The URL can be used to link to this page

Home My WebLink About01274 i ~ . ~~ - BAKERSFIELD PUBLIC WORKS DEPARTMENT MEMORANDUM DATE: Raul M. Rojas. Public Works Director 1)/ Jacques R. LaRuchelle - Civil Engineer IV 1r . October 17, 1995 8:10am TO: FROM: SUBJECT: ENCROACHMENT PERMIT APPLICATION FOR 2800 LOMA llNDA DRIVE - GARCES MEMORIA1~ HIGH SCHOOL INSTAlJ.ATION OF A RETAINING WALI~ AND WROUGHT IRON VIEW FENCE ~ q"3 "?o ? ********************************************************************************************* Engineering and Traffic staff have reviewed and recommend for approval the attached encroachment permit which would allow the constmction of a 5.5' high wrought iron fence on top of a 2.5' to 5.5' high concrete block retaining wall. This retaining wall would run along the back of the sidewalk on the east side 'of Union Avenue between Monte Vista Drive and Columbus Street, adjacent to the Garces Memorial High School property. Plans and Calculations have been prepared by Martin-McIntosh. However, the plans are for only the northerly portion of the wall. The school principal says the project changed so that a retaining wall is now needed along the entire Union Avenue frontage, but that most of the retaining wall along the southerly portion is only 1.5'-2'high and that the appropriate cross section will be used based upon the height of soil retained. They still must obtain a building permit for the retaining wall construction, and will have to satisfy the Building Department. Idw:m:\encroachI2800LOMA,U I ~ 1;)7'1 <,,- APPLICATION FOR ENCROACHMENT PERMIT ...' TO THE CITY ENGINEER OF THE CITY OF BAKERSFIELD CALIFORNIA :".., Pursuant to the provisions of the Ordinance No.3140 New Series of the City of Bakersfield, the undersigned applies for a permit to place, erect and/or maintain an encroachment on public property or right of way as therein defined .. The name and address of applicant is HEARN, ED 2800 LOMA LINDA DR BAKERSFIELD, CA The nature or description of this encroachment application is as follows: STEP RETAINING WALL ALONG UNION AVE WITH A 5 FT HIGH WROUGHT IRON FENCE ON TOP. (WROUGHT IRON TO MATCH EXISTING FENCE ON SOUTH SIDE OF PROPERTY.) RETAINING WALL TO STEP FROM 2.5 FT TO 5.5 FT BACK DOWN TO 2.5 FT. The location of proposed encroachment is WEST SIDE OF PROPERTY ALONG UNION AVE. Applicant agrees that if this application is granted, applicant will idemnify defend and hold harmless the City of Bakersfield, its agents, officers, and employees against and from all damages, judgement, claims, demands, expenses, costs and expenditures, and against all loss or liability which the City of Bakersfield or such officers, agents or employees may suffer, or which may be recoverable from or obtainable against the City of Bakersfield or such officer agents or employees, proximately caused by, growing out of or in any way connected with the placing, erection or maintenance of said encroachment, the applicant further agrees to maintain the aforesaid encroachment during the life of said