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20090921101214455.pdf'^Y 7 L(—,. -9- —� Li� �r �5`�!f'1 , a Frs -' .�fff.� B �,�'TYLJ � =4�6, �ii•p,a4 n af'�`��-wR .r",$ �.^ox�+ I 17rl $gyp q�p+. g �] _g3�,g__ _ gj,�g�([/t��ogf � .�.. _,. _ ..�.��•�� }.�� ,'� S! 6dYGA1d0 bd �+ �� ®vs C9 !tea P',�jy �� f{ r.3 �'IY4„ 11 ie4fi oft af�s�7e�i� L� r 8 ( 1 0 * --4" C �LoLt0 �0"V� 3431 39th Ave. W_ Seattle, Washington 98199 It Fax 217-0485 f f CHERIE A. MUELLER DESIGNS ArchRerLure a Interims STREET FILE � PROJECT'—NOTES v PROPERTY NOTES PROJECT DESCRIPTION:. ZONE: RS -8 585 SF ADDITIGN ONTO EXISTING 1002 SF RESIDENCE. 40 SF ADDED FRONT PORCI I LOT SIZE: 109 X 70 = 7630 SF (35% = 2670 SF PERMITTED COVERAGE) 594 SF DETACHED 2 -CAR GARAGE AT REAR YARD IAT COVERAGE: 21%I SF (29% LOT COVERAGE) ADDRESS: 22414 9e" Ave. W. EDMONDS, WA- 98026 -,f IMPI RVI®US SURCACE CALLS SOLID SURFACES t PARCEL NO. 00559000200700`, r' �' ' Existing building roof Line: 1200 SF (constructed in 1955) LEGAL: ROBERT E. THOMAS ADDITION NO.4, BLOCK 2 D-00, LOT 7 Existing drWeway: 385 SF (constructed in 1955) } Existi atio: 250 SF constructed in 1955��" OWNER: BRIAN HUNT Proposed addition: 667 SF Proposed garage: 750 SF 425-772-5525 Proposed covered porch: 96 SF (Rear) 40 SF (Front) '^Y 7 L(—,. -9- —� Li� �r �5`�!f'1 , a Frs -' .�fff.� B �,�'TYLJ � =4�6, �ii•p,a4 n af'�`��-wR .r",$ �.^ox�+ I 17rl $gyp q�p+. g �] _g3�,g__ _ gj,�g�([/t��ogf � .�.. _,. _ ..�.��•�� }.�� ,'� S! 6dYGA1d0 bd �+ �� ®vs C9 !tea P',�jy �� f{ r.3 �'IY4„ 11 ie4fi oft af�s�7e�i� L� r 8 ( 1 0 * --4" C �LoLt0 �0"V� 3431 39th Ave. W_ Seattle, Washington 98199 It Fax 217-0485 f f CHERIE A. MUELLER DESIGNS ArchRerLure a Interims Table 1 -- Detention Pipe Sizes * Impervious Surface Required Pipe Diameter Area SQ. Ft. Vol Cu Ft 15"' 18" 24" 30" 2000 50 40 28 16 10 2500 62 50 35 20 13 3000 75 60 42 24 15 Required pipe 3500 87 70 49 28 18 length in feet 4000 100 80 6 32 21 4500 112 90 36 23 5000 125 100 70 40 25 *NOTE: Use the next highest surface area to determine detention size if calculated impervious surface area is greater than 112 the value between numbers. (i.e., 2280 use 2500) Table 2 -- Outlet Orifice Sizes Impervious Surface Area Sq. Ft. Outlet Orifice Diameter (Inches) 2000-2999 518 3000-3999 314 4000-5000 718 Table 3 -- Rectangular Catch Basin Requirements Detention Max. Size Catch Basin pipe diameter knockout Type < 18" 20" 18" to 24" 26" 24" to 36" 36" 36" to 42" 42" Type I, CB 15 Type IL, CB 16 Type 11, CB 19 19 (48" Basin) Type II, CB 19 19 (54" Basin) *Source: Assoc. Sand & Gravel Co. Standards ALLLOWABLE STORM DRAINAGE DETENTION OR CONVEYANCE MATERIALS: • Reinforced Concrete (right-of-way) • Non -reinforced Concrete (non -right-of-way) • Aluminized Steel • Aluminum 16 GA or better • CMP Asphalt Coated • N-12 ADS HDPE (Min. 2' cover required under paved areas) water tight a� • PVC -SDR 35, ASTMD-3034 or better • Ribbed PVC pipe, ASTM D-2444 ` ®'S • DuCticle iron pipe Class 50 - Tightlines system: • N-12 ADS (Smooth Wall) • PVC -SDR 35, ASTMD-3034, or better • Hancor F-810 SaENGR1HAND0UTS1Drainage tables E21