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20060901100220.pdfo �Do City of Edmonds PLAN REVIEW COMMENTS BUILDING DIVISION FS r, a9° (425) 771-0220 DATE: September 1, 2006 TO: Randall J Munson Randy.munson@comcast.net FROM: Jenny Readwin, Plans Ex ine RE: Plan Check # 2006-0924 Project: Falcon Ridge SFR Project Address: 8012 240t' St SW During review of the above noted application, it was found that the following information, corrections, or clarifications are needed. Please redline plans or submit two (2) sets of revised plans/documents (affected sheets only) with a written response to each of the items below to a Permit Coordinator. 1) Specify on the elevation views the grade slope away from the building. If minimum 6" within 10' is not possible or habitable or useable space is below grade, foundation drainage is required. Provide footing drain detail on foundation sections complying with R405.1 and show required drain locations on the foundation plan. 2) According to the Critical Areas Determination this property is located in a critical area and per our Rockery handout (attached) any rockery located in a critical area must have plans designed consistent with ECDC Chapter 23.80 and stamped by a Washington State Licensed Professional Engineer. Provide stamped and signed rockery construction details. 3) See attached structural comments from city consultant. Respond to each item in writing. Eagle Eye Consulting Engineers, P.S. PO Box 523 Olalla, WA 98359 hoytjeter@centurytel. net 360 874 0562 Fax 360 874 0591 To: JoAnne Zulauf City of Edmonds Edmonds, WA 98020 Re: Michel SFR Falcon Ridge 8012 240"' Street S.W. Edmonds, WA 98020 Plan Review #2006 0924 21 Date: August 212006 EECE # EDM 06-42 The above referenced project is in the process of plan review for compliance with Edmonds ordinances and applicable codes. The following comments, deficiencies/corrections must be addressed prior to completion of plans review and subsequent issuance of permits. Provide revised plans and calculations along with a written response to each of the items listed below to facilitate a shorter back -check time. SCOPE OF REVIEW The scope of this review is for the Structural requirements of this project. All features were checked only to the extent allowed by the submittals provided. All portions of this project are assumed to meet or will meet other departmental requirements, conditions and concerns before permit approval. v-, Lower floor 697 First floor 1608 Second floor 1364 Total 3669 Garage 987 Total 4656 Deck ABG 30" 200 Grand total 4856 EECE # EDM 06-42 The above referenced project is in the process of plan review for compliance with Edmonds ordinances and applicable codes. The following comments, deficiencies/corrections must be addressed prior to completion of plans review and subsequent issuance of permits. Provide revised plans and calculations along with a written response to each of the items listed below to facilitate a shorter back -check time. SCOPE OF REVIEW The scope of this review is for the Structural requirements of this project. All features were checked only to the extent allowed by the submittals provided. All portions of this project are assumed to meet or will meet other departmental requirements, conditions and concerns before permit approval. Page 2 of 4 EECE#: EDM 06-42 STRUCTURAL COMMENTS General 1. Please provide detail on the drawing for the framing of the deck. The deck will be over 30" above grade and details are required to be added to show compliance with the code. IBC 1607.1 item 27, IRC R301.5 and IRC R312 Sheet A-7 FOUNDATION PLAN & DETAILS: 2. Please specify the required connection of the base of the 6X6 wood post used in the garage. Detail 2 on sheet A8 is for the construction of the wall framing and not the column support. I assume the intent was to use section 2 on AT Please modify accordingly.R407.3 3. Please specify the required connection of the post at the covered entry. IBC 2304.9.7 4. Provide calculations for the basement wall. Per a check of analysis the footing is not large enough to resist the horizontal force from the soil pressure. The rigid insulation can not be used to resist this force and the footing must be designed to resist the horizontal forces with a safety factor of 1.5. IBC 1806 Sheet A-8 MAIN FLOOR FRAMING PLANS & DETAILS: 5. Architect of Record (AOR), please specify the required post to beam connections. For example, the diagonal 5-114X11-718 Parallam. IBC 2304.9.7 6. Shear wall & hold-down notes: Footnote 3: It appears that double the amount of anchor bolts were not used so therefore a nominal 3x member must be used. Also, please clearly label where footnote 3 is to be used for which shear wall. Please modify accordingly. IBC 2305.3.10 7. Shear wall & hold-down notes: Please modify footnote 7 to state single 3x member shall be used at abutting panel edges. IBC 2306.4.1 footnote i. 8. Please clarify on the drawings where the raised shear wall information is specified. I assumed it was to be the lateral wall detail on sheet A-9 but it is not referenced that way. Please modify drawings accordingly. 