NICET WBSL Level IV case studies
NICET WBSL Level IV · Put your knowledge to work in context.
NICET Water-Based Systems Layout is one of the Fire Protection/Building Systems Programs listed on nicet.org, alongside Fire Alarm Systems, Inspection and Testing of Fire Alarm Systems, Inspection and Testing of Water-Based Systems, Special Hazards Systems, and In-Building Public Safety Communications. Within that program, Level IV is the highest technician grade, aimed at experienced layout professionals who design water-based fire protection systems - sprinkler, standpipe, and related piping - and who direct or check the work of others. The NICET WBSL Level IV case studies are 5 cases and about 3,637 words.
1ESFR Warehouse: Supply-versus-Demand Comparison with a Marginal Water Supply
A 220,000 ft² single-story warehouse has a 40 ft flat ceiling and 25 ft of cartoned, unexpanded Group A plastic on double-row racks. The layout is a K=14.0 ESFR system, 12 design sprinklers at 35 psi.
727 words, about 4 min2Manual Wet Standpipe: Fire Department Connection Pressure and Hose Valve Protection
A 12-story office building is 150 ft from grade to the topmost 2½ in Class I hose valve. The standpipe is a manual wet system supplied from the city main; the fire department connection is at grade on the street.
648 words, about 3 min3Existing Fire Pump and a New Mezzanine Demand That Lands Off the Curve
A distribution center has an existing 1,000 gpm fire pump rated at 90 psi serving an ESFR system. The tested curve reads: churn 102 psi at 0 gpm, 90 psi at 1,000 gpm, and 58.5 psi at 1,500 gpm.
693 words, about 3 min4Seismic Restraint in SDC D: Sway Bracing, a Separation Joint, and a Masonry Wall
A four-story steel-framed office building is in Seismic Design Category D. The sprinkler system has a 2½ in Schedule 40 main running 180 ft east-west beneath bar joists, and a 4 in riser at the north end.
909 words, about 5 min5Dry-Pipe System: Compressor Capacity and Water Delivery Time
An unheated 90,000 ft² warehouse in a cold climate is protected by a dry-pipe system fed by a single 6 in dry valve at the riser. The layout has 4,200 ft of 4 in Schedule 40 main, 1,800 ft of 1¼ in Schedule 40 branch line, and 620 sprinklers.
660 words, about 3 min