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07/15/2004 Env Bd Packet
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07/15/2004 Env Bd Packet
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8/5/2014 12:19:53 PM
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Environmental Board
Env Bd Document Type
Env Bd Packet
Meeting Date
07/15/2004
Env Bd Meeting Type
Regular
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100 <br />60 <br />AC <br />SAFE VIBRATION LEVELS FOP. RSSIDENTIAL STRCCTLIRZS <br />1 1 1 <br />20 -Major damage <br />v=7.6 in/sec <br />1-Minor damage <br />I 1 v=5.4 in/sec <br />10 1 <br />8 <br />WWII/NM <br />AMMON. ••••■••A <br />11•••■■••• <br />AIMIIIMEMS <br />0 <br />ea <br />1 1 <br />• <br />0 A <br />0 <br />1 <br />1 <br />111,* <br />•08 0 <br />00 arto <br />a <br />t 0 0 <br />••• 0=r I= FT •■•• <br />o <br />o OS a <br />a■.41116 <br />a <br />a ..111 op <br />• <br />• <br />dr) <br />oao <br />• <br />Damage zone <br />1111■11 MINOM .1•■••• <br />••■••■ <br />••■•• <br />— <br />..n <br />4 <br />0 <br />0 <br />A <br />• <br />Bureau of Mines <br />Longefors <br />Edwards and Northwood <br />Bureau of Mines <br />Longefors <br />Edwards and Northwood <br />ASCE-BuMines Test <br />1 1 1 - 1 <br />2. 4 6 10 <br />Safe zone <br />• <br />Safe Wasting criterion <br />• <br />• Crandall ER=3.0, v=3.3 in/sec-1 <br />Langefors v=2.8 in/sec---11 1 <br />• ti--- <br />Edwards and 1 ! <br />Northwood v=2.0 in/sec—Jr. <br />Bureau of Mines v=2.0 <br />}Major damage data <br />Minor damage data <br />1 1 1 <br />20 40 60 <br />FREQUENCY, cps <br />1 1 1 <br />100 200 400 600 1000 <br />-Particle velocity versus frequency with recommended safe blasting criterion. <br />FIGURE 6-2 <br />From Nicholls, Johnson and Duvall, 1971 <br />
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