Metal roof

C-Purlins

Z-Purlins

500

1000 2000 2000 2000 2000 2000 2000 1000

6000

Fig.1: Reinforced-concrete columns with corbels supporting a roof truss system (dimensions are in millimeters).

This figure can be read as an elevation view along the Line (1) of the drawing shown in Fig. 3.

N. B: The way how the outer overhanging portion of the metal roof is connected to the rest of the structural

system has not been included in this project for simplification./n5

3

(2)

(1)

1000 2000 2000 2000 2000 2000 2000 1000

BA

CDEFG

EU

X₂

*

*

X₂

X₁/nPHYSICAL PROPERTIES

Nominal

Type

Thickness

22

mm

(in.)

0.76

(0.030)

Design

Thickness

mm

(in.)

0.762

(0.0300)

Overall

Depth

mm

(in.)

37.4

(1.47)

Weight

(lb/ft²)

8.50

(1.74)

Section Modulus

M*

mm³

(in³)

9 529

(0.1772)

M™

mm³

(in)

10 061

(0.1875)

Moment of Inter

for Deflection

mm

(in)

202 228

(0.1481)/nCol. 1

Purlin ID

B1-B2

C1-C2

D1-D2

E1-E2

F1-F2

G1-G2

H1-H2

B2-B3

C2-C3

D2-D3

E2-E3

F2-F3

G2-G3

H2-H3

B3-B4

C3-C4

D3-D4

E3-E4

F3-F4

G3-G4

H3-H4

B4-B5

C4-C5

D4-D5

E4-E5

F4-F5

G4-G5

H4-HS

B5-B6

C5-C6

D5-D6

ES-E6

FS-F6

G5-G6

HS-H6

Col. 2

Col. 3

Length Ag

(mm)

Col. 4

Own

weight

(kN/m)

Col. 5

Tributary

width

(mm)

Col. 6

Roof load

intensity

(kN/m²)

Col. 7

Roof load

carried by the

purlin (kN/m)

Col. 8

Total load

carried by

the purlin

(kN/m)

Col.9

Reactions on

each truss

carrying the

purlin (kN)