The rationale and processes for these two approaches are described in Sections 7.1 and 7.2
below.
7.1 Product Development
7.1.1 Objectives for Design Development
The primary objective of performance assessment and testing for a temporary or demountable
flood protection system is to determine whether the system can perform its stated function in
its stated deployment environment for a specified length of time. Testing assists in confirming
or defining the characteristics and limitations of a system, making it possible to map the
protection types to different flood risk scenarios.
Assessment testing needs to be performed or supervised by competent independent specialists
to establish confidence in the test results.
The two main issues that need to be addressed during performance tests are:
a) Protection system stability and seepage characteristics
b) Constructability.
The objective of performance testing of stability and functionality characteristics is to
determine the water retention characteristics of the system and its factor of safety against
structural stability failure under service conditions. The testing requirements should include
some or all of the following:
• Rate of seepage (through and under the barrier, including joints)
• Factors of safety against overturning, sliding, rolling and bearing capacity failure under
design loading of hydrostatic water pressure plus appropriate allowance for waves,
currents and floating objects
• Resistance to damage by impact, tear or puncture and vandalism
• Progressive deterioration of system or damage to it
• Ability to repair or strengthen system during service conditions
• Behaviour of system under loading in excess of design, particularly on overtopping and
identification of likely failure mode.
The objective of performance testing of constructability characteristics is to confirm the
operational and local site conditions required for deployment. The testing requirements would
include some or all of the following:
• Assessment of manpower, plant, materials and time required for installation and removal
of a set length and height of system (say 100m long by 1m high)
• Assessment of additional requirements for higher systems up to the maximum height
• Assessment of suitability for various bedding and terrain conditions, such as flat, sloping
and undulating terrain, rock, soil, hard, smooth and rugged surfaces
• Ease and versatility of construction along straight lines, bends, corners, joints and end
connections
• Simplicity of construction
• Required storage and transportation
• Required site preparation works and operation space.
The rationale and processes for these two approaches are described in Sections 7.1 and 7.2
below.
7.1 Product Development
7.1.1 Objectives for Design Development
The primary objective of performance assessment and testing for a temporary or demountable
flood protection system is to determine whether the system can perform its stated function in
its stated deployment environment for a specified length of time. Testing assists in confirming
or defining the characteristics and limitations of a system, making it possible to map the
protection types to different flood risk scenarios.
Assessment testing needs to be performed or supervised by competent independent specialists
to establish confidence in the test results.
The two main issues that need to be addressed during performance tests are:
a) Protection system stability and seepage characteristics
b) Constructability.
The objective of performance testing of stability and functionality characteristics is to
determine the water retention characteristics of the system and its factor of safety against
structural stability failure under service conditions. The testing requirements should include
some or all of the following:
• Rate of seepage (through and under the barrier, including joints)
• Factors of safety against overturning, sliding, rolling and bearing capacity failure under
design loading of hydrostatic water pressure plus appropriate allowance for waves,
currents and floating objects
• Resistance to damage by impact, tear or puncture and vandalism
• Progressive deterioration of system or damage to it
• Ability to repair or strengthen system during service conditions
• Behaviour of system under loading in excess of design, particularly on overtopping and
identification of likely failure mode.
The objective of performance testing of constructability characteristics is to confirm the
operational and local site conditions required for deployment. The testing requirements would
include some or all of the following:
• Assessment of manpower, plant, materials and time required for installation and removal
of a set length and height of system (say 100m long by 1m high)
• Assessment of additional requirements for higher systems up to the maximum height
• Assessment of suitability for various bedding and terrain conditions, such as flat, sloping
and undulating terrain, rock, soil, hard, smooth and rugged surfaces
• Ease and versatility of construction along straight lines, bends, corners, joints and end
connections
• Simplicity of construction
• Required storage and transportation
• Required site preparation works and operation space.
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