Laserfiche WebLink
y <br /> - <br /> v <br /> i c�e. - •nd — r s <br /> California Test 301 <br /> 1478 <br /> H.HAZARDS Exampler <br /> 11'i1r:n ricking up both the stabilorncter and sl:,,qv T,-,rs7H•rmejo <br /> base together,make sure that the lock shoe rnt the i'au•r,,ru•:;!rrli,, Iso 1.,T, Im <br /> rvfu;r„dc,r I If,, .,. .... 2R "-p 20 <br /> Eottmnl of the stabilonleter shell is in position n <br /> to pre• aao-r.d d.:I. , ." ;y <br /> r _,.111 the base from -Slipping . ' a� . ss Lc, <br /> rdie,l.burnt —,SSI —,.61 <br /> ahold 20 pounds and could cause serious injury if it !-U �=t2 <br /> ilais}.,r.iwm�"�tl�rn -._. P,SE.:I 24.E/.Se ICU <br /> e alt tilt:operator's font. It is good rncticc whorl <br /> = :RtL=5r <br /> r Ih.,.`.I,erl.rs ... ;u 215 ,W - <br /> carrying the entire assembly to grip it by thr brolrze KtERr,!s,:r; _ .. . ._.... . 1sEs I.Es Ln <br /> adjusting nut on the stare base. u"„n Ie rI Ix <br /> PART VI. METHOD OF CALCULATING THE <br /> DENSITIES OF R-VALUE TEST SPECIMENS R. NOTES <br /> A.TEST AND CALCULATIONS The acc.I;racy of this method of colrirtating densi- <br /> ties is r:ependen' upon Ile amount of wales r lost by <br /> 1.The 111c•:lsurements Of the height and veight of evaporation during the test procedure.'I herefore,it <br /> the test specimen necessaryfor the density detenni- is extremely important that every precaution be <br /> nation are made during the performance of the used to prevent such losses. For example, all cans <br /> method for the determination of exudation pressure used for honking samples should have light seams. <br /> of H-value test hpocimens according to Part III of this Solder the seam if necessary. <br /> test method. <br /> 2. The steps involved in the densi!y calculations <br /> are as follows: <br /> Total moisture content at compaction PART VII. METHOD OF CALCULATING THE <br /> R-VALUE OF A MATERIAL BY THE <br /> •11=-tl, + M2 STABILOMETER AND EXPANSION <br /> 1/,_ Initial moisture content, percent PRESSURE <br /> -112= Percent moisture added <br /> (Equation #2) A. SCOPE <br /> 11:= %Y (100 + -ll,)/IV, This part of the procedure describes the method <br /> 11'— Water added in milliliters for determining the 11-value of a material from (A) <br /> II', = Original batch weight in gra ulsofsoiI includ- the exudation pressure and (I3) the expansion pres- <br /> ing initial moisture (1,200 grams) sure of the material. <br /> (Equation #3) <br /> (Density) D 30.3 1V,/(100 + -tl) H in lb. B.R-VALUE BY EXUDATION PRESSURE METHOD: <br /> per cu. ft. dry wt. 1. Use back of.work card, Form T.L.-361, for re- <br /> 111-2=.Wvt weight in grants of test specimen after cording results of calculations (Figure 18). <br /> compaction prior to addition of .water for 2. Plot the R-value of the three specimens against <br /> expausian pressrlrC test.'rile molds must be their respective exudation pressures.Draw a smooth <br /> tared and.weighed with the specimens. curve through the plotted points.The R-value where <br /> II= Height of specimen in inches and is normally this curve cros:.cs 300 psi exudation pressure is the <br /> measured on an exp:utsinn pressure de.icc R-value by exudation pressure (H-valve of 31 in ex- <br /> as described in Part IN-13-7. ample). <br /> 20 <br />