Minimum Window Height Above Floor In Massachusetts 2018

R310 1 2 minimum opening height.

Minimum window height above floor in massachusetts 2018. Minimum 20 inches of net clear width opening. The minimum egress window opening is 20 wide. The bottom edge of the glazing is less than 18 inches 457 mm above the floor. The minimum net clear opening height shall be 24 inches 610 mm.

The 2018 irc continues to require the bottom of openings created by operable windows to be a minimum height of 24 inches above the adjacent interior floor when they are more than 6 feet above the grade outside the window. Any windows in a door must have tempered glass no matter the height unless it is too small for a 3 inch ball to pass through the window. Minimum 24 inches of net clear height opening. Minimum window sill heights.

Exceptions can be made for windows that do not open more than 4 inches or that have window guards or opening control devices in compliance with astm f2090 17. 2018 international building code 2406 4 3 specifies that tempered safety glass is needed if all these conditions exist. The minimum opening area of the egress window is 5 7 square feet. In cases where the sill height is less than 24 the window shall not have an opening greater.

Window wells serving an egress window shall not be less than 9 square feet in area with a horizontal length width of no less than 36 inches. The minimum egress window opening height is 24 high. Grade floor openings shall have a minimum net clear opening of 5 square feet 0 465 m2. The code regulates this minimum sill height only.

The exposed area of an individual pane is greater than 9 square feet 0 84 m2. The 24 inch sill height is typically above a small child s center of gravity reducing the likelihood of the child s toppling over the sill. The minimum net clear opening width shall be 20 inches 508 mm. The interior seat sill is only 15 inches from the floor.

According to the 2018 irc all windows that are more than 6 feet above the grade outside the window must have a bottom opening a minimum of 24 inches above the room s interior floor. Fall protection requirements state that windows with openings more than 72 above the finished grade or surface below are to have a minimum sill height of 24 above the interior finished floor. The minimum window sill height requirements are intended to reduce the number of injuries from falls by children through open windows. Ground floor windows and 5 7 ft for upper levels.

Maximum 44 inches to window sill measured from finished floor. If you are installing windows within 2 feet of a door and lower than 5 feet from the ground you need tempered glass in the windows even though these might be higher than 18 inches from the ground.