Midas Practice Problems

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Prob. No.

Length (m)

Section Shape

Size (m)

Load (kN/m)

Support

1

5

Angle

ISA

5.5

Fixed

2

10

I

ISMB

5

Cantilever

3

15

T

ISNT

4.5

Simply Supported

4

20

Channel

ISMC

4

Propped Cantilever

5

25

Pipe

1 x 0.05

3.5

Fixed

6

30

Square

1x1

3

Simply Supported

7

35

Circle

1.2

2.5

Propped Cantilever

8

40

Rectangle

1.5 x 0.5

2

Fixed

9

45

T

2 x 2 x 0.5 x 0.3

1.5

Simply Supported

10

50

Channel

ISMC

1

Propped Cantilever

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b

b

b

P

b

P

c P/2

w

w c

a

c

a Fig No. 2

Fig No. 1

Length (m) c

Section Shape

Fig No.

Support Type

P (kN)

w (kN/m)

Settlement (mm)

5

3.5

Square

1

Spring

10

5.5

10

2.5

3

Circle

2

Fix

12

5

12

4.5 2.5

5

Rectangle

1

Fix

17

4.5

15

Prob. No.

a

b

1

3

2

4

3

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4

5

3

4.5

T

2

Spring

15

4

20

5

5

4

3.5

Channel

1

Spring

20

3.5

18

6

6

3

5.5

Angle

2

Fix

13

3

10

7

5.5

4

3.5

I

1

Fix

14

2.5

12

8

2.5

5

3

T

2

Spring

8

2

15

9

3.5

3

4

Channel

1

Spring

11

1.5

20

10

4

3

3.5

Pipe

2

Fix

19

1

18 5

Midas Civil midas Civil

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S1

b

S2

PLAN

H

S3

a w

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• • • •

a

S4 w

a

b

w is UDL acting on edge column Thickness of Plate = 200mm Where not modelling plate, add slab load as floor load Assume sections & required data

ELEVATION

b

w

Length (m)

Support w Pressure Type (kN/m) (kN/m2)

Prob. No.

a

b

H

Model Plate

1

3

5

3.5

S1, S4

Spring

3

5.5

2

4

2.5

3

S1, S2

Fix

2.5

5

3

4.5

2.5

5

S3, S2

Fix

4

4.5

4

5

3

4.5

S3, S4

Spring

5

4

5

5

4

3.5

S2, S4

Spring

4.5

3.5

6

6

3

5.5

S3, S1

Fix

3.5

3

7

5.5

4

3.5

S1, S2, S3

Fix

3

2.5

8

2.5

5

3

S1, S3, S4

Spring

4

2

9

3.5

3

4

S2, S3, S4

Spring

2.5

1.5

10

4

3

3.5

S1, S2, S4

Fix

5.5

1 7

Midas Civil midas Civil

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Are all options provided below stable? If not, which option(s) is/are unstable? Sky blue line are truss, red lines are compression only members and yellow lines are tension only members

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(a)

(b)

(c)

(d) 9

Midas Civil midas Civil

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Model all the trusses in available time

Problem 1

Problem 3

Problem 2

Problem 4

• Assume sections & other required data MIDAS Information Technology Co., Ltd.

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Midas Civil midas Civil

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Model a Bow String Girder Bridge as per below dimension & design Use same material, section, load, etc. as in Tutorial. Scale the loads as necessary.

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Prob. No.

Length (m)

Height (m)

Width (m)

1

30

6

10

2

33

6.5

10.5

3

36

7

11

4

39

7.5

12

5

42

8

12.5

6

45

8.5

13

7

48

9

13.5

8

51

9.5

14

9

54

10

16

10

57

10.5

18 12

13

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Model a PSC Box Girder Bridge as per below dimension & design Use same material, section, load, etc. as in Tutorial. Scale the loads & sections as necessary. Support section length at each end = Span length/20 Taper section length at each end = Span length/10 Depth of girder = Span length/15 to Span length/20 Model construction stages as referenced in tutorial

Prob. Span Width Bearings No. (m) (m)

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No. of Tendons

1

30

10

2

6

2

33

10.5

2

6

3

36

11

2

6

4

39

12

3

8

5

42

12.5

3

8

6

45

13

3

8

7

48

13.5

3

8

8

51

14

3

10

9

54

16

4

10

10

57

18

4

10 14

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