maxwell diagram

7/16/2019 Maxwell Diagram

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Applied StructuresCMT 3350

Session 4: Trusses



Material for Today

Analysis by Maxwell Diagrams



Analysis of Trusses

By Maxwell Diagrams



Analysis by Maxwell Diagram

15K

30K

30K

30K

15K

12 ft 8 ft 8ft 12 ft

9 ft

9 ft

4ft4ft



Free Body Diagram

R Ay

R Ax

R By

15K

30K

30K

30K

15K

12 ft 8 ft 8ft 12 ft

9 ft

9 ft

4ft4ft

0x AxF R= =∑

0 15 30 30 30 15y Ay ByF R k k k k k R= = − − − − − +∑0 30 12' 30 24' 30 36' 15 48' 48'

A yM k k k k B= = + + + +

∑i i i i i

= 60k = 60k



Bow Notation

15K

30K

30K

30K

15K

R Ay

R By

1

23

4

5

A

B

C

D E

F

G



Maxwell Diagram

A

B

C

D

E

F

G

1

2

3

60K 60K

15K

30K

30K

30K

15K

1

23

4

5 A

B

C

D EF

G

4

,5



Analysis by Maxwell Diagram50k 50k

50k

20k

12’ 12’ 6’

6’

6’



Free Body Diagram50k 50k

50k

20k

12’ 12’ 6’

6’

6’

R Bx

R Ax R Ay



Bow Notation50k 50k

50k

20k

285K

265K 150K

A B

C

D E

G

F

1 3

2

4



Maxwell Diagram

50k

50k

50k

20k

285K

265K 150K A B

C

D E

G

F

1 3

24

A

B

C

D

E

F

G

1

2

3

4



Summary

Three Methods of Analysis Method of Joints

Method of Sections

Maxwell Diagrams



Rap Up

Assignment – Chapter 4 – 1.27, 1.302.1, 2.5, 2.11, 3.1, & 3.6 Due 10/02

maxwell diagram

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