9. The design analysis used a height for the overturning moment for SW 4 to be 8 feet. This is not correct based off the stairway. Please modify the analysis to account for the height based off the opening in the floor. IBC 2305.3.4 Also, it appears the length (width) of wall used was 8 feet but the wall scales to 6 feet. Please add the required length of this wall on the drawings. IBC 2305.3.5 Page 3 of 4 EECE#: EDM 06-42 10. Please provide a detail on the drawings for the connection of the shear wall SW4 to the double joist shown on this level. How are forces being transferred at this location? Since the wall does not line up details must be added to transfer the shear force and the overturning force must be detailed on the drawings. It appears this has not been addressed in the submitted drawings. IBC 2304.9.6 and IBC 2305.1.2 Sheet A-9 UPPER FLOOR/LOWER ROOF FRAMING PLAN: 11. Shear wall & hold-down notes: footnote 3: It appears that double the amount of anchor bolts were used so therefore a nominal 3x members must be used. Also, please clearly label where footnote 3 is to be used for which shear wall. Please modify accordingly. IBC 2305.3.10 12. Shear wall & hold-down notes: Please modify footnote 7 to state single 3x members shall be used at abutting panel edges. IBC 2306.4.1 footnote i. 13. Please specify the required connections for the flush framing specified on the drawings. I was unable to determine the required connections from the drawings. IBC 2304.9.6 14. AOR, please specify the required post to beam connection. For example, the diagonal 3 1/z X 11-7/8 Parallam. IBC 2304.9.7 15. The shear wall width used for shear wall 5 appears to use the fail diagonal width when used to resist the lateral forces. The width must be used in the direction of the force. Please modify or clarify how this accounted for in the analysis. IBC 2305 Sheet A-10 UPPER ROOF FRAMING PLAN & DETAILS: 16. Shear wall & hold-down notes: footnote 3: It appears that double the amount of anchor bolts were used so therefore a nominal 3x members must be used. Also, please clearly label where footnote 3 is to be used for which shear wall. Please modify accordingly. IBC 2305.3.10 17. Shear wail & hold-down notes: footnote 3: Please modify footnote 7 to state single 3x members shall be used at abutting panel edges. IBC 2306.4.1 footnote i. 18. Please specify the required connections for the flush framing specified on the drawings. I was unable to determine the required connections from the drawing. IBC 2304.9.6 19. AOR, please specify the required post to beam connection. This should include the connection required of the girder trusses to the multiple studs. Typically the truss manufacturer does not specify this and leaves it up to the designer. IBC 2304.9.7 Page 4 of 4 EECE#: EDM 06-42 20. Engineer of Record (EOR), please provide calculations for the (2) 2x6 at one end of the girder truss and (2) 2x6 at the other end. Submit an analysis at these locations. There are other locations where one side specifies more studs than the other. Based off the location of point loads and uniform loads the force is not that great and the (2) studs appear to not be able to support the vertical loads. Sheet A-11 DETAILS & GENERAL NOTES: 21. FOR, please specify the required axial force the truss manufacturer is required to design for to transfer the lateral loads to the vertical resisting elements. Additional corrections may be required following receipt of corrections and additional information as requested. Your plans are being reviewed concurrently with the Building Department, Fire Department, Zoning Department and Public Works Engineering. Changes, clarifications or additional corrections may be required subsequent to the Building Department plan review when comments are received from the