FIBREGLASS COMPOSITES

TANKS & VESSELS

PANEL TANKS

D
VE T
A P P R O UC
D
P RO

Fibre Glass & Prefab Houses L.L.C.

 INTRODUCTION ACCESSORIES

Extra Co is a leading manufacturer of GRP Sectional Hot Press Panel Tanks for water storage that has ensured,

since its establishment in year 1981, a consistent emphasis on health, safety and cusomer satisfaction, by using

state of the art technology in GRP Panel Design and Production. ROOF STIFFENER IN GRP

The long life, maintenance free performance of Extra Co Hot Press Panel Tanks, gives it an edge over other types
BOTTOM CLEAT ROOF CLEAT
of tanks, especially in remote, often inhospitable locations, usually of a corrosive nature.

The core of Extra Co’s success and pre-eminence in its field is a steadfast commitment to a continuing PVC ROOF SUPPORT AND HDG ACCESSORIES

programme of product development, engineering, innovation, service and quality.

QUALITY ASSURANCE POLICY S/S bolts, nuts, washers PVC foam gasket Air Vent

Extra Co’s panels and all related parts conform to the water quality standards and food sanitation act recognised by

the Water Regulation Advisoty Scheme (WRAS) and are manufactured to the requirements of the quality standards of

ISO 9001:2008 and API SPEC Q1 8th edition.

External Ladder Level Indicator (optional) Internal Ladder SS Tie Rods

PVC Flange Stay Plate ( 2 holes) SS Bracket

Stay Plate ( 4 holes) SS Bracket

1 10
 TANK PANELS NEW VENTURE

Extra Co’s Hot Press Panel Tanks are engineered for high
performance and tested to the highest requirements of BS and ASTM
standards. Qualified Engineers and craftsmen operate an in-house SMC
(Sheet Moulding Compound) and hot press moulding facilities, ensuring
a total control for all manufacturing stages, starting from procurement of
raw materials, engineering, production, right through to final
commissioning and installation.

SECTION A-A What is SMC

SECTION B-B SECTION C-C SECTION D-D SMC means Sheet Moulding Compound, built up of resin, glass fibres,
catalysts and fillers. In the line of production, a semi finished sheet is first
produced, then moulded under heat and pressure and cured to give the
hot pressed end-product. These panels are non-toxic and hygienic for
water storage and have many advantages over cold press techniques,
especially vis-a-vis toxicity, opacity and consistency of materials.

Extra Co’s high quality GRP water storage tanks meet the requirement
of ASTM D 3841-92 and BS 7491. The benefits of storing potable water in
GRP tanks have now been recognised and we are very pleased to see our
tanks being widely used in residential, commercial, industrial and in public
SIDE PANEL DRAIN PANEL ROOF & BOTTOM PANEL work sectors in the country. We are also experiencing an increase in the
export to other countries in the Gulf, Middle East & Africa, where the
1000 consciousness of hygienic storage of potable water is growing. We are
committed to a continuous programme of product development and
testing in order to serve the needs of our valued customers and clients.
1000

0
63

FEATURES
Ø

r HYGIENIC FOR STORAGE OF DRINKING WATER

Ø 650 r ”WRAS” APPROVED
ROOF MANHOLE PANEL (MH) MANHOLE COVER r ULTRA-VIOLET PROTECTION AGAINST ALGAE GROWTH
1000
630 r HIGH FLEXURAL AND TENSILE STRENGTH
100

65

Ø 650 r ENGINEERED FOR RELIABLE PERFORMANCE

70

SECTION E-E SECTION F-F

r HIGH RIGIDITY
r FLAME RETARDANCY
r HIGH CORROSION RESISTANCE
r LONG LIFE
r MAINTENANCE FREE
r LIGHT WEIGHT
r SIMPLE ASSEMBLY - ALL SIZES
r HIGH TEMPERATURE CURING (1500C)
r HIGH MOULDING PRESSURE (70 BARS)
ROOF MANHOLE PANEL MANHOLE COVER r HEIGHT UP TO 4.0 METERS

