Assuming it’s “Lodgepole Pine” (Idaho Pine and Ponderosa Pine is slightly less) and it’s grade is a No. 2 and better (no loose or missing knotholes), then a 4×6 spanning 18′ will support about 105 lbs. loaded at the mid-span (slightly higher if it’s loaded at third points or further from the center point).

## How much weight can a 4×6 post support vertically?

So, which is better? The load capacity of a 3-foot #2 grade 4×4 is 17,426 pounds, and a similar 6×6 is 20,834 pounds or 16% better. However, an 8-foot 4×4 supports 6468-pounds and 2339-pounds at 14-feet, while a 6×6 is 18032 and 10550-pounds respectively – or 64% and 78% more load capacity.

## How strong is a 4×6 beam?

In general, the bending strength of a beam is directly proportional to its width and directly proportional to the square of its height. In the bottom case the 4×6 is theoretically 2² = 4 times as strong as a single 2×6, but since there are two of them it is only twice as strong as two2x6s.

## How far can a 4×6 span without support?

A Redwood 4×6 beam should span no more than 6′ between supporting posts.

## Can you use a 4×6 as a beam?

Any timber size can be used as a beam. However you need to be an Engineer or other qualified building practitioner to determine appropriate spans/loadings for whatever you are constructing.

## How much weight can a 6×6 treated post support?

A 6×6 with 12′ span can support 2000 lbs. if you assume a conservative 1400psi bending stress. If you do a good job bonding the two members together, your double 6×6 can support more than 4,000 lbs.

## How much weight can a 4×8 support horizontally?

If you’re wondering how much weight can a 4×4 hold, we’re here to help. A 4×4 horizontally spanning 8-feet can typically carry 500lbs safely in the center, and 1,000lbs spread evenly across the span before sagging excessively. Properly supported at 16” centers, and it can support up to 4,000lbs.

## How much weight can a 4X6 post support horizontally?

4×4 can hold up to 4,000 pounds when laying horizontally with the right support. Vertically, a 4×4 should support 4300 pounds but can hold significantly more. The amount of weight that a 4×4 can hold depends on several factors like wood grade, species, and load type.

## Can I use 4X6 for deck post?

Size of the deck Most professionals will encourage you to consider going with a 6×6 deck post form the outset of the project. Decks that are going to be built higher than just a few feet off the ground will likely need something more substantial than a simple 4×4.

## Is a 4×6 stronger than a 2×8?

In similar terms this is a measure of objects resistance to rotate. From contributor A: Unless it comes a ways from the pith of the log it will be stronger if it comes from a “boxed heart” timber. A good 2×8 will support as much as a 4×6.

## Is a 4×6 as strong as a 6×6 post?

So are they? As long as you are talking about comparing posts with the same species of wood, then no, a 4×6 post is not as strong as a 6×6 post. A 4×6 is just a 6×6 with a third of the material cut away.

## How far can a 4X8 span without support?

Dimensional Lumber Deck Beam Span Chart Joist Spans Douglas Fir-Larch, Hem-Fir, Spruce-Pine-Fir, Redwood, Cedars, Ponderosa Pine, Red Pine 4X6 6′-2″ 4X8 8′-2″ 4X10 9′-8″ 4X12 11′-2″.

## How far can a 4×6 roof beam span?

In general, the maximum span for a 4-by-6 beam is 6 feet between 4-by-4 posts. If you move up to 4-by-8, you’re usually allowed to span up to 10 feet between posts.

## Can a 4×6 be used as a header?

In the case of 2×6 exterior walls you can insulate between the side members. Yes, a 4×6 Douglas fir #2 is fine, even with the wider 4′ opening. Here, we use either 2-2x header or 1-2x header that is up-sized to the next larger size.

## How far can a 4 by 4 span?

If you opt to space your 2x4s at 16” on center, then your maximum span will be 7′ 3” with SYP. This assumes that the joist is not cantilevered and terminates with support on either end. If you opt to space your 2×4 joists at 24” on center, then you can only span a distance of 6′ 4”.

## What is 4×6 lumber used for?

These boards are often used for columns, beams, rustic fireplace mantels and mantel brackets to name a few. Left wet and construction grade. This material is S4S meaning all four sides are planed smooth.

## How far can a 6×6 header span?

A 6×6 header can span from 2′-1” to 7′-6” depending on location, loads, and other factors.

## What is stronger 4×4 or 2×6?

The strength is determined by the load direction. A 2×6 is stronger lying horizontally with the load applied to the 2″ edge facing up. compared to any 4″ side of the 4×4.

## How much does a 16 foot 6×6 weigh?

Table of Pressure-Treated Lumber Weights Weight of Pressure-Treated Lumber 4 x 14 3.5 x 13.25 13.21 4 x 16 3.5 inch x 15.25 inch 15.2 lbs 6 x 6 5.5 x 5.5 8.61 6 x 8 5.5 x 7.25 11.35.

## How tall can a 6×6 post be?

Recommended Maximum Heights The AFPA recommends that six-by-six posts be no taller than 14 feet, regardless of the tributary load they’re required to carry.

## How long are 6×6 posts?

Product Specifications Size & Dimension 6-inch x 6-inch Length 22-ft Size & Dimension .15 Wood Treatment Treated Wood Specie Yellow Pine.