other concerned departments. Should you have any inquiries regarding this letter, please contact Hoyt ,Teter at (360) 874-0562 between 5:00 a.m. and 5:00 p.m. By: Hoyt Jeter, P.E. President .. s #0 city of edmonds development information Inc. 1890 Rockery Permit Submittal Requirements PERMIT REQUIRED: A permit is required for rockery construction unless specifically exempted as described in this handout_ Any rockery located in a Critical Area or its buffer, or Earth Subsidence Landslide Hazard Area (ESLHA), as defined by the Edmonds Community Development Code, must obtain a permit regardless of height, mass or length. CODES: International Building.Code (Current Edition) WSDOTiAPWA Standard Specifications for Road, Bridge & Municipal Construction (Current Edition) ECDC Chapter 18.30 & 18.40.020, ECDC Chapters 19.00 & 19. 10, and ECDC Chapter 23.80 City Ordinance #2916 FEE: Permit fee 5265 + $15 City surcharge $50 Per Required City Inspection Some projects may require Peer Review. Additional Peer Review fees are $110 + Cost of Consultant Review to be paid by the applicant SUBMITTAL REQUIREMENTS: (See Page 5) 1. A Critical Areas Determination, issued by the Planning Division (See Handout V20) 2. Soils Investigation or Soils Report --Three (3) copies, stamped and signed by a Washington State licensed geotechnical engineer or engineering geologist. 3. Grading Plan - Three (3) copies, with yardage calculations 2. Plot Plan -Three (3) copies, scaled 1"-20' one of the three plot plans must be no larger than 81/2" x 14" 5. Rockery Section and Elevation Views - Two (2) copies, stamped and signed by a Washington State licensed. engineer. 6. Rockery Design Calculations - Two (2) copies, stamped and signed by a Washington State Licensed Engineer 7. Erosion and Sedimentation Control Plan - Three (3) copies. 8. For rockeries in critical areas or in the ESLHA, a letter from the geotechnical engineer addressing the criteria of ECDC 23.80.070. L:ITEMPOUILDINGIHANDOUTI' ICODP,MOCKER'Y B63.DOC Revised 06106 Page I of 9 INTRODUCTION The City of Edmonds does not consider rockeries to be retaining walls. Different and more restrictive structural standards apply to retaining wall construction. (See Handout #B62) Rockery construction is a craft and depends largely on the skill and experience of the licensed contractor performing the work. Rockeries have long been used for erosion control and as landscaping features. The long term stability, durability and safety of rockeries are dependant on the use of proper construction methods and materials. HEIGHT DEFINITIONS Rockery Height. For permitting_pMoses, rockery heights are defined as the height measured vertically from the finished grade at the toe of the rockery to the highest point of the uppermost rock. See City of Edmonds standard detail E 8.9, attached. Setback Area Height. For setback purposes, rockery Setback Area Height is. defined as the height measured vertically from the original grade to the highest point of the uppermost rock. See City of Edmonds standard detail E 8.9, attached. PERMIT REQUIREMENTS A rockery permit shall be required when any of the following conditions apply: 1. Rockeries eight (8) feet in height or greater. • Plans must be designed (including design calculations) and stamped by a Washington State Licensed Professional Engineer. • Peer review and special inspection is required. • Rockeries are limited to a maximum height of twelve (12) feet for cut slopes. • For sloped cuts that exceed twelve (12) feet in height refer to separate Retaining Wall handout (#B62) for requirements. 2. Rockeries of my het t located within the designated Earth Subsidence Landslide Hazard Area as defined by the Edmonds Community Development Code (ECDC). • Plans must be designed consistent with ECDC Chapter 23.80 (including design calculations) and stamped by a Washington State Licensed. Professional Engineer. • Peer review and special inspections are required (regardless of height). 3. Rockeries of any height located in a Critical Area or its buffer. • Plans must be designed consistent with ECDC Chapter 23.80 (including- design calculations) and stamped by a Washington State Licensed Professional Engineer. • The City reserves the right to require peer review and/or special inspections for all rockeries in critical areas or their buffers. Whenever a rockery exceeds 6 feet in height, peer review and special inspections will be required. 