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Page 334
Suggested Citation:"APPENDIX E DETAILED DRAWINGS OF THE TL-5 WALL TEST INSTALLATION." National Academies of Sciences, Engineering, and Medicine. 2022. Design Guidelines for Test Level 3 through Test Level 5 Roadside Barrier Systems Placed on Mechanically Stabilized Earth Retaining Walls. Washington, DC: The National Academies Press. doi: 10.17226/26580.
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Page 334
Page 335
Suggested Citation:"APPENDIX E DETAILED DRAWINGS OF THE TL-5 WALL TEST INSTALLATION." National Academies of Sciences, Engineering, and Medicine. 2022. Design Guidelines for Test Level 3 through Test Level 5 Roadside Barrier Systems Placed on Mechanically Stabilized Earth Retaining Walls. Washington, DC: The National Academies Press. doi: 10.17226/26580.
×
Page 335
Page 336
Suggested Citation:"APPENDIX E DETAILED DRAWINGS OF THE TL-5 WALL TEST INSTALLATION." National Academies of Sciences, Engineering, and Medicine. 2022. Design Guidelines for Test Level 3 through Test Level 5 Roadside Barrier Systems Placed on Mechanically Stabilized Earth Retaining Walls. Washington, DC: The National Academies Press. doi: 10.17226/26580.
×
Page 336
Page 337
Suggested Citation:"APPENDIX E DETAILED DRAWINGS OF THE TL-5 WALL TEST INSTALLATION." National Academies of Sciences, Engineering, and Medicine. 2022. Design Guidelines for Test Level 3 through Test Level 5 Roadside Barrier Systems Placed on Mechanically Stabilized Earth Retaining Walls. Washington, DC: The National Academies Press. doi: 10.17226/26580.
×
Page 337
Page 338
Suggested Citation:"APPENDIX E DETAILED DRAWINGS OF THE TL-5 WALL TEST INSTALLATION." National Academies of Sciences, Engineering, and Medicine. 2022. Design Guidelines for Test Level 3 through Test Level 5 Roadside Barrier Systems Placed on Mechanically Stabilized Earth Retaining Walls. Washington, DC: The National Academies Press. doi: 10.17226/26580.
×
Page 338
Page 339
Suggested Citation:"APPENDIX E DETAILED DRAWINGS OF THE TL-5 WALL TEST INSTALLATION." National Academies of Sciences, Engineering, and Medicine. 2022. Design Guidelines for Test Level 3 through Test Level 5 Roadside Barrier Systems Placed on Mechanically Stabilized Earth Retaining Walls. Washington, DC: The National Academies Press. doi: 10.17226/26580.
×
Page 339
Page 340
Suggested Citation:"APPENDIX E DETAILED DRAWINGS OF THE TL-5 WALL TEST INSTALLATION." National Academies of Sciences, Engineering, and Medicine. 2022. Design Guidelines for Test Level 3 through Test Level 5 Roadside Barrier Systems Placed on Mechanically Stabilized Earth Retaining Walls. Washington, DC: The National Academies Press. doi: 10.17226/26580.
×
Page 340
Page 341
Suggested Citation:"APPENDIX E DETAILED DRAWINGS OF THE TL-5 WALL TEST INSTALLATION." National Academies of Sciences, Engineering, and Medicine. 2022. Design Guidelines for Test Level 3 through Test Level 5 Roadside Barrier Systems Placed on Mechanically Stabilized Earth Retaining Walls. Washington, DC: The National Academies Press. doi: 10.17226/26580.
×
Page 341
Page 342
Suggested Citation:"APPENDIX E DETAILED DRAWINGS OF THE TL-5 WALL TEST INSTALLATION." National Academies of Sciences, Engineering, and Medicine. 2022. Design Guidelines for Test Level 3 through Test Level 5 Roadside Barrier Systems Placed on Mechanically Stabilized Earth Retaining Walls. Washington, DC: The National Academies Press. doi: 10.17226/26580.
×
Page 342
Page 343
Suggested Citation:"APPENDIX E DETAILED DRAWINGS OF THE TL-5 WALL TEST INSTALLATION." National Academies of Sciences, Engineering, and Medicine. 2022. Design Guidelines for Test Level 3 through Test Level 5 Roadside Barrier Systems Placed on Mechanically Stabilized Earth Retaining Walls. Washington, DC: The National Academies Press. doi: 10.17226/26580.
×
Page 343
Page 344
Suggested Citation:"APPENDIX E DETAILED DRAWINGS OF THE TL-5 WALL TEST INSTALLATION." National Academies of Sciences, Engineering, and Medicine. 2022. Design Guidelines for Test Level 3 through Test Level 5 Roadside Barrier Systems Placed on Mechanically Stabilized Earth Retaining Walls. Washington, DC: The National Academies Press. doi: 10.17226/26580.
×
Page 344