9 2
 GRP HOT PRESSED SECTIONAL (PANEL) WATER TANKS GENERAL ARRANGEMENT FOR CONCRETE BEAMS

The concrete beams should have

S.No. PHYSICAL CHARACTERISTICS STANDARD VALUES
1. SPECIFIC GRAVITY ASTM D 792 1.8
r Width of at least 300mm

2 TENSILE STRENGTH ASTM D 638; BS 2782; (1000 Kg/cm2 ±10%)

r Height of at least 500mm
(Longitudinal Transversal) ASTM D 3841 r Top of beams to be smooth and
strictly horizontal
3. FLEXURAL STRENGTH ASTM D 790; BS 2782; (1900 Kg/cm2 ±10%)
ASTM D 3841; BS 5734
4. IMPACT STRENGTH ASTM D 256; BS 2782; BS 5734 (72J /m2 - 85J /m2)

5. COMPRESSIVE STRENGTH ASTM D 695 (2500 Kg/cm2 - 3000 Kg/cm2)

6. SHEAR STRENGTH ASTM D 2344; BS 2782 (800 Kg/cm2 - 1000 Kg/cm2)

7. WATER ABSORPTION ASTM D 570; BS 7491 0.04% - 0.10%

General Arrangement
8. GLASS CONTENT ASTM D 2584; BS 2782 More than 30%
The following are typical arrangements of concrete beams for various tank sizes. The plinth spacings are user-friendly
9. LIGHT TRANSMISSION -------- 0.005 %
10. COEFFICIENT OF THERMAL
EXPANSION ASTM D 696 2 x 10-5/0C
11. THERMAL CONDUCTIVITY -------- 0.15 kcal/m/hr/0C
12. BARCOL HARDNESS ASTM D 2583; BS 2782 > 50
13. CAVITY -------- Less than 1%
14. YOUNG’S MODULUS -------- 1.40 x 105Kg/cm2
15. TOXICITY BS 6920 Nil
16. MICRO-BIOLOGICAL GROWTH BS 6920 Nil
17. ULTRA-VIOLET RAY -------- Stabilised/resistant
18. OPACITY BS 2782 99.9%

• We reserve our rights to provide alternative design.

ENGINEERING CALCULATIONS
STEEL FRAME SUPPORT
r STRUCTURAL DESIGN r SAND & SNOW LOADING
r HYDROSTATIC PRESSURE r SEISMIC LOADING
r WIND LOADING r MAINTENANCE ACCESS LOADING
Above calculations can be provided upon request

INSULATION Properties of Insulation (Polyurethane)

Extra Co produces insulated panels to meet the Density 38 to 40 Kg/m3
temperature extreme of the gulf and tropical regions. Thermal Conductivity 0.018 to 0.020 kcal/m/hr/Cº
Insulation thickness (as desired) is positioned in between
Closed cells 90 to 95 %
the GRP single panel and GRP cover. These panels are
used for the side and roof of the tanks. Air layer exists Operation Temperature -60ºC to + 80ºC
between the roof and the water level, which itself acts as a
Insulation Thickness 25mm, 40mm and 50mm
thermal insulation.
ARRANGEMENT OF FRAME SUPPORT
Light transmission 0.00 %
• A - (Beam) • B - (Angle)

3 8
 BRACING SYSTEMS GRP HOT PRESSED SECTIONAL (PANEL) WATER TANKS

Tanks can have either type of the following bracing systems, subject to the noted sizes restriction: GRP PANEL

