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Plans islutZfigLig glittgUlAtiMENUIRN A L MOIN YY�J�:lY PORTLAND, OR. 97216 CIVIL — STr?UCTUr?AL ENGINEERS PH: (503) 254 FAX: (503) 254 -6161 1 / y7 cv 36.3 - 079 3 Co i S 7-97 _ cV 3CP October 07, 1997 Dale Richards Windwood Homes 14076 SW Benchview Terrace Tigard, OR 97224 • Fax 590-0868 PROJECT: Hillshire Creek Subdivision. SUBJECT: Cantilever Retaining Walls This authorizes the use of the retaining wall designs at the following locations: Lot 71, 13044 Ascension Drive, 4/6/8/10/12' retaining will schedule. Lot 82, 13226 Ascension Drive, 4/6/8/10/12' retaining wall schedule_ Lot 100, 1 3620 Tracy Place, 4/6/8/10/12' retaining wall schedule. These walls were designed with the following assumptions: • Level backfill • 35 pcf equivalent fluid pressure. This also assumes no Geotechnical Report is available. • Sliding coefficient = 0.35 • The 4/6/8/10/12 wall schedule will have 16" of compacted fill placed against the toe. Copies of the retaining wall schedules are attached. - 4 - .Ntt&Le4 Payton Rowell, P.E. TOTRL P.01 Z d IO2�A IdLa : E L661 -L0 - 8 1 /ii 51 '- - 97036-' / Oslo 7-/-516 f- ,Z --- �-) PO-en l .1 n CRE:C r" .. { [REBAR "N" ..tl a-t:- -\.‘ 9 (S 2. ?�� �;' • /6/ -. .; ----"j. i 2 "CLR iC .r�` .- . #4 REBAR HORIZONTAL 12" OC REBAR "MI.. __..__,_ JJ DRAIN1 TILE , .REBAR "O" " 0 ' , m •• #4 REBAR C WsA —,/ U 15' OC B io A RETAINING WALL DETAIL Al DRAWING NOT TO SCALE, SEE WALL SCHEDULE FOR DIMENSIONS RETAINING WALL SCHEDULE H W A C B Bar "M" Bar "N" Bar "O" 4' 8" 10" 1' -2" 2'-8" #4 -18 "oc #4 -18 "oc #4 -18 "oc 6' 8" 1' 2' 3' -8" #4 -18 "oc #4 -18 "oc #4 -18 "oc 8' 8" 1' -2" 3'4" 5'-6" #4 - 16" oc #4 - 16" oc #4 - 12" oc 10' 8" 1'4" 5' -6" 7'-8" #5 - 9" oc #4 - 18" oc #6 - 10" oc 12' 8" 2' 6' -10" 9'-6" #6 -9 "oc #4 -18 "oc #7 -8 "oc ALL SECTIONS: CONCRETE Fc 3000 PSI REBAR GRADE 60 HfiII 1'-4" HI 1' 81.2 Customer. ` • Payton Rowell, P.E. Project 1311 Se 58th Street Sheet Number: Portland, OR 97215 Al Date: 2121195 503/232-4349 ' ROWELI RETAINING WALLCAD • Software Release Number B1.2 Ver ENGINEERING CONSTANTS _ Sod Density 110 OTM Factor of Safety 1.5 Concrete Density 150 Stem Factor of Safety 12 PHIvu 0.85 Heel Factor of Safety 1.4 PHIas 0.90 Sliding Factor of Safety 1.5 Sliding Coefficient 0.36 PROJECT PARAMETERS Client Name IRlck Whfte Detail Number A Project Number Sheet Number Al . Project Name ' Concrete Fc 3000 psi Max Soil Bearing Pressure 1600 psi Steel Grade I 60 60000 Equivalent Fluid Pressure 35 Lbs/ft"3 Wall Thickness 8 in Height of Soil at Toe I 16 in Footing Height 12 in SECTION 1 DESIGN H, Wall Height ft. . 4 I ft • B, Total Footing Length, in. 32 in 7 -" Reber Stem Rebar Heel Rebar A, Toe Length 10 in 10 Size OC Bar "M" Bar "N" Bar "O" C. Heel Length i 14 in 1' -2" 4 16 1356% 10652% 1513% Running Length / Calc Length 3.67 16 1 56 4 12 1793% 14342% 2017% % OTM Factor of Safety 322% 4.83 4 8 2641% 21131% 3025% % Sliding Factor of Safety 495% 7.43 4 6 3458% 27667% 4034% % Max Soil Bearing Pressure 38% psi 572 4 5 4089% 32713% 4840% Min Soil Bearing Pressure 317 psi 4 4 4997% 39976% 6C51% %Allowable Shear Stress 4% kpsi 5 5 12 2745% 21962% 3151% 5 8 4002% 32013% 4727% . Size