What size should pergola rafters be?
4″ x 2″
Geoff, a builder friend, once said that for a smaller sized pergola, with 4″ x 2″ rafters, the pergola beam span should be no bigger than the width of a standard fence panel, or 6ft. Good advice! Try to keep as near to that as possible.
How far should rafters overhang on pergola?
The standard overhang of a pergola roof is one foot.
How far can a pergola beam span without support?
There’s not quite enough information here to give a definitive answer, but for decks, a rule of thumb is when supporting joists that span 12 feet, a double ply beam can span in feet a value equal to its depth in inches. Thus, a double 2×12 beam could span 12 feet – with 20′ beams, posts at 10′ might look the best.
How big of a pergola can you build?
A pergola structure can be as wide as you like, as long as it’s built with enough beams to support the roof. The minimum height of a pergola should be no lower than 7’6” to provide enough head room, though most projects call for a range of 8-10′ in height.
How much space do you need between roof rafters?
Builders aren’t bound by standard rafter spacing measurements. But they do tend to space rafters in one of several industry-standard increments, typically either 12, 16 or 24 inches apart.
How big can a pergola be with 4 posts?
This makes the post to post dimensions about 10 feet by 16 feet, which is about the size you will get to use. Anything larger than this standard size could result in needing more posts than the standard 4.
How far apart should pergola beams be?
The cross rafters should be spaced at 680mm intervals ensuring sufficient support for climbing plants to cover the roof of your pergola.
Can a pergola be too big?
Since you do not have to worry about making sure your pergola coincides with anything else, you can have it as large as you want. The first rule of thumb is deciding just how many people you plan to have underneath it when people will come over.
How far apart should rafters be?
But they do tend to space rafters in one of several industry-standard increments, typically either 12, 16 or 24 inches apart. These spacing intervals are measured “on center,” meaning that the measurement is taken from the center of one rafter’s horizontal surface to the center of the next rafter.