4. Terraced rockeries are permitted subject to the conditions noted above (1-3) • Each terraced rockery tier is considered to be a separate rockery. • A permit is required if any individual tier requires a permit or if the combination of tiers is not built in accordance with the prescriptive installation design standards described in this handout and attached diagrams. L.WEMPWILDINGWANDOUT 1CODESIROCICERY BOMOC Page 2 of 9 Revised 06106 • The upper rockery tier shall be setback from the lower rockery tier a distance equal to or greater than the height of the lower rockery tier. See attached Standard Details E8.9 _ and E8.10. • If the distance between the upper rockery tier and the lower rockery tier is less than the height of the lower tier then the lower tier shall be considered to support a surcharge from the upper tier, which is not permitted. EXEMPTIONS FROM PERMIT REQUMEMENTS: A rockery permit is not required if it is not located in a Critical Area (or its buffer) or designated Earth Subsidence Landslide Hazard Area AND for the following rookery design conditions: 1. Rockeries less than eight (8) feet in height are exempt from permit requirements provided, the rockery is designed for erosion protection purposes only, and is placed against an existing out slope and provided that none of the conditions above (1-4) apply. See Rockery Height Definition above. • Such rockeries shall be installed in accordance with the prescriptive installation design standards described in this handout and attached diagrams. 2. Rockeries that retain filled slopes to a maximum height of three 3 feet. 3. For rockeries proposed for construction as partof a subdivision or short plat, a separate rockery permit is not required. Approval of the subdivision/short plat civil drawings will constitute approval of the rockery. However, such rookeries shall be designed, reviewed and approved based on the requirements of this handout. GENERAL REQUIREMENTS If any of the requirements below are not met, an engineered earth retaining wall structure is required (See Handout #B52). The City retains the right to require an engineered earth retaining wall structure for proposals located adjacent to the City right-of-way. • The maximum allowable height above finished grade at the toe of the rookery shall be twelve (12) feet. • The cut slope behind the rockery shall be free standing and the soil behind the rockery shall be firm, stable, undisturbed, and competent native soil. • The slope behind the top of rockery shall not be steeper than 2:1 (Horizontal:Vertica.l). See City of Edmonds standard detail E 8.9, attached. • The slope (batter) of the rockery shall not be steeper than 1:6 (Horizontal: Vertical). See City of Edmonds standard detail E 89, attached. • Rockeries on private property adjacent to City right-of-way shall be setback from the right- of-way ight- of way a minimum horizontal distance equal to the height of the rockery. • Roads, driveways, buildings, or any other conditions imposing a surcharge load shall not be located within a -horizontal distance equal to the height of the rockery. ROCKERIES-NOTPER UTTED (NOT .ALLOWED) • Rockeries are not permitted to be located in, on, or over (developed or undeveloped) City right-of-way. Rockeries encroaching shall be immediately removed by order of the Public Works Director. • Rockeries shall not be constructed over public utility easements, or be constructed to adversely affect drainage, or create a sight distance hazard. • Rockeries that support a surcharge are not permitted. L:ITEMPIBUJMJNGIHANDOUT ICODESIROCKFRY BO DOC Page 3 of 9 Revised 06106 • Rockeries that impound flammable liquids are not permitted.. • Rockeries exceeding three feet in Setback Area Height are not permitted. See Setback Area Height Definition above. • Rockeries exceeding three (3) feet in height shall not be placed against fill. GENERAL INSPECTION REQUIREMENTS • If the rockery is permitted as part of a building permit or as a separate rockery permit, the property owner must call for a Building inspection at the beginning and end of the project. • If the rockery is constructed as part of subdivision/short plat site improvements, the property owner must call for an Engineering Inspection at the beginning and end of the project. SPECIAL INSPECTION REQUIREMENTS • The Geotechnical Engineer of record shall verify conformance with the project specific rockery design including but not limited to; soil bearing conditions, contractor compaction methods, rock