encroachment or until such time that this permit is revoked Applicant further agrees that upon the expiration of the permit for which this application is made, if granted, or upon revocation thereof by the City engineer, applicant will at his own cost and expense remove the same from the public property or right of way where the same is located, and restore said public property or right of way to the condition as nearly may be in in which encroachment before the placing, erection, maintenance or existence of said encroachment. Date:10/05/1995 ~ Q: I \ A. ) 'i . . . . . . . . . . .' ~ . . . . . . . . . . . . . . . . . . . . . . . Signature of Applicant (Owner/Agent) I HEREBY CERTIFY THAT I HAVE MADE AN INVESTIGATION OF THE FACTS STATED IN THE FOREGOING APPLICATION AND FIND THAT THE MAINTENANCE OF SAID ENCROACHMENT (1) WILL (NOT) SUBSTANTIALLY INTERFERE WITH THE USE OF THE PUBLIC PLACE WHERE THE SAME IS TO BE LOCATED AND (2) WILL (NOT) CONSTITUTE A HAZARD TO PERSONS USING SAID PUBLIC PLACE; SAID APPLICATION IS THEREFORE (GRANTED) (DENIED). Date:l0/05/1995 ..........~~.................. Signature of City Engineer Permit No.EN-01274 APPLICATION FOR ENCROACHMENT PERMIT ~L1- Z?78 e:. D ff~ .. TO THE CITY ENGINEER OF THE CITY OF BAKERSFIELD, CALIFORNIA: Pursuant to the provisions of Ordinance No. 3140 New Series of the City of Bakersfield, the undersigned applies for a permit to place, erect and/or maintain an encroachment on public property or right of way as therein defined. The name and address of applicant is: GAflc..E5 WJ~IHt7~'AL J./ It:;. 1/ ~~L. .2(/tt7p /wo",,4 llNPA [)/~,Jve J I3At'Gf5~/ELj) / ~A IJ 3~ The nature or description of the encroachment for which this application is made is as follows: Wf WISH '1iJ Bv'LD A $#Oe.IVALItt. (S.f_E-r ~~Ala1fZ!5 It/ID~) Lifil-J, A ~r IRoJi ~eJJd IlVA/A//A/"" /Jerr '1O'f1.I6-S'O~WAL/1L. -me..f~ IVILL~e Ip$T4l..LEDL,.,,~ 'fhl;. flf:JJLe OU Ci7w"",jjf)~. 5' {lft2.-ovC:tI-f..'l' ~=r.>.J ;:G,..l c.L. The location of the proposed encroachment is: N~J./ Al.PJJt:..~AS,sJDe OF VAlI&'N ~IloWl CoLLlII1~ ~ #fe,uTIE (/iSTA - Q-sr AlI#~ St?vrtI "51/:)1/:~,J:. >>1hldE:. V$TA ;RpWl VN (t?u 717 ~()eUT fJ4(lt::/J.J~ ~~ Applicant agrees that if this application is granted, applicant will indemni.fy, defend and hold harmless the City of Bakersfield, its agents, officers and employees against and from all damages, judgments, claims, demands, expenses, costs and expenditures, and against all loss or liability which the City of Bakersfield or such officers, agents or employees may suffer, or which may be recoverable from, ot obtainable against the City of Bakersfield or such officers, agents or employees, proximately caused by, growing out of or in any way connected with the placing, erection or maintenance of said encroachment, the applicant further agrees to maintain the aforesaid encroachment during the life of the said encroachment or until such time that this permit is revoked. Applicant further agrees that upon the expiration of the permit for which this application is