CONSTRUCTI B01 Exam 6 & 7 Questions and Answers (2022/2023) (Verified Answers)

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CONSTRUCTI B01 Exam 6 & 7 Building codes often require a minimum IIC of for a floor-ceiling assembly between two separate apartment units. What noise-reducing wall assembly uses a steel clip... , hat channel, and rubber pad to reduce airborne sound transmission through walls? The pitch of a sound is related to What term is used for a method of wall construction that is one of the most effective methods of increasing the STC of lightweight walls? A decibel level of 60 is equivalent to the sound of What frequency range is used to determine the NRC of a sound-absorbing material? Sound speed in air is approximately Which of the following statements about sound-transmission class (STC) is true? The sound created by human speech is Sound that is audible to human beings has a frequency lying between Most of the noise produced in a busy restaurant or dining hall is A sound-absorption coefficient greater than is required for a material to be considered sound- absorbing. At which one of the following STC values can spoken sentences be clearly understood through a wall? What sound-absorbing material configuration is often used to construct low-height partitions in open office layouts? Two contractors are reviewing the concept of frequency. Contractor A says that sound frequency is measured in the units called dB. Contractor B says that frequency is the number of sound wave cycles per second. Which one of the following statements is correct? Only Contractor B is correct. Sound transmission class (STC) is a measure of the Which of the following wall assemblies would have the highest STC value? Which one of the following is the wavelength of sound at 150 Hz? 7.53 ft For a party wall between two dwelling units, such as two apartments, the building codes require its minimum STC value to be Which of the following types of sound would be considered a structure-borne sound? Door Slamming The unit of measure for the coefficient of thermal expansion (a) is Which of the following would not be considered a component joint? Which of the following building materials would not be subject to creep movement? The sealant in a joint works best when it is subjected to Creep deformation occurs in The width of a building separation joint is generally A building separation joint in a multistory building generally A non-load-bearing wall that runs under a spandrel beam should be adequately separated from the beam to allow the beam to move freely in the What is the largest type of movement for most building components? In determining the total width of a movement joint between building components, we account for the dimensional and construction tolerances. Poor or inadequate quality control on a construction site Two contractors are discussing the joining of building materials. Contractor A says that static joints are mainly used to connect materials that are different in composition. Contractor B says that window glass and a window frame are normally held with a static joint. Which one of the following statements is correct? Only Contractor A is correct. Both Contractor A and Contractor B are correct. Neither Contractor A nor Contractor B is correct. Which one of the following statements about building joints is not correct? Which one of the following statements about thermal movement is correct? Two contractors are comparing joint sealants. Contractor A says that the life expectancy of most high- grade sealants is no more than ten years. Contractor B says that silicone joint sealant has better durability than polyurethane sealant. Which one of the following statements is correct? Only Contractor A is correct. Only Contractor B is correct. Neither Contractor A nor Contractor B is correct. The component of a sealed joint that is used to improve the adhesion of the sealant to the substrate. Which of the following materials is subjected to moisture movement? How does the joint width of an expansion joint change over time? Which of the following joint sealants has the highest movement ability? The equation used for determining the thermal movement, t, of a member is Creep deformation is caused by Which of the following dB readings would be considered a substantial change in sound level? Which of the following building components is considered one of the most common porous absorbers? The measure that is used for structure-borne sound insulation is Which one of the following statements about noise-reduction coefficients is correct? A joint between two walls has been determined to be 0.5 in. if the joint is not to be filled with a sealant. If the same joint is to be filled with a class 50 sealant, its width should be Which of the following materials has irreversible moisture expansion during service, that is, after construction? Which of the following joint sealants has the highest abrasion resistance? Building separation joints in a long rectilinear building are generally located at every Which of the following materials does not represent a joint sealant? A spandrel beam in a building is a beam that The NRC of a material lies between A) 1 and 100. B) 0 and 10. C) 1 and 10. D) None of these. What unit of measure is commonly used to indicate audible sound levels? Which of the following statements about sound is false? The wavelength of sound at a frequency of 1,000 Hz is approximately The noise-reduction coefficient (NRC) of a material is evaluated between the frequency range of 250 Hz and 2 kHz because What type of joint is typically required in a concrete masonry wall? A plain concrete slab-on-grade has expansion joints located at 6-foot intervals. What would be the minimum required width of each expansion joint? [Show More]

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