Span Length
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Used to calculate the following:
- Minimum
reinforcement rules for some codes.
- The upper bound on
f ps
for unbonded tendons based upon the selected
code’s criteria (these criteria often include a span length parameter).
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Tributary Length
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This creates a zone over which the reinforcement
required by the design section must be provided (development lengths, if
required, are in addition to this zone).
The zone length on the right side of the design
section is the smaller of these two values:
- TributaryLength/2.0
- (SpanRatio - 0.0) *
SpanLength
The zone length on the left side of the design
section is the smaller of these two values:
- TributaryLength/2.0
- (1.0 - SpanRatio) *
SpanLength
The intent of the span-ratio-based limit is to
restrain the reinforcement zone to within the span, even if the design section
is at the beginning or end of a span.
Note: The Visible
Objects dialog can be used to show the reinforced zone to be outlined and
hatched. The region displayed also considers all the span ratio implications.
The hatched region does not display before a calc-all.
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Span Ratio
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Determines the location of the design section
relative to supports and midspan.
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Strip Type
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(Eurocode 2 only) Determines the type of strip
defined by this design section.
The choices are:
- Col.
Strip (Full Width): Use design rules for full bay width cross
sections (generally used without middle strips).
- Col.
Strip (w/ Mid. Strips): Use design rules for partial bay width
column strips (generally used in conjunction with middle strips).
- Middle
Strip: Use design rules for partial bay width middle strips
(generally used in conjunction with column strips).
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Number of Stories for Accident Design (Eurocode 2 UK NA
only) |
This input will only be visible when the Eurocode 2-2004 (UK
Annex) is the active Design Code. It is used to determine the number of stories
that are used for accident rule set calculations for this span.
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