6x6 beam span chart. 2×10. 1-1/2 x 9-1/4. 2×12. 1-1/2 x 11-1/4. If you are replacing floor joists, it is important to size them correctly. Floor joists must support the weight of the floor and whatever is on it. The maximum load for a floor joist depends on spacing, the lumber grade, and the house’s location.

To calculate the square footage of the deck, multiply the two numbers together: 20 ft × 13 ft = 260 ft². You chose a board that is 8 ft long and 6 in wide. Convert the width from inches to feet - simply divide the value by 12: 6 in / 12 = 0.5 ft. Let's calculate the square footage of one decking board:

6x6 beam span chart. Kitchen & Table Linens; Kitchen Storage and Org; Kitchen Islands & Carts; ... The lumber used was 6x6 post 6x12 beams, 4x8 cross beams and 2x4 top boards. The angle pieces were ripped to a 4x6 dimension. ... instead of 8' on the other side, I have 16'. I *could* add two more posts to break this up, and have 3 6x12 beams span the 18' distance ...

 · If the lever was 1 foot long and the load was 2 pounds, again 2 foot pounds. Moment is a function of load and span. Imagine if the ridge beam above were rigidly fixed at one end, like a diving board. If the beam extended out 13 feet (156") and the load on the end was our 5040 lbs, the bending moment would be 13 feet x 5040 lbs, or 65,520 ft-lbs.

A 6 x 6 with around a 12-inch span can support a weight of 2000 lbs. with a 1400psi of what we call bending stress. To make it stronger, however, one can use it as double, and if there is no slip across any of the face, one can get more than 4000 lbs to support easily. Beam spanning without any support:WIDE FLANGE BEAMS ASTM-A36 Stock Lengths: 20’ & 40’ 2 C. HENRY STEEL WIDE FLANGE BEAMS (con’t) 3 C. HENRY STEEL Weight Depth of Flange Flange Web Section Per Foot Section Width Thickness Thickness Number Pounds Inches Inches Inches Inches W4 x 13 4 1/8 4 3/8 1/4 W5 x 16 5 5 3/8 1/4 19 5 1/8 5 7/16 1/4

As a general rule, a 6×8 beam can span 8 feet while supporting 8000 pounds. The distance that it can span, however, increases with less weight. The distance of the span also increases or decreases with different types of wood. 6×8 beams on decks, for example, usually don’t support as much weight as that of a house.The sum will be the height of your double header in inches. For example, if the span is 4 feet, add 2 to 4 for a sum of 6. Therefore, the header would need to be made from doubled 2x6s. For odd numbers, round up. This rule of thumb seemed to be consistent with what I had observed as a contractor as being typical of header details in the ...Parallam® PSL. Parallam® PSL Columns. Parallam® PSL columns are strong and consistent. Our manufacturing process uses veneer strands, allowing a significant percentage of each log to become a high-grade structural member. Combine their great load capacity with the strength of Parallam PSL beams for additional possibilities.Then drop down to find the appropriate Fb Value for the span. As the table shows, no 2×8's meet the span and spacing requirements, but a 2×10 with an E of 1,300,000 psi and Fb of 1093 psi can span 15 feet 3 inches - more than enough. A 2×12 with an E of 800,000 psi and Fb of 790 psi also works, since it can span 15 feet and 10 inches ...Solid Wood Beam Span Tables. Posted on September 25, 2020 by Sandra. Glulam beams building lines floors joists attachment patio cover carport arbor stock and custom glulam anthony wood beams and timbers. Wood Beam Design And Installation Considerations Weyerhaeuser.I used these 6x6's to build a retaining wall in my side yard to build a pool. Most of the 6x6's were in great shape with little damage. There were a few that had corners rounded or still showing bark. All timbers were straight and square and that is hard to find in lumber that large and long.٠١‏/١١‏/٢٠١٠ ... Field framed rafters and ceiling joist spans shall be in accordance with the span tables published in the ... BEAM(S). 6X6 POST. NOTCHED POST.How Far Can A 2 6 Span Without Support Joists Rafter Mellowpine. A Simple Span Beam With Longitudinal Spring B Without Scientific Diagram. Rafter span tables cantilevers in the 2016 code jlc how far can a 6x6 beam span without support spans beams and joists oh my wood it s real solved specify a steel beam with span of 6m the chegg. Deck beams ...span floor 4-2x12 9-11 2 8-7 2 7-8 2 FCCIP 425 Main St., Ste 25 Greenfield, MA 01301-3393 FCCIP STAFF Phone: 772-2026 Fax: 773-0896 James Hawkins, Building Commissioner, Ext. 123 James Cerone, Local Building Inspector, Ext. 124 James Slowinski, Electrical Inspector, Ext. 126 Andy French, Plumbing Inspector, Ext. 125Oct 9, 2023 · A deck joist span is a distance between two load-bearing points. Deck joist spacing usually is 16 inches on center but can vary between 12 and 24 Inches. The deck joist spacing you choose will depend on several factors, including the size of your deck, beams, the deck foundation, and the type of decking you plan to install.

