Table 5 The quantity and shape of steel used for different materials sizes.

From: Effect of single tube sections on the structural safety of Chinese solar greenhouse skeletons

Serial number

Main beam size/mm

Amount of steel (t)/kg

Form of a variable (L)/mm

T/(mm/kg)

1

25 × 40 × 2

902.27

47.766

0

2

25 × 45 × 2

948.96

39.585

1.7522

3

25 × 50 × 2

995.64

33.524

1.5253

4

30 × 60 × 2

1162.3

27.079

0.7956

5

30 × 65 × 2

1209

25.82

0.7155

6

30 × 70 × 2

1255.7

24.796

0.6499

7

30 × 75 × 2

1302.4

23.896

0.5965

8

30 × 80 × 2

1349.1

23.169

0.5269

9

30 × 85 × 2

1395.8

22.444

0.5141

10

30 × 90 × 2

1442.5

21.788

0.4809

11

30 × 95 × 2

1489.2

21.136

0.4537

12

30 × 100 × 2

1535.8

20.597

0.4288

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