made, if granted, or upon the revocation thereof by the City Engineer, applicant will at his own cost and expense remove the same from the public property or right of way where the same is located, and restore said public property or right of way to the condition as nearly may be in which it was before the placing, erection, maintenance or existence of said encroachment. Date: /tJ- t/-~S" ~C) ~ fr~/lJb/r Signature of Applicant (Owner or Representative) PERMIT I HEREBY CERTIFY THAT I HAVE HADE AN INVESTIGATION OF THE FACTS STATED IN THE FOREGOING APPLICATION AND FIND THAT THE MAINTENANCE OF SAID ENCROACHMENT (1) WILL (NOT) SUBSTANTIALLY INTERFERE WITH THE USE OF THE PUBLIC PLACE WHERE THE SAME IS TO BE LOCATED AND (2) WILL (NOT) CONSTITUTE A HAZARD TO PERSONS USING SAID PUBLIC PLACE; SAID APPLICATION IS THEREFORE (GRANTED) (DENIED). Date: Signature of City Engineer No. /zrf Distribution: Original - Applicant Goldenrod - City Clerk Yellow - Public Works REV6/90 -;',- .. Martin-McIntosh Engineering 2001 Wheelan Ct. Bakersfield, CA 93309 (805) 834-4814 FAX (805) 834-0972 Title :4' RETAINING WALL Scope :GARCES HIGH SCHOOL Number: 95-48 Misc :8" MASONRY Dsngr :RLK Date:30-Aug-95 RETAINING WALL ------------------------------------------------------------------------ DESIGN Page ------------------------------------------------------------------------ SURCHARGE OVER TOE = SURCHARGE OVER HEEL = ...RESISTS OVERTURNING? Toe Heel ------- ADJACENT FOOTING --------- VERTICAL LOAD = LOAD ECCENTRICITY = FOOTING WIDTH = FTG. CL TO WALL = VERT. POSITION OF FTG. ...Above/Below:(+/-]= ft SPREAD FOOTING ? Y y/n FOOTING DATA ------------------------- TOE WIDTH = O.~~ft HEEL WIDTH = 2. ft DESCRIPTION >> 4'-0" RETAINING WALL >> ---------- SOIL DATA ------------ ALLOWABLE BEARING = 1,500 psf ACTIVE LATERAL = 35.0 pcf .....MAX PRESS. = pcf .....SLOPE PRESS. = pcf BACKFILL SLOPE = 4 :1 (horiz:vert,O=Level) PASSIVE PRESS. = SOIL DENSITY = SOIL HT OVER TOE = --------- LATERAL LOADS --------- LATERAL LOAD ACTING ON STEM ABOVE SOIL = 150 pcf 115 pcf 4 in psf ADD'L LATERAL LOAD TOP OF FTG TO START = TOP OF FTG TO END plf ft ft = = -------------------------- WALL & RETAINED HEIGHT = 3.75 ft WALL HT. ABOVE SOIL = 0.25 ft --------- VERTICAL LOADS AXIAL DL ON STEM = AXIAL LL ON STEM = ...ECC(Toward Toe='+')= plf plf in psf psf y Y y/n y/n lbs in ft ft KEY DEPTH = in Total width = 2.50 ft KEY WIDTH = in KEY DIST TO TOE = ft THICKNESS = 12 in ----------------------------- SUMMARY -------------------------------- Pressure @ Toe = 1,046 psf Factors of Safety: Pressure @ Heel = psf Overturning = 2.82 Allowable Press. = 1,500 psf Sliding = 1.55 Ecc. of resultant = 5.01 in Max. Shear @ Toe Max Shear @ Heel = psi = -4.12 psi Allow. Ftg Shear = 93.11 psi ---------------------------------------------------------------------- ------ SLIDING CHECK ------ FTG/SOIL FRICTION = 0.40 SOIL TO NEGLECT = in Factor of Safety = 1.55 Lateral Pressure = - Passive Pressure = - Friction = 452 lbs 133 lbs 568 Ibs Add'l Force Required = lbs -------------------------- FOOTING DESIGN ------------------------------ Soil Press. Mult. ---Toe-- --Hee1-- f'c = 3,000 psi By ACI Eq. 9-1 psf= 1,465 Fy = 40,000 psi Mu - upward ft-#= 171 Min. As Percent = 0.0014 Mu - Downward ft-#= 33 1,011 OMIT SP UNDER HEEL? Y y/n Mu - Design ft-#= 138 (1,011) --------- Rebar Choices -------- One-Way Shear: -- Toe -- Heel Actual psi= 4.1 # 4 @ 16.81 in o.c. 16.81 Allowable psi= 93.1 93.1 # 5 @ 26.05 " 26.05 Martin-McIntosh Engineering 2001 Wheelan Ct. Bakersfield, CA 93309 (805) 834-4814 FAX (805) 834-0972 Title :4' RETAINING WALL Scope :GARCES HIGH SCHOOL Number: 95-48 Misc :8" MASONRY Dsngr :RLK Date:30-Aug-95 ------------------------------------------------------------------------ DESIGN Page RETAINING WALL ------------------------------------------------------------------------ Cover over Rebar in= 3.50 3.50 # 6 @ 36.97 " 36.97 'd' in= 8.50 8.50 # 7 @ 48.00 II 48.00 Ru = Mu/bd^2 psi= 2.1 15.6 # 8 @ 48.00 II 48.00 # 9 @ 48.00 II 48.00 #10 @ 48.00 II 48.00 #11 @ 48.00 II 48.00 --------------------------- STEM DESIGN -------------------------------- <----------- Stem Sections -------------> WALL TyPE....... 1:Mas,2:Conc,3:Not Used DESIGN HEIGHT ABOVE FTG. REBAR: 0:Cntr,1:Edge 'd' FOR DESIGN Top . . . . . . . . . . . . . Bot tom -------------------------------------- 1 1 1 1 1 = ft ? 1 5.25 = . DE SIGN DATA......................................................... THICKNESS (nominal) REBAR SIZE REBAR SPACING Lateral Load @ Section Moment....Actual Moment. . . .Allow. Shear.....Actual Shear. . . . .Allow. ....Interaction Result Wall Weight n : Modular Ratio Rebar Embed Length in 8 # 4 = 48 = 244 = 307 = 413 = 2.7 = 21.2 = 0.744 = 78.0 = 21. 48 = 6.00 in # ft-# ft-# psi psi psf in .MASONRY STEM DATA...................................................... f'm = 1,800 1,500 1,500 1,500 1,500 psi Fs = 20,000 24,000 24,000 24,000 24,000 psi ALL CELLS GROUTED ?Y N N N N y/n USE SPECIAL INSP. ? N N N N N y/n Load Duration Factor = 1.00 1.00 1.00 1.00 1.00 in . CONCRETE STEM DATA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . f'c = 3,000 3,000 3,000 3,000 3,000 psi Fy = 40,000 60,000 60,000 60,000 60,000 psi ------ SUMMARY OF FORCES & MOMENTS ------------------------------------ <-Overturning Moments-><- Resisting Moments -> Origin of Force: # ft ft-# # ft ft-# ---------------- ------- Active Soil Press. = 452.2 Soil over Heel = Soil over Toe = -31.1 Sloped Soil @ Heel = Adjacent Ftg. Load = Surcharge Over Heel = ~~ ... Martin-McIntosh Engineering 2001 Wheelan Ct. ' Bakersfield, CA 93309 (805) 834-4814 FAX (805) 834-0972 Title :4' RETAINING WALL Scope :GARCES HIGH SCHOOL Number: 95-48 Misc :8" MASONRY Dsngr :RLK Date:30-Aug-95 ------------------------------------------------------------------------ RETAINING WALL DESIGN Page ------------------------------------------------------------------------ Averaged Stem wts. = 312.0 0.83 260 Added Lateral Load = Footing Weight = 375.0 1.25 468.74 Key Weight = Vertical Component of Active Pressure = 113.1 2.50 282.62 -------- ------- ------- ------- Totals =421. 