HAYOUNG GRP WATER TANK

GENERAL SPECIFICATION
(GRP SECTIONAL WATER TANK)

842, Naesam-ri, Juchon-myeon,

Gimhae-si, Gyeongnam, Korea
TEL:+82 55 903 0803 FAX:+82 303 3440 0803
http://www.hayoung-grp.co.kr e-mail:hygrp@naver.com
 Table of Contents

1. General

A. Application Scope

B. Product Requirement

C. Product Categorization

D. Range of Construction

E. Structure

F. Installation Regulations and Compliance

2. Construction and Field Management

A. Field Inspection and Installation of Base Frame

B. Panel Assembly

C. Safety Management

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1. GENERAL
A. Application Scope

The specification provides information on SMC water tank as follows. GRP (Glass-fiber
Reinforced Polyester) material is developed by incorporating and reinforcing glass fibers into the
complex of unsaturated polyester resin, filler, catalyst, parting agent, etc. The main body of the
tank consists of the panel (ceiling, side, bottom, drain) developed by molding the SMC using the
oil hydraulic press.
press The interior and exterior of the tank is reinforced with reinforcing agents
agents, with
special sealing tape inserted in the connections for rustless nuts and bolts to be assembled on
site.

B. Product Requirement
This SMC water tank has the function of storing drinking water, and must be developed by a
company of which the quality is managed by ISO certified company.

C. Product Categorization
1) Categorization according to the heat retention structure
(1) Single board type: Polyurethane foam (Nonexistent)
(2) Thermal type: Polyurethane foam (20mm – 25mm)
2) Categorization according to form
(1) General type
(2) Partition type
(3) Corner type (Pillar, “L,” “ㄷ,” and “ㅁ” type)

<General Type> <Corner Type ‘L’ Shape> <Corner Type ‘ㅁ’ Shape>

D Range of Construction
D.
GRP water tank main body (SMC panel), base frame, stiffener, internal/external ladder
assembly, and pipe fitting assembly shall be performed in this construction.

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E. Structure
1) Formation: Square panel assembly with application of internal reinforcement (tie-rod assembly)
method.
2) Panel and reinforcement must be strong enough to endure the expected weight such as water
pressure, etc.
3) This product, as a container of drinking water, must not be exposed to the inflow or
occurrence of pollutants, and must comply to the regulations on the cleaning and sanitary
management of water supply plants and water tank installation standards established by the
Ministry of Environment.

F. Installation Regulations and Compliance

1) This product, as a container of drinking water, must not be exposed to the inflow or
occurrence of pollutants, and must comply to the regulations on the cleaning and sanitary
management of water supply plants and water tank installation standards established by the
Ministry of Environment.
2) This product must be equipped with a lower panel which will prevent stagnation of precipitate
on the bottom of the tank and a drain panel for easy drainage after cleaning the interior.

Drain Panel
Bottom panel

Drainage
g
3) When dividing the tank into 2 or more, panels with partition function, so disinfectant or
pollutants do not flow into the neighboring tank.

Partition Panel

4) This product can be devised to no rainwater flows into the tank, and must be equipped with at
least one manhole for the cleaner or equipment can easily enter the tank, developed by the
GRP water tank manufacturer. (ㅁ 1,000 * 1,000)

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2. Construction and Field Management

A. Panel ((GRP Panel))

1) GRP (Glass-fiber Reinforced Polyester) material is developed by incorporating and
reinforcing glass fibers into the complex of unsaturated polyester resin, filler, catalyst, parting
agent, etc., developed by molding the SMC using the oil hydraulic press. It must not be
harmful for storage of drinking water.
2) Panel Type
The panels of GRP water tank consists of top
top, side
side, bottom
bottom, drain
drain, and manhole panels
panels,
and 0.5 X 1M flat panels are used for the ease of partition panel and fitting attachment.
3 ) Panel Standards,
The side lengths are 1*0.5, 1*1, 1*1.5, 1*2 m, based on the blueprint of the underground
water tank. (Side panel standards of tanks according to the height: See Appendix #1)
4) Panel Thickness
Because the weight is different depending on height and applied section, the grades of panel
thickness according to location must be in different grades. (Panel thickness standards: See
Appendix #2)
5) Panel Performance
When tested according to the test methods of 9.3 of KS F 4811, HAYOUNG GRP panels are
comply
p y below.