The Ontario Building Code | Steel Beams 9.23.4.3. Steel Beams (1) The spans for steel beams with laterally supported top flanges shall conform to Table 9.23.4.3. for floors and Tables A-20 to A-29 for roofs and floors. Table 9.23.4.3. Maximum Spans for Steel Beams supporting Floors in Dwelling Units. Forming Part of Sentence 9.23.4.3.(1)Here’s the deal; The space is about 25′ W X 30′ L. There is an existing steel I beam that runs the 30′ length, supported on each end by pockets in the poured concrete foundation walls, and with 2 steel support columns, all spaced roughly equally apart. The beam supports the main level floor which is framed with 2×10’s, 16″oc.Span calculations derived from the American Wood Council's "Span Calculator" Program, available at www.awc.org. 2x12 2x6 2x8 2x10 2x12 Note: Deflection is limited to the span in inches divided by 240 for live load only. Maximum spans are inside to inside of bearings ... SPF Span Chart Author: p3 Created Date: 7/18/2018 4:13:57 PM

Moment = sigma*Z, where Z is the section modulus = width *height^2/6 for rectangular section. 1200 *Z=21900, so Z needs to be 18.25. Pick a 12" height, so 18.25 = b* (11.25^2)/6, thus b is less than 1.5" so a 2X12 will work. If you tie your 8 ft rafters together at just the one the sheathing joint (center of length of room or 8 ft from one end ...

The user enters the member geometry, adds loads, holes and other relevant data and then selects a product for analysis. The program helps the user identify which of Boise Cascade's engineered wood products meet the demands of the application. VERSA-LAM® laminated veneer lumber (LVL) beam and header span and size charts available for download.

According to the 2012 IRC codes any beam, joist, or header shall never have a bearing of less than 1 1/2″. Anything 5′ and above we always at least double cripple. On longer spans the beam may require much more bearing space as indicated by this table. Fastening. Beams of more than one ply must be fastened together with either nails or bolts. Look at the span tables for the beam you want to use, with the structural arrangment you have. If there is considerable deflection on the wood beam, and it is not damaged, then the beam is seriously undersized. Replacing with a steel beam, which will be stiffer, may not solve the problem if it too, is undersized for the load. Check the span tables.By using the span tables, engineers and architects can quickly and easily find the right type of tube for their project. ... Dimensions And Section Properties Astm A1085. Beam Load Table Bro. Guide To Steel Beam Calculations 2023. Ready Header Additional Column Load Tables. ... Sight And Sound Theatres Branson Mo Seating … · If the lever was 1 foot long and the load was 2 pounds, again 2 foot pounds. Moment is a function of load and span. Imagine if the ridge beam above were rigidly fixed at one end, like a diving board. If the beam extended out 13 feet (156") and the load on the end was our 5040 lbs, the bending moment would be 13 feet x 5040 lbs, or 65,520 ft-lbs.beams since these members contain three wood pieces. The shear capacity indicated in Table 1 is the shear strength of the wood alone since the full beam reaction must be transferred through the wood side pieces at end bearing supports. The values in Table 1 are based on the steel plate being A36 steel. This is a reasonable

