Design Suggestions

The shear resistance of many kinds of walls was presented in Table 8 in order to guide actual engineering design. The results were got through the methods of test and finite element analysis introduced in this paper. The steel yield strength was 300 N/mm2, the studs were C89 x 44.5 x 12 x 1, and the tracks were U92 x 40 x 1.

2. Conclusion

Tests and finite element analysis were presented in this paper to study the shear resistance of cold – formed steel stud walls in residential structures. We can draw the following conclusions:

(1) The material properties of the panel sheathing influence the shear resistance of cold-formed steel stud wall greatly. The shear load capcity of walls with single-sided gypsum sheathing is 34.8% of that of walls with single-sided OSB sheathing, and the total shear resistance of these two kinds of single-sided walls is close to that of wall with gypsum sheathing on one side and OSB sheathing on the other side.

Dimension of wall (height x width) (m)

Stud

spacing

(mm)

Screw

spacing

(mm)

Sheathing

Shear

resistance

(kN/m)

3×2.4

600

150/300

12mm thick gypsum sheathing on one side

3.87

9mm thick OSB sheathing on one side

11.24

12mm thick OSB sheathing on one side

13.48

12mm thick gypsum sheathing on one side and 9mm thick OSB sheathing with on the other side

14.52

12mm thick gypsum sheathing on two sides, with thickness 12mm

7.31

12mm thick OSB sheathing on both sides

25.1

12mm thick gypsum sheathing on one side and 12mm thick OSB sheathing on the other side

17.11

100/300

12mm thick gypsum sheathing on one side

4.14

9mm thick OSB sheathing on one side

12.54

12mm thick OSB sheathing on one side

15.01

12mm thick gypsum sheathing on one side and 9mm thick OSB sheathing on the other side

15.89

12mm thick gypsum sheathing on both sides

7.94

12mm thick OSB sheathing on both sides

25.12

12mm thick gypsum sheathing on one side and 12mm thick OSB sheathing on the other side

18.45

400

150/300

12mm thick gypsum sheathing on one side

4.43

9mm thick OSB sheathing on one side

13.95

12mm thick OSB sheathing on one side

21.26

12mm thick gypsum sheathing on one side and 9mm thick OSB sheathing on the other side

18.87

12mm thick gypsum sheathing on both sides

8.26

12mm thick OSB sheathing on both sides

42.72

12mm thick gypsum sheathing on one side and 12mm thick OSB sheathing on the other side

27.85

100/300

12mm thick gypsum sheathing on one side

4.82

9mm thick OSB sheathing on one side

15.75

12mm thick OSB sheathing on one side

21.98

12mm thick gypsum sheathing on one side and 9mm thick OSB sheathing on the other side

20.57

12mm thick gypsum sheathing on both sides

8.32

12mm thick OSB sheathing on both sides

38.84

12mm thick gypsum sheathing on one side and 12mm thick OSB sheathing on the other side

27.87

2.7×2.4

600

150/300

12mm thick gypsum sheathing on one side

3.91

9mm thick OSB sheathing on one side

12.08

12mm thick OSB sheathing on one side

14.30

100/300

12mm thick gypsum sheathing on one side

4.24

9mm thick OSB sheathing on one side

12.92

12mm thick OSB sheathing on one side

14.67

2.4×2.4

600

150/300

12mm thick gypsum sheathing on one side

4.97

9mm thick OSB sheathing on one side

13.70

12mm thick OSB sheathing on one side

16.51

100/300

12mm thick gypsum sheathing on one side

5.29

9mm thick OSB sheathing on one side

14.33

12mm thick OSB sheathing on one side

18.23

(2) The shear resistance of cold-formed steel stud walls is enhanced lightly with the increase of steel strength.

(3) The shear resistance of cold-formed steel stud walls is increased obviously when the stud spacing is reduced from 600 mm to 400 mm.

(4) With the decrease of wall height, the shear resistance of the wall is increased.

(5) With the narrowing of screw spacing at the perimeter, the shear resistance of cold-formed steel stud wall increases greatly.