INTERNAL BRACING
r Apply only for tanks of height >1.0 m
r Through 12 mm tie rods (S/S Grade 316) for External Ladder
tank sizes upto 5m x 5m x 3m (H)
INSULATION (optional)
r Through angle brackets Lockable hinged Cover
avoiding tie rods
GRP COVER
(all in S/S Grade 316) Air Vent
SIDE PANEL ROOF PANEL
Overflow
Contents of the panel tank
Inlet
COMPONENTS STANDARD ITEMS
Internal Ladder
Tank Panel Hot pressed SMC-cream (ivory) colour
Tie Rod Material SMC Suitable for storing drinking water
MS Plate/Strip
Nuts, Bolts, Washers • S/S grade 316 in contact with liquid water
• S/S grade 304 for non-water contact
MS Brackets Sealant / Gasket PVC foam
External Reinforcement MS hot dipped galvanised
Outlet Outlet uPVC Roof Support Internal Reinforcement S/S grade 316 angle stays, tie angles or tie rods
External Ladder Hot dip galvanised steel
Internal Ladder uPVC or GRP Ladder
Drain
Roof Support 3” uPVC Pipes
C/U Channel Level Indicator (optional) Mechanical float switch/clear tube
EXTERNAL BRACING Steel Skid Hot dip galvanised or epoxy coated MS channels
r Apply only for tanks of height >1.0 m Finishing Smooth internal and external finish
r Through hot dip galvanised parts support the panels Tie Rods S/S 316 rods 12mm
from the external sides. Resistance Water temperature upto 55˚C
r This system can be used for all tank sizes, especially for
Note INSULATED PANEL
tank sizes greater than 6m x 6m x 3m (H). • Alternatives to above standard items are also available. • We reserve our right to change above item specifications according to project requirements.
• For large size tanks, external bracing is recommended. • Level indicator applies for tanks height ≥ 3.0 m (optional)
External Ladder

INSTALLATION OF TANKS
Lockable hinged Cover Extra Co panel tanks are constructed from prefabricated hot press moulded GRP panels, which are easily assembled at
Vent the job site. Standard panel sizes being 1.m x 1.5m and 0.5m x 1m. Panels are connected together by bolts. Special gaskets
are used to completely seal the tank.
Overflow With careful selection of suitable panels, the tank shape and size can be designed to completely match the installation at site.
The installation is one of the important task of panel tank. The project is not complete unless satisfactory installation is
Inlet
achieved.
Bottom Bottom Panel Side Wall Panel Roof Panel
Internal Ladder Panel
Side Panel Side Panel

MS Plate/Strip M12 x 45 LG. Bolt,

M12 x 50 LG. M12 x 45 LG. Nut & 2 Washers
Bolt & Nut (SS 304) Bolt & Nut (SS 304) (SS 304)
uPVC Roof Support
MS Angle MS Flat Bar for
Outlet height > 1.0 m
MS Flat Bar Both Side
BOTTOM PANEL TO BOTTOM PANEL FIXING SIDE PANEL TO SIDE PANEL FIXING SIDE WALL PANEL TO ROOF PANEL FIXING

Side Panel
Drain Bottom Panel
Side Wall Panel
M12 x 45 LG. Bolt & Roof Panel Roof Panel
C/U Channel Nut (SS 304) Side Wall Panel
MS Flat Bar
MS Flat Bar Both Sides
M12 x 45 LG. Bolt & Nut
(SS 304) Corner Angle MS Flat Bar M12 x 45 LG. Bolt,
65 x 65 x 6 THK Nut & 2 Washers
MS Channel M12 x 45 LG. Bolt (SS 304)
& Nut (SS 304)
SIDE PANEL TO BOTTOM PANEL FIXING VERTICAL CORNER FIXING ROOF PANEL TO ROOF PANEL FIXING

7 4
 GRP HOT PRESSED SECTIONAL (PANEL) WATER TANKS SHEET MOULDING COMPOUND (SMC)

In-House testing facilities

Extra Co SMC has excellent moulding properties, good surface finish and high strength.
1 Tensile Strength
2 Flexural Strength Applications of SMC
3 Compressive Strength
4 Shear Strength SMC is used in hot press moulding
5 Hydrostatic Pressure Test 1. Construction parts: panels,
6 Barcol Hardness panel tanks, bathtubs, doors, etc.