placement procedures, rock material and sizes, rock filter layer and gravel backfill for drainage, etc. • The Engineer shall also monitor and provide corrective action recommendations as needed. • Field reports shall be submitted to the Building Division for review and approval unless the rockery is constructed as part of subdivision/short plat site improvements then field reports are submitted to the Engineering Division for review and approval. L:ITEMPI13UILDINC44. NDOUT ICODES\ROCKERY B63.DOC Page 4 of 9 Revised 06106 1. CRITICAL AREAS CHECKLIST (See Handout #P20) A Critical Areas Determination, issued by the Planning Division, must be completed and on file with the City. Provide applicable information as indicated by the decision. 2. SOILS INVESTIGATION OR SOILS REPORT The classification of soil and design bearing capacity must be determined and called out on the plans based on observation and tests of the soil materials disclosed by borings or. excavations performed by a Washington State Licensed Professional Geotechnical Engineer or Engineering Geologist. Soils report recommendations shall be incorporated -into the rockery design and shall conform to the requirements of IBC 1802 and IBC Table 1804.2. Lots with rockery proposals located in the designated Earth Subsidence Landslide Hazard Area are subject to City Ordinance 42661 and Chapter 19.10 of the ECAC. 4. GRADING PLAN Three (3) copies, scaled 1"=20' (See Handout #B37) When fill or grading for the rockery exceed 50 cubic yards, a separate grading plan with. yardage calculations must be submitted (note additional permit fees shall be assessed). Exception: Grading in designated Critical Areas or within the designated Earth Subsidence Landslide Hazard Area require plans, review and additional permit fees regardless of the amount of grading or fill. The grading plan must show existing grade contours and proposed finished grades at two (2) foot intervals for lots with slopes of up to 15%. For lots with 15% slope or greater, show all grades at five (5) foot intervals. Clearly define grading limits and trees to be removed and/or retained. Detail permanent slope protection, indicate setbacks from top and toe of slopes, the slope of the lot and methods for temporary and permanent erosion control. Provide calculations and specify the number of cubic yards to be removed, filled, or graded. NOTE: When grading exceeds 499 cubic yards, a separate SEPA Checklist and APO list must be submitted for review, (a separate fee is required for SEPA review). 4. PLOT PLAN Three (3) copies, scaled l "=20', one of the three plot plans must be no Iarger than 8 112" x 14" with the following: (See kandout #B57) a) North arrow, property line dimensions, streets, alleys, driveways, parking areas, etc. b) Clearly show edge of City right-of-way, curb, gutter, sidewalk, street trees, etc. c) Detail public and private access and utility easements that, encumber the property *Provide copies of all recorded public utility easements d) Show location of existing house, garage, decks, etc. within the property e) Show.location of streams, creeks, drainage courses, etc. within the property f) Clearly show the proposed location of the rockery and distance to property lines g) Indicate top and bottom rockery elevations at 5 foot intervals to clearly show height of rockery along its entire length. LATEMABUI DINGWANDOUT ICODEs1ROCKERY E63 -DOC Revised 06106 Page 5 of 9 5. SECTION AND ELEVATION VIEWS - Two (2) copies, stamped .and signed by a Washington State licensed engineer, with the following: a) Provide a typical section view of the rockery. See City of Edmonds standard detail. E 8.9, attached. b) Show and call out size of proposed rock. See Table 2 on page six of this handout. c) Drainage piping (size, material, etc.) and backfill proposed. See City of Edmonds standard detail E 8.9, attached. 6. ROCKERY DESIGN CALCULATIONS Rockery submittals are required to be, designed by Washington Stated. Licensed Professional Engineers and shall include two (2) copies of the rockery design calculations. Calculations shall be stamped and signed and include: soils classification, unit weight of soil, allowable bearing pressure, active and passive earth pressures, liquefaction potential, coefficient of friction, seismic loads, site specific surcharge loads, water table information, and the maximum inclination of the cut slope at the toe and backside of the rockery. The engineer shall also specify rock specifications for the specific project. 