The right size beams for deck [closed]


Joists are the repeated structural members that are used to build a deck frame. The minimum size joist to be used in deck construction is not a stand-alone consideration, and is related to the number of footings and beams that will be installed. In general terms, joists spaced 16 inches on center can span 1.5 times in feet their depth in inches. A 2x8 up to 12 feet; 2x10 to 15 feet and 2x12 to 18 feet. The larger the deck, the larger the joists. In typical deck construction, with a ledger on one side of the joist and beam on the other, the size of the joists is driven by the size of the deck based on the general maximum spans mentioned above.

For conventional guard rail post installation, bolted to the side of the framing, larger framing will provide for more strength in the rails. For upper level decks 2x10 is recommended as the minimum size to use for strong guard post connections. 2x6 joists should only be used on ground-level decks that do not require, and will not...

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The span of a beam is dependent on a few variables. The species of lumber, size of lumber and the load it carries. Fewer posts on upper level decks are typically more desirable to the occupants and this drives the use of larger framing materials for longer spans. Beam span maximums are based on a maximum anticipated live load. Building codes for residential decks only require 40 psf.

The longer the joist, the more area of deck the joist supports, and thus the beam supports. For pressure-preservative-treated southern pine no. 2 grade, there is a method that can be used for estimating beam spans for a preliminary design. When supporting joists that span 12 feet with no overhang beyond the beam, a double ply beam can span in feet a value equal to its depth in inches. A double 2x12 beam can span 12 feet; a (2) 2x10 can span 10 feet and so on.

Dimensional Lumber Deck Beam Span Chart

The numbers in gray indicate the distance between the support posts. Numbers in...

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WEST WINDSOR -- The bridge that takes Cranbury Road over the Bear Brook will be replaced starting Monday, Aug. 21 and is expected to be finished in 270 days, Mercer County announced.

Traffic will be closed on Cranbury Road for the duration of the project.

Located between Stobbe Lane and Sunnydale Way, the replacement project work will be done by contractor Marbro Inc. of Montclair, and will cost $3,547,117, the county said in a statement.

Cranbury Road bridge (Courtesy Photo)

The new bridge will have two 12-foot lanes, two 6-foot shoulders and will be supported by curved steel beams with a reinforced concrete deck.

The current bridge is in poor condition due to substructure defects. It was categorized as structurally deficient with a 48.2 rating on a zero to 100 scale, with 100 being the best and zero being the worst.

The detour route for eastbound traffic from Route 571 will be left turn on Clarksville Road and left on Cranbury Road.


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How to Calculate Deck Max Joist Span, Max Beam Span, and Max Post Height

© 2008 by Kelly Smith All rights reserved; content may not be copied, rewritten, or republished without author s written permission. Author s Google profile

When you design your deck, it s hard to overestimate the importance of your deck understructure. It s critical to get right the location of your ledger boards (for an attached structure), beam spans, floor joists, the max post height, concrete post settings, and the deck load area.

Your desired deck design and the understructure s layout for the framing work together closely. During these steps are where the better deck contractors spend a lot of time.

In part 1 of the deck building series, we looked at deck design fundamentals. In part 2 we covered fundamental deck framing concepts. This is part 3 of the series where we cover your choices regarding lumber sizes and spacing.

These lumber and...

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Read each tab carefully. Complete notes as you read the information and try the quizzes in the Notes and Quizzes section after each section. Click on the Overall Picture tab to tie the tabs together.

What you will be doing

In some ways deck building is a rather complex do-it-yourself project, but, since decks do not have to be leak proof or perfectly built, it is well within the scope of most novice builders. This book will provide you with the information you will need to do the work efficiently.

Deck building can be a demanding job both physically and mentally. It is, however, very rewarding. It moves quickly and will give you a pleasing living area for a small price.

Be sure you understand what you are doing before you proceed. The key things to remember in deck building are to be sure you have used all the proper materials and construction techniques, to fend off the decaying properties of water, and to be sure everything is level,...

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I think there are some issues related to the core and plate boundaries. If I position my ship horizontal to the plate I'm aiming at, and shoot into the side of a large mountain, I have like no issues, my FPS drops to like 30 from 60 (v-sync), and I can just chew across the surface smoothly. Same with hitting asteroids, no matter their size I have little to no noticeable impact on performance. I get about the same 30 FPS if I just aim into empty space, so that's mostly all those modules being checked and the hundreds of beams rendering.

If I aim a little lower toward the edge of another plate, my FPS drops to like 10-15. If I aim down on a planet toward the core, even if I'm not currently hitting the core with any beams, my FPS again drops to like 10-15. If I aim at a 3 plate corner and down toward the core, my FPS drops to 5 or less.

So currently there might really be something to destroying a planet and breaking the plates off, if that's what happens. I will have...

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During this section of the tutorial, you will construct a 4 story building with a variety of member types and configurations. You will start by creating the 2nd Floor Plan as shown below. Then you will copy and edit that data to create additional floors. The model is intended to show many of the capabilities of the software all in this one model and as such may be somewhat eclectic.

