PORTAL FRAME STRUCTURE SHOWING NEW SECTION SIZES:

Section

nameBeam section designation

Area(m2)

Shear Area

Ay (m2)Shear Area

Ax (m2)Ixx

(m4)Iy y

(m4)J

(m4) MaterialTension

only

COL 203x203x46 H1 5.880E-3 45.60E-6 15.40E-6 225.0E-9 Steel:350W

RAFTER 254x146x31 I1 3.970E-3 44.20E-6 4.480E-6 87.00E-9 Steel:350W

PURLIN 225x75x20x3.0 L1 1.180E-3 8.830E-6 814.0E-9 3.530E-9 Steel:350W

SUPP 254x146x31 I1 3.970E-3 44.20E-6 4.480E-6 87.00E-9 Steel:350W

SAGBARS 101.6x5.0 O1 1.510E-3 1.740E-6 1.740E-6 3.490E-6 Steel:350W

BRACING 50x50x3 A1 298.0E-6 70.00E-9 70.00E-9 1.150E-9 Steel:350W

HAUNCH 254x146x31 I1 3.970E-3 44.20E-6 4.480E-6 87.00E-9 Steel:350W

EAVES 254x146x31 I1 3.970E-3 44.20E-6 4.480E-6 87.00E-9 Steel:350W

SUPP2 254x146x31 I1 3.970E-3 44.20E-6 4.480E-6 87.00E-9 Steel:350W

PORTAL FRAME STRUCTURE SHOWING SUPPORTS:

'XYZ' = transl. f ixity 'xy z' = rot. f ixity 'P' = Prescr. displ.(m) or (rad) 'S' = Spring const.(kN/m) or (kNm/rad)

Node

No

Fixity

XYZxy z

[P]

/SX Y Z x y z

Number

of extra

Node

No. inc.

Orient.

Node

Gap (+,- or blank)

X Y Z x y z

1 XYZxyz 6 1

'XYZ' = transl. f ixity 'xy z' = rot. f ixity 'P' = Prescr. displ.(m) or (rad) 'S' = Spring const.(kN/m) or (kNm/rad)

Node

No

Fixity

XYZxy z

[P]

/SX Y Z x y z

Number

of extra

Node

No. inc.

Orient.

Node

Gap (+,- or blank)

X Y Z x y z

8 XYZxyz 6 1

15 XYZxyz

16 XYZxyz

17 XYZxyz

18 XYZxyz

LOADING ON PORTAL FRAME STRUCTURE :

Dead Loads:

IBR sheeting on the roof as well as the walls.

Live Loads:

General roof live load as indicted in SANS 10160 - 2.

Wind Loads:

WL1

Uplift on roof + 0° Wind on building

0° Wind

WL2

Uplift on roof + 90° Wind on building

90° Wind

WL3

Downward wind on roof + 0° Wind on building

0° Wind

WL4

Downward wind on roof + 90° Wind on building

90° Wind

LOAD COMBINATIONS ON TANK STRUCTURE:

DEFLECTIONS ON TANK STRUCTURE:

Self weight to be added to: DL

• See attached sheet for deflection calculations.

Load

Combination

Load

Case

ULS

f actor

SLS

f actor

LC1 DL 1.35 1.1

LC2 DL 1.2 1.1

LL 1.6 1.0

LC3 DL 0.9 1.1

WL1 1.3 1.0

LC4 DL 0.9 1.1

WL2 1.3 1.0

LC5 DL 0.9 1.1

WL3 1.3 1.0

LC6 DL 0.9 1.1

WL4 1.3 1.0

The DL + LL + WL load combinations weren’t considered since the LL and WL will never applied at the same time on this particular structure. The roof is inaccessible.