"�̔!cB��� �����9���¢�9�Ԓ���OR`�d�Jë��s�HjQ��{� y�ե�a�)��<7��/�z�Ma-ūڴ:UU�~�4�׹:7�V�P>H�*ǁ|;��? <<775B5989EA222C46B87E81B77D7939A7>]/Prev 618933/XRefStm 1483>> 564 0 obj <> endobj 0 trailer <> 0000084571 00000 n {7���Z������HY�m6����IFh]�U��h�l�0�y����IUdo�F||�[����J=Z�_����y�u���r���W�MNj��s�����w����@�t��@b����95� A��W�I�[^�:��"44��n����(���7�?l���1����2կ� .p���1:�AcҒ�����L��>u�:�q J���4aܽ;�B�P 0��猹�_y �Q�5b ���� � �=�s�K-==��a�}&. Where regular maintenance is to be relied on, suitable access must be included in the soakaway detailed design to ensure that the Infiltration Rate of the Soil is appropriate to the conditions. As soils become wet, infiltration rate slows to a steady rate 0000229208 00000 n Minimum Soil Infiltration Rates. 3�7�@�]�e�,q�ۓd���35�g��� endstream 0000168901 00000 n 0000046938 00000 n What is soil porosity 7. <> � ���p�2�1�� Ҽ̿��6�`� c�A��ʐ���+�f�3��ixu �7g��� �30J ]j� 26 0 obj Time-series plots were generated for all of the sites. Set alert. ��V�7�ٹ=8� Yv~3y3�sO'��u�CDR 0000002279 00000 n endobj 0000007108 00000 n 0000002071 00000 n 12 0 obj endobj What is soil storage 6. G.J. /Resources <> endobj 0000005379 00000 n 0000110816 00000 n What is capillarity? This is due to the voids within the soil becoming blocked by fines and sediment carried by the incoming water. h�b```b``�d`e`��ef@ a����N:�/`~�{ÀPn��;OP�H� �I�:Uf�h���QT�vٝ����\��T�6�\:��F�v�9�����j�6����M�i��0:#��R�6���Q �� _D\�I�O[Ť����VPP�ؽ�����r$�� ��w#B���� �W`O�,���@�Qeb`l�����Ȑ����h�p��� ���]�T;> a�����L�0ʻ8}������:�;g�Ⱥj%f��� 0000003983 00000 n Soil type and thickness affect runoff and streamflow. 0000010457 00000 n %���� c�B l��|>��uί?��ܺ��O2F�~x�]���Gׁ˛ �#$z�dK c�@�gw��W0+ &A�{N�R�=K�,���]�K����W��u�˙%�ט� f���x��M��� G�x�k%���X4z�Zp� ��U�!r� yi�#w!U"Zh�5�z�)Q��J�bˌ���v%�ԯl�V��n�kI$�-'r^*������N�|��ѐ�{~_���� �?�����B���ы��!N{�exIK The test procedure is outlined here. 0000011197 00000 n endobj 0000014270 00000 n 0000110792 00000 n 11 0 obj endstream endobj 575 0 obj <> endobj 576 0 obj <>stream 21 0 obj <>>> 0000003709 00000 n 0000001831 00000 n h�bb�f`b``Ń3� ���ţ�1����` �? NSSH Exhibit 618-9 Infiltration Rates: P bilit Ksat for general soil texture groups Soil Properties Permeability Texture Classes Rate In/Hr Rate um s-1 Low Rv High Low Rv High S, Gr Very rapid 20.00 60.0000 100.00 >141.00141 >141.00 LS FSLS, FS Rapid 6.0000 13.0000 20.0000 42.0000 91.5000 141.0000 LFS, FSL, SL Moderately rapid <> the infiltration rate - apply infiltration indices to calculate the depth (amount) of runoff generated from a rainfall •Flow of water through soil surface •Important in hydrology as it influences the runoff, transpiration, evaporation. 1 0 obj 20 0 obj 0000013217 00000 n endobj endobj 0000168993 00000 n 0000168969 00000 n Infiltration capacity the maximum rate at which a soil in any given condition is capable of absorbing water. <> �թ�����_�g���� The performance of the soakaway depends largely on the infiltration rate of the surrounding soils. What quantities control infiltration rate? 2 0 obj endstream endobj 44 0 obj <. endobj 0000139663 00000 n ?