1 day ago · Since the 26-ft.-wide building is 6 ft. wider than the 20-ft. width from the table, calculate the following: 0.75 in. per ft. × 6 ft. = 4.5 in. Subtract the above number from the header span for a 20-ft.-wide building to find the allowable header span for a 26-ft.-wide building: 3 ft. 11 in. – 4.5 in. = 3 ft. 6.5 in.When building a deck with 7-ft. joists, you know the beam can span somewhere between 7-7 and 8-0, but you don’t know exactly where. Check with your local code official, or simply drop back to the shorter value in the table and assume the allowable span is 7-7. Section R507.6 calls for the built-up beams to be fastened together with a minimum ... A 4×4 today is typically 3-1/2" by 3-1/2", which gives it a depth of 3-1/2", and a cross-sectional modulus of almost 5" (4.95"). When used horizontally as a beam, its span can range from 1'-4" to 4'-0" according to the 2018 IRC, although in some circumstances, it can span up to 6'-11". If planning to use a 4×4 as a ...Drilling. There are two limitations to drilling holes in joists. To avoid reducing a joist's bending resistance, no holes can be closer than 2 inches from the top or bottom edges of the joist. In addition, the diameter of a hole is limited to one-third the depth of the material. In a 2x8, for example, the maximum hole diameter is 2 3/8 inches ...Mar 2, 2022 · As a general rule, a 6×8 beam can span 8 feet while supporting 8000 pounds. The distance that it can span, however, increases with less weight. The distance of the span also increases or decreases with different types of wood. 6×8 beams on decks, for example, usually don’t support as much weight as that of a house.Adjustable Light Aluminum I-Beam Frequently used for HVAC/AC Frames (see pic below) I-Beam slides within AC Clamp Channel to adjust spacing between uprights Size in Inches (E x M x S / T1) 3 x 1.374 x 2.5 x .093 / .124 6061-T6 0.994 #/ft 10578-36 x 36" Light I-Beam 10578-72 x 72" 16-61-009 x 108" 16-61-012 x 144" 16-61-015 x 180"The weight of an I-beam varies greatly based on its dimensions and length. For example, an 8-inch, 10-pound steel I-beam weighs approximately 10 pounds per foot, so a 20-foot beam would weigh 200 pounds. Always refer to the manufacturer's data or a steel beam weight chart for specific I-beam weights. 10.Center post is 6x8 the end posts built into end walls are 6x6.. BEAM: SEE SPAN CHART. & ATTACHMENT DETAIL. 30" MIN. ... CHART. SHOW: - TYPE OF ROOF SHEATHING (i.e.7/ 16 .... Feb 27, 2021 — How far can a 6x8 beam span ... Example: 500 category filterable, sortable, updatable One of the categories in the table of categories that hel. top of ...Beams shall be constructed in accordance Figure R507.6 with plies fastened in accordance with Table R602.3(1). Allowable beam spans shall be in accordance with Table R507.6. Beams shall be permitted to cantilever at each end up to ¼ of the beam span. Splices of multi-span beams shall be located at interior post locations. JOISTS POST BEAM BEAM ... Hardwood of the same dimensions will span promote, as is steel, but the cost difference may be sign. On this article, we'll explain like far a common 6×6 softwood beam or title could spacing, and its load capacity. We'll and compare 6×6 beams with triple 2×6 beams, and provide a span chart for 6×6 beams.LVL beam span :- an LVL beam can span up to 60 feet due to its strength and is much stronger than traditional lumber. Generally, you can find LVL beams in a 4-foot increments starting at 24 feet and going up to 44 feet long, with special customize size up to 60 feet. LVL beam thickness is usually between 1-3/4″ (one ply) and 7 inches (4ply).Jan 9, 2016 · Load Deflection Limit of Span/360, Load Duration Factor of 1.00. For Dry use condition. RAFTER SPANS IN FOOT-INCH 30# SNOW LOAD 10# DEAD LOAD L/240. DESIGN CRITERIA: Strength – 30 lbs. per sq. ft. snow load, plus 10 lbs. per sq. ft. dead load. Deflection – Limited in span in inches divided by 240 for live load only A cantilever has a joist that attaches to the house and then overhangs a beam to achieve a larger platform without moving the posts. The joist used is similar to that in a flush beam application and thus is of the same strength. Cantilever: The cantilever is the overhang of the deck beyond the supporting beam. The 1/3 rule is among the common ...The following chart table gives cross section engineering data for ASTM Structural Steel Angle as follows: Weight per foot; Cross Section Area ; Area Moment of Inertia ; Wall Thickness; Related Resources: AISC, ASTM Angle (Steel) AISC, ASTM Angle Unequal Leg ( Aluminum ) AISC, ASTM Angle Equal Leg ( Aluminum ) AISC, ASTM Angle Unequal Leg ( Steel )Hi- I am building an outdoor modular pergola using stock corner brackets (black, powder coated). Planning to use 6x6 Redwood, but wondering how long I can make the longest horizontal span. Do you think I can get to 17' safely? not planning to have any significant weight above, just some canvas sails. thanks in advance!Beam and Column Load / Span Tables June 1993 DESIGN GUIDE 3. Steel Framing Alliance Steel The Better Builder. Created Date: 8/2/1998 11:23:26 AM ...Beam width should be 1/4 to 1/3 beam depth. You can use LVL beam calculator to find required size of lvl beam. Depth of an LVL beam is calculated with the help of LVL beam calculator based on the rule of thumb for estimating the depth of manufactured beams which is to divide the span length by 20, and beam width should be 1/4 to 1/3 beam depth.

