Floor Plan Development Flashcards
7 cards from real CEM practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Floor Plan Development flashcards as text
When performing a lighting energy analysis from floor plans, what is the standard unit used to express lighting power density (LPD)?
Answer: Watts per square foot (W/ft²)
Lighting Power Density (LPD) is expressed in watts per square foot (W/ft²) and is used to compare installed lighting against code maximums.
A floor plan indicates open-plan office spaces adjacent to private perimeter offices. What daylighting strategy best leverages both space types?
Answer: Lowering partition heights to allow daylight to penetrate from perimeter into the open-plan interior
Lower partitions allow daylight from perimeter windows to reach deeper into open-plan areas, reducing artificial lighting energy use.
What floor plan characteristic most directly determines the 'window-to-wall ratio' (WWR) used in energy calculations?
Answer: Total glazed area divided by total gross wall area on each facade
WWR is the ratio of total glazed area to total gross wall area on a given facade, directly affecting solar heat gain and infiltration calculations.
On a floor plan, a building has 'internal load-dominated' spaces like data centers adjacent to 'skin load-dominated' perimeter offices. What is the key HVAC zoning implication?
Answer: They must be on separate HVAC zones because their conditioning needs conflict throughout the year
Internal load-dominated spaces need year-round cooling while skin-dominated spaces need heating in winter, requiring separate zone control to avoid energy waste.
An energy audit floor plan shows that a manufacturing facility has no vestibules at its main entry doors. What energy problem does this indicate?
Answer: Excessive air infiltration and pressurization losses every time doors open
Without vestibules, each door opening creates a direct air exchange between conditioned interior and outdoor conditions, increasing infiltration losses.
When scaling a floor plan for energy analysis, an energy manager finds that 1 inch on the drawing equals 8 feet in reality. A room measures 3.5 inches × 2.25 inches on paper. What is its actual area?
Answer: 504 square feet
Actual dimensions are 28 ft × 18 ft = 504 sq ft (3.5 × 8 = 28; 2.25 × 8 = 18; 28 × 18 = 504).
A floor plan audit reveals that a hospital has many small, isolated single-occupancy rooms versus open bays. What is the primary HVAC energy implication of this layout?
Answer: More individual zone controls and reheat are needed, increasing system complexity and energy use
Many individual rooms each require separate pressure and temperature control, leading to more reheat, more controls, and higher overall HVAC energy consumption.