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Home My WebLink AboutFile Documents.210 W Main St.0056.2019 (76).ARBKEngineering 2_0056.2019.ARBK_210 W Main St Page: [3] 210 W Main-C300 Author: pjm File Name: CIVIL_210 W Main_Plans_20190702.pdf In Appendix F, include the design procedure calculations outlined in the URMP section 8.5.1.5 for green roof capacity. CIVIL_210 W Main_Plans_20190702.pdf (4) Page: [3] 210 W Main-C300 Author: pjm File Name: CIVIL_210 W Main_Plans_20190702.pdf It appears shoring plans were not provided with the resubmittal that addressed previous comments: 1. Where micorpiles are not used, what technique will be used? 2. How will utilities be accomodated through the micropile walls? 3. Show the surcharge restriction areas on the plans. Page: [4] 210 W Main ESC DETAILS-C504 DETAILS 4 Author: pjm File Name: CIVIL_210 W Main_Plans_20190702.pdf Verify that the Hydrotech's media contains a minimum of 10% organic material. Call out percent of sand used in this growing media. Page: [5] 210 W Main-C600 Author: pjm File Name: CIVIL_210 W Main_Plans_20190702.pdf If this transformer required an upgrade, City standards require the upgrade to be located out of the ROW on the projects property. Is this transformer out of the ROW? Will there be room to upgrade if necessary? REPLACE CURB& GUTTER MAIN WATER M A I N EX W A T E R SE R V I C E ADJACE N T CURB C U T & SIDEWA L K T O REMAIN. PHONE & CABLE: PROVIDE NEW PEDESTALS ONSITE. ROOF GREEN R O O F CIR C U L A T I O N W A L K W A Y S AR E A : 4 2 0 S F PERVIOUS PATIO AREA=90 SFCIRCULATION PIPED INTOSUBSTRATE 420 SF / 90 SF=4.67:1 7894.93 7894.97 7895.09 7895.11 7895.18 7895.30 7895.30 7895.30 7895.30 7895.30 7895.30 7895.30 7895.30 7895.25 7895.20 7895.30 7895.28 7895.28 7895.30 7895.29 7895.307895.30 7895.307895.30 7895.307895.30 7895.30 7895.30 7895.307895.30 7895.30 7895.07 7895.10 7895.07 7895.09 7895.12 7895.30 7895.30 7895.30 7895.307895.24 7895.307895.30 7895.20 7895.20 7895.10 7895.16 CLEANOUT 1RIM:7895.30INV IN:7893.97 4" PVCINV OUT:7893.97 4" PVC CLEANOUT 2RIM:7895.28INV IN:7893.87 4" PVC INLET - 8RIM:7895.26N:7894.20 4" PVCT:7894.20 4" PVC NLET - 7M:7895.26.32 4" PVC INLET - 5RIM:7895.26INV OUT:7894.36 4" PVC PIPE A47.13' of 4" PVC @ 0.84% PIPE B28.24' of 4" PVC @ 1.00% PIPE C216.73' of 4" PVC @ 1.00% PIPE C14" PVC @ 1.00% DISCHARGE ROOF DRAIN TOGRADE DISCHARGE ROOF DRAIN TOGRADE PIPE B13.06' of 4" PVC @ 1.00% PIPE A310.56' of 4" PVC @ 1.00% INLET - 4RIM:7895.26INV IN:7894.03 4" PVCINV IN:7894.03 4" PVCINV OUT:7894.03 4" PVC DISCHARGE ROOFDRAIN TO PIPE C GRASS FLOWLINE HP: 7895.20 16.64 FT 18.81 FT 7895.19 NEW TR E E PERFORATED PIPE10.14' of 4" PVC @ 1.00% -0.2% -3. 5 % -2. 5 % -4. 1 % In Appendix F, include the design procedure calculations outlined in the URMP section 8.5.1.5 for green roof capacity. It appears shoring plans were not provided with the resubmittal that addressed previous comments: 1. Where micorpiles are not used, what technique will be used? 2. How will utilities be accomodated through the micropile walls? 3. Show the surcharge restriction areas on the plans. Verify that the Hydrotech's media contains a minimum of 10% organic material. Call out percent of sand used in this growing media. TRANS-FORMER If this transformer required an upgrade, City standards require the upgrade to be located out of the ROW on the projects property. Is this transformer out of the ROW? Will there be room to upgrade if necessary? RJ Engineering responses: 1. Temporary slopes 2. See Sheet Grade-2, Note 2 3. See Sheet Grade-2 The Hydrotech extensive media contains 3-8% organic material. The remaining gradation requirements are specified by Hydrotech (see attached spec sheet). Ron stated to team members that he has signed off on the permit. We have updated the Appendix using the URMP section identified. The Hydrotech spec sheet gives a soil gradation that is 90% sand and larger free draining material. 