093 752.40 1419.8 2122.8 -------- ------- ------- ------- Resisting Totals Used For Soil Pressure = 1306.7 1840.2 (Vert. Component of Active Pressure Removed) ----------------------- STEM VALUE MODIFICATIONS ----------------------- Top . . . . . . . . . . . . . Bottom -------------------------------------- 'N' Multiplier = 750 750 750 750 750 Center 'd' Modifier = 1.00 1.00 1. 00 1. 00 1.00 Edge 'd' Modifier = 1.00 1.00 1.00 1.00 1.00 Wall wt. Multiplier = 1. 00 1.00 1. 00 1.00 1.00 Type: 1=LtWt,2=MedWt,3=NrmWt: 2 2 2 2 2 p, Iii Martin-McIntosh Engineering 2001 Wheelan Ct. Bakersfield, CA 93309 (805) 834-4814 FAX (805) 834-0972 Title :2.5' RETAINING WALL Scope :GARCES HIGH SCHOOL Number: 95-48 Misc :8" MASONRY Dsngr :RLK Date:30-Aug-95 RETAINING WALL ------------------------------------------------------------------------ Page DESIGN ------------------------------------------------------------------------ DESCRIPTION >> 2'-8" RETAINING WALL >> ---------- SOIL DATA ------------ ALLOWABLE BEARING = 1,500 psf ACTIVE LATERAL = 35.0 pcf .....MAX PRESS. = pcf .....SLOPE PRESS. = pcf BACKFILL SLOPE = 4 :1 (horiz:vert,O=Level) PASS IVE PRESS. = SOIL DENSITY = SOIL HT OVER TOE = --------- LATERAL LOADS --------- LATERAL LOAD ACTING ON STEM ABOVE SOIL = 150 pcf 115 pcf 4 in psf ADD'L LATERAL LOAD TOP OF FTG TO START = TOP OF FTG TO END plf ft ft = = -------------------------- WALL & RETAINED HEIGHT = 2.5 ft WALL HT. ABOVE SOIL =0.16666 ft --------- VERTICAL LOADS AXIAL DL ON STEM = AXIAL LL ON STEM = ...ECC(Toward Toe='+'}= SURCHARGE OVER TOE = SURCHARGE OVER HEEL = ...RESISTS OVERTURNING? Toe Heel ------- ADJACENT FOOTING VERTICAL LOAD = LOAD ECCENTRICITY = FOOTING WIDTH = FTG. CL TO WALL = VERT. POSITION OF FTG. ...Above/Below:(+/-)= SPREAD FOOTING ? FOOTING DATA ------------ TOE WIDTH HEEL WIDTH plf plf in Y Y psf psf y/n y/n lbs in ft ft y ft y/n = 0.5 ft = 1. 1666 ft KEY DEPTH = in Total width = 1.67 ft KEY WIDTH = in KEY DIST TO TOE = ft THICKNESS = 12 in ----------------------------- SUMMARY -------------------------------- Pressure @ Toe = 784 psf Factors of Safety: Pressure @ Heel = psf Overturning = 2.62 Allowable Press. = 1,500 psf Sliding = 1.77 Ecc. of resultant = 3.63 in Max. Shear @ Toe Max Shear @ Heel psi psi = = Allow. Ftg Shear = 93.11 psi ---------------------------------------------------------------------- ------ SLIDING CHECK ------ FTG/SOIL FRICTION = 0.40 SOIL TO NEGLECT = in Factor of Safety = 1.77 Lateral Pressure = - Passive Pressure = - Friction = 230 lbs 133 lbs 273 lbs Add'l Force Required = lbs -------------------------- FOOTING DESIGN ------------------------------ Soil Press. Mult. ---Toe-- --Heel-- f'c = 3,000 psi By ACI Eq. 9-1 psf= 1,098 Fy = 40,000 psi Mu - Upward ft-#= 123 Min. As Percent = 0.0014 Mu - Downward ft-#= 33 127 OMIT SP UNDER HEEL? Y y/n Mu - Design ft-#= 90 (127) --------- Rebar Choices -------- One-Way Shear: -- Toe -- Heel Actual psi= # 4 @ 16.81 in o.c. 16.81 Allowable psi= 93.1 93.1 # 5 @ 26.05 " 26.05 ?' ~ Martin-McIntosh