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Home My WebLink AboutBLD2009-00212 Retaining Wall - BLD Application - 3/26/2009 FORM MUST BE COMPLETED IN INK MASON COUNTY PERMIT NO. PLEASE PRESS HARD BUILDING PERMIT APPLICATION 426 W. Cedar- P.O. Box 186, Shelton, WA 98584 d Shelton (360) 427-9670 - Belfair (360) 275-4467 - Elma (360) 482-5269 On the web www.co.mason.wa.us APPLICANT INEgRMATION CONTRACTOR INFORM,TION Owner l Company Name Mailing Address V' _F Mailing Address City State Zip Code City State Zip Code Phone Other Ph. Phone Other Ph. Lien/Title Holder Contractor Reg. � Exp. E mail address E Mail Address Drivers Lic. # DOB Drivers Lic. # DOB SEPTIC /WATER SYSTEM INFORMATION - Connect to New Septic Existing Septic Connect to Water System Name of Water System Well Sewer System Name of Sewer System PARCEL INFORMATION - 12 Digit Parcel No. — Fire District Legal Description Site Address (Please include street name, street number and city) Directions to site Will timber be cut and sold in parcel preparation?Yes/No Is property within 200' of Saltwater Lake River/Creek Pond Wetland Seasonal Runoff Stream Slopes or Bluffs Is this permit submittal the result of a Stop Work Notice,Correction Notice or other enforcement action?Yes/No TYPE OF JOB - N,eW , Add Alt Repair ther PRI RY.RESIDENCE SEASONAL ❑ Use of Building —may�—fir Describe Work No. of Bedrooms No. of Bathrooms Square Footage- 1 st Flo r 2nd Floor 3rd Floor Basement Deck Covered Deck Other Sq. ft. Garage Attached Detached Carport Attached Detached MANUFACTURED HOME INFORMATION - Make Model Year Length Width Serial No. No. of Bedrooms No. of Bathrooms Type of Heat Purchase Price $ Replacement Unit? Yes/ No Installer Name Certification No. OWNER/BUILDER Acknowledges submission of inaccurate information may result in a stop work order or permit revocation. Acknowledgement of such is by signature below. I declare that I am the owner,owners legal representative,or the contractor. I further declare that I am entitled to receive this permit and to do the work as proposed in the application. I declare that I have obtained the permission from all the necessary parties. If permission is required from any easement holder or any other party in interest regarding this application or the work proposed in the application, I have obtained permission from them to apply for this permit and conduct the work proposed. The owner or agent on owners behalf, represents that the information provided is accurate and grants employees of Mason County access to the above described property and structure for review and inspection. This permit/application becomes null & void if work or authorized construction is not commenced within 180 days or if construction work is suspended for a period of 180 days. PROOF OF CONTINUATION OF WORK IS BY MEANS OFA PROGRESS INSPECTION.INACTIVITY OF THIS PERMIT APPLICATION OF 180 DAYS WILL INVALIDATE THEAPPLICATION. X �'_.-'` Date: �`� 2,L U Owner/Owners Representative/Contractor (indicate which one) FOR OFFICIAL Ugli8tgYOND THIS POINT Accepted byTlZjf5L4 Date DEPARTMENTAL REVIEW APPROVED DENIED NOTES Building Department I Planning Department Environmental Health Department Fire Marshal FEES Building Permit Fee Site Ins ection Plan Review Fee EH Review Fee Plumbing & Base Fee Planning Review Fee Mechanical & Base fee Other Wood /Gas/ Pellet Stove Fee State Fee Violation Fee Pre-Paid at Submittal Valuation $ TOTAL FEES a r MASON COUNTY PERMIT NO PLUMBING/MECHANICAL PERMIT APPLICATION 426 W.Cedar• P.O. Box 186, Shelton,WA 98584 Shelton (360) 427-9670•Belfair(360) 275-4467• Elma (360) 482-5269 On the web www.co.mason.wa.us APPLICANT INFORMATION CONTRACTOR INFORMATION Owner t (- Z--1 C.'