Item Unit Physical Properties Test Method

Tensile Strength Kgf/㎟ 11 KSM3305-91

Flexural Strength Kgf/㎟ 19 KSM3305-91

Flexural Modulus Kgf/㎟

g/ 1100 KSM3305-91

Compressive Strength Kgf/㎟ 23 KSM3305-91

Water Absorption Rate % 0.1 KSM3305-91

Barcol Hardness - 46 KSM3305-91

Glass Fiber Content % 31.7 KSF 4811-90

Heat Disortion Temperature ℃ 200<

Linear Expansion Coefficient - 1.7 ×10−5 / oC

Light Transmission (Grey) % Below 0.05

Coefficient of Overheat
Kcal/㎡hr℃ 5.0Kcal/㎡ hr℃
Transmission

Thermal Conductivity Kcal/㎡hr℃ 0.15Kcal/㎡ hr℃

Impact Strength (I-Zod) Kgf㎝/㎠ 59

Gravity 1.8

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 6) Heat insulation panel
Insulated panels shall be composed of three layers of GRP panel, polyurethane and vacuum
formed cover.
cover

B. Manhole
1) Manhole
M h l should
h ld be
b equipped
i d with
ith a locking
l ki d i
device, providing
idi easy internal
i t l entrance
t and
d
preventing rainwater inflow.
* Manhole : GRP with internal diameter of 600mm at least
* Hinge : Stainless steel 304 or higher grade.

C. Base frame
1) Material Wall Panel

Use hot-dip galvanized steel.

Connecting
본체고정볼트 Bolt
The specification for materials (M 12) Bottom Panel
저판
used by tank specification is ;
Anchor
앙카 볼트 Bolt
( M12 이상
(Over M12)) BaseFrame
Frame
Tank
kHHeight
i h M
Material
i l 기초

앙카 Bracket
Anchor 브라켓
2.5M or less Angle 75X75X6t
3M to 4M Channel 125X65X6t
From 4.5M Channel 150X75X6.5t

<Base material by water tank height>

2) Format
a. Bolt assembly structure
(Field welding cannot be applied due to potential danger of defect and reduction of durability
due to rusting of the cutting plane and the connecting sections.)
b. In order to prevent position breakaway or vibration of tank caused by earthquake or wind
pressure, the base frame and the tank must be fixed to the base concrete using bolts.

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D. Internal reinforcing parts
1) Materials
Inside stay of SUS 304 or SUS 316 tie-rod shall be applied in order to secure minimum
deformation of side wall panel, safety and long lifetime of the tank.

<Outside of the tank> <Inside of the tank>

Rubber Head Bolt

SUS304 or SUS 316 tie-rod

(Ø10.6 or 12.6mm)
Inner bracket
(SUS304 or SUS316)

Parts name Materials Specification

Tie-rod SUS316 or SUS304 Ø10.6 or 12.6

1760S : 160X8X5t
I
Inner Bracket
B k t SUS316 or SUS304
17160S : 160X160X5t

Roof Support FRP pipe 75A X 4t or higher

E. Outside reinforcing parts

1) Materials
Supports of hot dip galvanized steel shall be applied for corner frame and flange bars.

Location Parts Name Materials Specification

Hot dipped
Hot-dipped
Wall Panel galvanized
Flange bar 58X27X3t (mm)
Joint
(Angle type)
Hot-dipped
Wall Panel galvanized
Flat bar 40X3t (mm)
Joint
(Plate type)
Hot-dipped
Wall Panel External corner galvanized 75X75X3t (mm)
Corner frame
(Angle type)

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F. Sealant
1) PVC type material with excellent durability and restitution, hygienic and nontoxic properties,
unaffected by temperature change and with identical life span of panel
panel, with easy to handle
tape form. (Nontoxic material not affected by mold or moss)
2) Rubber packing used as sealant of bolt and inner stay assembly section, must satisfy the
regulations for waterworks (KSM 6613 type 1 no.1).
3) Long term watertightness cannot be guaranteed by the sealing method of silicone application
in the interior of the tank, and there are possibilities of mold, making it harmful to humans,
thus cannot be used.

