Consulting-Specifying Engineer - June 2008 - (Page 26)

the exhaust method, and the pressurization method. Systems using the exhaust method are designed to the provisions of NFPA Standard 92B, “Smoke Management Systems in Malls, Atria and Large Spaces.” Use of performance-based codes allows the designer to submit an alternate approach for consideration. The Fire Protection Report typically is submitted with the architectural permit application and is reviewed and approved by the Building Plans Examination staff, usually licensed fire protection engineers for major projects. The Fire Protection Report also must be reviewed and approved by the Clark County Fire Dept., which is responsible for acceptance of the fire detection and alarm systems, emergency notification system, fire sprinkler system, any alternative automatic fire extinguishing system, standpipe system, and elevator emergency response system. Tenant improvements may be reviewed by an architectural plans examiner. An approved Fire Protection Report establishes the design philosophy for the building smoke control system. A major project may resubmit the report for review several times prior to approval. The most important document in the Fire Protection Report for the personnel installing the smoke control system in the field is the smoke control matrix, Billion dollar babies Mega-resorts under construction along the Las Vegas Strip include: $ CityCenter ($9.2 billion), $ Echelon Place ($5 billion) $ Cosmopolitan ($4 billion) $ Fontainebleau ($3 billion) $ Encore ($2 billion) which usually is provided as an appendix. This matrix typically lists the initiating devices for smoke control in a column at the left side of the document and shows the functional response of the smoke control system in a row at the top. If the Fire Protection Report notes that a Clark County resources online To assist fire protection engineers, Clark County has published the “Fire Protection Report Building Design Guide,” which provides information on how to address the smoke control system in the Fire Protection Report. The guide is available on the Clark County Web site at www.accessclarkcounty.com. After selecting Development Services from the A-D menu on the left side, click on Building Services, click on Plans Examination under Services, click on Building Permit Guides under Services, and then click on Fire Protection Report Design. Also online are: • A list of qualified smoke control testing agencies. Navigate to the Department of Development Services, click on Building Services, click on Engineering under Services, click on Approved Listings under Services, and then click on Quality Assurance Agencies, Smoke Control and/or Test and Balance. • A checklist that describes what information needs to be on smoke control diagrams. It is Attachment A to Technical Guideline TG-60 (Smoke Control). TG-60 can be found by navigating to the Department of Development Services. Then, click on Building Services, click on Engineering under Services, click on Technical Guidelines under General Info, and finally, click on TG-6-2006/IBC. • A checklist describing the information required in the final test report. The checklist for final reports is Attachment B to TG-60. smoke control system is required, then the reviewer notes this requirement on the permit and a special inspection agreement for smoke control is issued with the permit. The owner must then hire a qualified inspection/ testing agency to witness the proper operation of the system. Once a mechanical permit is issued for a building, the Building Division staff places a hold on scheduling of rough mechanical inspections. The hold is placed for review and approval of smoke control diagrams. The diagrams combine design details of the smoke control system, which previously may have been scattered among the mechanical, fire alarm, architectural, and possibly electrical drawings. The hold on scheduling of rough mechanical inspections ensures that ductwork and dampers are not enclosed prior to inspection of this important smoke control equipment. Smoke control diagrams are submitted for review by Building Division engineers. The diagrams include: • Control wiring details • Plan views showing smoke and sprinkler zone boundaries • Riser diagrams showing duct and smoke control equipment in elevation views • Layout and location of major smoke control equipment • Detailed smoke control matrix Smoke control equipment (see Figure 1) typically included in the diagrams are: • Ducts • Fans • Dampers and doors • Area, heat or duct detectors • Sprinkler water-flow switches and other initiating devices. The detailed smoke control matrix expands on the conceptual matrix in the approved Fire Protection Report. It lists every initiating device in the system and the functional response of the smoke control equipment to that initiating device (dampers and doors open or close, fans start or stop, etc.). The mechanical designer usually generates smoke control diagrams. The smoke control diagrams are reviewed carefully, because they serve as the basis for drafting test scenarios and programming and accepting the smoke control system. Approval of the smoke 26 Consulting-Specifying Engineer • JUNE 2008 http://www.accessclarkcounty.com

Table of Contents Feed for the Digital Edition of Consulting-Specifying Engineer - June 2008

Consulting-Specifying Engineer - June 2008 Contents Viewpoint Letters News M/E Roundtable No Gambling Allowed on Smoke Control in Las Vegas Be Prepared: Hospital Protections for Catastrophic Events Ready for Retail Commissioning Documents: Necessary Evil Codes & Standards Codes & Standards Case Study Equipment Lifecycles New Products Advertiser Index Green Space

Consulting-Specifying Engineer - June 2008

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