✓ Company Name Mailing Address Mailing Address City State Zip Code City State Zip Code Phone Other Ph. Phone Other Ph. Lien/Title Holder Contractor Reg. # Exp. E mail address E Mail Address Drivers Lic.# DOB Drivers,Lic.# DOB SEPTIC INFORMATION - Connect to New Septic Exist' 'g Sept' Connect to Sewer System Name of Sewer System PARCEL INFORMATION - 12 Digit Parcel No. _ Fire District Legal Description Site Address (Please include street name, street number and city) Directions to site Is property within 200'of Saltwater Lake River/Creek Pond Wetland Seasonal Runoff-Stream-Slopes or Bluffs > 15% TYPE OF JOB - New Add Alt Repair Other Use of Building Location of Fixtures/Units - 1 st Floor 2nd Floor Basement Garage Closet PLUMBING FIXTURES (Show Number of each) MECHANICAL UNITS Type of Fixture No. of Fixtures Fees Fuel Type:Electric LPCz_ Natural Gas_ Heat Pump_ Toilets Type of Unit No. of Units Fees Bathroom Sink Furnace Bath Tubs Heatpumps Showers Spot Vent Fan Water Heater _ Propane Tank Clothes Washer Gas Outlets Kithen Sinks Wood/Gas/Pellet Stove Dishwasher Kitchen Exhaust Hood Hosebibs Dryer Vent Other Other Base Fee Base Fee TOTAL PLUMBING TOTAL MECHANICAL OWNER/BUILDER Acknowledges submission of inaccurate information may result in a stop work order or permit revocation.Acknowledgement of such is by signature below.I declare that I am the owner,owners legal representative,or the contractor.I further declare that I am entitled to receive this permit and to do the work as proposed in the application.I declare that I have obtained the permission from all the necessary parties.If permission is required from any easement holder or any other parry in interest regarding this application or the work proposed in the application,I have obtained permission from them to apply for this permit and conduct the work proposed. The owner or agent on owners behalf,represents that the information provided is accurate and grants employees of Mason County access to the above described property and structure for review and inspection. PROOF OF CONTINUATION OF WORK IS BY MEANS OF A PROGRESS INSPECTION. X Date: Owner/Owners Representative/Contractor (indicate which one) FOR OFFICIAL USE BEYOND THIS POINT Accepted by: Planning Pd Ck# Date Bld Pd Receipt No. DEPARTMENTAL REVIEW APPROVED DENIED NOTES Building Department i Occ Group-Type Constr. Planning Department Environmental Health Department FEES Plumbing & Base Fee Site Ins ection Mechanical & Base fee UFC Plan Review Fee Wood/Gas/Pellet Stove Fee Other Violation Fee TOTAL FEES X. CIO 1 x f 8 - 1 3 x x cl , 4 28 , 9 ` Ifl(;tc> F— pL P•N APPROVED _ M ON OUNT�' DCD PLANNI SITE P RED T ONAN REQUI f �\ ?� QQ''�� ITE CHA GE5 SUBJECT TO-APPROV S�AL Q MARLEY L. YOUNG, CONSULTING ENGINEER P.O. BOX 1343, SHELTON, WA 98584-0959 Ci vi I Engineering (360)426-7475-(360)490-0939- Fax (360)426-5789 Stornwdter Site Plana mlyoung3542@comcast.net sewer Extensions Marley L. Young, P.E., P.L.S. a Civil Engineer& Land Surveyor o IIII IIII � 11-Dec-06 Mason County Planning Department Subject: Flood Elevation Calculations for Art Tozier Flood Protection Plan Dear Planner: Art Tozier is the owner of property in the Skokomish Valley, located in the southeast quadrant of the intersection of the West Bougault Road and the Skokomish Valley