Internally Reinforced System
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No
Name
Material
1
Manhole panel
GRP
2
External ladder
SS400(HDG)
3
Internal ladder
GRP (Pultrusion)
4
Internal Tie Rod
STS(PET coating), STS 304, 316​
5
Internal bracket
STS(Powder coating), STS 304, 316
6
Flange bra, Flat Bar
SS400(HDG)
7
External bracket
SS400(HDG)
8
Corner bracket
SS400(HDG)
9
Bottom bracket
SS400(HDG)
10
Corner frame
No
Name
Value
11
Roof support pipe
12
Base frame
SS400(HDG)
13
Bolts and Nuts
Inside STS: Bolt/ Nut(304, 316), Washer(316)
Roof Panel: acetyl cap bolt(M10)
Outside: HDG Bolt + PVC Bolt cap
Connection: HDG + Acetyl Cap(M14)
Size: M10, M14
14
Sealing Tape
PVC Sealant + Butyl or EVA Sealant + PVC Sealant
15
Water Level Gauge
Aluminium Case+ PE Clear Tube+ Socket
16
Name Plate
Aluminium (Water Tank Safety Management Instructions)
Externally Reinforced System
No
Name
Material
1
Manhole Panel
GRP
2
External ladder
SS400(HDG)
3
Internal ladder
GRP(Pultrusion)
4
Internal Bracket
STS(Powder coating), STS304, 316
5
External Support Tie-rod
SS400 + Urethane coating
6
External Pair Frame
SS400(HDG)
7
Corner Bracket
SS400(HDG)
8
Corner Frame
SS400(HDG)
9
Roof support pipe
GRP(Pultrusion)
No
Name
Material
10
Base frame
SS400(HDG)
11
Bolts and Nuts
Inside STS: Bolt/ Nut(304, 316), Washer(316)
Roof Panel: acetyl cap bolt(M10)
Outside: HDG Bolt + PVC Bolt cap
Connection: HDG + Acetyl Cap(M14)
Size: M10, M14
12
Sealing Tape
PVC Sealant + Butyl or EVA Sealant + PVC Sealant
13
Water Level Gauge
Aluminium Case+ PE Clear Tube+ Socket
14
Name Plate
Aluminium (Water Tank Safety Management Instructions)
Strength & Durability of GRP Water Tank
Section
Design Standard
Hydrostatic Pressure
Water pressure reinforcement 4 times standard
Transformation rate in filled u with water: Less than 1% form water tank heigh
Wind force
Less than 60 m/sec
Earthquake Force
Stable and safe till magnitude 5.0 (Over magnitude 5.0, it needs additional reinforcement)
Snow Load
60 Kg/m2, Snow fall less than 30 cm
Illumination Rate
Less than 0.1%
No leakage under condition of vertical 100Kg after install of 100A fitting with 70mm span support
Water Temperature
Usable temperature: Less than 30 degree C / Limited temperature: Max 70 degree C
Water quality
Tap water, well water: chlorine below 50 mg/l
Seawater: application Externally reinforced water tank (max 3m height)
Stress analysis of GRP Panel
GRP Water tank panel is designed with special shape for maximizing safety against stress and deformation, so it has better structural strength than normal circle designed panel.
​
- As GRP Water panel is manufactured by oil-hydraulic press under high temperature and high pressure, it maintains top water pressure strength and there is no dimensional deviation by temperature change.