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AOstructures Inc.
<br />PO Box 413
<br />Carnelian Bay, CA 96140
<br />916.541.8586
<br />www.AOstructures.com
<br />Appendix B: General Notes
<br />GENERAL
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<br />USER RELIANCE
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<br />ROOF MOUNTED ARRAY'S
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<br />●Provide staggered rails/struts/beams every 100'-0", min. or per manufacturer spec's, whichever is smaller to allow for thermal expansion of the array elements.
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<br />●A gravity check is strictly limited to a 5% analysis as allowed per the 5% exemption of the Existing Building Code. This gravity check does not certify that the
<br />existing gravity system is adequately designed for the specific loads from the proposed solar system. In many cases, structures may have insufficient gravity
<br />capacity prior to the addition of the proposed solar array. Further engineering of the actual capacity of the structure can be provided per client/owner request.
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<br />Care should be taken during installation to ensure that PV arrays and/or miscellaneous equipment does not preclude drainage of water.
<br />Unless otherwise noted, construction material shall be evenly distributed if placed on framed floors or roofs. Loads shall not exceed the allowable loading for the
<br />supporting members and their connections. A certfication of the underlying building does not acoount for construction loads or construction staging unless
<br />specifically stated otherwise.
<br />All fasteners at the roof shall be stainless steel or otherwise be protected by a waterproofing membrane and installed withing the middle 1/3 of the dimensional width
<br />of the framing members.
<br />Unless otherwise noted, all lags installed in underlying roof framing members shall be embedded (threaded embed) a minimum of 2.5'' into the underlying framing.
<br />A lateral check is strictly limited to a 10% analysis as allowed per the 10% exemption of the Existing Building Code. This lateral check does not certify that the
<br />existing lateral system is adequately designed for the specific loads from the proposed solar system. In many cases, structures may have insufficient lateral capacity
<br />prior to the addition of the proposed solar array. Further engineering of the actual capacity of the structure can be provided per client/owner request.
<br />All fasteners shall be a minimum of 6" away from any truss panel or hinge joints, truss plates and/or member ends. Field verify location of fasteners prior to starting
<br />construction. All fasteners shall be pre-drilled to avoid splitting existing lumber.
<br />It is assumed that there have been no additional loads (HVAC or MEP equipment, additional layers of roofing, etc) added to the building over the course of the
<br />structures history. The contractor and/or client shall verify this with the property owner and notify AOstructures, Inc. if additional load has been added to the structure
<br />already.
<br />Flexible utility connections must be used at any building seismic joint.
<br />It is assumed that a standard quality of construction care was used to construct the original building and any subsequent retrofits, additions, remodels or tennant
<br />improvements. Roof's are assumed to be installed per manufacturer specifications and in good condition. It is the contractors responsibility to field inspect any and
<br />all decking or framing members supporting the proposed PV array for sub-standard construction means, signs of dryrot or water damage, corosion mold, fire
<br />damage, etc. and notify AOstructures in writing if any compromised material is found on site prior to starting construction.
<br />The contractor shall verify all dimensions, property setbacks, AHJ/HOA CC&R's, elevations and site conditions before starting work and shall notify AOstructure, Inc,
<br />(AOstructures) of any discrepancies.
<br />All report conclusions represent AOstructures, Inc.'s best professional judgment based upon industry standards.
<br />Resolve any conflicts on the drawings with AOstructures, Inc before proceeding with construction.
<br />The design criteria used for this project & listed on the first page of the report is based on the engineers best judgement and/or provided by the ATC council. AHJ
<br />specific requests may differ. Please contact our team if the design criteria needs to be modified.
<br />A site visit was not physically conducted by AOstructures. The accompanying calculations and certification are provided with the understanding that the building is in
<br />a good state of repair and was constructed to standard construction practice. It shall be the contractors responsibility to identify any framing irregularities including
<br />but not limited to inconsistent framing conditions, water, fire, pest or mold damage, cracked, split, deflecting, removed or otherwise compromised framing members
<br />and notify the EOR of any such findings prior to starting construction.
<br />AOstructures is not responsible for enforcing safety measures or regulations. The contractor shall design, construct, and maintain all safety devices including
<br />shoring and bracing, and shall be solely responsible for conforming to all local, state and federal safety and health standards, laws and regulations. The contractor
<br />shall take necessary precautions to maintain and insure the integrity of the structure during construction. If a lawsuit is filed by one of the contractor's or
<br />subcontractor's employees, or any one else, the contractor will indemnify, defend and hold the owner and AOstructures harmless of any and all such claims.
<br />Any and all waterproofing shall be provided by the contractor. AOstructures is not responsible for waterproofing.
<br />All hardware shall be installed per manufacturer specifications and within specified design limitations. AOstructures, Inc. assumes no responsibility for incorrectly
<br />installed hardware or hardware installed outside of the manfacturer specifications.
<br />AOstructures was engaged by Xero Solar (Client) to perform this assessment. This report and the information therein, are for the exclusive use of the Client. This
<br />report has no other purpose and shall not be relied upon, or used, by any other person or entity without the written consent of AOstructures. Third parties that obtain
<br />this report, or the information within shall have no rights of recourse or recovery against AOstructures, it’s officers or employees.
<br />If an analysis of a supporting stucture is included in our scope of work, the structural assessment only applies to the section of the roof that is directly supporting the
<br />proposed solar PV system. No existing solar system or other building components are certified by this report unless specifically mentioned as otherwise.
<br />No structural members can be cut for conduit, etc., unless specifically shown. Obtain prior written approval for installation of any additional conduit, etc. It is the
<br />contractors responsibility to field verify the location of any and all embedded or hidden rebar, mechanical, electrical or plumbing components prior to starting
<br />construction.
<br />The anchorage design of miscellaneous equipment (including but not limited to conduit, inverters, batteries, transformers, etc.) is not included in the scope of this
<br />review. If required or requested, additional services can be provided from our team to include such elements.
<br />1671 - Westridge Labs, Santa Ana, CA.xlsx 12
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