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From page 113... ... 113 After validation of the modified 1100C vehicle, it was necessary to rerun the MASH-2016 Test 3-10 simulations that were conducted under Chapter 2. All systems for the concrete postand-beam, deck-mounted metal post-and-beam, and curb-mounted metal post-and-beam configurations were impacted with the 1100C vehicle model, which included wheel and suspension failure. Read the entire page →
From page 114... ... Bridge Rail System Post Setback Distance (in.) Vertical Clear Opening (in.) Read the entire page →
From page 115... ... Bridge Rail System Post Setback Distance (in.) 1st Vertical Clear Opening (in.) Read the entire page →
From page 116... ... Bridge Rail System Post Setback Distance (in.) 1st Vertical Clear Opening (in.) Read the entire page →
From page 117... ... Final Evaluation of AASHTO Geometric Curves 117 0 2 4 6 8 10 12 14 16 0 2 4 6 8 10 12 14 V er tic al C le ar O pe ni ng (i n. Read the entire page →
From page 118... ... 118 Evaluation of Bridge Rail Systems to Confirm AASHTO MASH Compliance 0 2 4 6 8 10 12 14 16 0 2 4 6 8 10 12 14 V er tic al C le ar O pe ni ng (i n. Read the entire page →
From page 119... ... Final Evaluation of AASHTO Geometric Curves 119 0 2 4 6 8 10 12 14 16 0 2 4 6 8 10 12 14 V er tic al C le ar O pe ni ng (i n. Read the entire page →
From page 120... ... 120 Evaluation of Bridge Rail Systems to Confirm AASHTO MASH Compliance 0 2 4 6 8 10 12 14 16 0 2 4 6 8 10 12 14 V er tic al C le ar O pe ni ng (i n. Read the entire page →
From page 121... ... Final Evaluation of AASHTO Geometric Curves 121 0 2 4 6 8 10 12 14 16 0 2 4 6 8 10 12 14 V er tic al C le ar O pe ni ng (i n. Read the entire page →
From page 122... ... 122 Evaluation of Bridge Rail Systems to Confirm AASHTO MASH Compliance 0 2 4 6 8 10 12 14 16 0 2 4 6 8 10 12 14 V er tic al C le ar O pe ni ng (i n. Read the entire page →
From page 123... ... Final Evaluation of AASHTO Geometric Curves 123 Figures 5.13 and 5.14 show the results for the parapet-mounted metal post-and-beam bridge rail Test 3-10 simulations. None of the simulations resulted in occupant risk metrics exceeding the MASH-2016 limits. Read the entire page →
From page 124... ... 124 Evaluation of Bridge Rail Systems to Confirm AASHTO MASH Compliance 0 2 4 6 8 10 12 14 16 0 2 4 6 8 10 12 14 V er tic al C le ar O pe ni ng (i n. Read the entire page →
From page 125... ... Final Evaluation of AASHTO Geometric Curves 125 Based on the simulation results, the AASHTO LRFD Section 13 geometric curves can be considered acceptable in their current format for MASH-2016 evaluation criteria. Rerunning the Test 3-10 simulations with the modified 1100C vehicle model resulted in no simulations with occupant risk values exceeding the MASH limit. Read the entire page →
From page 126... ... 126 Evaluation of Bridge Rail Systems to Confirm AASHTO MASH Compliance 0.00 2.00 4.00 6.00 8.00 10.00 12.00 14.00 16.00 18.00 20.00 0.00 2.00 4.00 6.00 8.00 10.00 12.00 14.00 V er tic al C le ar O pe ni ng (i n. Read the entire page →
From page 127... ... Final Evaluation of AASHTO Geometric Curves 127 0 2 4 6 8 10 12 14 16 18 20 0 2 4 6 8 10 12 14 V er tic al C le ar O pe ni ng (i n. Read the entire page →
From page 128... ... 128 Evaluation of Bridge Rail Systems to Confirm AASHTO MASH Compliance 0 2 4 6 8 10 12 14 16 18 20 0 2 4 6 8 10 12 14 V er tic al C le ar O pe ni ng (i n. Read the entire page →
From page 129... ... Final Evaluation of AASHTO Geometric Curves 129 0 2 4 6 8 10 12 14 16 0 2 4 6 8 10 12 14 V er tic al C le ar O pe ni ng (i n. Read the entire page →
From page 130... ... 130 Evaluation of Bridge Rail Systems to Confirm AASHTO MASH Compliance figures as a reference point. These bridge rail configurations included concrete post-and-beam, deck-mounted metal post-and-beam, and curb-mounted metal post-and-beam systems. Read the entire page →
From page 131... ... Final Evaluation of AASHTO Geometric Curves 131 below the proposed curve were not considered. The geometrics for these systems would not be representative of a practical bridge rail system. Read the entire page →
From page 132... ... 132 Evaluation of Bridge Rail Systems to Confirm AASHTO MASH Compliance Assessment of NCHRP Project 20-07 Marginal Bridge Rail Systems In Silvestri-Dobrovolny et al. Read the entire page →
From page 133... ... Final Evaluation of AASHTO Geometric Curves 133 systems plotted on the new geometric curves. Using the new recommended geometric curves, the following bridge rail systems should receive a satisfactory rating based on their geometrics: • Two-tube railing 36d (Wyoming) Read the entire page →

From page 113...

... 113 After validation of the modified 1100C vehicle, it was necessary to rerun the MASH-2016 Test 3-10 simulations that were conducted under Chapter 2. All systems for the concrete postand-beam, deck-mounted metal post-and-beam, and curb-mounted metal post-and-beam configurations were impacted with the 1100C vehicle model, which included wheel and suspension failure.