7. EROSION AND SEDIMENTATION CONTROL PLAN Submit three (3) Erosion and Sedimentation Control Plans per ECDC 18.30. See City of Edmonds standard details E 1. 1, E 1.1.1 and E 1.3, attached. 8. LETTER FROM GEOTECHNICAL ENGINEER REGARDING ECDC 23.80.070. For rockeries located in critical areas or in the ESLHA, submit a letter from the geotechnical engineer addressing the criteria of ECDC 23.80,070. NOTE: THEN PURPOSE OF THIS HANDOUT IS TO ASSIST THE PUBLIC IN COMPLYING WITH DETAILEI} PERMIT SUBMITTAL RE UIREMENTS. IT IS NOT A COMPLETE LIST OF PERMIT OR CODE RE UMMENTS AND SHOULD NOT BE USED AS A SUBSTITUTE FOR APPLICABLE LAWS AND REGULATIONS_ IT IS THE RESPONSIBIL= OF THE OWNERMESIGN PROFESSIONAL TO REVIEW THE SUBMITTAL FOR COMPLETENESS APPLICABILITY TO OTHER CODES. ONLY COMPLETE APPLICATIONS WILL BE ACCEPTED BY THE CITY FOR REVIEW LATEMPW[LDINGTANDOUT ICODESIROCKERY 861DOC Page 6 of 9 Revised 06106 When a permit is required, the submitted plans, specifications, engineering calculations, diagrams, soil investigation report, and other data shall conform to International Building Code provisions. Design calculations require knowledge of the active soils behind the rockery, slope stability, surcharge loads, equivalent fluid pressure and physical properties of the soils. A soils report must be submitted by a state licensed geotechnical engineer for review with the rockery submittal. When fill is placed behind a rockery, the soil parameters for design are based on the knowledge of the proposed fill soils and the anticipated control of the compaction. Special inspection by a licensed geotechnical engineer is required to verify that the soils and compaction procedures are proper and the compacted soils properties achieve the design parameters. Rockeries should be designed based on engineering methods to prevent sliding or overturning between rocks or at the base. The required weight should be calculated above each one foot intersection to determine the friction necessary to resist sliding, or the moment to resist overturning. Rock design parameters should include the weight of the rock, the resistance to sliding between rocks, and the percentage of voids. Allowable voids will vary depending on the shape of the rocks; a maximum of 20% voids is allowed. Rock Material All rock shall be sound, angular ledge rock that is resistant to weathering. The rock material shall be as nearly rectangular as possible with the longest dimension of any individual rock not exceeding three times its shortest length. No stone shall be used which does not extend through the entire width of the rockery. The rock shall be hard, sound, durable, and free of cracks, weathered portions, seams, and other defects. See Table 1 for minimum rock specifications. The engineer of record trust call out rock specifications, for the project. Table 1 Item No. Test Criteria 1 Absorption Not more than 2% for igneous and ASTM C127 metamorphic rock types and 3% for AASHTO T-85 sedimentary rock types. 2 Accelerated Expansion (15 days) Not more than 15% breakdown CRD -C-148 *1, *2 3 Soundness (MgSO4 at 5 cycles) Not greater than 55 loss. ASTM C88 or CDR -C-137 4 Unconfined Compressive Strength Intact strength of 6,000 psi, or greater ASTM D 2938 5 Bulk Specific Gravity (160 pef) Greater than 2.48 ASTM C127 or AASHTO T-85 *1- Test sample shall be prepared and tested in -accordance with Corps of Engineers Testing Procedure CRD -C-148, Method of Testing Stone for Expansive Breakdown on Soaking in Ethylene Glycol. *2. Accelerated expansion tests shall include analysis of the fractures and veins found in the rock. LATEMN UILDINGWANDOUT ICOBESIROCKERY B63.DOC Page 7 of 9 Revised 06/06 Rock Sizes For rock sizes relative to the rockery height, refer to Table 2 below as shown on the attached diagrams. The rockery plans shall include the rock sizes to be used in the specific proposal. Approximate rock sizes are as follows: Table 2 Rock Size Requirements Size 'Approximate Weight Pounds Approximate Diameter (Inches} 2 -Man 200-700 18-28 3 -Man 700-2000 28-36 4 -Man 2000-4000 36-48 5 -Man 4000-6000 48-54 6 -Man 6000-8000 54-60 Rock Filter Layer The rock filter layer shall consist of quarry spalls with -a maximum size of four inches (4") and a minimum size of three quarters inches (3/4"). This material shall be placed with a twelve inch (12") minimum width between the entire facing and the cut slope. The rock filter