(**) = Maximum load (recomended) for given span is shear limited. SAFETY FACTOR : 2.5:1 Load ratings are based on uniformity distributed loads. Cantelever not to exceed 30% of span or 3'. Beam Weight / LF : 6.5" = 3.52 lb, 7.5" = 3.67lb JOIST CLIP ASSEMBLY ALUMINUM BEAM Aluminum Beam Data ALUMINUM BEAMSThus, a triple 2×8 deck beam can span maximum distance of 10-11 feet. How far can a triple 2×10 beam span. A #2 grade southern pine 2×10 triple deck beam can span upto maximum distance of 12 to 13 feet with a total load of 50 psf (40 psf live load + 10 psf dead load) with a deflection limit of L/360. Thus, A triple 2×10 deck beam can span ... The structural steel tubing span tables are an invaluable resource for engineers and architects who need to make sure their structures can withstand the weight of their components. Knowing the maximum span of a given steel tube is essential in preventing the failure of a structure, be it a bridge, an office building, or a skyscraper.Beam Spans Multi-ply equivalents are acceptable (e.g., 2 ply 1.75" = 3.5" and 3 ply 1.75" = 5.25"). Flashing tape which is the easiest and most economical way of protecting deck members is required on all horizontalSpan Lengths) and determine the number of footings needed based on the size of the deck. I prefer a double 2x beam because. it can rest on notched 6×6 posts. The 2-1⁄2-in.-thick leg on the back of the notch bolts to the beam. Triple 2x beams can make sense, but require a structural connector to join to the post.In many circumstances, 16 inches would be your standard spacing for shed floor joist, but this is just a rough guideline. Two options that arise could be your wider 24"' and your narrower 12" options for spacing. 2x8s are used frequently for these projects. 2×8's come standard at 1-¾ inch thick. In this situation, your floor joist ...6x6 post spacing. Over a 20 ft 8 " span, would it be ok to just use 3- 6x6 posts. I was going to come in 16"s on the ends and set 2 posts, leaving me with the center post about 9 ft centered from the side posts. I am going to knotch the posts and run 2x8's on each side of the posts for my beam, and and use 2x8's for my floor joists.H-beam dimensions are typically represented as height (H) x width (W) x web thickness (t1) x flange thickness (t2). For example, a beam with dimensions 200x100x5.5×8 would have a height of 200 mm, width of 100 mm, web thickness of 5.5 mm, and flange thickness of 8 mm.

