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الحود هلل الخالق األكزم ، *"علَّن اإلًساى هالن يعلْن * الذى علَّن بالقلن "
والصالة والسالم علي رسول هللا، وعلي آله وصحبه، وهي وااله
Dr. Alaa Helba
عالء حلبــــــــــــة.د
A Guide to Designing Reinforced Concrete Water Tanks
Helba AlaaDr.
Mar-16
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Course introduction.
Different Types and Shapes of Water Tanks.
Precautions for Construction of water tanks.
Structural Elements of Water Tanks
Outline of Lecture 1
INTRODUCTION
• Water Tanks and liquid containing structures are Special structures .
• For their structural elements: Sections with tension at the liquid side should be designed as uncracked sections .
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Circular R.C. Tank Rectangular R.C. Tank
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Circular R.C. Tank (Cylindrical over Conical shape)
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Spherical R.C. Water Tank
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Rectangular Circular
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2- Ground tanks
Section Elevation
G . L D
Ground tanks
G . L D
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Ground tanks
Section Elevation
G . L D
3- Underground tanks
G . L
Section Elevation
G . L
Section Elevation
D L1 x L2
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Underground with central column support
Underground with Dome Roof
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Circular Rectangular Regular shape
D
L1
L2
L
D
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1- Water tightness Production of Water-tight Concrete
To get: Use
- high quality - Impermeable - Dense - crack-free - no honeycombing
concrete.
- well graded aggregates
- low w/c ratio - sufficient cement content - mechanical mixing - mechanical compaction (vibration) - curing of concrete.
2- Crack-free (or Uncracked) Sections No cracks at the liquid sides (design
uncracked sections) Satisfy the S.L.S requirements for
cracking width according to code 203/2007 clause 4-3-2.
Satisfy the strength requirement using U.S.L.S (calculate the required steel rft.)
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Roof slab
Wall
Floor slab
Top of foundation
Elevated tank
Components: Tower supp. Sys.
Structural Elements of Water Tanks Roof slab
Walls
Floor slab
Components of Elevated tank
Components:
Tower supp. Sys.
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ELEVATED WATER TANK
Roof Slab
Floor Slab
Cylindrical Wall
R.C. Shaft
Structural Elements of Water Tanks
Roof Slab
Floor Slab
Rectangular Walls
ELEVATED TANKS
ELEVATED TANK
Structural Elements of Water Tanks
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GROUND WATER TANK
Ground TANK
Structural Elements of Water Tanks
Structural Elements of R.C. Water Tanks
Components:
• Roof slab
• R.C. Walls
• Floor slab
• Tower supp. Sys.
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