Minimum Window Height Above Floor In Massachusetts 2018

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.

Minimum window height above floor in massachusetts 2018.

The code regulates this minimum sill height only. Minimum window sill heights. 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.

R310 1 3 minimum opening width. The bottom edge of the glazing is less than 18 inches 457 mm above the floor. R310 1 2 minimum opening height. The minimum egress window opening height is 24 high.

Ground floor windows and 5 7 ft for upper levels. The egress window must have a glass area of not less than 8 of the total floor area of room s for which it is servicing to allow the minimum amount of sufficient natural light. The minimum egress window opening is 20 wide. Minimum 20 inches of net clear width opening.

Grade floor openings shall have a minimum net clear opening of 5 square feet 0 465 m2. Maximum 44 inches to window sill measured from finished floor. Fixed or operable windows must include safety glass if they measure larger than 9 feet square the bottom edge is less than 18 inches above the floor the top edge is more than 36 inches above the. The minimum opening area of the egress window is 5 7 square feet.

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. 2018 international building code 2406 4 3 specifies that tempered safety glass is needed if all these conditions exist. The interior seat sill is only 15 inches from the floor. The minimum net clear opening width shall be 20 inches 508 mm.

In cases where the sill height is less than 24 the window shall not have an opening greater. The minimum window sill height requirements are intended to reduce the number of injuries from falls by children through open windows. 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. 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.

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. 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.