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D 3385 je fl�em��c �M /19TS PMl;';J� jarirl-oca��ennSO/IHO-lno;QilR,✓/l//�A�uQem�//ar�cs� /- .*aid uf'LdI evrrrnJe•v Fli- J?0 ;Ave./'--'Y.' /'6.0 .CfKe - 1yy.' / fil�n3oll7N�S�L�'I4�l�li'' Y6" ' _ 50"/Rrdi/- ' 779 res# - 7=7- dscnd, ✓f 4e '� ^Anu/wr �Paca �f $•,raif�4 dry ' i W4 AYed -* - - -- -- - g L — L ' I Il. i J of 1 i r - E/a"Sed //1Md-Jtl. M/�. FIG.4 Report Form for Infiltration Test With Semple Data center of the ring with the rubber mallet, as slight tamping 8.6.2 When manually controlling the flow of liquid,a depth "M vibrations will reduce hang-ups and tilting of the ring. gage is required to assist the investigator visually in maintain- 8.4.3 Add additional weight to the truck if needed to ing a constant head. Use a depth gage such as a steel tape or 'Clop sufficient force to drive the ring. rule for soils having a relatively high permeability; for soils ..;.44 Check the rings with the level,correcting the attitude having a relatively low permeability use a hook gage or simple f the rings to be vertical, as needed. point gage. 8.5 Tamping Disturbed Soil: 8.6.3 Install the depth gages,constant-level valves,or Mari- I 3.5.1 If the surface of the soil surrounding the wall of the otte tubes as shown in Fig. 2, and in such a manner that the k ft(s) is excessively disturbed (signs of extensive cracking, reference head will be at least 25 mm (1 in.) and not greater t xcessive heave, and the like), reset the ring(s) using a than 150 nun. (6 in.). Select the head on the basis of the hnique that will minimize such disturbance. permeability of the soil, the higher heads being required for f 3.5.2 If the surface of the soil surrounding the wall of the lower permeability soils. Locate the depth gages near the mg(s) is only slightly disturbed, tamp the disturbed soil center of the center ring and midway between the two rings. diacent to the inside and outside wall of the ring(s) until the 8.6.4 Cover the soil surface within the center ring and I is as firm as it was prior to disturbance. between the two rings with splash guards (150-mm (6-in.) f w-8.6 Maintaining Liquid Level: square pieces of burlap or rubber sheet) to prevent erosion of 8.6.1 There are basically three ways to maintain a constant the soil when the initial liquid supply is poured into the rings. ad (liquid level) within the inner ring and annular space 8.6.5 Use a pail to fill both rings with liquid to the same ` tween the two rings: manually controlling the flow of liquid, desired depth in each ring. Do not record this initial volume of [ Tie use of constant-level float valves, or the use of a Mariotte liquid. Remove the splash guards. { rube. 8.6.6 Start flow of fluid from the graduated cylinders or €- €' r 375