Homework 1 provides forces and dimensions for a frame with 4 members AD, AB, BC, and CD of varying lengths between 2-4m and forces between 10-100kN. Homework 2 gives forces and dimensions for a 3 member frame ABC with member lengths of 1, 3, and 3m and forces of 10-20kN. Homework 3 specifies member AE is constant and provides forces and dimensions for frame ABC with member lengths of 1, 1, and 1m and forces of 20 and 450kN. Homework 4 notes member AB is too short by 1mm for a frame AD and provides dimensions of 10m for members AD and forces of 300kN.

1. •Homework 1:
40 kN10 kN/m 100 kN
A
B C D
/
2 m
4 m 4 m 2 m4 m 4 m
1

2. •Homework 2:
20 kN20 kN
10 kN
1 3
m
1
2 3
3m
4 5
3m 3m
2

3. •Homework 3:
AE is constant.
A B C
1 2 3
1m
450D
20 kN
600
5
3
20 kN

4. •Homework 4:
Member AB is too short by 1 mm.
(i.e., AB is 1 mm shorter than C( ,
required, hence it has to be
pulled to fit in the frame). All
b h i lmembers have cross sectional
areas 35 cm2 and E=2.1x103 t/cm2
D
A B
D
300
300
300
300
A B
10m
300 300
4