Road. Mr.Tozier is attempting to protect his home from flood damage by importing fill. The County has stated that they can issue Mr. Tozier a Land Modification Permit if he is able to satisfy the counties criteria. The criteria is paraphrased as such, 'The fill must have no impact on the nearest insurable structure or his property line,whichever comes first." No impact has been defined as 0.0499 feet rise in water elev. for a i 00-year 24-hour storm event. The County's Skokomish River Comprehensive Flood Hazard Management Plan, KCM, Inc., Feb. 1997, and the Walker&Asso. Digital terrain maps have been used as a reference. Cross section 32 shown on figure 6-2b, Volume 1, of the Flood Hazard Plan. At the 100-year flood event the calculated flood elevation is 33.43'. The 100-year flow rate is 34,910 cfs. Cross section 32 is approximately 4,693 feet long and has an end area of 19,646 sq. ft.. Assuming that the 100-year flood event produced a flood cross section at cross section 32 with a constant, uniform flow and a flood elev. of 33.43 feet, Mr.Tozier's proposed plan could reduce the cross sectional area of 19,646 sq.ft. by 234.18 sq.ft., and be in compliance. Length of cross section= 4693 X the allowable rise 0.0499 Total cross section area in sq. ft. 234,1807 1 of 3 2 of 3 If Mr. Tozier is allowed to complete his flood protection plan, his home will be 6' above the 100-year flood elevation. The proposed fill which is included as part of this Permit Application will have a cross sectional area of less than 200 sq. ft. During a 100-year storm event, it is expected that the storm water will cross the Skokomish Valley Road south of the intersection with the West Bourgault Road and head directly for the Tozier improvement. The flood waters will split and flow around the improvement and join on the east side of his fill. As the water splits, it in effect'turns a comer. The calculated increase in water elevation caused by the water turning the corner is next to be analyzed. For a more accurate and reasonable review, the flood way has been reduced to a cross section being 160'wide, that puts the Tozier fill in the middle of the section. Vertical sides and a top elev. of 33.43 ft. The Tozier fill has been placed on ground having an old elevation of 29.0 ft. 100-year, 24-hour storm event elev. 33.43 Assumed depth of flood water to be 4.43 ft V= 1.486/n *r^.667 *s^.5 n = 0.15 very weedy width 160 d= 4.43 a= area 708.8 sf p= wet perimeter 168.86 r= a/p 4.19756 s= 0.006 SA = 0.07746 1.486/n = 9.906667 (1.486/n)*(s^.5) 0.767367 rA 667= 2.603388 V= 1.997755 Q = Vla 1416.008 v = Q/A d 1 = y 4.43 NF = v/ (gy)^.5 w= width 160 Ay= v^213/gr g = 32.2 B 160 Radius 50 Q = 1416.008 cfs A= 708.8 3fo3 v = Q/A 1.997755 fps NF = v/(gy)A.5 0.167268 less than 1 = subcritical flow= ok Ay= ((VA2)*B)/gr 0.396623 As the water turns to go around the Tozier fill, the water against the fill will rise by 0.40 ft. The following tabulation is to determine the distance from the fill to where the flood water would return to the original elevation of 33.43. If the calculated distance is shorter than the distance to the County Road right of way, then the fill can be approved because there would be no negligible impacts to abutting properties. Shortest distance to West Bourgault Rd. is 160 ft. y A=(160y) p, R(A/p), v VA2/2g, s distance ft ftA2 ft ft ft ft x 4.83 772.8 169.66 4.554992 �.132 0.070581 0.0057 -136.204 4.43 708.8 168.86 4.19756 1.9977 0.061969 0.0087 136.2 is shorter than 160 = ok Based on