܆�O��nr�^�&�R�/��D���^�M��N��4��?�Ct�|�$��x�:�Uw�Y�H�ڕ�Xg�k��n�a�S�����͋E�I���yżB�0o���[�������9J�����y�\0Ȟ�#� 怬̊l̆L�����a�4{�=�fO�������6�M`�6�M`�6�M`�6�M`�6�G��P�C�M`�[@�=�@O�'�� �x ��y� \o�z��U�WY_Q_Y_Q_Y_Q_Y_Q_�^�z�s)�R�W�^弊y��B�,�� �}P�A�E�}P�AiV��=1���7��~���7��~���7��~���7��~���7��~�������<3�+a�͛���[�}���6�i[ϯ�y?c'�]�|����(|�� �1 18 0 obj ŏuU�jېR*ż5}i6�n\!#QJ����5��7Ƃl>~�{iZ\�|�T��ք�������R�K�}}����^�A���THI�]�Uph3���B~N/�B��2�3��$��?�S��9�}��V��I�w)��&��|�x��05�h��,��c�qhJs���H=擓�� "��=�y�V�҅-ƾ���B'�{�$^ߦƚ�4���̅vcm��������x2��G|�lS�M��~�X�����t/�L�Œ��B��m�9D�j��8Ӗ� ��L8�&"�z,�ڴ����xhv�����GBS�fW7>TLΒ��Z�)��27~2%#>�x��q䥪G�����n����w�/���� h�b```b``�������� ̀ �@16� @���K��֊Ve���������6�C���y���Vi�z�60tz��ݦ��M�%J���L�ʲ����M���u9�4��49il8c⥹���u��F}�o�X�w�=0�GaB�Ɔ#�fMO�z���Ѳ��}9]��R��b��R�8��RH�������).�q�GJWԕ��� p���Ky �$4���QPPH�U�FA���c�|�Հ��^�A���!�ACAzw�Pȏ!�!�A�A�����LN�On(> ����C�#�Í�E�d�W1sh홦�%DZ7hM}f�.�\�\G���~�`�`V��U�ߐ� � ��t�C / 㝉���aBë@�wW?X���#@� �꜕ 0000008049 00000 n It is an expression of several factors, including infiltration and percolation. %PDF-1.4 %���� This spreadsheet uses the Manning formula to calculate the flow conditions in a circular pipe acting under gravity only. 0000223998 00000 n 0000001191 00000 n 0000001116 00000 n x���[��0�� ��(-]e$ٖ !�����^}���M�D�ة�4��W�&{�CK7��1���40� ���n|{ 8���~�2D�B�%���a���0�|�aކ��c3&e���8��a Wwc�gJ������`�����]��a��iZA�If�SdVt�t6��Y�!܄��!b�F�`�>�&��k�M�=�R京7P��\��&�s�n�[4�'�^��$��1ikSB�n Infiltration is the downward entry of water into the soil. Typical values for the Infiltration Rate of Soils are given below; The large range of values given above for the Infiltration Rate of Soils illustrates the need for field testing. 0000164492 00000 n %PDF-1.3 %���� 0000001626 00000 n 0000006079 00000 n Soil. endobj velocity is equivalent to the infiltration rate. 0000045274 00000 n 0000037848 00000 n 0000005001 00000 n 0000003948 00000 n This spreadsheet uses the Manning formula to calculate the flow conditions in an open channel acting under gravity only. ����4�L�MoX��0.2:�n�@���&� �?w��e20�њq�h&�eP�F��ih�i��>�V��W���H����. 0000083282 00000 n g�M�D����Y�N[�N�N��h���D�O���8���W� The soil vegetation, soil types, its texture and structure and land cover or land use, moisture content of soil, soil temperature, and rainfall intensity all play a role in infiltration rate. 0000166726 00000 n endobj 221 0 obj << /Linearized 1 /O 223 /H [ 1267 586 ] /L 1375749 /E 234279 /N 20 /T 1371210 >> endobj xref 221 42 0000000016 00000 n 0000002992 00000 n endobj /Tabs /S endobj <> %%EOF <<4B48763AEBAD2248947F8A9EEA3D3345>]/Prev 757118>> This spreadsheet calculates the maximum flow from a specified linear drainage channel and checks whether the channel is sufficient for the specified site and storm conditions. 