# Question: Can You Use 2×4 For Deck Joists?

## Are 2 2×4 as strong as a 4×4?

So a standard 4×4 is actually much weaker than two 2x4s side by side.

The single 2×6 is 68% stronger than the 4×4 for vertical loads as you describe..

## How much weight can a 2 by 6 hold?

Fine Homebuilding notes that 2-inch by 6-inch garage joists will support a weight of up to 50 pounds per square foot.

## Can you use 2×4 for joists?

2×4 are suitable for ceiling joists where the LL is like 20 Lbs. If you got a good species with the highest Modulus of Elasticity and Best grade and use like 12″ o.c. – you might get 8” span.

## What size joists do you use for decking?

In general terms, joists spaced 16 inches on center can span 1.5 times in feet their depth in inches. A 2×8 up to 12 feet; 2×10 to 15 feet and 2×12 to 18 feet. The larger the deck, the larger the joists.

## How far can you span with a 2×4?

Joist spacing of 24 inches is allowed for spans between 16 to 20 feet using 2-inch by 10-inch lumber of these three grades. How much weight can a 2×4 joist support? If there is no strong wind, a 2×4 measuring at least 8 feet can support at least 1,000 pounds vertically.

## Are two 2×4 as strong as a 2×8?

In bending, a joist composed of two 2×6’s (true dimension 1.5 inches x 5.5 inches) are slightly stronger than a single 2×8 true dimensions 1.5 inches by 7.25 inches.

## Can you use 2×4 for Shed Foundation?

1 Answer. You can frame a whole house with nothing but 2×4, but it’s easier to do a shed, as you won’t need engineering, probably. … You can use them for roof, floor and even wall framing, but few sheds will need trusses for walls.

## Can I use 2×4 for decking?

For the deck surface, you can use 2x4s, 2x6s, or 5/4x6s. The 5/4 decking (pronounced “five-quarter”), available in cedar and pressure-treated fir, is 1 inch thick and 5-1/2 inches wide with rounded edges that make for a splinter-free surface.

## How much weight can a 2×4 deck hold?

around 1,000 poundsAssuming that the load is square and there is no wind, the average 8 feet 2×4 could handle around 1,000 pounds vertically. Of course, it’s wise not to push the material up to its limit, use brace and alike to secure the 2x4s whenever it’s needed. Similarly, can you use 2×4 for deck joist?

## Can I use regular wood for a deck?

Pine or White Wood Both pine and standard “white wood” lumber work well for deck construction. Some pines are nearly as resistant to rot as cedar, and both of these options take paint well. When it comes to cost, there are few cheaper options.

## How thick should decking boards be?

Select 5/4 wood at a minimum. This dimension is 1 to 1-1/4 inches thick. Any less thickness produces a springy, weak deck. Joist spacing also determines how thick your deck boards must be.