For each application, a PDF download is available. Also see Using These Tables and five Examples showing how to read the table values, plus other important information. Refer to SFPA’s publication Southern Pine Maximum Spans for Joists & Rafters (download in Publications) that includes all 46 tables. Design assumptions and calculations using ...When you build with red iron materials you can trust it's going to provide the sturdy framework your structure needs at an affordable price. Customers also enjoy having more functional space when they say goodbye to poles and other obstructions. A red iron structure also allows for more overhead clearance for those who need to store ...Total depth of beam = effective depth + diameter of bar/2 + clear cover size. Total depth D= 225mm, It should be taken as 225mm. Width of beam = D/1.5, 225/1.5 = 150mm, so width of beam should be not less than 200mm in case of Block wall and 225mm in case of Brick wall.Oct 9, 2023 · W flange beams and allowable uniform load.. Note that these calculations are rather conservative - based on steel with yield strength 36 ksi and the ASD - Allowable Stress Design - method. It is also common to use steel with yield strength 50 ksi and also the LRFD - Load and Resistance Factor Design - method.. For full table - rotate the screen!Stee Tb Institute Brochure: Dmi ensoi ns And Secoti n Propereti s ASTM A 801 steeltbeinsttte.org 2 Dimensions and Section Properties of Round HSS 6 Dimensions and Section Properties of Square HSS 10 Dimensions and Section Properties of Rectangular HSS b Nominal width minus 3 times the design wall thickness, t (in.) C Torsional shear constant ofJul 10, 2015 - Explore Gabriel Flores's board "6x6 beam projects" on Pinterest. See more ideas ... Barn beam coffee table Timber Furniture, Reclaimed Wood ...Hi- I am building an outdoor modular pergola using stock corner brackets (black, powder coated). Planning to use 6x6 Redwood, but wondering how long I can make the longest horizontal span. Do you think I can get to 17' safely? not planning to have any significant weight above, just some canvas sails. thanks in advance!Square Structural Tube Per. ASTM 1085, table chart HSS Hollow Structural Section Square Structural Tube. This specification covers cold-formed welded carbon steel hollow structural sections (HSS) for welded or bolted construction.Span exceeds 26 feet in length. Check sources for ava ilability of lumber in lengths greater than 20 feet. ALLOWABLE SPANS FOR OPEN BEAM CEILINGS 1, 2, 7 Lumber Grade Lightweight Roofing Tile Roofing DOUGLAS FIR-LARCH NO.2 OR BETTER Nominal Size (inches) O.C. Spacing (inches) DL = 15 psf DL = 25 psf LL = 20 psf LL = 20 psf 4 x 4These factors include: Our deck material calculator will tell you the size of the joist boards necessary based on the square footage of the deck. Footers should be set 6 inches deeper than the frost line for your area. This depth will determine how much concrete you need and how long your footers should be. For cold climates, the frost line is ...Beams and Columns Deflection and stress, moment of inertia, section modulus and technical information of beams and columns. Related Documents . Aluminum Channels Dimensions and static parameters of aluminum channels. Angle Calculator - Carpenter's Square Calculate angles with a straight board across carpenter's square.8. Use rope to raise the board if the beam placement is high, and the board is very heavy. Set one end of the board up on a ladder, attach rope to it, and tie this to the top of the post it will be fastened to. Go over to the board end on the ground, walk this up a ladder, attach rope to it, and tie this to its post.Beams are horizontal, posts are vertical. "6x6 beams on galvanized anchor brackets" sure sounds like you are using "beam" to mean post, which confuses your question. A sketch would be helpful. I'm unclear whether you are asking about joists, or a beam to support joists, or what. –Span Span refers to the total distance in feet and inches that a beam can stretch without support. Saying that a 6×8 beam can span 8 feet while supporting 8,000 …Please note: This older article by our former faculty member remains available on our site for archival purposes. Some information contained in it may be outdated. Using span tables to size joists and rafters is a straight-forward process when you understand the structural principles that govern their use. by Paul Fisette – ©2003 Wood is naturally engineered […]I have already placed 2 6x6 columns bolted into concrete on both sides. The beams are 16 ft apart. Are there any wood (preferably cedar) beams that can span that …Two 2 X 10" s should be fine but if not just add another one. My last lumber swing set had two main posts (5" logs) per end. These 'clamped' around the beam log and lagged through it. Then they were buried in 30"-36" x 12" dia. of concrete and still managed to crack those footings.What size lumber for a 20 foot span. as per general thumb rule and guidelines, for a 20 foot span, you will need atleast 2×12 size of lumber/ floor joist when spaced at 16″ apart. Thus, a 2×12 size of lumber can allow to span 20 feet. For a 20-foot spans, the lumber has to be at least 12 inches in depth used as floor joist.

The single-ply beam spans from the IRC's prescriptive table allow for a simple 7x7 deck or 8x8 deck with cantilevered joists using only single members, a ledger connection, and two footers. That's an economical solution. ICC The 2018 IRC also includes a post-to-beam connection detail for 4x4 posts and single-ply beams.

If the following data is entered into the FootingPad calculator, the footing size recommended is a 16" diameter FootingPad. Here's how we get there: Building Width: 40 feet Soil Capacity: 3000 psf Post Spacing: 8 feet Snow Load 20 lbs. / square foot Surface area of footing (in sq. ft) = Total load (in lbs.) on footing / Soil Capacity (lbs ...