Engineering 2001 Wheelan Ct. Bakersfield, CA 93309 (805) 834-4814 FAX (805) 834-0972 Title :2.5' RETAINING WALL Scope :GARCES HIGH SCHOOL Number: 95-48 Misc :8" MASONRY Dsngr :RLK Date:30-Aug-95 ------------------------------------------------------------------------ DESIGN Page RETAINING WALL ------------------------------------------------------------------------ Cover over Rebar in= 3.50 3.50 # 6 @ 36.97 " 36.97 'd' in= 8.50 8.50 # 7 @ 48.00 " 48.00 Ru = Mu/bd^2 psi= 1.4 2.0 # 8 @ 48.00 " 48.00 # 9 @ 48.00 " 48.00 #10 @ 48.00 " 48.00 #11 @ 48.00 " 48.00 --------------------------- STEM DESIGN -------------------------------- <----------- Stem Sections -------------> WALL TyPE....... 1:Mas,2:Conc,3:Not Used DESIGN HEIGHT ABOVE FTG. REBAR: O:Cntr,l:Edge 'd' FOR DESIGN Top . . . . . . . . . . . . . Bottom -------------------------------------- 1 1 1 1 1 = ft ? 1 5.25 = . DE SIGN DATA......................................................... THICKNESS (nominal) REBAR SIZE REBAR SPACING Lateral Load @ Section Moment....Actual Moment. . . .Allow. Shear. . . . .Actual Shear. . . . .Allow. ....Interaction Result Wall Weight n : Modular Ratio Rebar Embed Length in = 8 # 4 = 48 = 107 = 91 = 413 = 1.2 = 21.2 = 0.220 = 78.0 = 21. 48 = 6.00 in # ft-# ft-# psi psi psf in .MASONRY STEM DATA...................................................... f'm = 1,800 1,500 1,500 1,500 1,500 psi Fs = 20,000 24,000 24,000 24,000 24,000 psi ALL CELLS GROUTED ?y N N N N y/n USE SPECIAL INSP. ? N N N N N y/n Load Duration Factor = 1.00 1.00 1. 00 1.00 1. 00 in . CONCRETE STEM DATA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . f'c = 3,000 3,000 3,000 3,000 3,000 psi Fy = 40,000 60,000 60,000 60,000 60,000 psi ------ SUMMARY OF FORCES & MOMENTS ------------------------------------ <-Overturning Moments-><- Resisting Moments -> Origin of Force: # ft ft-# # ft ft-# ---------------- ------- Active Soil Press. = 230.0 Soil over Heel = Soil over Toe = -31.1 Sloped Soil @ Heel = Adjacent Ftg. Load = Surcharge Over Heel = Surcharge over Toe = Axial Load on Wall = Load @ proj. Wall = ------- ------ ------- ------- ------- 1.21 277.86 0.44 -13.82 143.8 19.2 3.6 1.42 203.64 0.25 4.7916 1.50 5.3906 '~~." ... Martin-McIntosh Engineering 2001 Wheelan Ct. Bakersfield, CA 93309 (805) 834-4814 FAX (805) 834-0972 Title :2.5' RETAINING WALL Scope :GARCES HIGH SCHOOL Number: 95-48 Misc :8" MASONRY Dsngr :RLK Date:30-Aug-95 ------------------------------------------------------------------------ RETAINING WALL DESIGN Page ------------------------------------------------------------------------ Averaged Stem wts. = 208.0 0.83 173.33 Added Lateral Load = Footing Weight = 250.0 0.83 208.33 Key Weight = vertical Component of Active Pressure = 57.5 1. 67 95.817 -------- ------- ------- ------- Totals =198.849 264.04 682.0 691. 