material shall be placed in lifts with an elevation approximately six inches (6") below the top of each course of .rocks as they are placed, until the uppermost course is placed. Any rock filter material on the bearing surface of one rock course shall be removed before setting the next course: Quarry rock that is to be used as the rock filter layer shall meet the requirements defined below in Table 3: Table 3 U.S Standard Sieve Size Percent Passing By Weight 4" 100 2" 40 Maximum 314" 10 Maximum Gravel Backfill for Drains A system shall be designed to intercept ground water behind the rockery in order to prevent the erosion of soil. The intercepted groundwater shall be channeled to an approved drainage system. Specify all drainage materials (piping, type of backfill, etc.) on the drainage plan; note the backfill that surrounds the drainage pipe shall conform to WSDOTIAPWA 9-03.12(4) outlined Wow: Sieve Size Percent Passing P Square 100 --- 3/" Square 80 100 318" Square 10 40 US No. 4 0 4 US No. 200 0 2 1-1TEMMUILDINGUTANDOUT ICODESIROCKERY B63.DOC Page 8 of 9 Revised 06106 ROCKERY CONSTRUCTION Keyway A keyway consisting of a shallow trench shall be constructed the entire length of the rockery. The minimum keyway depth shall be the larger of twelve inches (12") or half the diameter of the largest rock (whichever is larger) to be used in the bottom course of the wall.. The keyway shall also be slightly declined toward the face that is to be protected and shall be excavated for the full rockery width, including the rock filter layer. The keyway subgrade shall be firm and is subject to inspection and approval by the Engineer of record when required by the City. Underdrain A minimum six inch (6") diameter perforated or slotted drainpipe shall be placed in a shallow excavated trench located along the inside edge of the keyway. The pipe shall be placed on and surrounded by approved backfill material to a minimum height of eighteen inches (18") above the bottom of the pipe. A filter fabric shall surround the gravel backfill and shall have a minimum of twelve inch (12") overlap along the top surface of the gravel. The Engineer of record may waive this requirement for fabric if shown that soils and water conditions make it unnecessary. The perforated drainpipe shall be connected to the storm drainage system (other than detention) or an approved outfall. Rock Selection and Placement The base course of rocks shall be bedded on firm, undisturbed earth (or prepared keyway as required) and shall be in full contact with the soil. Additional shaping of the earth surface may be required to achieve full soil contact. All rockeries shall be constructed in a manner such that no continuous joint planes are present in either the vertical or horizontal direction. Rocks shall be placed such that the longitudinal axis of the rock is at right angles to the face. Each rock shall be supported by at least two rocks in the course below. Whenever possible, rocks should be placed to achieve bearing between flat rock surfaces. Rock selection and placement shall minimize voids. Voids in the exposed face shall not exceed six inches (6") across in any direction.. After the setting of each course, the voids shall be "chinked" on the backside of the wall using quarry rock to eliminate any voids sufficient to pass a two inch (2") square probe. Backfilling Backfilling is critical. The purpose of the fill material is to hold the natural soils in place without allowing the soils to shift or to erode the rockery voids. The rockery plans shall indicate the number of cubic yards of fill material that will be used on the project.. LATEMPIBUILDINGIHANDOUT ICODESIROCKERY 1363.DOC Page 9 of 9 Revised 06106 FILTER FABRIC SECURED TO 2' X 2A 14 GA. WIDE FABRIC EQUAL 20 X L' WOOD OR I o EQUIVALENT—'\,,N GA_ IEA41E4 I-I '=I I I& I I I c. HA PLACE 3/4'-I,5' WASHED GRAVEL IN THE TRENCH AND ON BOTH SIDES OF FILTER FABRIC FENCE ON THE SURFACE. a O I 0i FILTER FABRIC MATERIAL.IN C©NTIN❑US ROLLS, USE STAPLES OR WIRE RINGS TO ATTACH FABRIC TO WIRE. ■[[■S ■[f■g ■[i■[ TO SUPPORT ■E■■w ---4--E-- 44........