+WLu+y 0.00 0.03 16.8 19.0 100.0% Ok Ok Ok Ok Ok
234 0.9DL+WLu-y 0.00 0.03 16.8 19.0 100.0% Ok Ok Ok Ok Ok
251 1.2DL+0.6FLL+1.2(ELL+PLL)+EQu+x+0.3EQu+y 0.15 0.31 7.0 86.2 100.0% 3.48 Ok Ok Ok Ok
252 1.2DL+0.6FLL+1.2(ELL+PLL)+EQu+x+0.3EQu-y 0.15 0.31 7.0 86.2 100.0% 3.48 Ok Ok Ok Ok
253 1.2DL+0.6FLL+1.2(ELL+PLL)+EQu-x+0.3EQu+y 0.15 0.31 7.0 86.2 100.0% 3.48 Ok Ok Ok Ok
254 1.2DL+0.6FLL+1.2(ELL+PLL)+EQu-x+0.3EQu-y 0.15 0.31 7.0 86.2 100.0% 3.48 Ok Ok Ok Ok
255 1.2DL+0.6FLL+1.2(ELL+PLL)+0.3EQu+x +EQu+y 0.04 1.03 0.0 196.8 47.6% 1.52 Ok 2.32 Ok Ok
256 1.2DL+0.6FLL+1.2(ELL+PLL)+0.3EQu-x +EQu+y 0.04 1.03 0.0 196.8 47.6% 1.52 Ok 2.32 Ok Ok
257 1.2DL+0.6FLL+1.2(ELL+PLL)+0.3EQu+x +EQu-y 0.04 1.03 0.0 196.8 47.6% 1.52 Ok 2.32 Ok Ok
258 1.2DL+0.6FLL+1.2(ELL+PLL)+0.3EQu-x +EQu-y 0.04 1.03 0.0 196.8 47.6% 1.52 Ok 2.32 Ok Ok
431 0.9DL+WLu+x+1.0BT3 0.30 0.00 8.6 27.2 100.0% Ok Ok Ok Ok Ok
432 0.9DL+WLu-x+1.0BT3 0.30 0.00 8.6 27.2 100.0% Ok Ok Ok Ok Ok
433 0.9DL+WLu+y+1.0BT3 0.00 0.03 16.8 19.0 100.0% Ok Ok Ok Ok Ok
434 0.9DL+WLu-y+1.0BT3 0.00 0.03 16.8 19.0 100.0% Ok Ok Ok Ok Ok
451 1.2DL+0.6FLL+1.2(ELL+PLL)+1.6BT1+EQu+x +0.3EQu+y
0.15 0.31 7.0 86.2 100.0% 3.48 Ok Ok Ok Ok
452 1.2DL+0.6FLL+1.2(ELL+PLL)+1.6BT1+EQu+x +0.3EQu-y.15
0 0.31 7.0 86.2 100.0% 3.48 Ok Ok Ok Ok
453 1.2DL+0.6FLL+1.2(ELL+PLL)+1.6BT1+EQu-x+0.3EQu+y.15
0 0.31 7.0 86.2 100.0% 3.48 Ok Ok Ok Ok
454 1.2DL+0.6FLL+1.2(ELL+PLL)+1.6BT1+EQu-x+0.3EQu-y0.15 0.31 7.0 86.2 100.0% 3.48 Ok Ok Ok Ok
455 1.2DL+0.6FLL+1.2(ELL+PLL)+1.6BT1+0.3EQu+x+EQu+y0.04 1.03 0.0 196.8 47.6% 1.52 Ok 2.32 Ok Ok
456 1.2DL+0.6FLL+1.2(ELL+PLL)+1.6BT1+0.3EQu-x+EQu+y.04
0 1.03 0.0 196.8 47.6% 1.52 Ok 2.32 Ok Ok
457 1.2DL+0.6FLL+1.2(ELL+PLL)+1.6BT1+0.3EQu+x+EQu-y.04
0 1.03 0.0 196.8 47.6% 1.52 Ok 2.32 Ok Ok
458 1.2DL+0.6FLL+1.2(ELL+PLL)+1.6BT1+0.3EQu-x+EQu-y0.04 1.03 0.0 196.8 47.6% 1.52 Ok 2.32 Ok Ok
mario.galvez@ingenieros.com http://www.linkedin.com/in/mariogalvez

5. 3D Combined Footing Design
• 3D Bearing Pressures (Envelope).
qma x (kPa ) 196.8
mario.galvez@ingenieros.com http://www.linkedin.com/in/mariogalvez

6. 3D Combined Footing Design
• Bending Moments
35
30
25
M* (kNm/m)
20
15 XZ Plane
10
5
0
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5
-5
-10
30
20
M* (kNm/m)
10
0
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5
-10 YZ Plane
-20
-30
-40
mario.galvez@ingenieros.com http://www.linkedin.com/in/mariogalvez

7. 3D Combined Footing Design
• Shears
60
40
V* (kN/m)
20
XZ Plane
0
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5
-20
-40
-60
100
50
V* (kN/m)
0
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5
YZ Plane
-50
-100
mario.galvez@ingenieros.com http://www.linkedin.com/in/mariogalvez

8. 3D Combined Footing Design
• Reinforcement
mario.galvez@ingenieros.com http://www.linkedin.com/in/mariogalvez