7 Water Absorption 2. Industrial parts

8 Glass Content Test 3. Electrical and electronic parts

9 Thickness Test 4. Chemical resistance parts

10 Specific Gravity 5. General parts

6. Automotive/transport parts

Compressive Test Universal Testing Machine

Characteristics of SMC Features of SMC
1. Water absorption 0.04% - 0.10%
1. Excellent hot moulding properties
2. Specific gravity 1.8
2. Suitable for mass production
3. Barcol hardness >50
3. Low shrinkage
4. Flexural strength (avg) 1800 Kg/cm2
4. Good surface finish
5. Glass content >30%

Flame Retardancy Data of Solution

Flexural Test Tensile Test Hydrostatic Test

STANDARD SIZES OF TANKS Specification Result

SMC can be a flame retardant product. Its application
is for interior wall panels, window frames, tables,
Height in meter (1.0/1.5/2.0/2.5/3.0/3.5/4.0) ceiling panels, etc. Its characteristics are: 1. Smell and Taste Normality Normal
WxL WxL WxL WxL WxL WxL WxL WxL WxL WxL WxL WxL WxL WxL WxL
1x1 - - - - - - - - - - - - - - 2. Turbidity Within 2º 0.16
1 x 1.5 1.5 x 1.5 - - - - - - - - - - - - - 1. Halogen-free
1x2 1.5 x 2 2x2 - - - - - - - - - - - - 3. Chromaticity Within 5º 2.5
1 x 2.5 1.5 x 2.5 2 x 2.5 2.5 x 2.5 - - - - - - - - - - - 2. Low smoke
1x3 1.5 x 3 2x3 2.5 x 3 3x3 - - - - - - - - - - 4. Heavy metal Less than 0.1 ppm 0
1 x 3.5 1.5 x 3.5 2 x 3.5 2.5 x 3.5 3 x 3.5 3.5 x 3.5 - - - - - - - - - 3. Non-toxic
1x4 1.5 x 4 2x4 2.5 x 4 3x4 3.5 x 4 4x4 - - - - - - - - 5. pH 5.8 - 9.6 6.07
1 x 4.5 1.5 x 4.5 2 x 4.5 2.5 x 4.5 3 x 4.5 3.5 x 4.5 4 x 4.5 4.5 x 4.5 - - - - - - - 4. Excellent mouldability
1x5 1.5 x 5 2x5 2.5 x 5 3x5 3.5 x 5 4x5 4.5 x 5 5x5 - - - - - - 6. Residue on evaporation Less than 30 ppm 29
1 x 5.5 1.5 x 5.5 2 x 5.5 2.5 x 5.5 3 x 5.5 3.5 x 5.5 4 x 5.5 4.5 x 5.5 5 x 5.5 5.5 x 5.5 - - - - - 5. Excellent appearance
1x6 1.5 x 6 2x6 2.5 x 6 3x6 3.5 x 6 4x6 4.5 x 6 5x6 5.5 x 6 6x6 - - - - 7. Residual Chlorine Less than 0.2 ppm 0.2
1 x 6.5 1.5 x 6.5 2 x 6.5 2.5 x 6.5 3 x 6.5 3.5 x 6.5 4 x 6.5 4.5 x 6.5 5 x 6.5 5.5 x 6.5 6 x 6.5 6.5 x 6.5 - - -
1x7 1.5 x 7 2x7 2.5 x 7 3x7 3.5 x 7 4x7 4.5 x 7 5x7 5.5 x 7 6x7 6.5 x 7 7x7 - -
1 x 7.5 1.5 x 7.5 2 x 7.5 2.5 x 7.5 3 x 7.5 3.5 x 7.5 4 x 7.5 4.5 x 7.5 5 x 7.5 5.5 x 7.5 6 x 7.5 6.5 x 7.5 7 x 7.5 7.5 x 7.5 -
1x8 1.5 x 8 2x8 2.5 x 8 3x8 3.5 x 8 4x8 4.5 x 8 5x8 5.5 x 8 6x8 6.5 x 8 7x8 7.5 x 8 8x8 Methods of Handling SMC

1m3 = 1000 L = 264.2 USG = 220.0 IG

1. Storage condition
Temperature below 21ºC, protect from direct sunlight. Keep rolls closed
2. Avoid water contact and direct sunlight
3. Only one day production quantity in workshop
4. If polyethylene sheet is removed, SMC should be processed
5. Do not keep SMC without polyethylene sheet before processing
6. Wear a mask and plastic eye glasses
Note • Tanks upto 50m (L) x 50m (W) x 4m (H) are produced as well • Tanks with partitions are available • Insulated tanks are available

5 6
 GRP HOT PRESSED SECTIONAL (PANEL) WATER TANKS SHEET MOULDING COMPOUND (SMC)

In-House testing facilities

Extra Co SMC has excellent moulding properties, good surface finish and high strength.
1 Tensile Strength
2 Flexural Strength Applications of SMC
3 Compressive Strength
4 Shear Strength SMC is used in hot press moulding
5 Hydrostatic Pressure Test 1. Construction parts: panels,
6 Barcol Hardness panel tanks, bathtubs, doors, etc.

