GRP Tank Calculator, Sands Civil Services Estimation to BS 4994
Project:
Design Temp 60° C, Design Factor, K = 9.8 Calculated laminate construction = 3.1 kg.m-2 Calculated wall thickness = 6 mm Category = 2
WUC - Gaborone WTW OSEC Plant - Sodium Hypochlorite Tanks Check on Poly Phoenix Design
Tank diameter, m Calculation of Design Factor, K
2.4
Required tank volume, litres
Contents
Hand-held spray application
Machine control spray application
Hand lay-up
1.1
Design pressure (above static head):
Qc, N.mm-1
62.9 Yield Elongation
Derakane 411 HDT
5%
1.25
1.2
1.1
1.05
ü 1.1
200
20.4
0.016%
WR
300
30.6
0.019%
Allowable load limit UL
ü
K4 Factor for Cyclic Loading
Number of cycles
Range = 1.1 - 2.0
106
105
104
103
10 =10yrs @ fill / empty 3 x per day
K5 Curing procedure
62.9
As built, Qb = ∑ 0 wn.nn.un n
74.1
Qb > Qc?
ü
OK
Curing procedure?
Range = 1.1 - 1.5
1.5
K = Ks x k1 x k2 x k3 x k4 x k5
3.1 kg.m-2
Calculated, Qc
103 =10yrs @ fill / empty every 3-4 days
Post-cure
26.0
20.4 N/mm / kg/m2
Laminate construction Total weight of reinforcement
1.1
4
OK
CSM
ü 60°C
Range = 1.0 - 1.25
Load Limited
105°C
Strain Adjusted UTUS N/mm / kg/m2
Resin:
<50% loss of strength
<20% loss of strength
20-30% loss of strength
1.2
K3 Design Temperature, °C
0 0.052
Pressure at base of tank, MPa
Compatibility test or data 30-40% loss of strength
Range = 1.2 - 2.0
<1% Electrolytic Sodium Hypochlo
SG of contents
ü
K2 Factor for Chemical Compatibility
4.9
Load limited allowable Strain
1.5
Machine control filament wound
K1 Factor for Method of Manufacture:
Range = 1.5 - 3.0
20000
Tank height, inc 10% ullage, m
3.0
UTUS N/mm / kg/m2
Ks Safety Factor
Estimated wall thickness
û
9.8
Category
CSM
2.2
6.8 mm
WR
0.95
2.9 mm
<1% Electrolytic Sodium Hypochlorite
3
3
Category
ü 1
2
3
3
ü
Design Pressure
3
ü
Size of vessel, m
2 3
Geometry Safety Critical Item
Wall thickness
glass content
Resin : Glass
UTUS N/mm / kg/m2
Type of glass mat
No of Layers
Other
Based on Only dip related data coupon data ↓ ↓
Design Temp
3
Reinforced Gel Coat
ü
Known resistance ↓ Compatibility with liner / resi
Flammable
Toxic
Contents:
Corrosive
2
Highly Corrosive
Overall Design & Build Category
Weight of glass, kg.m-2
Build schedule
1
600 WR
15.6
2.00:1
33%
0.57
1
600 CSM
12.2
2.75:1
27%
1.32
1
450 CSM
9.2
2.75:1
27%
0.99
1
600 WR
15.6
2.00:1
33%
0.57
1
600 CSM
12.2
3.00:1
25%
1.32
1
450 CSM
9.2
2.00:1
33%
0.99
3.00:1
25%
2.00:1
33%
WR
0.0
0
ü Flat bottom - full
ü
Any other, eg legs, skirts,etc
û
Total >
3.3
74.1
5.8
GRP Tank Calculator: Sands Civil Services Estimation to BS 4994
Project: WUC - Mmashia WTW OSEC Plant - Sodium Hypochlorite Tanks Check on Design
Design Temp 45° C, Design Factor, K = 37.5 Calculated laminate construction = 22.3 kg.m-2 Calculated wall thickness = 8 mm Category = 1
Tank diameter, m Calculation of Design Factor, K
2.9
Required tank volume, litres
Contents
Hand-held spray application
SG of contents
Compatibility test or data
0.082
Qc, N.mm-1
118.6 Yield Elongation
Derakane 411
5%
45°C
1.25
1.20
1.15
1.10
1.05
1.05
ü Range = 1.0 - 1.25
CSM WR
Number of cycles
Range = 1.1 - 2.0
200
5.3
0.001%
300
8.0
0.001%
106
105
104
103
K5 Curing procedure
118.6
As built, Qb = ∑n0 wn.nn.un
28.3
Qb > Qc?
ü
Inadequate reinforcement
Curing procedure?
Range = 1.1 - 1.5
1.3
K = Ks x k1 x k2 x k3 x k4 x k5
22.3 kg.m-2
Calculated, Qc
103 =10yrs @ fill / empty every 3-4 days
Post-cure
6.8
5.3 N/mm / kg/m2
Laminate construction Total weight of reinforcement
1.7
104 =10yrs @ fill / empty 3 x per day
OK
Allowable load limit UL
ü
K4 Factor for Cyclic Loading
Load Limited
105°C
UTUS N/mm / kg/m2
HDT
ü
K3 Design Temperature, °C
0.01
Pressure at base of tank, MPa
Resin:
<50% loss of strength
<20% loss of strength
20-30% loss of strength
1.8
30-40% loss of strength
Range = 1.2 - 2.0
1.1
Design pressure (above static head), MPa:
ü
K2 Factor for Chemical Compatibility
6.7
<1% Electrolytic Sodium Hypochlo
Strain Adjusted UTUS N/mm / kg/m2
Machine control spray application
Hand lay-up
3.0
Machine control filament wound
K1 Factor for Method of Manufacture:
Range = 1.5 - 3.0
40000
Tank height, inc 10% ullage, m
3.0
Load limited allowable Strain
Ks Safety Factor
Estimated wall thickness
û
37.6
Category
CSM
2.2
49.1 mm
WR
0.95
21.2 mm
<1% Electrolytic Sodium Hypochlorite
3
3
Category Design Temp
3
Design Pressure
2
Size of vessel, m
3
Geometry Safety Critical Item
1
Wall thickness
glass content
Resin : Glass
UTUS N/mm / kg/m2
2.00:1
33%
0.57
1
600 CSM
3.2
2.75:1
27%
1.32
1
450 CSM
2.4
2.75:1
27%
0.99
1
600 WR
4.1
2.00:1
33%
0.57
1
600 CSM
3.2
3.00:1
25%
1.32
3
1
600 WR
4.1
2.00:1
33%
0.57
ü
1
600 CSM
3.2
3.00:1
25%
1.32
1
600 WR
4.1
2.00:1
33%
0.57
Based on Only dip related data coupon data ↓ ↓
2
Type of glass mat
No of Layers
Other
4.1
ü
2
2
600 WR
ü 1
<<<<<<<<<<
>>>>>>>>>>>
1
ü
Known resistance ↓ Compatibility with liner / res
Flammable
Toxic
Contents:
Corrosive
1
Highly Corrosive
Overall Design & Build Category
Weight of glass, kg.m-2
Build schedule
ü Flat bottom - full Any other, eg legs, skirts,etc
ü
ü Total >
4.7
28.3
7.2