1018 14TH ST 2023-02-09 - Laserfiche WebLink

Alignment A q (surcharge) Assumed Ground Surface H-300 Y=110 pcf If Elev.17.5 Feet - - - Elev.11 Feet Assumed High Water Very loose to medium dense, Level Behind Wall Ignore Upper 3 Feet graylbrom,slightly silly,fine Assumed Mean Low Water 9 PP - to medium SAND,scattered Y=110pcf Elev.0 Feet -_. Z_ organics and debris(Hf,Ha) 580 .� + y'=46 pcf (Potentially Liquefiable) 28° Slope Inclination Vanes,See Table 1 T (Seismic Case Only) Assumed Mud Line 780 40C, Elev.-12 Feet -- - --- - -- - 2750 - 570 0.4q � 125 pcf Dense to very dense. + y= gray,silly fine SAND STATIC y'=61 pcf 8010 - (Ha.He) - 760 SURCHARGE �'=36° PRESSURE Elev.-25 Feet - - _. -. _- T _. - � 75 10100 - 630 SEISMIC Very dense. INCREMENT gray,slightly y=130 pcf D silty,fine to medium SAND NOTE: 66 pcf y'= (OPn� A horizontal seismic 0'=40° coefficient of 0.12 times gravity was used to develop the seismic surcharge for a 200-year seismic event. 10100+550D 630+13D—+{ 130►{ ULTIMATE PASSIVE SOIL ACTIVE UNBALANCED ASSUMED EARTH PRESSURE DESCRIPTIONS EARTH PRESSURE WATER PRESSURE SOIL (See Note 8) PARAMETERS NOTES Not to Scale 1. These lateral earth pressures shown are for the case of a new sheet pile bulkhead constructed behind the existing bulkhead. Table 1.See Note 5 2. All pressures are in units of pounds per square foot(psf).Components of the pressure behind the wall should be added to get the total pressure on the wall for each loading case. Slope C,Value 3. Active and passive earth pressures are shown per unit width for sheet pile walls. Active lateral earth pressures should be 2H:1 V 11 used for flexible wall systems that are able to displace at least 0.001 times the height of the wall. If the wall does not displace at least 0.001 times the height.the earth pressures should be reevaluated. LEGEND 3H:1 V 19 4. Earth pressures are based on either a cantilevered wall system or single anchor wall system. - Assumed or Measured Water Level 4H:1V 24 a 5. Select coefficient(C,)based on the slope in front of the retaining wall. D Depth of Penetration in Feet Below Elevation - 14th St&16th St-Marina District LL 6. The assumed soil profile is generalized from the soils described on current and previous boring logs.Variations between the Square Foot Port of Everett Surcharge Pressure in Pounds Per S 4 profile and actual subsurface conditions may exist. q g q Everett,Washington 7. Earth pressures are based on the dimensions and elevations shown.If different elevations(such as elevation of top of the y Effective Unit Weight mudline slope in front of the wall)are used for design,the earth pressures shown on this figure would not be applicable.and RECOMMENDED h should be revised based on the final configuration of the bulkhead and adjacent slope. y Total Unit Weight LATERAL EARTH PRESSURES 9 8. The provided passive earth pressures are ultimate values. For allowable,these values should be reduced by a factor of safety of 1.5 for static case and a factor of safety of 1.0 for seismic cases. Alternatively.the passive earth pressures can be �' Effective Friction Angle FOR SEGMENTS A,B,AND C h reduced by a mobilization factor as described on Figure 8. January 2014 21-1-21761-003 V545 Westi emated the seismic increment using the Mononobe-Okabe Method for a 200-year seismic event with a horizontal 545 Active Earth Pressure(See Note 2) seismic coefficient of 0.12 gravity,about half the peak ground acceleration. SHANNON bWILSON,INC. FIG.5