7 Water Absorption 2. Industrial parts

8 Glass Content Test 3. Electrical and electronic parts

9 Thickness Test 4. Chemical resistance parts

10 Specific Gravity 5. General parts

6. Automotive/transport parts

Compressive Test Universal Testing Machine

Characteristics of SMC Features of SMC
1. Water absorption 0.04% - 0.10%
1. Excellent hot moulding properties
2. Specific gravity 1.8
2. Suitable for mass production
3. Barcol hardness >50
3. Low shrinkage
4. Flexural strength (avg) 1800 Kg/cm2
4. Good surface finish
5. Glass content >30%

Flame Retardancy Data of Solution

Flexural Test Tensile Test Hydrostatic Test

STANDARD SIZES OF TANKS Specification Result

SMC can be a flame retardant product. Its application
is for interior wall panels, window frames, tables,
Height in meter (1.0/1.5/2.0/2.5/3.0/3.5/4.0) ceiling panels, etc. Its characteristics are: 1. Smell and Taste Normality Normal
WxL WxL WxL WxL WxL WxL WxL WxL WxL WxL WxL WxL WxL WxL WxL
1x1 - - - - - - - - - - - - - - 2. Turbidity Within 2º 0.16
1 x 1.5 1.5 x 1.5 - - - - - - - - - - - - - 1. Halogen-free
1x2 1.5 x 2 2x2 - - - - - - - - - - - - 3. Chromaticity Within 5º 2.5
1 x 2.5 1.5 x 2.5 2 x 2.5 2.5 x 2.5 - - - - - - - - - - - 2. Low smoke
1x3 1.5 x 3 2x3 2.5 x 3 3x3 - - - - - - - - - - 4. Heavy metal Less than 0.1 ppm 0
1 x 3.5 1.5 x 3.5 2 x 3.5 2.5 x 3.5 3 x 3.5 3.5 x 3.5 - - - - - - - - - 3. Non-toxic
1x4 1.5 x 4 2x4 2.5 x 4 3x4 3.5 x 4 4x4 - - - - - - - - 5. pH 5.8 - 9.6 6.07
1 x 4.5 1.5 x 4.5 2 x 4.5 2.5 x 4.5 3 x 4.5 3.5 x 4.5 4 x 4.5 4.5 x 4.5 - - - - - - - 4. Excellent mouldability
1x5 1.5 x 5 2x5 2.5 x 5 3x5 3.5 x 5 4x5 4.5 x 5 5x5 - - - - - - 6. Residue on evaporation Less than 30 ppm 29
1 x 5.5 1.5 x 5.5 2 x 5.5 2.5 x 5.5 3 x 5.5 3.5 x 5.5 4 x 5.5 4.5 x 5.5 5 x 5.5 5.5 x 5.5 - - - - - 5. Excellent appearance
1x6 1.5 x 6 2x6 2.5 x 6 3x6 3.5 x 6 4x6 4.5 x 6 5x6 5.5 x 6 6x6 - - - - 7. Residual Chlorine Less than 0.2 ppm 0.2
1 x 6.5 1.5 x 6.5 2 x 6.5 2.5 x 6.5 3 x 6.5 3.5 x 6.5 4 x 6.5 4.5 x 6.5 5 x 6.5 5.5 x 6.5 6 x 6.5 6.5 x 6.5 - - -
1x7 1.5 x 7 2x7 2.5 x 7 3x7 3.5 x 7 4x7 4.5 x 7 5x7 5.5 x 7 6x7 6.5 x 7 7x7 - -
1 x 7.5 1.5 x 7.5 2 x 7.5 2.5 x 7.5 3 x 7.5 3.5 x 7.5 4 x 7.5 4.5 x 7.5 5 x 7.5 5.5 x 7.5 6 x 7.5 6.5 x 7.5 7 x 7.5 7.5 x 7.5 -
1x8 1.5 x 8 2x8 2.5 x 8 3x8 3.5 x 8 4x8 4.5 x 8 5x8 5.5 x 8 6x8 6.5 x 8 7x8 7.5 x 8 8x8 Methods of Handling SMC

