Sample og GRP tank Design Calculation PDF

Preview

Summary

Designed by : Project : Above Ground Water Tank Reviewed by : Cled Bagas Date : Feb-28-18 Rev. 0 Client : SAIPEM S.P.A Doc no : AWF-TDC-01 Design Calculation for DN1200 cylindrical shell (Horizontal Tank) according to BS EN13121-3:2006 Given Data : Vessel Diameter (D) = 1.2 m Internal Pressure (PSop...

Description

Designed by : Project : Above Ground Water Tank

Reviewed by : Cled Bagas Date : Feb-28-18

Client : SAIPEM S.P.A

Rev. 0

Doc no : AWF-TDC-01

Design Calculation for DN1200 cylindrical shell (Horizontal Tank) according to BS EN13121-3:2006 Given Data : 1.2

m

Saddle Distance (L) =

1.3

m

Length of Cylinder (Ls) =

2.4

m

Vessel Diameter (D) =

51 kg/m2

Internal Pressure (PSop) =

Hydrostatic Pressure (Php) = 6656.92 kg/m2 Design Temperature (TS) = 93 3

°C

Cured Resin density (ρ F ) =

1140

kg/m

Weight of Content(Wc)=

2910

kg

Resin HDT =

150

°C

Weight of Vessel (Wv) =

595.2

kg

Density of Content (ρ F ) =

1000

kg/m3

Wind Pressure (Pwind) =

120.2

kg/m2

Laminate Density =

1600

kg/m3

Width of Saddle (b1) =

0.25

m

Laminate Flexural Modulus Eɸb =

3800

Mpa

Laminate Axial Modulus Ex =

1725

Mpa Design Factor , K 7.9.5.1,7.9.5.7,Table-7/EN 1994-4/Table-18

Fiberglass properties (Table 3 BS EN 13121-3 2016) Fiberglass Type

CSM

WR

mass per layer(m) = 0.450 ultimate tensile strength (ui)=

unit Tensile Modulus (Xi)=

CFW

Factor

Unit 2

0.600

0.594

kg/m

200

600

500

N/mm

14000

16000

28000

N/mm

γ

γ F ,i A 1

M

1.4

Value

1.0

A2

1.5

A3

1.2

A4

1.2

A5

1.0

y F,w y F,p

K5

2.4 1.35 1.50 0.76

Ultimate Tensile Unit Load, Ulam,k= u1.m1. n1.+ u2 .m2. n2... + uz mz nz _Eq. 12

=

Proposed laminate thickness t (BS 4994)

1.1

0.72

2

1

6

0.9

0.6

2 3.56 kg/m

mz=n x m,mass of each layer

2

0.7

2.57 mm

tn=(mz)(tc)thickness of each laminate

n= mz= tn = t=

5.21

N/mm

Remarks

CSM WR CFW Unit tc = 2.2

2322.00

thickness constant,figure 5 layers

Limit Design Laminate Unit Loading Ui,d,R = ulam,k/(y M .A A 1 .A A 2 .A A 3 .A A 4 ) Eq. Eq 9

No of layers No.

=

overall thickness of laminate

mm

743.088

N/mm

Factored External Design Pressure 10.10.3.5 Eq.182

=

180.300

2

kg/m

Check for Circumferencial Unit Load due to vessel weight

Check for Circumferencial Unit Load due to content and

10.10.10.3.1 ,

internal pressure 10.10.10.3.1 Eq.157

Eq.156 =

126.47

N/mm

< Ui,d,R

∴ SATISFACTORY

Check for maximum tensile Unit Load due to Vessel + content +

=

112.25

Ui,d,R ∴ SATISFACTORY

N/mm <

Check for Unit Load at Mid Span 10.10.3.2.3

internal pressure 10.10.10.3.1 ,

Eq.162

where :

Eq.158 =

238.72

N/mm

< Ui,d,R

∴ SATISFACTORY

Check thickness for critical axial buckling unit load 10.3.2

=

47.56

Check the thickness for Max Unit Load due at nadir of Sadle 10.10.4.2.2

Eq.190

W1 = (Wc + Wv)/2

Eq.41 =

220.30

N/mm

< Ui,d,R

∴ SATISFACTORY

Check for critical circumferential buckling pressure 10.3.3 C0 = =

473.01

kg/m2

> Pd,cr

1.0

Ui,d,R ∴ SATISFACTORY

N/mm <

=

140.16

N/mm <

Eq.189 Ui,d,R ∴ SATISFACTORY

Summary : CSM =

2 layers

Eq.45

WR =

1 layers

∴ SATISFACTORY

CFW =

6 layers

Thickness =

Eq.187

5 21 mm 5.21...