31 -------- ------- ------- ------- Resisting Totals Used For Soil Pressure = 624.5 595.49 (Vert. Component of Active Pressure Removed) ----------------------- STEM VALUE MODIFICATIONS ----------------------- Top . . . . . . . . . . . . . Bottom -------------------------------------- 'N' Multiplier = 750 750 750 750 750 Center 'd' Modifier = 1.00 1.00 1.00 1.00 1.00 Edge 'd' Modifier = 1.00 1.00 1.00 1.00 1.00 Wall wt. Multiplier = 1.00 1. 00 1.00 1.00 1.00 Type: 1=LtWt,2=MedWt,3=NrmWt: 2 2 2 2 2 is '~ Martin-McIntosh Engineering 2001 Wheelan Ct. Bakersfield, CA 93309 (805) 834-4814 FAX (805) 834-0972 Title :6' RETAINING WALL Scope :GARCES HIGH SCHOOL Nurnber:95-48 Misc :8" MASONRY Dsngr :RLK Date:30-Aug-95 RETAINING WALL ------------------------------------------------------------------------ DESIGN Page ------------------------------------------------------------------------ DESCRIPTION >> 6'-0" RETAINING WALL >> ---------- SOIL DATA ------------ ALLOWABLE BEARING = ACTIVE LATERAL = . . . . .MAX PRESS. = .....SLOPE PRESS. = BACKFILL SLOPE = (horiz:vert,O=Level) PASSIVE PRESS. = SOIL DENSITY = SOIL HT OVER TOE = --------- LATERAL LOADS LATERAL LOAD ACTING ON STEM ABOVE SOIL = ADD'L LATERAL LOAD TOP OF FTG TO START = TOP OF FTG TO END 1,500 psf 35.0 pcf pcf pcf 4 : 1 150 pcf 115 pcf 4 in --------- psf plf ft ft = = -------------------------- WALL & 6 ft ft RETAINED HEIGHT WALL HT. ABOVE SOIL = = SURCHARGE OVER TOE = SURCHARGE OVER HEEL = ...RESISTS OVERTURNING? Toe Heel -----~- ADJACENT FOOTING --------- VERTICAL LOAD = LOAD ECCENTRICITY = FOOTING WIDTH = FTG. CL TO WALL = VERT. POSITION OF FTG. ...Above/Below:(+/-]= ft SPREAD FOOTING ? Y y/n FOOTING DATA ---------~------------ TOE WIDTH = 0.5 ft HEEL WIDTH = 4 ft --------- VERTICAL LOADS AXIAL DL ON STEM = AXIAL LL ON STEM = ...ECC(ToWard Toe='+')= plf plf in psf psf Y Y y/n y/n lbs in ft ft KEY DEPTH = in Total width = 4.50 ft KEY WIDTH = in KEY DIST TO TOE = ft THICKNESS = 12 in ----------------------------- SUMMARY -------------------------------- Pressure @ Toe = 1,236 psf Factors of Safety: Pressure @ Heel = 255 psf Overturning = 3.62 Allowable Press. = 1,500 psf Sliding = 1.50 Ecc. of resultant = 5.92 in Max. Shear @ Toe Max Shear @ Heel = psi = -12.21 psi Allow. Ftg Shear = 93.11 psi ---------------------------------------------------------------------- ------ SLIDING CHECK ------ FTG/SOIL FRICTION = 0.40 SOIL TO NEGLECT = in Factor of Safety = 1.50 Lateral Pressure = - Passive Pressure = - Friction = 1,051 lbs 133 Ibs 1,447 lbs Add'l Force Required = Ibs __________________________ FOOTING DESIGN ------------------------------ Soil Press. Mult. ---Toe-- --Heel-- f'c = 3,000 psi By ACI Eq. 9-1 psf= 1,731 357 Fy = 40,000 psi Mu - Upward ft-#= 210 Min. As Percent = 0.0014 Mu - Downward ft-#= 33 6,994 OMIT SP UNDER HEEL? Y y/n Mu - Design ft-#= 177 (6,994) --------- Rebar Choices -------- One-Way Shear: -- Toe -- Heel Actual psi= 12.2 # 4 @ 16.81 in o.c. 6.44 Allowable psi= 93.1 93.1 # 5 @ 26.05 " 9.98 ~ ~ -~ Martin-McIntosh Engineering 2001 Wheelan Ct. Bakersfield, CA 93309 (805) 834-4814 FAX (805) 834-0972 Title :6' RETAINING WALL Scope :GARCES HIGH SCHOOL Number: 95-48 Misc :8" MASONRY Dsngr :RLK Date:30-Aug-95 ------------------------------------------------------------------------ DESIGN Page RETAINING WALL ------------------------------------------------------------------------ Cover over Rebar in= 3.50 3.50 # 6 @ 36.97 14.16 'd' in= 8.50 8.50 # 7 @ 48.00 19.31 Ru = Mu/bd^2 psi= 2.7 107.6 # 8 @ 48.00 25.43 # 9 @ 48.00 32.19 #10 @ 48.00 40.88 #11 @ 48.00 48.00 --------------------------- STEM DESIGN -------------------------------- <----------- Stem Sections -------------> WALL TyPE....... I:Mas,2:Conc,3:Not Used DESIGN HEIGHT ABOVE FTG. REBAR: O:Cntr,l:Edge 'd' FOR DESIGN Top . . . . . . . . . . . . . Bot tom -------------------------------------- = 1 2 1 5.25 1 1 1 1 ft ? 1 9.00 . DE SIGN DATA......................................................... = = 8 12 in # 4 5 = 48 48 in = 280 628 # = 373 1,260 ft-# = 413 1,314 ft-# = 3.1 8.1 psi = 21.2 19.4 psi = 0.904 0.959 = 78.0 75.0 psf = 21.48 25.78 = 18.08 6.00 in THICKNESS (nominal) REBAR SIZE REBAR SPACING Lateral Load @ Section Moment....Actual Moment. . . .Allow. Shear.....Actual Shear. . . . .Allow. ....Interaction Result Wall Weight n : Modular Ratio Rebar Embed Length . MASONRY STEM DATA...................................................... f'm Fs ALL CELLS GROUTED USE SPECIAL INSP. Load Duration Factor . CONCRETE STEM DATA..................................................... f'c = 3,000 3,000 3,000 3,000 3,000 psi Fy = 40,000 60,000 60,000 60,000 60,000 psi = 1,800 1,500 1,500 1,500 1,500 psi = 20,000 24,000 24,000 24,000 24,000 psi ?Y N N N N y/n ?N N N N N y/n = 1. 00 1. 00 1. 00 1.00 1.00 in ------ SUMMARY OF FORCES & MOMENTS ------------------------------------ <-Overturning Moments-><- Resisting Moments -> Origin of Force: # _ ft ft-# # ft ft-# ---------------- ------- Active Soil Press. = 1051.1 Soil over Heel = Soil over Toe = -31.1 Sloped Soil @ Heel = Adjacent Ftg. Load = Surcharge Over Heel = Surcharge over Toe = Axial Load on Wall = Load @ Proj. Wall = -- '":f""( a Martin-McIntosh Engineering 2001 Wheelan Ct. Bakersfield, CA 93309 (805) 834-4814 FAX (805) 834-0972 Title :6' RETAINING WALL Scope :GARCES HIGH SCHOOL Number: 95-48 Misc :8" MASONRY Dsngr :RLK Date:30-Aug-95 ------------------------------------------------------------------------ RETAINING WALL DESIGN Page ------------------------------------------------------------------------ Averaged Stern wts. = 462.0 0.89 410 Added Lateral Load = Footing Weight = 675.0 2.25 1518.7 Key Weight = vertical Component of Active Pressure = 262.8 4.50 1182.4 -------- ------- ------- ------- Totals =1019.98 2701. 4 3618.3 9778.8 -------- ------- ------- ------- Resisting Totals Used For Soil Pressure = 3355.5 8596.3 (Vert. Component of Active Pressure Removed) ----------------------- STEM VALUE MODIFICATIONS ----------------------- Top . . . . . . . . . . . . . Bottom -------------------------------------- 'N' Multiplier = 750 750 750 750 750 Center 'd' Modifier = 1.00 1.00 1.00 1. 00 1. 00 Edge 'd' Modifier = 1.00 1.00 1.00 1.00 1.00 Wall wt. Multiplier = 1.00 1.00 1. 00 1.00 1.00 Type: 1=LtWt,2=MedWt,3=NrrnWt: 2 2 2 2 2