OC 5 4 7305% 58443% 9454% Rebar "M" 4 18 1209% 6 8 5541% 44330% 6807% Reber "N" 4 18 9674% 6 6 7067% 56534% 9076% Rebar "0" 4 18 1345% 6 4 9635% 77082% 13614% SECTION 2 DESIGN • H, Wall Height ft. I 6 - I ft B, Total Footing Length, in. 44 In 3-8" Rebar Stem Rebar Heel Reber A, Toe Length 12 in V Size OC , Bar °M" r Bar "N" Bar "O" C, Heel Length 24 in 7 4 16 293% 2344% 381% Running Length / Calc Length 1.00 1 1 1 4 12 387% 3098% 508% • % OTM Factor of Safety 251% 3.76 4 8 571% 4564% 761% % Sliding Factor of Safety 143% 2.14 4 6 747% 5976% 1015% % Max Soil Bearing Pressure 60% psi 901 4 5 883% 7066% 1218% Min Sod Bearing Pressure 327 psi 4 4 1079% _ 8635% 1523% _ • %Allowable Shear Stress 12% kpsi 13 5 12 593% 4744% 793% 5 8 864% 6915% 1190% Size OC 5 4 1578% 12624% 2379% Rebar "M" 4 18 261% 6 8 1197% 9575% 1713% Rebar "N" 4 18 2090% 6 6 1526% 12211% 2284% Rebar "0" 4 18 338% 6 4 2081% 16650% 3426% SECTION 3 DESIGN H, Wall Height ft. [ 8 I ft B, Total Footing Length, in. 66 in 5-6" Rebar Stem Rebar Heel Rebar A, Toe Length i_ 14 in 1' -2" Size OC Bar "M" Bar "N" Bar "O" C, Heel Length , 44 in 3•-8" 4 1& 107% 854% 89% Running Length / Calc Length 100 1 I 1 4 12 141% 1129% 119% % OTM Factor of Safety 309% 4.63 4 8 208% 1663% 179% % Sliding Factor of Safety 126% 1.89 4 6 272% 2178% 239% • % Max Soil Bearing Pressure 72% psi 1,086 4 5 322% 2575% 286% 194131PLATE812.XLSIDesign 2/21/95 2.28 PM Page 1 012 -' Min Sal Bearing Pressure 531 psi 4 4 393% 3147% 358% %Allowable Shear Stress 23% kpsi 25 5 12 216% 1729% 186% 5 8 315% 2520% • 280% Size OC 5 4 575% 4800% 569% Rebar "M" 4 16 107% 6 8 436% 3490% 403% Rebar "N" 4 16 854% 6 6 566% 4450% 537% Rebar "O" 4 12 119% 6 _ 4 758% 8068% 806% SECTION 4 DESIGN H, Wall Height ft. I 10 I ft B, Total Footing Length, in. 92 in T-8" Rebar Stern Rebar Heel Rebar A, Toe Length 18 in V-6" Size • OC Bar "M" Bar "N" Bar "O" C, Heel Length 66 in 5-6" 4 16 50% 402% 32% Running Length / Calc Length 1.00 11i 1 4 12 66% 531% 42% % OTM Factor of Safety 377% 5.66 . 4 8 98% 783% 63% % Sliding Factor of Safety 123% 1.84 4 6 128% 1025% . 84% % Max Soil Bearing Pressure 79% psi 1,188 4 5 . 151% 1212% 101% Min Soil Bearing Pressure 793 psi 4 4 185% 1481% 126% %Allowable Shear Stress 38% kpsi 42 5 12 102% 813% 66% 5 8 148% 1186% 99% Size OC 5 4 271% 2166% 197% Rebar "M" 6 9 133% 6 8 205% 1642% 142% Rebar "N" 4 18 358% 6 6 262% 2094% 189% Rebar "0" 6 10 . 114% 6 4 357% 2855% 284% SECTION 5 DESIGN H, Wall Height ft. • 12 , ft B, Total Footing Length, in. 114 in 9'-6" Rebar Stein Rebar Heel Rebar A, Toe Length 24 in 2' Size OC Bar "M" Bar "N" Bar "0" C, Heel Length' 82 in 6 -10" 4 16 28% 220% 17% Running Length / Calc Length 1.00 1 ] 1 4 12 36% 291% 22% % OTM Factor of Safety 396% 5.94 4 8 54% 429% 33% % Sliding Factor of Safety 116% 1.74 4 6 70% 561% 44% % Max Soil Bearing Pressure 85% psi 1,277 4 5 83% 664% 53% Min Soil Bearing Pressure 1,017 psi 4 4 101% 811% 66% %Allowable Shear Stress 57% kpsi 63 5 12 56% 446% 36% 5 8 81% 649% 52% Size OC 5 4 148% _ 1186% 104% Rebar "M" 6 9 101% 6 8 112% 899% 75% Rebar "N" 4 18 196% 6 6 143% 1147% 100% Rebar "O" 7 6 102% 6 4 195% 1564% 149% i, 1 19413 1PLA TEB 12.XLS1Design 2/21/95 2:28 PM Page 2 of 2