1.6
DESIGN AND PERFORMANCE REQUIREMENTS
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NOTE: Include this paragraph in the specifications
when the Contractor is required to furnish the
detailed design of the system.
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1.6.1
General
The contract drawings indicate the general arrangement of the hydraulic
power system for operation of the [intake gates] [slide gates] [control
gates] [tainter gates] [miter gates] [butterfly valves] [hoisting
equipment] [_____], clearances necessitated by the structure or other
equipment, maximum overall dimensions, and other pertinent features. The
Contractor shall furnish the detailed design in conformity with NFLPA
T2.24.1, and the following design criteria.
1.6.2
Design Parameters
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NOTE: List all design parameters or criteria
required by the Contractor to design the hydraulic
power system. Possible design criteria to consider
are:
a. Maximum operating pressure
b. Rated raising or retracting force
c. Rated lowering or extending force
d. Maximum raising or retracting time
e. Maximum lowering or extending time
f. Hoist stroke
g. Critical or limiting dimensions
h. Operating temperature range
i. Duty cycles
j. Any other unusual features
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The principal design parameters for the hydraulic power system are as
follows:
1.6.3
Allowable Stresses
1.6.3.1
Structural Items
Structural items associated with the hydraulic power system, such as
support beams, shall be designed to withstand the maximum force exerted by
the hydraulic cylinder plus any dead loads with a factor of safety of 2
based on the yield strength of the materials involved.
1.6.3.2
Hydraulic Cylinders
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NOTE: Telescopic hydraulic cylinders shall be used
only for special retrofit applications where regular
single or double acting cylinders cannot be used.
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The [telescopic] hydraulic cylinders shall be designed to withstand the
SECTION 15010A
Page 11
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