12 All stairs must have a riser heights that are equal to tr

12. All stairs must have: a. riser heights that are equal to tread width. b. riser heights and tread widths that combined are no greater than the stairway width. c. riser heights that are dependent on the mobility of the occupants d. riser heights that are lower for children. e. None of the above 13. Exit enclosures: a. protect exiting occupants by providing fire- resistant separation from other building spaces. b. provide fire protection for building shafts such as elevator c. provide an area of refuge where occupants can wait for rescue in an emergency d. are limited in their length of vertical travel e. None of the above 14. Exit passageways extend from the a. exit access to the exit. b. exit to the exit discharge c. exit discharge to the public way d. horizontal exit to the vertical exit. e. None of the above 15. The exit discharge extends from the a. any exit to the public way b. exit access to the public way c. emergency escape openings to the public way. d. from the building service entrance to the public way. e. None of the above 16. Emergency escape and rescue openings must be a. covered with security grilles. b. fire-rated assemblies. c. automatic opening d. large enough to allow occupants to get out of the building e. None of the above 17. In terms of the building code, accessibility: a. means that the building meets the ADA requirements. b. refers to the facilities that are accessible to persons with physical disabilities. c. means that all buildings have the required number of Type B dwelling units. d. refers to the number of handicap parking spaces provided e. All of the above.

Solution

according to chegg term and conditions, i will answer \"first four\" quastions.

12 - C according to the international , maximum riser hight is 7 3/4 inch and minimum is 4 inches so any riser hight can be adopted in between the limit.

13- A according to new york building code - Exit enclosures shall have a fire-resistance rating of not less than 2 hours conforming to the Section 1022 of international buiding code, standard definition of EXIT ENCLOSURE is - An exit component that is separated from other interior spaces of a building or structure by fire-resistance-rated construction and opening protectives, and provides for a protected path of egress travel in a VERTICAL OR HORIZONTAL DIRECTION to the exit discharge or the public way.

14 - A Section 1023 of international building code

15 - A

16- both A and D are correct. according to Section R310
Emergency Escape and Rescue Openings. security grills can be installed at the opening but they should be removable \"without the use of keys\"

17 - B