Building Codes and Standards 5 Flashcards
6 cards from real MHIC practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 Building Codes and Standards 5 flashcards as text
Under the International Residential Code (IRC), what is the minimum required width for a main hallway in a new residential construction?
Answer: 36 inches
The IRC requires a minimum hallway width of 36 inches for main corridors in residential construction. This ensures adequate passage space for occupants and emergency egress.
A homeowner wants to add a bedroom in the basement. According to IRC egress requirements, what is the minimum net clear opening area required for an egress window in that bedroom?
Answer: 5.7 square feet
The IRC requires egress windows to have a minimum net clear opening of 5.7 square feet (with an exception of 5.0 sq ft at grade floor). This ensures occupants can escape or be rescued in an emergency.
When installing a deck attached to a house in Maryland, which document typically governs the ledger board connection requirements?
Answer: IRC Section R507 and local amendments
Attached deck construction, including ledger board connections, is governed by IRC Section R507 (Decks) along with any local Maryland amendments. The ledger connection is critical to prevent deck collapse and must meet specific fastener, flashing, and spacing requirements.
A contractor is framing a load-bearing wall and needs to install a header over a 6-foot door opening. Under the IRC, what is the primary factor in determining the minimum required header size?
Answer: The load the header must carry based on span and tributary area
Header sizing is determined by the structural load the header must support, which depends on the span of the opening and the tributary area of roof, floor, or wall loads above. The IRC provides span tables that account for these loads to ensure structural adequacy.
In Maryland, which agency is primarily responsible for adopting and enforcing the statewide building code for residential construction?
Answer: Maryland Department of Labor (through the Division of Labor and Industry)
The Maryland Department of Labor, through its Division of Labor and Industry, administers the Maryland Building Performance Standards and adopts the state building code, which is based on the IRC with Maryland-specific amendments.
According to IRC smoke alarm requirements, where must a smoke alarm be installed in a home with a finished basement being converted to living space?
Answer: On each level of the dwelling, including the basement, and inside each sleeping room
The IRC requires smoke alarms to be installed on each level of the dwelling unit (including basements), inside each sleeping room, and outside each separate sleeping area. When a basement is converted to living space, smoke alarms must be placed in all these required locations.