To invoke the RAM Modeler, from the RAM Manager Menu Bar,

Select Model (or click the Square button labeled Model in the upper left corner).
The 3rd floor of the tutorial model is depicted below for your reference. Refer to it when the written instructions are not clear.

Figure 1: 3rd Floor Plan Figure

Floor Layout Type

Each unique floor should be modeled as a different "layout type" in the RAM Modeler. The power of the Floor Layout Type is that it allows the program to consider floor framing layouts the same way the Engineer considers floor plans in construction...

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The beam for this deck is made of three 2x10s.

Many older decks were built using massive timbers -- 4x6s or 4x8s -- for beams. Some builders still do it that way; using a one-piece beam can save time. But large timbers are heavy and hard to handle. They often warp beyond remedy, and they almost surely will crack over the years. Fastening multiple pieces of 2x lumber together actually creates a beam that is stronger than a single piece of 4x or 6x lumber.

If a deck design is complicated, it often makes sense to build a beam that is about 1 foot too long and cut it to length after the framing is in place. The beams for this deck can be cut to exact length before they are installed.

Prestart Checklist

About 2 hours to build a 14-foot-long beam made of three 2x10s with plywood spacers

Tape measure, circular saw, drill, long bit, hammer, clamps, adjustable or socket wrench

Measuring and cutting a...

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FRAMING TABLES, SPANS - CONTENTS: Framing span tables for decks, porches, other common building floor structures. Deck beam span table. Deck joist span table. Deck joist rule of thumb. Deck framing tables, codes, specifications. POST a QUESTION or READ FAQs about allowable spans for deck, floor, or porch framing. REFERENCES

InspectAPedia tolerates no conflicts of interest. We have no relationship with advertisers, products, or services discussed at this website.

Framing tables for decks: joist & beam spans & sizes.

Recommended or allowable joist & beam spans: this article explains typical spans for deck joists, deck beams, and deck flooring, giving both standard span tables and a quick "rule of thumb" that works pretty well. Our page top photo shows a hybrid deck structure that encompasses a boat. No fasteners were found securing the boat to the deck however. This article explains deck framing. Basic building framing information is found at FRAMING SIZE & Spacing,...

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INDIANAPOLIS -- All lanes of northbound I-465 between I-70 and 10th Street have reopened one day after a car crusher damaged the Rockville Road overpass Tuesday morning.

The stretch of road was expected to be closed for several days.

INDOT crews worked overnight into Wednesday morning to remove four beams in the overpass.

.@INDOT working through the night on the Rockville Road overpass. I-465 NB remains closed. Updates via @rtv6: #rtv6

— Michael (@MikeThePhotog) January 11, 2017

One lane in each direction of the overpass reopened to traffic shortly before 6 p.m. Tuesday.

The next step would be getting a contractor to rebuild the bridgedeck, which means Rockville Road's current traffic configuration would remain the same until then.

Indiana State Police say a total of six vehicles were involved in the crash - one semi with a mobile car crusher on the trailer bed, a utility...

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The material should be pretty obvious - wood. And plenty of it. When you go buy your supplies, make sure you get at least 10-15% extra of everything, because some beams will have unsightly knots, will not be perfectly straight (even straight ones might warp a bit in the sun if left unused for a few days), etc. Same thing applies to screws - get a lot of them.


This one comes before anything else. I've gotten dust in my eyes more times than I care to count, and have felt my ears ringing more than once after drilling and cutting. I don't want to deal with that any more, and want to avoid any damage. You should be very concerned with this as well, so make sure you use a good pair of goggles that seal the space between the lenses and your skin, as well as good ear plugs. Do yourself a favor and get a pair that can be easily removed and put back on (like the pair in the photo) even if your hands are dirty, as you'll need to do this often.


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Deck design is a very personal task. Your homes style should be a major factor or it will feel out of place. Over the years I have seen each metropolitan area developed its own style of design. One builder takes an idea from another and eventually you have a flavor all its own that develops in your city. Then you have a wide selection of manufacturers that have created as many as 2-10 design style products for you to choose from. There has been no lack of creativity in the deck industry over the past 5-10 years.

1) Go Ahead, It's All Free!

Literally tens of millions of decks have been built over the past few decades, which means there’s no lack of well-tested deck design ideas. Check out’s free deck plans or our free deck designer which you can easily customize to fit in your yard and against your house. And spend some time scanning our large “Pictures” section, where you’ll find a huge number of great deck designs. If you see something you like, co-opt it...

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As long as there have been serious shoot-em-ups in science fiction there have been space navies. The analogy is traditional and 'natural,' and even in the rocketpunk era it easily turned back occasional efforts to model the Space Force after the Air Force. Unlike aircraft missions, space missions take days or weeks, often months, not infrequently years. Crews live aboard their vehicles, unlike aircrews or tank crews.

The naval analogy also invites some ways of thinking about force deployments and space operations. In spite of Star Wars and Battlestar Galactica, there is some preference for drawing inspiration from the big-gun era, especially — and a bit steampunkishly — the Mahanian golden age a century ago, before the World Wars and the complications introduced by submarines and aircraft. In this schema there are broadly three warship types, with familiar and evocative names: battleships, cruisers, and corvettes.

Battleships fight other battleships, especially in...

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