Versalam lvl beams headers columns floor beam span tables calculator timber steel bination in beams 215 green st honesdale pa 18431 forest dynamics models for conservation. ... angle size and moisture content on the edgewise bending strength stiffness birch plywood sciencedirect how far can a 6x6 beam span without support. Related.Deck beams are the beams that hold the floor boards for decks. The beam span for most deck beams is less then 16 feet (4.87 meters) but can be as small as 8 feet (4.87 meters) depending on the thickness of the beam. These special beams support the weight of the main floor on the deck are an essential for overall structural integrity.Key Differences Between H Beams and I Beams. A. Weight distribution: H Beams have a more evenly distributed weight, while I Beams have a concentrated weight in the center, resulting in different load-bearing capacities. B. Load-bearing capacity: H Beams generally have a higher load-bearing capacity due to their larger flanges and web height.  · Planning a 12’ x 14’ hip roof (outside to outside), set on 6x6 pressure treated southern yellow pine #2. Common, jack, and hip rafters will be 2”x8” spaced 16” on center. Roof pitch is 6:12 with architectural shingles and solid sheathing. ... I’ll also have a cross beam on each end to span the 12’ gap. Was hoping to use a single ...Slide over to the fifth column of the table to find the typical beam depth range for a 35-foot beam span. The range of beam depths is shown as W16-W18. Therefore, the table indicates that the nominal wide-flange beam depth for a 35-foot beam (10-foot max. spacing and supporting 100 psf live load) could be as shallow as 16-inches (indicated by ...I have a small pole barn with 6x6 beams on 7 feet center the barn is 20 feet wide 36 feet long am planning to put in a triple 2inch x 12inch x 20 feet long beam making it a 6x12x20 .. the question is how much can i lift from this beam in the middle....Sep 14, 2020 · to the span in inches divided by 360, and is based on live load only. The load duration factor, C D, is 1.0. Listed spans are for wet-service conditions, pressure-treated Southern Pine floor/deck joists, MC > 19%. Check sources of supply for available grades and sizes. Maximum spans were calculated using design values effective June 1, 2013.

no limit 2 unblockedcalifornia blm land maphomes for sale in perryville ar13000 steps to calories 6x6 beam span chart aladdin bail bonds riverside [email protected] & Mobile Support 1-888-750-6073 Domestic Sales 1-800-221-9284 International Sales 1-800-241-4675 Packages 1-800-800-4149 Representatives 1-800-323-5757 Assistance 1-404-209-2703. Thumb rule for Glulam beam:– size of Glulam beam represented by their width and depth, as per thumb rule & general guideline, depth of the Glulam beam is 1/20th of span in inches and their width is 1/3 to 1/4 of the depth. If beam spanning is 20 feet in length, then their depth = (20 × 12) ÷ 20 = 12 inches and width is 12/3 = 4″, thus you .... maher terminal empty return Commercial Lumber Sizes Chart Table . The following data is standard reference and size data for commercially available lumber within the USA. All data is in imperial units (Inches). ... I-beams and web joints. Machine grading measures a characteristic such as stiffness or density that correlates with the structural properties of interest, such ...The width of the building or distance from the wall to the support beam determines the rafter span, spacing, and slope. Lean-to rafter spacing commonly is 16” and 24” on-center depending on the type of roofing finish selected. Rafters at 24” centers with strapping to support metal roofing are less expensive than those at 16” centers ... pi kappa phi national examgass haney funeral home We recommend a wood span of 12 feet per section. (An overall size ... Please click this link to see our rough cut bracket options: 6x6 Rough Cut Lumber Brackets. bakersfield craigslist farm and garden by ownerthe hawkeye obits New Customers Can Take an Extra 30% off. There are a wide variety of options. The flitch plate would allow you theoretically to take 2 2x10 beams and increase its strength equivalent to maybe 3 2x10s or even 4 2x10s. The engineering tables will tell you the exact strength of your chosen combination. Now, you have 3 2x10s which is a bit problematic. Normally the flitch plate goes in the middle, between an equal number of ...to the span in inches divided by 360, and is based on live load only. The load duration factor, C D, is 1.0. Listed spans are for wet-service conditions, pressure-treated Southern Pine floor/deck joists, MC > 19%. Check sources of supply for available grades and sizes. Maximum spans were calculated using design values effective June 1, 2013.What You Should Use This Calculator For. You should use this calculator to compare materials, diameters, and wall thicknesses to find out how to make your designs safer. For example, lets say your local metal distributor has 1.75x.095 tube and 1.25 solid bar on sale from some huge bulk purchase that fell through with another customer.