1m3 = 1000 L = 264.2 USG = 220.0 IG

1. Storage condition
Temperature below 21ºC, protect from direct sunlight. Keep rolls closed
2. Avoid water contact and direct sunlight
3. Only one day production quantity in workshop
4. If polyethylene sheet is removed, SMC should be processed
5. Do not keep SMC without polyethylene sheet before processing
6. Wear a mask and plastic eye glasses
Note • Tanks upto 50m (L) x 50m (W) x 4m (H) are produced as well • Tanks with partitions are available • Insulated tanks are available

5 6
 BRACING SYSTEMS GRP HOT PRESSED SECTIONAL (PANEL) WATER TANKS

Tanks can have either type of the following bracing systems, subject to the noted sizes restriction: GRP PANEL

INTERNAL BRACING
r Apply only for tanks of height >1.0 m
r Through 12 mm tie rods (S/S Grade 316) for External Ladder
tank sizes upto 5m x 5m x 3m (H)
INSULATION (optional)
r Through angle brackets Lockable hinged Cover
avoiding tie rods
GRP COVER
(all in S/S Grade 316) Air Vent
SIDE PANEL ROOF PANEL
Overflow
Contents of the panel tank
Inlet
COMPONENTS STANDARD ITEMS
Internal Ladder
Tank Panel Hot pressed SMC-cream (ivory) colour
Tie Rod Material SMC Suitable for storing drinking water
MS Plate/Strip
Nuts, Bolts, Washers • S/S grade 316 in contact with liquid water
• S/S grade 304 for non-water contact
MS Brackets Sealant / Gasket PVC foam
External Reinforcement MS hot dipped galvanised
Outlet Outlet uPVC Roof Support Internal Reinforcement S/S grade 316 angle stays, tie angles or tie rods
External Ladder Hot dip galvanised steel
Internal Ladder uPVC or GRP Ladder
Drain
Roof Support 3” uPVC Pipes
C/U Channel Level Indicator (optional) Mechanical float switch/clear tube
EXTERNAL BRACING Steel Skid Hot dip galvanised or epoxy coated MS channels
r Apply only for tanks of height >1.0 m Finishing Smooth internal and external finish
r Through hot dip galvanised parts support the panels Tie Rods S/S 316 rods 12mm
from the external sides. Resistance Water temperature upto 55˚C
r This system can be used for all tank sizes, especially for
Note INSULATED PANEL
tank sizes greater than 6m x 6m x 3m (H). • Alternatives to above standard items are also available. • We reserve our right to change above item specifications according to project requirements.
• For large size tanks, external bracing is recommended. • Level indicator applies for tanks height ≥ 3.0 m (optional)
External Ladder

INSTALLATION OF TANKS
Lockable hinged Cover Extra Co panel tanks are constructed from prefabricated hot press moulded GRP panels, which are easily assembled at
Vent the job site. Standard panel sizes being 1.m x 1.5m and 0.5m x 1m. Panels are connected together by bolts. Special gaskets
are used to completely seal the tank.
Overflow With careful selection of suitable panels, the tank shape and size can be designed to completely match the installation at site.
The installation is one of the important task of panel tank. The project is not complete unless satisfactory installation is
Inlet
achieved.
Bottom Bottom Panel Side Wall Panel Roof Panel
Internal Ladder Panel
Side Panel Side Panel

MS Plate/Strip M12 x 45 LG. Bolt,

M12 x 50 LG. M12 x 45 LG. Nut & 2 Washers
Bolt & Nut (SS 304) Bolt & Nut (SS 304) (SS 304)
uPVC Roof Support
MS Angle MS Flat Bar for
Outlet height > 1.0 m
MS Flat Bar Both Side
BOTTOM PANEL TO BOTTOM PANEL FIXING SIDE PANEL TO SIDE PANEL FIXING SIDE WALL PANEL TO ROOF PANEL FIXING