_ II BURY BOTTOM OF FILTER II MATERIAL 8' TO 12" II II - 6' MAX,LJ I I I I 2' X 2' WOOD POSTS OR . EQUIVALENT C❑NTRACTOR/BEV ELOPER SHALL MAINTAIN AND REPLACE STRAW BALES TO INSURE PROPER EROSION CONTROL, ld9Q-199u CITY INSPECTION REQUIRED ON ALL EROSION CONTROL METHODS BEFORE OTHER WORK CAN BEGIN, REVISIONS STANDARD DETAIL APPRUVED BY DATE FILTER FABRIC FENCE FILTRATION SYSTEMS RATE 7r24i01 1 NTS SCALE DWG No. E1.1 BINDING, WIRE OR TWINE EXCAVATE TRENCH 8" DEEP II ___ i i WHERE STRAW BALES WILL t I - BE PLACED AND STAKE BALES, COMPACTED SOIL TO ---III-� PREVENT PIPING '- If -- I I- T --I 1 ! ! E- �- -1 1-L-1 I 1- --I I I-� I l---! --� TTI CROSS SECTION OF 'A PROPERLY INSTALLED STRAW BALE BARRIER TWO STAKES PER BALE TO MAINTAIN P❑SITI❑N r y ✓' /-- STRAW BALES AS REQUIRED. f � PROPER PLACEMENT OF STRAW BALE BARRIER IN A DRAINAGE WAY CONTRACTOR/DEVELOPER SHALL MAINTAIN AND REPLACE STRAW BALES TO INSURE PROPER lER❑SI❑N CONTROL. CITY INSPECTION REQUIRED ON ALL ER❑SI❑N CONTROL METHODS BEFORE OTHER WORK CAN BEGIN, REVISIONS STANDARD DETAIL APPRWED BY DATE STRAW BALE DAM FILTRATION SYSTEMS 890-199 DATE 7/24/01 SCALE NTS DING N0. E1.1.1 Am. FILTER S❑CK WITH OVER FLOW HOLES a 4 4• CATCH BASIN TE ao a' d• ' • a STRAW BALES %MAY BE USED IN CERTAIN CIRCU9,CJANCES (SEE a. DETAIL E1.1.1), - THIS APPLICAITON SHALL BE MAINTAINED AT ALL TIMES DURING C❑NSTRUCITON PERI❑D, CITY INSPECTION REQUIRED ON ALL EROSION CONTROL MEASURES BEFORE WORK CAN BEGIN, REVISIONS STANDARD DETAIL pPPRpVEB BY DATE D. GEBERT 10/6/03 19/0 TEMPORARY SEDIMENT TRAP FOR CATCH BASINS D. GEBERT 45/19/05 A GEBERT 05/05/06 DATE =NTS DWG HO.1896-1 cigQ 7/24/01 E1.3 a 1 FT MIN WIDTH BETWEEN ROCKS AND EXCAVATION, PROVIDE SWALE, GRADE AND DRAIN TO APPROVED SYSTEM. 12" OF COMPACTED SOIL OVER GEOTEXTILE UNDISTURBED NATIVE SOIL ROCK FILTER LAYER, _E F :J 12" MINIMUM WIDTH QUARRY SPALLS --A 3/4" TO 4" IN SIZE ` GEOTEXTILE FILTER FABRIC io MIN E" DIA PERF RIGID DRAIN PIPE CENTERED — HORIZ. IN BEDDING. SLOPE TO DRAIN AND CONNECT TO STORM DRAIN SYSTEM. PROVIDE CLEANOUTS. SLOPE TO DRAIN >— EXISTING/ORIGINAL GRADE % SL E 0 IF RQCKERY ABUTS A PRIVATE DRIVE OR DRIVEWAY, A 2' SHY DISTANCE SHALL BE MA3NTAINED BETWEEN THE WALL FACE AND EDGE OF RDAD SURFACE 1'--0" MIN LEVEL GROUND 0 PROPERTY EINE � ROAD SURFACE �2 DIAMETER OF LARGEST ROCU IN BOTTOM COURSE OR 12", WHICHEVER IS GREATER EQI EQ I THIS DISTANCE SHALL NOT BE LESS THAN THE HEIGHT OF THE ROCKERY AND NOT LESS THAN 10 FT FROM EDGE OF ROAD WHEN SIDEWALKS ARE NOT PRESENT. ----,UNDISTURBED NATIVE SOIL OR COMPACTED CRUSHED ROCK, AS REQUIRED ROCKERIES SHALL NOT BE CONSTRUCTED IN CITY R.O.W. OR OVER PUBLIC EASEMENTS GENERAL NOTES: 1. SPECIAL INSPECTOR SHALL VERIFY ROCKERY HEIGHT, FOUNDATION MATERIAL, AND ROCK SIZE. 2. QUARRY SPALLS AND CRUSHED ROCK SHALL BE PLACED DIRECTLY FROM TRUCK OR OTHER SUITABLE CONTAINER IN ORDER TO MAINYTAIN CLEAN BACKFILL, 3. OPENINGS SHALL BE 'CHINKED' WITH QUARRY SPALLS. 9: ROCKERIES SHALL BE DESIGNED AND STAMPED BY A LICENSED PROFESSI❑NAL ENGINEER IF GREATER THAN s FEET IN HEIGHT OR IF VARYING FROM THESE STANDARDS, OR IF THE CITY DETERMINES THAT SPECIAL CONDITIONS (SUCH AS CRITICAL AREA OR MEADOWDALE EARTH SUBSIDENCE LANDSLIDE HAZARD AREA) EXIST. `a30 -199V ROCK SCHEDULE WALL HEIGHT MINIMUM ROCK S]ZE BASE TOP 2 FEET 2 -MAN 2 -MAN 4 FEET 3 -MAN 2 -MAIC[ 6 FEET p U 2 -MAN 8 FEET I 5 -MAN 2 -MAN Lu 6 z _ f rt x� f w 3r• ` O �Ib � % SL E 0 IF RQCKERY ABUTS A PRIVATE DRIVE OR DRIVEWAY, A 2' SHY DISTANCE SHALL BE MA3NTAINED BETWEEN THE WALL FACE AND EDGE OF RDAD SURFACE 1'--0" MIN LEVEL GROUND 0 PROPERTY EINE � ROAD SURFACE �2 DIAMETER OF LARGEST ROCU IN BOTTOM COURSE OR 12", WHICHEVER IS GREATER EQI EQ I THIS DISTANCE SHALL NOT BE LESS THAN THE HEIGHT OF THE ROCKERY AND NOT LESS THAN 10 FT FROM EDGE OF ROAD WHEN SIDEWALKS ARE NOT PRESENT. ----,UNDISTURBED NATIVE SOIL OR COMPACTED CRUSHED ROCK, AS REQUIRED ROCKERIES SHALL NOT BE CONSTRUCTED IN CITY R.O.W. OR OVER PUBLIC EASEMENTS GENERAL NOTES: 1. SPECIAL INSPECTOR SHALL VERIFY ROCKERY HEIGHT, FOUNDATION MATERIAL, AND ROCK SIZE. 2. QUARRY SPALLS AND CRUSHED ROCK SHALL BE PLACED DIRECTLY FROM TRUCK OR OTHER SUITABLE CONTAINER IN ORDER TO MAINYTAIN CLEAN BACKFILL, 3. OPENINGS SHALL BE 'CHINKED' WITH QUARRY SPALLS. 9: ROCKERIES SHALL BE DESIGNED AND STAMPED BY A LICENSED PROFESSI❑NAL ENGINEER IF GREATER THAN s FEET IN HEIGHT OR IF VARYING FROM THESE STANDARDS, OR IF THE CITY DETERMINES THAT SPECIAL CONDITIONS (SUCH AS CRITICAL AREA OR MEADOWDALE EARTH SUBSIDENCE LANDSLIDE HAZARD AREA) EXIST. `a30 -199V ROCK SCHEDULE WALL HEIGHT MINIMUM ROCK S]ZE BASE TOP 2 FEET 2 -MAN 2 -MAN 4 FEET 3 -MAN 2 -MAIC[ 6 FEET 4 -MAN 2 -MAN 8 FEET I 5 -MAN 2 -MAN -0--N-ff -,-S.''': CITY'-, 'OF -l-, L -M APPROVED BY REVISIONS DA ISIONSDATE STANDARD D ETA I L D. GEBERT 09/09/2005 ROCKERY DETAIL DATE 41/03 SCALE NTS DWG NO, E 8.9