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# Learning Exercise

 Material: Building Construction for Fire Protection Submitted by: James "JD" Brown on Jul 07, 2006 Date Last Modified: Jul 14, 2006 Title: Egress Design Lab Description: URL is a Word File giving a vocabulary and Report Assignment as shown here. Type of Task: Individual, Team Time Required 3 hours Topics: Egress evaluationReport writing Audience: College Lower Division Categories: Prerequisites Skills: Written reports,basic calculations, code understanding, Learning Objectives: Communicate the condition of a structureEvaluate capacity of a occupied building Text of Learning Exercise: LabEgress DesignDefine and give and explanation of the following terms (NFPA Handbook or NFPA 101) as they apply to egress design. Where units are applicable designate appropriate units:FlowSpeedBoundary LayerConvergence ClusterEffective WidthLow Hazard contentsHigh Hazard contentsExitExit AccessExit dischargeSmoke proof towerSmoke BarrierREPORTEvaluate and describe in detail the means of egress for an assigned building. Description of the structure should include occupancy classification, design (type of architecture and NFPA building classification), dimensions, condition, adjacent and included fire protection features, etc. Include a clear hand-drafted or CAD drawing the egress system. Using NFPA 101 or the International Building Code, Calculate the capacity of the major components of the means of egress. The write-up is due at the beginning of the next lab session. KEY LabEgress DesignDefine and give and explanation of the following terms as they apply to egress design. Where units are applicable designate appropriate units:Flow The movement of people past a point in the route of egress. Expressed in people-feet/minute Speed average velocity of persons in the means of egressBoundary Layer --a s pace kept between occupants of the means of egress and their surroundingsConvergence Cluster -- occurs in high rise and/or assembly occupancies when people congregate in an area where they feel they have refuge from a fire.Effective Width the total width minus boundary layers Low Hazard contents -- contents that are non combustible or have low combustibilityHigh Hazard contents - contents are likely to burn rapidly or explosively; therefoire rapid egress is essential. Note: this classification is different than the classification applied for sprinkler system design.Exit -- A portion of the means of egress separated from the surrounding building by construction or equipment to provide protection of the occupantsExit AccessÂ—the portion of the means of egress leading to the exitExit discharge -- that portion of the means of egress leading from the termination of the exit to the public way.Smoke proof tower -- provides the highest type of protection access is so that smoke and flames cannot spread readily even if the doors are left openSmoke Barrier --a continuous membrane (either horizontal or vertical) that is designed and constructed to prevent or restrict the movement of smoke REPORT
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