G. Bolts and Nuts

The bolt must have the quality equal or greater than KS B 1002 regulation, and its use and
material shall be as follows.
1) For interior(water section): STS 304+Epoxy Coating
2) For exterior, substratum: M10 dacro dip + PVC bolt cap (anti-corrosion bolt cap)
3) Connection of exterior and interior: The head section of the dacro dip bolt consists of rubber
(identical to fitting assembly bolt) and rubber coated products to improve watertightness.

H. Ladder
The ladder should provided enough load resistance and solidity, and the internal ladder
should be in an assemblage structure without welding and not harmful in sanitation.
a. Internal use : GRP assemblage ladder or stainless steel 304 or higher grade.
b. External use : HDG steel or Stainless steel 304 or higher grade.

I. Ventilation
The air-vent should be in ABS or similar grade plastic material with PE mesh insect-guard.

J N
J. Nozzles
l
1) Ø50mm or below : Socket type in Brass material.
2) Ø65mm or higher : UPVC materials Flange type.

K. Level indicator
The water level gauge must consist of transparent hose so the water level can be observed
from the exterior, and must be protected from shock with a case.

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3. Construction and Field Management

A. Field inspection
p and Installation of Base Frame
1) The pad shall be developed by the demander, and the standard weight shall be at least
300mm in width and 600mm in height (including the basic frame), and the outer measurement
of the tank shall be W, L + 400mm. The leveling must be at most 1/500, with the upper surface
smooth, and the concrete strength must be at least 180kg/cm2, with finishing mortar thickness
being at most 20mm.
2) The worker must check for any problems of the pad installation,
installation and shall install hot dip
galvanized base frame.
3) After installing the base frame, check the leveling using the laser leveler, and the space
between the pad and the base frame must be supported using flat bars.

B. Panel Assembly
1) The panel can be assembled in the following order: bottom panel, side panel, and top panel.
In order to prevent water leakage, use innocuous sealing tape between the space between the
panels.
2) For regular health inspection, repair, and maintenance of the water tank, use partition panels
to divide the interior of the water tank, and it must be sealed completely in order to prevent
contamination.
3) The bottom panel of the water tank must be structured to allow complete drainage.
4) When the assembly of the water tank is complete, various types of fittings must be installed
in the set location in the blueprint.

C. Safety Management
1) Worker
W k mustt make
k sure to
t wear safety
f t clothing
l thi according
di tot the
th guidelines
id li off the
th workplace
k l
before beginning construction.
2) Worker must complete safety training when necessary, and the manager must be reside on
site as a rule and train and give orders for the safety of the workers.

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* Appendix #1 Side panel standards of tanks according to the height

ROOF PANEL : 3mm

STANDARD PANEL COMPOSITION CHART
5.0 M

4.5 M Wall
1X2 Upper
D Grad.
4.0 M 1X1.5 6mm
D Grad. 29Kg
4mm Wall
3.5 M 23Kg Middle
1X2 Upper
D Grad.
3.0 M 1X1.5 6mm
D Grad. 29Kg
1X1 1X1
4mm
23Kg C Grad. B Grad. Wall
2.5 M 7mm 8mm Middle
1X2 19.0Kg 21.0Kg
D Grad.
2.0 M 1X1.5 6mm
D Grad. 29Kg
4mm
1X1 1X1 1X1 1X1 Wall
C Grad. B Grad. A Grad. SA Grad. Middle
15M
1.5 23Kg
7
7mm 8
8mm 9
9mm 10
10mm
1X2 19.0Kg 21.0Kg 22.5Kg 24.5Kg
Lower
D Grad.
1.0 M 1X1.5 4mm
D Grad. 29Kg 1X1 1X1 1X1
1X1 1X1 1X1 1X1
4mm C Grad. SA Grad. IIA Grad.
C Grad. 23Kg
B Grad. A Grad. IA Grad. Wall
7mm 8mm 9mm 10mm 11mm 14mm
5mm 19Kg Lower
Height 19.0Kg 21.0Kg 22.5Kg 24.5Kg 28.0Kg 31.7Kg