09/02/2019 6 Appendix F—Green Roof Information Green roof storage calculation: Volume per Hydrotech Gardendrain GR15 information sheet: 0.163 in / square foot Basin Green Roof Area (sf) Volume (cf) PR:2A 767.39 10.42 PR:2B 455.99 6.19 PR:3 1744.03 23.69 Green roof storage calculation per the URMP: Volume per URMP equation found on page 8-69, item number 2: Volume=Depth of Material * (%Sand) * 0.3 / 0.255 We believe there is an error in the equation. We believe the author’s intent was to calculate the void area of the extensive mix and solve for a unit volume and then apply the unit volume to the roof area. We solve the following equation: Volume (cf) =Depth of Material * (%Sand) *0.3 * Green Roof Area (sf) Therefore, the unit volume= 3” * 90%*0.3=0.810 in/square foot. The table below solves the available volume for each of the roofs. Basin Green Roof Area (sf) Volume (cf) PR:2A 767.39 51.80 PR:2B 455.99 30.78 PR:3 1744.03 117.72 09/02/2019 Reviewed by Engineering 09/13/2019 11:35:20 AM "It should be known that this review shall not relieve the applicant of their responsibility to comply with the requirements of the City of Aspen. The review and approval by the City is offered only to assist the applicant's understanding of the applicable Engineering requirements." The issuance of a permit based on construction documents and other data shall not prevent the City of Aspen from requiring the correction of errors in the construction documents and other data. AMERICAN HYDROTECH, INC., 303 E. OHIO ST., CHICAGO, ILLINOIS 60611-3387 TELEPHONE 312/337-4998 ● FAX 312/661-0731 ● www.hydrotechusa.com CANADA ● FAR EAST ● MIDDLE EAST ● UNITED KINGDOM ● UNITED STATES AMERICAN HYDROTECH LiteTop® EXTENSIVE GROWING MEDIA SPECIFICATIONS X. Growing Media 1. Provide a custom growing media mix that will support vigorous growth of the specified planting materials, complying with the following performance specifications that meet or exceed the German FLL Standards: Research Association for Landscape Development and Construction; Guidelines for Planning, Performance, and Maintenance of Vegetated Rooftops.  American Hydrotech Inc., LiteTop® Extensive Blend Property Extensive LiteTop Growing Media* Grain Size Distribution (ASTM F1632 Method B) clay fraction (<0.002mm) < 2 % silt fraction (0.075-0.002mm) < 8% passing #200 sieve (0.075mm) < 10% passing #60 sieve (0.25mm) 5 – 25 % passing #18 sieve (1.0mm) 15 – 45 % passing #10 sieve (2.0mm) 25 – 60% passing 1/8-inch sieve 30 – 75 % passing 1/4-inch sieve 45 – 95% passing 3/8-inch sieve 95 – 100 % Density (ASTM E2399) Initial Media Density 55 lbs – 80 lbs/cf Maximum Media Density 70 lbs – 90 lbs/cf (Lighter blends may be available) Water/Air Management (ASTM E2399) saturated water capacity > 30% air filled space (porosity) > 10% total pore space > 40% Water Permeability Hydraulic Conductivity >12 in/hr pH, Lime, and Salt Content pH (saturated paste) 6.0 – 8.0 salts content (water extract) <2.5 mmhos/cm Organics (LOI 550°C) (ASTM F1647) Organic Matter content 3 – 8 % by volume Compost Fraction: 1) Meet or exceed USEPA Class A standard, 40 CFR 503.13, Tables 1 & 3 (chemical contaminants) and 40 CFR 503.32(a) (pathogens) and/or be permitted in the state of origin to produce Class A material. 2) Meet or exceed US Compost Council STA/TMECC criteria or equal for Class I or II stable, mature product. * Values shall be adjusted due to availability of local materials or special project conditions related to plant selection and/or environmental conditions. Revised: July 15, 2013 09/02/2019 American Hydrotech, Inc. 303 East Ohio Street, Chicago, IL 60611 • (312)337-4998 • (312)661-0731 fax • 10/18 www.hydrotechusa.com LiteTop® Growing Media PRODUCT DATA SHEET GENERAL DESCRIPTION Hydrotech’s LiteTop engineered growing media is a specially blended lightweight growing medium composed of organic and mineral materials. The type of vegetation and the desired assembly determines the percentage of the components of lightweight aggregates, sands and composts. Multiple blends are available, contact Hydrotech for specifics. BASIC USE Hydrotech’s LiteTop growing media is specifically designed to be used on Hydrotech’s Garden Roof® extensive, lawn, intensive and sloped and urban agriculture assemblies. INSTALLATION • LiteTop growing media shall be installed as indicated in Hydrotech’s Garden Roof Installation Guidelines. LEED® INFORMATION Credit 4 Credit 5 Recycled Content (% by weight) Varies regionally, contact Hydrotech Manufacture Location 40+ locations, contact Hydrotech for more information Extraction/Harvesting Location 40+ locations, contact Hydrotech for more information VOC Content (g/L) 0 This information is intended only for general conceptual purposes. It is based on data and knowledge considered to be true and correct. It is offered for the user’s consideration, investigation and verification and is not intended to substitute for the advice provided by appropriate professionals. Hydrotech assumes no liability for the use of this information. The determination of the suitability and applicability of this information is the sole responsibility of the user. 09/02/2019