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Ingalls Engineering flexfence 30/11/07 Manual de usuario Pagina 10

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Ingal Civil Products
page 10
Release 002
Flexfence
APPENDIX A: RECOMMENDED DYNAMIC
DEFLECTION DESIGN
MULTIPLYING FACTORS FOR
WIRE ROPE BARRIERS
Table 3: Curve and length factors for cable barriers
Barrier
Degree of Curvature (Degrees)
Length 0.0
o
0.5
o
1.0
o
1.5
o
2.0
o
2.5
o
3.0
o
3.5
o
4.0
o
(metres) 3,500m 1,750m 1,164m 874m 700m 582m 500m 437m
radius radius radius radius radius radius radius radius
30 0.85 0.88 0.89 0.91 0.91 0.93 0.95 0.97 0.99
60 0.96 0.98 1.01 1.05 1.08 1.12 1.17 1.21 1.26
90 1.00 1.06 1.11 1.14 1.17 1.23 1.28 1.33 1.39
120 1.08 1.11 1.17 1.21 1.29 1.32 1.35 1.48 1.55
150 1.11 1.16 1.20 1.25 1.34 1.38 1.49 1.56 1.68
180 1.14 1.19 1.25 1.30 1.38 1.49 1.57 1.69 1.77
210 1.17 1.20 1.28 1.38 1.46 1.53 1.66 1.74 1.84
240 1.18 1.21 1.35 1.42 1.50 1.57 1.70 1.80 1.91
270 1.18 1.28 1.35 1.43 1.51 1.62 1.75 1.84 1.98
300 1.18 1.29 1.37 1.45 1.57 1.67 1.77 1.88 2.12
330 1.18 1.30 1.37 1.46 1.59 1.71 1.81 1.95 2.18
360 1.19 1.30 1.39 1.48 1.62 1.74 1.86 2.01 2.24
390 1.19 1.30 1.39 1.49 1.64 1.76 1.90 2.07 2.42
420 1.19 1.30 1.41 1.50 1.66 1.80 1.95 2.23 2.50
450 1.19 1.30 1.43 1.50 1.69 1.83 2.00 2.26 2.54
The factors presented in Table 3 show the diminishing increase in barrier defl ection as barrier length increases. The extent of the
increased defl ection presented is signifi cant and must be taken into account when selecting and locating a cable barrier system.
The factors have been adopted from a paper written by Alberson, Bligh, Buth and Bullard (January 2003) presented to the
Transportation Research Board in Washington D.C.
Flexfence Pro Man.indd 10Flexfence Pro Man.indd 10 30/11/07 10:46:44 AM30/11/07 10:46:44 AM
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