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HomeMy WebLinkAboutPD 2021-0001; HAMDARD RESIDENCE; RESPONSE TO THIRD PARTY GEOTECHNICAL REVIEW (SECOND); 2021-03-31ALLIED E_,t\RTH TECHNOLOG\7 !tOHERr CH.\'\. PF. -9 i 5 -,i l. \TR rO"-.\ ,r,L L sun: 3 1"' :-i:\ \; DI LGO. C..\L: FOR'\ L.\ '-i; J::6 f'IL {8~81 ~S6-1t'6~ 11.:..1°1Jn-4-..1- E-\I.\IL . ROlff.RL-\LL1.I..Ol. CO\! March 31, 2021 TO : Hetherington Engineering, Inc. FROM: Robert Chan, P.E. SUBJECT: Response to Third Party Geotechnical Review (Second) Proposed Residential Building Site End of La Coruna Place Carlsbad, California Gentlemen: 1. The Consultant should provide recommendations for the proposed permeable pavers. See attached pervious pavement cross section, to be incorporated into grading plan. The pervious pavement as designed will be adequate to support emergency vehicles weighing 75,000 lbs. and within the life cycle of the pavers, all in accordance with CFC503. l, 503.2, Appendix D, Section D102.1, and the "Oreo Permeable Interlocking Concrete Paver, Pavement Design Handbook" 2. The Consultant should revisit the project seismic risk category and revise if necessary. The undersigned has reviewed Table 1604.5 of the IBC, entitled "Risk Category of Buildings and Other Structures", and determined that Risk Category II 'INould be more appropriate for subject structure. espectfully sub ALLIEDE . . . . . . . ... •.• ii· . ~: .-.. : ·,,}· ·: ·:,., ·t. ·.: ~ '·.· • •I'> -• •• MODIFIED TYPE Al OR TYPE Bl CURBS WITHOUT CHAMBER PER CALTRANS STANDARD PLAN A87A PERVIOUS PAYERS r 6" /}i\// :<_;r-v=1-,l =~"""r7"1~:,,--,:-~r,-,,,=n-r-..-~"""""'=~~"r.--7--r=~=-4,.. --~-•,:·~·.-• .. ··~"'--. ; .. · ... -.. · .. . . . . , . . . ' .... . . . .... . •. . .-.. . ·" •• .11,-t .. · ... . ·! .: : .·• .• a --\: . ··./_::,-~ ... > · © DETAIL RESERVOIR (USE CLASS 4 AGGREGATE) - \ l --su::~: ~OMPACT~D TO 90% OF MAX.DRY DENSITY PERVIOUS PAVEMENT CROSS SECTION NOTTO SCALE