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334 APPENDIX E DETAILED DRAWINGS OF THE TL-5 WALL TEST INSTALLATION Figure E.1 Elevation view of the TL-5 full-scale test installation MOMENT SLAB-2MOMENT SLAB-1 TL-5 NORTHSOUTH NORTHSOUTH3'-6" 3'-4" 6'-578" 10' 30' 30' 39'-7" 45'-1" 90'-458" GROUND LEVEL BEARING PAD IMPACT POINT 90'-414" 39'-7" 9'-6" 9'-978" 1'-3" 6" 1'-1178" PANELS 9 BARRIERS @ 15 ft EACH MOMENT SLAB-3 30' 1134" 1/2" TYP. 7'-1" 15' 6"x12" UNREINFORED CONCRETE LEVELING PAD B-1 B-2 B-3 B-4 B-5 B-6 ACCELEROMETER C-1 C-2 C-3 C-4 C-5 C-6 C-7 C-8 C-9 C-10 C-11 C-12 C-13 C-14 C-15 C-16 C-17 C-18 L-1 L-2 L-3 A B B DISPLACEMENT BARS TAPE SWITCH B-7 B-8 B-9 45° A

335 Figure E.2 Side view of the TL-5 full-scale test installation (cross section A) TAPE SWITCH 3/16" RUBBER SHIM (2 PER PANEL) 3/4" BEARING PAD 1" CHAMFER FINISHED GRADE 1" x 1" BEVEL (TYP) 3'-6" 3 4" 7'-1" 10' 3'-4" 45° 45° 1' 5' CLEAN SAND MATERIAL ROAD BASE MATERIAL ACCELEROMETER TL-5 6"x12" UNREINFORED CONCRETE LEVELING PAD LEVEL-UP CONCRETE DISPLACEMENT BARS

336 Figure E.3 Side view of the TL-5 full-scale test installation and description of the instrumentation 9'-938" 6" 3'-712" 10' 3'-4" DISPLACEMENT BARS (SEE SHEET 14) 6"x12" UNREINFORED CONCRETE LEVELING PAD TL-5 LEVEL-UP CONCRETE ACCELEROMETER TAPE SWITCH Accelerometer: 1 (in moment slab) Strain Gages: 14 (in the strips) Tape Switch: 1 (as shown) Displacement Bars: 10 (see sheet 14) Backfill: clean sand below moment slab and roadbase material from the bottom of moment slab to the finished grade 3/16" RUBBER SHIM (2 PER PANEL) 3/4" BEARING PAD 1" CHAMFER FINISHED GRADE 1" x 1" BEVEL (TYP) 3'-6" 3 4" 1' 8" 1'-8" 7'-1" 312" 2'-512" 2'-512" 1'-234"

337 Figure E.4 Side view of the TL-5 full-scale test installation (cross section B) ROAD BASE MATERIAL UNREINFORED CONCRETE BEARING PAD FINISHED GRADE 3'-6" 1' 8" 1'-8" 3'-4" 6" 6'-034"2'-6" 3"

338 Figure E.5 Location of the strain gages in the panels B-5 15' A B C D E F G H I C-7 C-8 C-9 C-10 C-11 C-12 C-13 C-14 C-15 GROUND LEVEL IMPACT POINT 9'-6" STRIP WITH 3 STRAIN GAGES ALONG ITS LENGTH (A, B and C) (7 in., 36 in. and 90 in. from panel face, respectively) 15' B-3 B-4 A B C D E F G H I A B C D E F G H I LEVEL-1 LEVEL-2 LEVEL-3 STRIP WITH 1 STRAIN GAGE (A) (7 in. from panel face) STRIP WITH 2 STRAIN GAGES ALONG ITS LENGTH (A and B) (7 in. and 36 in. from panel face, respectively)