Side Panel
Drain Bottom Panel
Side Wall Panel
M12 x 45 LG. Bolt & Roof Panel Roof Panel
C/U Channel Nut (SS 304) Side Wall Panel
MS Flat Bar
MS Flat Bar Both Sides
M12 x 45 LG. Bolt & Nut
(SS 304) Corner Angle MS Flat Bar M12 x 45 LG. Bolt,
65 x 65 x 6 THK Nut & 2 Washers
MS Channel M12 x 45 LG. Bolt (SS 304)
& Nut (SS 304)
SIDE PANEL TO BOTTOM PANEL FIXING VERTICAL CORNER FIXING ROOF PANEL TO ROOF PANEL FIXING

7 4
 GRP HOT PRESSED SECTIONAL (PANEL) WATER TANKS GENERAL ARRANGEMENT FOR CONCRETE BEAMS

The concrete beams should have

S.No. PHYSICAL CHARACTERISTICS STANDARD VALUES
1. SPECIFIC GRAVITY ASTM D 792 1.8
r Width of at least 300mm

2 TENSILE STRENGTH ASTM D 638; BS 2782; (1000 Kg/cm2 ±10%)

r Height of at least 500mm
(Longitudinal Transversal) ASTM D 3841 r Top of beams to be smooth and
strictly horizontal
3. FLEXURAL STRENGTH ASTM D 790; BS 2782; (1900 Kg/cm2 ±10%)
ASTM D 3841; BS 5734
4. IMPACT STRENGTH ASTM D 256; BS 2782; BS 5734 (72J /m2 - 85J /m2)

5. COMPRESSIVE STRENGTH ASTM D 695 (2500 Kg/cm2 - 3000 Kg/cm2)

6. SHEAR STRENGTH ASTM D 2344; BS 2782 (800 Kg/cm2 - 1000 Kg/cm2)

7. WATER ABSORPTION ASTM D 570; BS 7491 0.04% - 0.10%

General Arrangement
8. GLASS CONTENT ASTM D 2584; BS 2782 More than 30%
The following are typical arrangements of concrete beams for various tank sizes. The plinth spacings are user-friendly
9. LIGHT TRANSMISSION -------- 0.005 %
10. COEFFICIENT OF THERMAL
EXPANSION ASTM D 696 2 x 10-5/0C
11. THERMAL CONDUCTIVITY -------- 0.15 kcal/m/hr/0C
12. BARCOL HARDNESS ASTM D 2583; BS 2782 > 50
13. CAVITY -------- Less than 1%
14. YOUNG’S MODULUS -------- 1.40 x 105Kg/cm2
15. TOXICITY BS 6920 Nil
16. MICRO-BIOLOGICAL GROWTH BS 6920 Nil
17. ULTRA-VIOLET RAY -------- Stabilised/resistant
18. OPACITY BS 2782 99.9%

• We reserve our rights to provide alternative design.

ENGINEERING CALCULATIONS
STEEL FRAME SUPPORT
r STRUCTURAL DESIGN r SAND & SNOW LOADING
r HYDROSTATIC PRESSURE r SEISMIC LOADING
r WIND LOADING r MAINTENANCE ACCESS LOADING
Above calculations can be provided upon request

INSULATION Properties of Insulation (Polyurethane)

Extra Co produces insulated panels to meet the Density 38 to 40 Kg/m3
temperature extreme of the gulf and tropical regions. Thermal Conductivity 0.018 to 0.020 kcal/m/hr/Cº
Insulation thickness (as desired) is positioned in between
Closed cells 90 to 95 %
the GRP single panel and GRP cover. These panels are
used for the side and roof of the tanks. Air layer exists Operation Temperature -60ºC to + 80ºC
between the roof and the water level, which itself acts as a
Insulation Thickness 25mm, 40mm and 50mm
thermal insulation.
ARRANGEMENT OF FRAME SUPPORT
Light transmission 0.00 %
• A - (Beam) • B - (Angle)

3 8
 TANK PANELS NEW VENTURE

Extra Co’s Hot Press Panel Tanks are engineered for high
performance and tested to the highest requirements of BS and ASTM
standards. Qualified Engineers and craftsmen operate an in-house SMC
(Sheet Moulding Compound) and hot press moulding facilities, ensuring
a total control for all manufacturing stages, starting from procurement of
raw materials, engineering, production, right through to final
commissioning and installation.

