The National Academies Press

Currently Skimming:

Pages 6-27

The Chapter Skim interface presents what we've algorithmically identified as the most significant single chunk of text within every page in the chapter.
Select key terms on the right to highlight them within pages of the chapter.

From page 6... ... 6 CHAPTER 2 – A SUMMARY OF COMMON NONPROPRIETARY GUARDRAILS (BASIC DESIGN AND CRASH PERFORMANCE) Crash Testing for Federal Aid Eligibility Full-scale crash testing is the method used by the Federal Highway Administration to ensure that a barrier system is crashworthy for use on federally funded highways. Read the entire page →
From page 7... ... 7 Table 2. NCHRP Report 350 and MASH TL-3 for Guardrail. Read the entire page →
From page 8... ... 8 Figure 1. Modified G4(1S) Read the entire page →
From page 9... ... 9 Figure 5. Drawing of the strong-post w-beam guardrail (SGR04a-c) Read the entire page →
From page 10... ... 10 Figure 6. Drawing of the 8-inch wood blockout for the modified G4(1S) Read the entire page →
From page 11... ... 11 Figure 7. Drawing of the W6x9 guardrail post (PWE01) Read the entire page →
From page 12... ... 12 Figure 8. Drawing of the bolt used to fasten the rail element to guardrail posts. Read the entire page →
From page 14... ... 14 The G4(2W) was also tested (Test RF476460-1-5) Read the entire page →
From page 16... ... 16 Figure 13. Photo of the MGS guardrail system. Read the entire page →
From page 17... ... 17 Figure 15. Test MGSDF-1 of the MGS guardrail with 7.25-inch diameter Douglas Fir posts. Read the entire page →
From page 18... ... 18 Figure 17. Photo of the standard thrie-beam guardrail (G9; SGR09a) Read the entire page →
From page 19... ... 19 Figure 19. AASHTO-AGC-ARTBA drawings for the SGR09 guardrail systems. Read the entire page →
From page 20... ... 20 Figure 20. AASHTO-AGC-ARTBA drawings for the W6x9 steel blockout for the G9 thriebeam guardrail.[AASHTO04] Read the entire page →
From page 21... ... 21 Thrie-Beam Guardrail with Wood Blockouts The thrie-beam guardrail with wood blockouts is constructed with 6.5-ft long W6x9 steel guardrail posts spaced at 6 feet- 3 inches center-to-center; the 12-gauge w-beam rail is offset 8 inches from the posts using a 22 inches long 6x8-inch routed wood blockout. The top of the thrie-beam rail is 32.5 inches above grade and the bottom of the rail is 12.5 inches above grade. Read the entire page →
From page 22... ... 22 inch diameter button-head guardrail bolts (FBB02) Read the entire page →
From page 23... ... 23 snapshots from the crash test video is shown in Figure 13. The system was also successfully crash tested on June 12, 1998 at the Texas Transportation Institute with the 18,000-lb single unit truck according to NCHRP Report 350 Test 4-12 test conditions.[Buth99c] Read the entire page →
From page 24... ... 24 Figure 26. AASHTO-AGC-ARTBA drawings for the M14x17.2 steel blockout for the modified thrie-beam guardrail.[AASHTO04] Read the entire page →
From page 25... ... 25 Table 3. Summary of guardrail systems that have been full-scale crash tested under TL-3 conditions. Read the entire page →
From page 26... ... 26 Table 4. Summary of full-scale test results on guardrail systems tested under TL-3 conditions. Read the entire page →
From page 27... ... 27 Figure 27. Low-speed Test C08C3-027.1 on the modified G4(1S) Read the entire page →

From page 6...

... 6 CHAPTER 2 – A SUMMARY OF COMMON NONPROPRIETARY GUARDRAILS (BASIC DESIGN AND CRASH PERFORMANCE) Crash Testing for Federal Aid Eligibility Full-scale crash testing is the method used by the Federal Highway Administration to ensure that a barrier system is crashworthy for use on federally funded highways.