339 Figure E.6 TL-5 barrier-moment sab system details

340 Figure E.7 Moment slab reinforcement details Note: wrap one end of dowel bars on felt paper or equivalent #11 dowel bars 8" 8" 1'-6" 1'-6" 5@12.25" 4.38" 16.75" 16.75" 20" MOMENT SLAB-2MOMENT SLAB-1 TL-5 NORTHSOUTH 30' 30' 90'-458" PANELS MOMENT SLAB-3 30'

341 a) Typical full-panel details b) Typical half-panel details Figure E.8 Details of precast concrete panels 4'-138" 9 1 16"9 116" 1'-234" 2'-434" 1'-234" 4'-412" 2'-512" 1'-534" 512" 1'-4"1'-4" 212" Typical Location of Vertical bars 1'-238" 1'-238" 4'-1014" 5'-712" CL Lifting Insert Tie Strip Inside Panel A-A AA Inside Panel 4'-138" 9 1 16"9 1 16" 1'-234" 1'-534" 512" 1'-4"1'-4" 212" 1'-238" 2'-434" 5'-712" CL Lifting Insert Tie Strip1'-2"B B-B Typical Location of Vertical bars B

342 a) Typical reinforcing strip cross section b) Strain gage location detail (SG-A) c) Strain gage location detail (SG-B) d) Strain gage location detail (SG-C) Figure E.9 Details of reinforcing strips 10' Strips Cross Section (2"x 425") 312" 2" Strain Gage Location 10' 7" 312" 7" 312" 3'-6" 7" 3'-6" Strain Gage Location 10' 7" 4'-6"3'-6" 7" 4'-6" 3'-6" Strain Gage Location 10' 7" 312"

343 Figure E.10 Location of the dynamic displacement targets. IMPACT POINT 9'-6" B-3 B-4 DYNAMIC DISPLACEMENT BAR FOR LOCATION) C-7 C-8 C-9 C-10 GROUND LEVEL 5' 3'-6" 3'-4" 9" 6" 3" 8" 8" SEE DETAIL B3 DETAIL B4 20" 8" 8" SEE DETAIL B4 DETAIL B3 #5 STEEL BAR STEEL PLATE (3"X2"X14") STEEL PLATE (3"X2"X14") #5 STEEL BAR 3" 3" 3'-934" 2'-434" 30" DETAIL B4 BARRIER JOINT

344 Figure E.11 Location of the permanent displacement targets. B-2 B-3 B-4 B-5 C-6 C-7 C-8 C-9 C-10 C-11 C-12 C-13 C-14 Note: REFLECTIVE DISPLACEMENT TARGETS (2"x1.5") (62 IN TOTAL) 1 2 3 4 5 6 25 27 63 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 28 26 29 30 32 33 31 34 35 37 38 36 39 40 42 43 41 44 45 47 48 46 49 50 52 53 51 54 55 57 58 56 59 1'-238" 3'-778" 6'-1" 10' 7'-6" 3'-6" 3'-4" 7'-6" 7 61 62 (ADHERED TO BARRIERS AND WALL PANELS)

Next: APPENDIX F CONSTRUCTION SEQUENCE OF THE TL-5 MSE WALL TEST INSTALLATION »
Design Guidelines for Test Level 3 through Test Level 5 Roadside Barrier Systems Placed on Mechanically Stabilized Earth Retaining Walls Get This Book
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 Design Guidelines for Test Level 3 through Test Level 5 Roadside Barrier Systems Placed on Mechanically Stabilized Earth Retaining Walls
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A major use of Mechanically Stabilized Earth (MSE) walls is as bridge approach embankments, where they are typically constructed with a roadside barrier system supported on the edge of the walls.

The TRB National Cooperative Highway Research Program's NCHRP Web-Only Document 326: Design Guidelines for Test Level 3 through Test Level 5 Roadside Barrier Systems Placed on Mechanically Stabilized Earth Retaining Walls is dedicated to developing guidelines for barrier-moment slab systems placed over MSE walls to resist vehicular impact loads resulting from three test levels.

Supplementary to the document is a presentation. Also, in June 2022, an erratum was posted for this publication: Table 9-4, p. 251, contained incorrect information in the Second Layer column. The table has been corrected in the Web-Only Document.

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