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ψ ed , Na
= 0.7 + 0.3
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c a , min ≤1 . 0
c Na
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17.6.5.4.1 Modification factor for edge effects for single adhesive anchors or adhesive anchor groups in tension , ψ ed , Na
, shall be determined by ( a ) or ( b ) using the critical distance c Na as defined in Eq . ( 17.6.5.1.2b )
( a ) If c a , min ≥ c Na
, then ψ ed , Na = 1.0 ( 17.6.5.4.1a )
( b ) If c a , min < c Na
, c a , min ( 17 . 6 . 5 . 4 . 1b )
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ψ ed , Na is a modification factor that is used to account for fixed edge distances less than c Na
, where c Na corresponds to a projected distance from the center of the adhesive anchor element being modeled in PROFIS Engineering . The illustration below shows how the assumed area of influence ( A Na
) would be defined for an adhesive anchoring application being modeled with two fixed edges ( c a1 and c a2
) that are both less than c Na , and with c a1 being less than c a2
. The smallest edge distance ( ca1 ) corresponds to the parameter ca , min , and would be used to calculate the modification factor ψ ed , Na
.
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then ψ ed , Na = 0.7 + 0.3 |
c Na
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ψ ed , Na
= 0.7 + 0.3 ( c a1 / c Na
)
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Reference the Variables section of the PROFIS Engineering report for more information on the following parameter :
c a , min
: parameter for the smallest fixed edge being modeled .
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Reference the Calculations section of the PROFIS Engineering report for more information on the following parameter :
c Na
: projected distance from an adhesive anchor .
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