6 0 obj endstream startxref 0000139869 00000 n endobj This factor of safety should take into account the consequences of any failure of the soakaway and the size of the catchment area. 0000012302 00000 n 0000167495 00000 n 598 0 obj <>stream H�\��n�0��y��C��i%�4�V���(1�Q��~6�:i��_;�'*�c�IG�ah*�t�9pn�A}�k��&Ѷk��l�7}�UD��. <> <> trailer endobj 0000001879 00000 n This can be reduced if a robust system of maintenance or pre-treating the incoming water can be guaranteed for the lifetime of the soakaway. 0000010411 00000 n 4 0 obj Full drainage design suite (50% Discount) including 7 spreadsheets. is an unconsolidated aggregate of mineral and rock fragments ranging in size from clay, silt, sand, to gravel. stream endobj 0000006095 00000 n ����l�=����w��FR�iV ɐl�EY�f����j��?f� ��˫�j�x�EUAZIk�hby1NJ=��ÿ_�_�-e�T������3B�nYU��fU���m;�Um�s��ﯿ�t�'�.�r%��y��^-���*�R�;��P�H%�v���y/sW�����m�k�����ײCZ�6��CG endstream endobj 565 0 obj <>/Metadata 54 0 R/Names 566 0 R/Outlines 30 0 R/PageLayout/OneColumn/Pages 51 0 R/StructTreeRoot 56 0 R/Type/Catalog>> endobj 566 0 obj <> endobj 567 0 obj <>/ExtGState<>/Font<>/XObject<>>>/Rotate 0/StructParents 0/Type/Page>> endobj 568 0 obj <> endobj 569 0 obj <> endobj 570 0 obj <> endobj 571 0 obj [/ICCBased 592 0 R] endobj 572 0 obj <> endobj 573 0 obj <> endobj 574 0 obj <>stream [ 20 0 R] The infiltration rate is the velocity or speed at which water enters into the soil. <> Soil type Steady-state infiltration rate (in/hr) Sand >0.8 Sandy and silty soils 0.4-0.8 Loam 0.2-0.4 Clayey soils 0.04-0.2 Sodic clayey soils <0.04 Infiltration rate in soil science is a measure of the rate at which soil is able to absorb rainfall or irrigation. Intake Rate Intake rate is a measure of soil's capacity to absorb irrigation water from the surface, and move it into and through the soil profile. 0000010510 00000 n 0000028879 00000 n 0000165451 00000 n Guidance on the magnitude of this factor of safety on the Infiltration rate of Soils is given below. 0000000016 00000 n 0000001853 00000 n <> The above Infiltration Rate of Soils values will be suitable for an initial or feasibility design, but detailed design must always take place based on site testing. 0000005436 00000 n 0000009331 00000 n 0000010238 00000 n x��ko�F�~?��Ls|E�$�.����~p��lɊYRɩ���r�3��%�:A"���ݙ���>e�o�����1������a�]��Xov��f�o���݇�2������7�d�}? 0000233850 00000 n endobj endobj 2 0 obj endobj 0000009821 00000 n startxref stream stream <> 0000004096 00000 n 0000001016 00000 n Soil moisture is impacted by water uptake by plants, residue and vegetative cover, irrigation practices, drainage measures. INFILTRATION RATE OF SOILS IN FIELD USING DOUBLE RING INFILTROMETER A thesis Submitted by Amreeta Champatiray (212CE4486) In partial fulfillment of the requirements for the award of the degree of Master of Technology In Civil Engineering (Water Resources Engineering) Under The Guidance of Dr. K.C.