SECTION A-A What is SMC

SECTION B-B SECTION C-C SECTION D-D SMC means Sheet Moulding Compound, built up of resin, glass fibres,
catalysts and fillers. In the line of production, a semi finished sheet is first
produced, then moulded under heat and pressure and cured to give the
hot pressed end-product. These panels are non-toxic and hygienic for
water storage and have many advantages over cold press techniques,
especially vis-a-vis toxicity, opacity and consistency of materials.

Extra Co’s high quality GRP water storage tanks meet the requirement
of ASTM D 3841-92 and BS 7491. The benefits of storing potable water in
GRP tanks have now been recognised and we are very pleased to see our
tanks being widely used in residential, commercial, industrial and in public
SIDE PANEL DRAIN PANEL ROOF & BOTTOM PANEL work sectors in the country. We are also experiencing an increase in the
export to other countries in the Gulf, Middle East & Africa, where the
1000 consciousness of hygienic storage of potable water is growing. We are
committed to a continuous programme of product development and
testing in order to serve the needs of our valued customers and clients.
1000

0
63

FEATURES
Ø

r HYGIENIC FOR STORAGE OF DRINKING WATER

Ø 650 r ”WRAS” APPROVED
ROOF MANHOLE PANEL (MH) MANHOLE COVER r ULTRA-VIOLET PROTECTION AGAINST ALGAE GROWTH
1000
630 r HIGH FLEXURAL AND TENSILE STRENGTH
100

65

Ø 650 r ENGINEERED FOR RELIABLE PERFORMANCE

70

SECTION E-E SECTION F-F

r HIGH RIGIDITY
r FLAME RETARDANCY
r HIGH CORROSION RESISTANCE
r LONG LIFE
r MAINTENANCE FREE
r LIGHT WEIGHT
r SIMPLE ASSEMBLY - ALL SIZES
r HIGH TEMPERATURE CURING (1500C)
r HIGH MOULDING PRESSURE (70 BARS)
ROOF MANHOLE PANEL MANHOLE COVER r HEIGHT UP TO 4.0 METERS

9 2
 INTRODUCTION ACCESSORIES

Extra Co is a leading manufacturer of GRP Sectional Hot Press Panel Tanks for water storage that has ensured,

since its establishment in year 1981, a consistent emphasis on health, safety and cusomer satisfaction, by using

state of the art technology in GRP Panel Design and Production. ROOF STIFFENER IN GRP

The long life, maintenance free performance of Extra Co Hot Press Panel Tanks, gives it an edge over other types
BOTTOM CLEAT ROOF CLEAT
of tanks, especially in remote, often inhospitable locations, usually of a corrosive nature.

The core of Extra Co’s success and pre-eminence in its field is a steadfast commitment to a continuing PVC ROOF SUPPORT AND HDG ACCESSORIES

programme of product development, engineering, innovation, service and quality.

QUALITY ASSURANCE POLICY S/S bolts, nuts, washers PVC foam gasket Air Vent

Extra Co’s panels and all related parts conform to the water quality standards and food sanitation act recognised by

the Water Regulation Advisoty Scheme (WRAS) and are manufactured to the requirements of the quality standards of

ISO 9001:2008 and API SPEC Q1 8th edition.

External Ladder Level Indicator (optional) Internal Ladder SS Tie Rods

PVC Flange Stay Plate ( 2 holes) SS Bracket

Stay Plate ( 4 holes) SS Bracket

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 FIBREGLASS COMPOSITES
TANKS & VESSELS
PANEL TANKS

D
VE T
A P P R O UC
D
P RO

Fibre Glass & Prefab Houses L.L.C.