the above review the Tozier Flood Protection Plan will have no affect on Roads or neighboring property. Submitted by r�`�oF wA Marley L. Youn E., P. S , O� Consulting Engineer Na �, 14144 R� �� PR❑P❑SED FL❑❑D PR❑TECTI❑N PLAN CR❑SS SECTI❑N AREA EQUALS 170 SF. 33,43 33,43 29,0 29,0 N❑RTH THE EXISTING FILL CR❑SS SECTI❑N AREA ❑F IMP❑RTED MATERIAL BEL❑W THE 100 YR FL❑❑D ELE V, EQUALS 326,35 SF, SCALE 1" = 20' f VOLUME OF NEW FILL TOP TIER A= PIwR^2 25' 35' Rtop = ((25+19)/2) _ 22' A = 1520.5 SF VOLUME = A*D D = DEPTH = 3.54' V= 5382.7 cf 1/2V = TWO CORNERS = 2691,35 cf 40' LOWER TIER A= PI)KR^2 Rlower = ((29+23)/2) = 26' A = 2123.7 SF VOLUME = AwD D = DEPTH = 3.54' 35' V= 7517.9 cf 1/2V = TWO CORNERS = 25' 3759.0 cf TWO ROUNDED CORNER VOLUME: 2691.35 + 3759.0 = 6450.35 STRAIGHT LENGTH 90'-25'-25'= 40 STRAIGHT VOLUME 40)K170= 6800 cf SUM OF VOLUME 6800cf + TOP TIER 6450,35cf = 13,250.35cf 25' 19' S4 VOLUME IN CUBIC YARDS = 3,54' 490.75 CY N : 0 200' 400' 600` 800'1,000' H i r■s��■1:.� 5 £SCALE:V a-1,000' ' itl 65 0 ■ m sl O 9E 040 I 40 �' E ■ 33.0 /� �'••:yr 'ems..... - o ao 0 O SKOKOMISH d , ■ ` Q e ■ `�y `' Ir . ■ M ao dN 39 ° 0 +L e O W, RGAULT '25 30 16 0 / 26 y ■ L 38 a n 37.90 37 ti - 3 36 35 s 30 34.91 33 _ 33.784 Geo Adams 33. i S11hion H ch—ry 0 i Water surface elevations for Sections 22-32 are for the main channel. Elevations for 34 3i 30 the North Overflow,Weaver Creek and Purdy Creek are 33.35 29 28 6 ' not shown on this figure. 27 Mason County KCM SKOKOMISH RIVER COMPREHENSIVE I 1917FirstAvenue HAZARD MANAGEMENT PLAN C....al., U/achin�nn QR1M i MARLEY L. YOUNG, CONSULTING ENGINEER Q P.O. BOX 1343, SHELTON, WA 98584-0959 360.426.7475-360.490.0939-Fax 360.426.5789 . 'Civil Engineering mlyoung3542@comcast.net site Plans Marle L. Youn , P.E., P.L.S. SewExnsions y 9 o Civil Engineer& Land Surveyor II ) Mr. Art Tozier 110 Mill Street Shelton, WA 98584 Re: 401 West Bourgault Road Rock Retaining Wall Investigation Dear Mr. Tozier: This letter summarizes the findings of the site inspection conducted on March 17, 2009 to investigate the retaining wall system constructed around the Tozier residence located at 401 West Bourgault Road. This investigation was conducted to determine the rock sliding resistance,overturning resistance and bearing capacity of the retaining wall system. Information was gathered at thirteen locations along the rock retaining wall. The three attached documents provide a review analysis to each of the thirteen locations. Based on the investigation and the resulting engineered analysis the rock wall configuration is stable and well within safety factors accepted by the engineering profession. We appreciate this opportunity to be of service to you. If you have any questions,or if we can be of any further assistance please let us know. Thank you, Marley L. Y ,P.E P .S. 11.1 Q Attachments. 14144 �' 17-Mar-09 ART TOZIER 401 West Bourgault Rd. Shelton WA 98584 RE: EXISTING COHERENT STONE GRAVITY WALL RETAINING WALL ANALYSIS-401 WEST BOURGAULT RD. CIVIL ENGINEERS ANALYSIS OF A GRAVITY ROCK WALL TWO TO FOUR MAN ROCK - UP TO 4.5 FEET HIGH - TOP ROCK APPROX. 12 INCHES DEEP BOTTOM ROCK APPROX. 