graduation lines at interval of 0.0005; in conformity with IS-3104: 1965. <>/ExtGState<>/XObject<>/ProcSet[/PDF/Text/ImageB/ImageC/ImageI] >>/Annots[ 13 0 R] /MediaBox[ 0 0 612 792] /Contents 4 0 R/Group<>/Tabs/S/StructParents 0>> If . Plotting. Calculate the percentages of sand, silt and clay in soil sample using the following equations: % Clay = (calibrated 2-hour reading) x (100/sample weight) % Silt = (calibrated 40-second reading) x (100/sample weight)-(%clay) % Sand = 100 (%silt + % clay). If the moisture content in the soil is 20%, the degree of saturation is: The void ratio of a partially saturated soil sample is 0.5. The maximum permissible scale error on the hydrometer is plus or minus one scale division. If the temperature is below 68 F, subtract 0.2 units from the blank hydrometer reading for EACH degree below 68 F. Hydrometer test is used to determine the grain size distribution of fine-grained soils having particle size smaller than 0.075mm and if more than 10% of the soil passes the No.200 sieve. A hydrometer is a device used to measure the specific gravity of liquids. The mains exam will be held on 25th June 2023. S?{)x) CG= corrected gravityMG= measured gravityTR= temperature at time of readingTC= calibration temperature of hydrometer, CG= MG* ((1.00130346 0.000134722124 * TR+ 0.00000204052596 * TR 0.00000000232820948 * TR) / (1.00130346 0.000134722124 * TC+ 0.00000204052596 * TC 0.00000000232820948 * TC)), Tilt Digital Wireless Hydrometer And Thermometer (Red). PDF Lab. Report NO. 5 SEDIMENTATION ANALYSIS 1994-2020, W.W. Grainger, Inc. All Rights Reserved. Researching the industry norms for the process either online or via industry contacts can help you make the correct selection. 0 Instantly check the specific gravity and temperature of your brew while it's fermenting. 0000001599 00000 n Determine the temperature of your sample. The grain diameter thus can be calculated from knowledge of the distance and time of fall. This method shall not applicable if less than 10% of the material passes the 75 micron IS Sieve. Corrections for 151H hydrometers should be entered as the number of thousands; e.g., 6.0 instead of .006. Rc2 = R(actual) - Zero correction + Ct 100 where ms = 50 g where F200 = 7.06%; Question: Hydrometer test data analysis: a= 1 for Gs=2,65 Zero . after periods of 1/2, 1, 2 and 4 minutes. the hydrometer method persists in many industries. The temperature correction is approximated as F t = -4.85 + 0.25 T (for T between 15 o C to 28 o C) Reports. PDF Method of Test for Mechanical Analysis of Soils gglRlf.?v!on/n?~{_m_;oF^\_|6Gl>{?n/X|wJh72^g..mFzZw_{5|7?Ooo]sg^#~wnW}IIkMd#kojpbmh:Zs$Ah&:ueO+6Py&R7 2SNo{J{;vDDTH0~cj7Ye40c1kCpC~F4m }o: oX>{#gc_Y#x_KlG2N%>8q|6Y?;N!ie2Rwf6Ufeg[MQ`Ec``aX#C_l3a% M/}/u%}}V >X X]-Bb A kch`|[#]&hRX~ ';u4-4`{6ims=}{~&p_6NE=;Ntu>aac`kdg$NK2!_u>l,g\Ouj0:rcB>(2n@k4X{;D;Not_Yf$ie|a(@~5Qg`e*L;Id_8")c$['9a\d"A[ODQkEpR71h(qh~\.gCzl:8N)% 3c~ji.7 `y2N:W//OzSW[Jl};x3Il'eG)rK(lEiXiV(iEGhF&R\m,q~659k[cl{462f=8P1a"[o13g%G)$ovNMlP}:]"8OEw3nw6:b+L=|z+.5A,oN4DS8'>Q5}>iW; 1 0 obj Clay sized particles (less than 0.002 mm) are small enough to remain in suspension indefinitely. Hydrometer analysis is essential for obtaining the complete particle size distribution of such soils. 0 Remove the hydrometer, rinse it clean, wipe dry, and put it back in its protective case.
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