306 ALDER ST 2018-01-02 MF Import

( 12°Gor1 PAGtG� S��H�� Z%2 H :�V OtJ•SITL 5011. , , � _ i � - - • . . . � .� - i . , . - _ '� � - I `' _ ' - , — • - ," � , - • - , . . o , � H �� Rn.i�J Ro�k i nn� ' u - : .'` �, .' ° � • , �`/� (�ck �' � o . . '_ . . /�� GoURSE � • �Z°'fo4" `o � � `o �. ' ,` . sP.nws) '.�'. • , � . /• :•' _` .'� ' . .i — `= - - �• . �� • ;,` • . � e� • _ ;•' �.l. ' STRuctURh.�— � � - �E .. FII,L r �� _ � i _ SE�1cN�N EXiST• 12� MI�. L '� � 70 �a �RADE � _ = r= q — � � , hlo�l-WOVF.rI �Il'(ER FAP�RI G 20�H��J. 4'�y� MI�•�PERF02ATED, NCTES: RIGID, PVc �aa�� PIPE 1. Standa�d Rockery Construction Guidelines published by the Association of the Rockery Contractors should be followed. 2. Rock material should be hard, sound, durable and free of crecks, fissures and other detects 3. Emhankment should 6e constructed of structurel fill of clean, free-draining soils,free of organic and other deleteric�us substances,with particle sizes no larger than 4 inches. Structurel Fill should be placed in liks less than 10 inches ir loose state and compacted to at least 95%oi the maximum dry density determined by ASTM D1557(Modified Proctor method). The sioping face of the fill embankment should be compacted to a non-yielding state with a hoe-pack. next lift of structurel fill. Overlaps oi geogrid mesh in the direction parelleling rockery should be at least 12 inches wide. 4. The drain pipe should be wrapped in a layer of non-woven filter fabric and completely embedded in pea gravei. The trench and drain line should have sufficient gradient to generate flow by gravky. 5. �acial stones should be as nearly rectangula�as possible and stacked tightly against one another with their longest dimension perdendicular to the face ot rockery and to keep voids no more than 6 inches across in any direction. 6. The base-course stones should be set on undisturbed,firm, native soil,free of standing water and with an allowable bearing capacity of at least 3,000 psf. - 7_ Each tacial stone should be staggered with and firmly supported on two stones below. Facial stones should be tilted back at a slope no steeper than 6V:1H. � 8. Drein rock course should consist of 2-to-0-inch quarry spalls, placed in tifts after the completion of each course of facial stones. ROCK SIZE AND WEIGHT SCHEDULE ROCKERY FACIAL STONE SCHEDULE Rock Size Weight,Pounds Avg.Dimenslon,Ft. Wall Height Facial Stone Size ' Smau io large t+.tan 50-200 0.75-1.15 H Ft. Base Course Lower TMrd Middle Thirtl U er Third Small 10 large P-04an � 200-700 1.25-2.0 4 5 3-Man L lo S 2-Man L lo S 1-Man L lo S^.-Man . Small to Large 3�Aan 700-2000 2.0-275 6 Lnrge 3�MUn SmaV!3-Man L lo S 3-Men L to S 1-Man i Smaf lo Large 4�Man 2000-A000 275-3.5 8 Small<-man Lerge 3�Man L lo S 3-Man L to 5 NAan � S�Man 4000-6000 4.0-�.5 10 Lar�e 17�n Small 4-man Ler e 3-0Aen L to 5 3-Man � 6Man 8000�8000 q.5-5.0 72 Small 5-01an Large 4-Mnn Sanll 4-man Lar e 3�Man LIU & ASSCICIATES, INC. TYPICAL SECTION ROCKERY LINING FILL EMBANKMENT Geotechnical Engineeriny Engineering Geology�Earth Science PLATE NO. 2 7 