How To Build A Long Deck Beam
How to build install a built up structural beam for decks porches simliar structures.
How to build a long deck beam. The two beams you can make out of 2 by 10 dimensional lumber are double beams and built up beams. We describe building the beam out of 2x lumber in four easy to follow steps. This beam serves as the header joist because joists will be attached to its inner face. Building codes for residential decks only require 40 psf.
These crucial parts give your deck strength and stability and lay the framework for the finished product. Set the double 2 12 deck beam on the posts and fasten it to the long 2 6 with 16d galvanized box nails. In this episode we show you how to set the metal hardware build and position the beam adjust for level and protect this structural component from the elements. For example a beam that sits on top of a 4 by 4 piece of lumber will only need to be 3 1 2 inches wide if it is to remain flush with the post.
Building and leveling a beam. Built up beams are boards nailed together. Be sure the deck beam projects several inches past the edge of the deck for later trimming. However a beam that sits on top of a 2 by 6 support wall will have an actual thickness of 5 1 2 inches.
For simplicity s sake we will plan on building a beam that is 5 1 2 inches wide and eight feet long. It may be only inches from the ground but the carrying beam in a grade level deck does the same job as a structural beam 10 ft. It should be built strong set level and protected against rot. Build the two 14 foot long beams that will be perpendicular to the house.
Some long wood beams are actually made of engineered wood which is mix of materials that includes wood. When you re building a deck few things are as exciting as seeing your plans come to life. For pressure preservative treated southern pine no. This tutorial shows you how to build deck beams headers and outside joists.
Nail the deck beams. A double beam is simply two lengths of lumber that sandwich the top of a beam. This article describes how to build a beam used to support a deck or porch floor or similar structure. The two rim joists will also serve as deck beams to help carry the weight of future remodeling.
All the prep starts to pay off as you begin to build the frame. Attach beam to the tops of the posts using adjustable post caps. Nail the 2x12s to each other with three nails every 12 in one close to each edge and one in the middle. 2 grade there is a method that can be used for estimating beam spans for a preliminary design.