1.0 m/H 1.5 m/H 2.0 m/H 2.5 m/H 3.0 m/H 3.5 m/H 4.0 m/H 4.5 m/H 5.0 m/H

1X1 1X1 1X1 1X1 1X1 1X1 1X1 1X1 1X1

D Grad. D Grad. D Grad. C Grad. B Grad. A Grad. SA Grad. IA Grad. IIA Grad.
BOTTOM PANEL
6mm 6mm 6mm 7mm 8mm 9mm 10mm 12mm 14mm
16.5Kg 16.5Kg 16.5Kg 18.5Kg 20.5Kg 22.5Kg 24.0Kg 27.7Kg 31.4Kg

1X1 1X1 1X1 1X1 1X1 1X1 1X1 1X1 1X1

C Grad. C Grad. C Grad. B Grad. A Grad. SA Grad. IA Grad. IIA Grad. IIIA Grad.
DRAIN PANEL 8mm 9mm 12mm 14mm 16mm
7mm 7mm 7mm 10mm
19Kg 18.5Kg 18.5Kg 21.0Kg 22.5Kg 24.5Kg 28.0Kg 31.7Kg 35.5Kg

* When you applied Insulated type, panel thickness will be added 25mm.
ex.) In case of 3mH, non-insulated bottom panel thickness is 8mm. So Insulated panel thickness will be 33mm.
* Other panels with different thickness on customer requirements are also possible
possible.
* Appendix #2 Panel thickness standards

DIVISION DIVISION
A B C A B C
ITEM SIZE CODE ITEM SIZE CODE
2*1 D 4 6 11 D 6 6.5 11
2*0.5 D 4 6 11 C 7 7.5 11
1.5*1 D 4 6 11 B 8 8.5 11
1.5*0.5 D 4 6 11 1*1 A 9 9.5 11
D 3 4 11 SA 10 10.5 11
C 7 8 11 IA 12 12.5 11
B 8 9 11 BOTTOM IIA 14 14.5 11
PANEL
A 9 10 11 D 6 6.5 11
1*1
WALL SA 10 11 11 C 7 7.5 11
PANEL
IA 12 13 11 B 8 8.5 11
IIA 14 15 11 0.5*1 A 9 9.5 11
IIIA 16 17 11 SA 10 10.5 11
C 7 8 11 IA 12 12.5 11
B 8 9 11 IIA 14 14.5 11
A 9 10 11 C 7 8 11
0.5*1
SA 10 11 11 B 8 9 11
IA 12 13 11 A 9 10 11
IIA 14 15 11 SA 10 11 11
0.93*1
E 3 3.5 6 IA 12 13 11
2*1
D 4 4 5
4.5 6 IIA 14 15 11
ROOF PARTITIO
PANEL E 3 3.5 6
1*1 N
D 4 4.5 6 PANEL

0.5*1 E 3 3.5 11 C 7 8 11
C 7 7.5 11 B 8 9 11
B 8 8.5 11 A 9 10 11
0.93*0.5
0.3*1 A 9 9.5 11 SA 10 11 11
SA 10 10.5 11 IA 12 13 11
COMMON
USE IA 12 12.5 11 IIA 14 15 11
PANEL
D 4 4 11 D 4 4 11
B 8 8 11 FLAT B 8 8 11
0.5*0.5 PANEL
0.5*1
SA 10 10 11 SA 10 10 11
IA 12 12 11 IA 12 12 11
Cover D 4 6
MANHOLE
Frame D 5 6

1. Position of A, B, C part
A part
B part

C part
(Flange part)

2.Thickness allowance : ±0.3