Portal Framing Garage Door

The apa the engineered wood association has developed a good method to utilize wood structural panels osb or plywood to minimize the framing needed at each side of a garage door without special connectors hold downs to the foundation.

Portal framing garage door. Portal frames are one of the bracing techniques specified utilizing the garage door header as a component. That s why apa developed a code recognized wall bracing method called the portal frame which is commonly used to frame garage doors but which you can also use as bracing at other door or window openings. Pull a measurement from the floor of your space to the ceiling next to the door opening. This lumber will be used to attach your garage door track and a portion of your assembly.

The portal frame header should be sized for gravity loads but also must meet the minimum size of 3 x 11 1 4 required per the irc portal frame details. Cut two 2 x 6 pieces of lumber and attach to the face of the wall running from the edge of your garage door jambs to the ceiling of your garage. The strong wall wood shearwall garage portal system provides higher shear capacity with reduced concrete anchorage requirements. Garage door portal framing garage doors are tough.

Portal walls may be used in single or double portal applications and shall be installed with a minimum 3 single or multiple ply header depending upon loading and span requirements. 1 inch 25 4 mm 1 foot 304 8 mm. Simpson strong tie offers a steel strong wall shearwall option for garage portal systems that combines simplified installation with superior performance. For the portal frame to resist these loads perpendicular to the wall provisions included in table 1 and figures 1 3 have been developed.

In a portal frame the header extends past the opening and is tied to its wall with overlapping plywood or osb to stiffen the joint. Higher capacity with reduced concrete anchorage requirements see alternate garage front options for other options same anchor bolt template. Garage doors for example collect a large area of wind pressure and impose large loads on the adjacent wall framing. The opening size is also limited to a maximum of 18 feet.

Figure r602 10 6 3 method pfg portal frame at garage door openings in seismic design categories a b and c. The irc details related to the header are often misunderstood and misapplied leading to an installation with unintended structural consequences.