20 INCHES DEEP This portion of the rock wall is along the west well and is 4.5'Tall -- The proposed rock retaining wall is being reviewed for sliding resistance, overturning resistance, and bearing capacity. The slope of the existing soil is estimated to stand at 4.5' vertical to 1' horizontal. t ft = Wall depth at top 1 d ft = Wall depth at base 1.66 H ft = Wall height 4.5 Batter inches 8 Batter ft = Soil Face degrees 8.4 Batter Front face tangent 0.147667 sp gr 3 Man Rock Void Ratio 62.2 186.6 0.7 Yw = Wall Density pcf = 130.62 Ys = Soil Density pcf = 124 Ys/wet = Wet Soil Density pcf 124 0 = Angle of Internal Friction 32 Cos = 0.848048 Sin 0.529919 Ow= Factored friction Angle 40% 12.8 Qs = 3000 i = Slope above wall 0 Surcharge None B = Wall angle at back side 81.6 Tan(90-B) 0.147667 --------------------------------------------------------------------- SLIDING RESISTANCE Page 2 of 3 KA=Active pressure coefficient csc(B) *Sin (B- 2 KA = Sin (B+ �w)�A.5 +((Sin (0+ Ow) Sin (0-i)1 J.5 LO Sin (B + i) 1 0.769796 0.998525 + 0.614368 KA = 0.227793 FA = Active force on wall = .5 (Ys) *(KA) * H A 2 = 285.9941 W =Total weight of Wall =( Yw*H*t)+(((Yw*H*(d-t))/2) = 781.76 Wt= Weight of rock rectangle t width 587.79 Wb= Weight of rock triangle section b-t/2 193.9707 Fv = Vertical force on wall from retained soils _ _ 1 6 FA (Sm(�w) G3 3G 5 Fh = Horizontal forces on wall from retained soil = FA(Cosin(ow) _ ) 278.887 Fr= Force resisting sliding = (W+ Fv)Tano= 528.091 Safety factor against sliding: SFS= Fr/Fh 1.893566 > 1.5 OK Note: safety factor is greater than 1.5- Design is OK --------------------------------------------------------------------- --------------------------------------------------------------------- OVERTURNING RESISTANCE Mo = Overturning Moment= Fh(.33)H 418.2886 Mr= Moment resisting overturning = Wt* Moment arm. Wt*(d-t)+(t/2)+((h/2)*)Tan90-B)) 877.1303 Wb*Moment arm. Wb*(d-t)/2)+((H/3*Tan90-B)) 106.975 Fv*Moment arm. Fv* ((b+(H/3)*Tan90-B) 119.2148 Mr= 1103.32 Safety factor against overturning: SFO= Mr/Mo= 2.6377 >2.0 OK Note: safety factor is greater than 2 -Design OK --------------------------------------------------------------------- --------------------------------------------------------------------- BEARING CAPACITY Qw= Pressure exerted on soil below base block= (W+Fv)/d = 509.1098 Qs= 3000 Safety factor against bearing failure FSB =Qs/Qw = 5.892639 >2.0 OK Note: safety factor is greater than 2- Design OK --------------------------------------------------------------------- --------------------------------------------------------------------- ti Page 3 of 3 ANALYSIS: Our Analysis is based on a review of the internal and external stability of the wall and DOES NOT INCLUDE either global or seismic analysis CONTRACTOR RESPONSIBILITY: The contractor is expected to have used due care in properly setting and installing the rocks. Also the contractor is expected to have properly installed the drainage according to acceptable standards_ CHANGED CONDITIONS: The conclusions and recommendations in these engineering calculations are based on my interpretation of information found in the field. In the event that the scope of the project, surface/subsurface or contractual conditions differ from those relied on in these calculations, the civil engineer and the soils engineer should be advised immediately. A review of the changed conditions will be conducted and alternative or remedial recommendations given at that time. ENGINEERS CERTIFICATE: This 4.5 foot high rock wall configuration is stable and well within safety factors. I hereby certify that the engineering shown in this document was performed by me or under my direction. Marley L. Young, P.E., P.L.S., Consulting Civil Engineer P.O. Box 1343 Shelton, WA 98584 360 426-7475 �l<% r ��} 14134 Project No. 2009-13 n tat '�j 5�1CP -�Ocyl N , q Ic s \ a 1