Assignmet 1
Running Head: FOUNDATION DESIGN 1
FOUNDATION DESIGN 2
Title
Student Name
Institution
Date
Structure foundation design
Considering the structure footprints provided
Soil profile for end bearing with basement
Type one foundation for the soil profile and soil properties
Point of interest height
B= 80’
2B= 160’
POI =
|
case |
type |
Foundation depth |
Basement depth |
POI in layers |
POI in layers |
POI in layers |
POI in layers |
|
1-1 |
mat |
20’ |
20’ |
|
= |
|
|
|
1-2 |
mat |
42’ |
42’ |
= |
|
|
|
|
1-3 |
End bearing piles |
45’ |
0’ |
= |
= |
|
|
|
1-4 |
End bearing piles |
110’ |
0’ |
|
|
|
|
|
1-5 |
End bearing piles |
45’ |
20’ |
= |
= |
|
|
|
1-6 |
End bearing piles |
45’ |
30’ |
|
= |
|
|
|
1-7 |
End bearing piles |
110’ |
40’ |
|
|
|
|
Type two foundations for the soil profile and soil properties
9 columns
36 columns
|
case |
Number of columns |
Pile cap width |
Basement depth |
Pile depth |
POI IN LAYER |
POI IN LAYER |
|
2-1 |
9 |
20’ |
0 |
30’ |
= |
= |
|
2-2 |
36 |
11’ |
0 |
30’ |
= |
|
|
2-3 |
9 |
20’ |
0 |
45’ |
= |
|
|
2-4 |
36 |
11’ |
0 |
45’ |
= |
|
|
2-5 |
9 |
20’ |
0 |
110’ |
= |
|
|
2-6 |
36 |
11’ |
0 |
110’ |
= |
|
|
2-7 |
9 |
20’ |
20’ |
30’ |
= |
= |
|
2-8 |
36 |
11’ |
20’ |
30’ |
= |
|
|
2-9 |
9 |
20’ |
20’ |
45’ |
= |
|
|
2-10 |
36 |
11’ |
20’ |
45’ |
= |
|
|
2-11 |
9 |
20’ |
20’ |
110’ |
= |
|
|
2-12 |
36 |
11’ |
20’ |
110’ |
= |
|
SETTLEMENT CALCULATION TABLE
FOUNDATION 1
POI=82’
|
DEPTH |
|
|
|
OCR |
ծP |
|
82’ |
8(106)+22(89)+8(122)+7(106)=4516 |
=62.4X82=5116 |
600 |
1.08 |
=1.08X600=648 |
USING BASE EQUATION
|
LOCATION |
|
|
|
|
|
CENTRE |
1000 |
1600 |
|
12 |
|
EDGE |
800 |
1400 |
=0.14
|
10.5 |
|
CORNER |
600 |
1200 |
=0.11
|
8.4 |
EDGE
centre
CORNER
Settlement sufficiency table
|
CENTRE TO EDGE |
CENTRE TO CORNER |
EDGE TO CORNER |
||||||
|
|
L |
|
|
L |
|
|
L |
|
|
12-10.5=2.5 |
40 |
|
12-8.4=3.6 |
56.57 |
|
10.5-8.4=2.1 |
40 |
|
|
PASS/FAIL |
|
FAIL |
|
|
FAIL |
|
|
FAIL |
FOUNDATION 2 CASE 9 columns
|
foundation |
P |
A sf |
ծ |
Z |
B |
|
PRESSURE BALB FACTOR |
|
|
Pile centre |
1200000lb |
6400 |
187.5 |
24 |
20 |
1.2 |
0.25 |
46.9 |
|
Pile edge |
600000lb |
6400 |
93.8 |
24 |
20 |
1.2 |
0.2 |
18.76 |
|
Pile corner |
300000lb |
6400 |
46.9 |
12 |
20 |
0.6 |
0.15 |
7 |
|
Basement centre |
1200000LB |
6400 |
178.5 |
24 |
20 |
1.2 |
0.25 |
46.9 |
|
Basement edge |
600000LB |
6400 |
93.8 |
24 |
20 |
1.2 |
0.2 |
18.76 |
|
Basement corner |
300000LB |
6400 |
46.9 |
12 |
20 |
0.6 |
0.15 |
7 |
|
DEPTH |
|
|
|
OCR |
ծP |
|
69.5 |
4516 |
=4336.8 |
179.2 |
1.08 |
193.5 |
|
LOCATION |
|
|
|
|
|
CENTRE |
1200 |
1379 |
=0.27
|
24.7 |
|
EDGE |
1000 |
1179 |
|
24 |
|
CORNER |
800 |
979 |
=0.189
|
15 |
Settlement sufficiency table
|
CENTRE TO EDGE |
CENTRE TO CORNER |
EDGE TO CORNER |
||||||
|
|
L |
|
|
L |
|
|
L |
|
|
24.7-24=0.7 |
10 |
|
24.7-15=9.7 |
14.14 |
|
24-15=9 |
10 |
|
|
PASS/FAIL |
|
FAIL |
|
|
FAIL |
|
|
FAIL |
Foundation 2 -36 columns
|
foundation |
P |
A sf |
ծ |
Z |
B |
|
PRESSURE BALB FACTOR |
|
|
Pile centre |
1200000lb |
6400 |
187.5 |
24 |
11 |
2.2 |
0.15 |
28 |
|
Pile edge |
600000lb |
6400 |
93.8 |
24 |
11 |
2.2 |
0.1 |
9.38 |
|
Pile corner |
300000lb |
6400 |
46.9 |
12 |
11 |
0.6 |
0.2 |
9.38 |
|
Basement centre |
1200000LB |
6400 |
187.5 |
24 |
11 |
2.2 |
0.15 |
28 |
|
Basement edge |
600000LB |
6400 |
93.8 |
24 |
11 |
2.2 |
0.1 |
9.38 |
|
Basement corner |
300000LB |
6400 |
46.9 |
12 |
11 |
0.6 |
0.2 |
9.38 |
|
DEPTH |
|
|
|
OCR |
ծP |
|
60.5 |
4516 |
3775.2 |
740.8 |
1.08 |
800 |
|
LOCATION |
|
|
|
|
|
CENTRE |
1200 |
1940 |
|
2 |
|
EDGE |
1000 |
1740 |
=0.1406
|
1.8 |
|
CORNER |
800 |
1540 |
|
1.43 |
Settlement sufficiency table
|
CENTRE TO EDGE |
CENTRE TO CORNER |
EDGE TO CORNER |
||||||
|
|
L |
|
|
L |
|
|
L |
|
|
2-1.8=0.2 |
5.5 |
|
2-1.43=0.57 |
7.8 |
|
1.8-1.43=0.37 |
5.5 |
|
|
PASS/FAIL |
|
FAIL |
|
|
FAIL |
|
|
FAIL |
|
Minimum basement depth that works |
Pile depth |
|
|
mat |
8’ |
54’ |
|
End bearing piles with basement |
45’ |
46’ |
|
Type 2 foundation |
Minimum basement depth that work |
Pile depth |
|
9 columns |
8’ |
41’ |
|
36 columns |
6’ |
39’ |