DOORS AND WINDOWS

This chapter describes the installation of doors, windows and crawl space access for structures built with the SmartBlock insulating forms.

5.1 Frames

Doors and windows should be cut into the foam during installation of the SmartBlock insulating forms. Rough opening sizes must consider additional allowances for the frame described below.

Door and window frames should be of 2" x PDTF, foundation grade redwood or other approved treated lumber. It is recommended that oversized frame material be used and "ripped-down" to desired size to eliminate any dead space between frame and finish material.

One recommended frame attachment procedure is to use 3/8" diameter x 6" machine bolts in a staggered configuration leaving the nuts and washers on to resist pull-out of the bolts. The bolt heads shall be countersunk into the frame with a minimum amount of frame removed for a flush fit after washer and head are inlaid. An alternate method is to use 1/2" diameter x 8" anchor bolts set so the nut and washer will inlay flush at the frame with care taken so as not to allow the end of the bolt to extend beyond the face of the frame. See Chapter 9 for Detail 18.0.

5.2 Reinforcing Steel

Reinforcing steel is required to surround all openings in the following manner: 2-#5 reinforcing steel bars are required both horizontally and vertically around all openings, and must extend a minimum of 24" beyond the corner of that opening. In the case of the restricted area past the corner of an opening, the bar may be bent to tie to the nearest horizontal or vertical reinforcing bar.

 

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