Best Practices for Project Management, Design, and Construction of ...

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upon the local geologic conditions and hazards being investigated, but at a minimum, will include drilling of subsurface borings. Section 1803A.3.1, Scope of Investigation, of the 2010 CBC requires one boring per 5,000 square-feet of building (plan area) and a minimum of two borings per building. Soil samples are collected from various soil layers encountered in the boring for laboratory testing to determine soil properties. Data and reports from previous geologic investigations at the site may be used to supplement site investigations of future projects so long as the data are located in close proximity, and are relevant to the project under construction. Unusual Projects Sites within Alquist-Priolo Earthquake Fault Zones (or local equivalents) should perform fault investigations well in advance of building design. CGS should have the opportunity to review fault trenches in the field. Sites within regulatory earthquake hazard zones (or local equivalents), in addition to standard subsurface borings, may also require supplemental data collected using methods such as down-hole logging and assessment of seismic wave velocity. Hazard Mitigation Once the site investigation is completed and all geologic hazards are indentified and characterized, as necessary and appropriate, the EOR and GOR will provide mitigation recommendations. Geologic hazard mitigation typically includes site ground improvement work such as removal of weak soils, engineering foundation recommendations, or a combination of both. Avoidance is the only acceptable mitigation for fault rupture hazard. Where active faults are known to cross a project site, a 50-foot minimum setback is required. Geologic Hazards Report After completion of site investigation activities and laboratory testing, the GOR and EOR will compile a report documenting all site investigation activities and the results of laboratory testing, a summary of all important findings, and appropriate recommendations. A complete report may include (but not be limited to) the following: • A summary of important findings • A site plan showing the location of site investigation activities with respect to the footprint of each building • Regional and site-specific geologic maps • Highest historical groundwater information • Cross sections • Ground motion analysis • Copies of all laboratory test results • Copies of all calculations (including all input parameters) • Mitigation recommendations Approval of Seismic and Geologic Hazard Reports Upon receipt of reports transmitted from OSHPD, CGS reviewers will assess the document(s) for completeness with respect to CGS Note 48. After reviewing the documents, CGS will submit a letter to OSHPD either noting the geologic and seismic hazards are adequately addressed or summarizing inadequacies and requesting additional information. When additional information is (OSHPD Best Practices) Page 8 DRAFT FINAL, Sept. 2011
equested, CGS will review the supplemental data and analysis and submit a letter to OSHPD stating whether all of the geologic and seismic hazards are adequately addressed. In some cases, site ground improvement mitigation methods will result in a conditional approval of the project. Full approval of the project is granted after the GOR and EOR complete the recommended ground improvement activities and provide a revised hazard report documenting the improved site conditions. For seismic upgrades or additions to existing structures OSHPD should be consulted to determine whether or not the project will be forwarded to CGS for review. Upgrades and additions forwarded to CGS for review will be subject to all of the requirements outlined in CGS Note 48. (OSHPD Best Practices) Page 9 DRAFT FINAL, Sept. 2011
Page 1 and 2: [On inside Title Page: Many of the
Page 3 and 4: • Part 1 of Title 24 is the Calif
Page 5 and 6: Rapid Review Unit The Rapid Review
Page 7: Section 2: Geologic Hazards Investi
Page 11 and 12: under OSHPD regulations. Please see
Page 13 and 14: Another approach to creating better
Page 15 and 16: create confusion. The discipline ha
Page 17 and 18: applicable phasing must be clearly
Page 19 and 20: addresses, and project Websites, ma
Page 21 and 22: • Plumbing fixture counts for pub
Page 23 and 24: (OSHPD Best Practices) Page 23 DRAF
Page 25 and 26: • Treatment of listed floor slab
Page 27 and 28: • References to the prescriptive
Page 29 and 30: Provisions of California Fire Code
Page 31 and 32: Existing Special Conditions The sam
Page 33 and 34: Enlarged Drawings Provide enlarged
Page 35 and 36: 3.6 Door Schedule Purpose The door
Page 37 and 38: Existing or Special Conditions Exis
Page 39 and 40: approved “shake table testing.”
Page 41 and 42: Drawing Content Equipment may inclu
Page 43 and 44: Drawing Content For details that pr
Page 45 and 46: Details that provide information on
Page 47 and 48: Early in the design process, it is
Page 49 and 50: • Identify any equipment that req
Page 51 and 52: • Identify any equipment that req
Page 53 and 54: Several drawings contain essential
Page 55 and 56: o o o o o o o o Floor Plan - Lighti
Page 57 and 58: Section 4: Inspector of Record Best
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• Approved program flexes; • Ra
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9. The IOR shall submit verified co
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• Log and record areas that by de
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• Inspections completed by the us
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Logging Inspection Requests 1. When
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Preconstruction Meetings A preconst
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• Explain code requirements for s
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Concluding Remarks An IOR needs to
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Although including the TIO Program
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Owner The Owner is responsible for
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Inspections The TIO Program should
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The construction of hospitals in Ca
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Instruction Bulletins (IBs), prepar
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Changes will undoubtedly be require
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Proper execution of these and the o
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contingencies, that concur with def
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and help in determining the cause o
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have discovered that bids only cove
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Best Practice 7: Determine whether
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OSHPD believes the key to receiving
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the design assistance from the manu
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Permit Phase Best Practice 15: Keep
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Comment and Process Review The deci
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See Section 4 of this volume for a
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• OSHPD shall schedule a final st
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CPC CPR DD Deferred Submittals DSE
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(OSHPD Best Practices) Page 111 DRA
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