What Is The Strongest Roof Truss Design?

What Is The Strongest Roof Truss Design
Design Factors – There is no “strongest” truss, but rather, one that is most appropriate for a specific application. There are four basic types of truss design: dropped chord, raised chord, parallel chord and scissors. Dropped chord uses a beam on two load-bearing walls and can restrict interior space.

Which truss design is the strongest?

The warren-truss design worked best. It held a high of 66 pounds and the average weight held was 43.6 pounds. The k-truss design held an average of 31 pounds, the pratt design had an average of 13.6 pounds.

What is the best roof truss?

Standard fink trusses –

Considered the most common roof truss, a standard fink adds support to a property with extra beams placed in the middle of the internal web (which is a W shape). It is the ideal truss for new buildings and/or extensions as it offers superior strength and stability.

What part of a truss is the strongest?

Roof trusses are an amazing feat of engineering. They’ve been used in construction for centuries, providing strength and stability to countless important structures. One of the best parts of wooden roof trusses is that they are so strong they don’t need to be changed for generations.

  • This may sound too good to be true, but that’s the beauty of using these outstanding structures in your home or building.
  • How strong, exactly, are roof trusses? The number of pounds a roof truss can support varies depending on the structure of the roof and how the house is built.
  • Wood roof trusses transfer the weight from the roof to the supporting walls, so the load it can bear depends on that as well.

But overall, you can expect the ceiling to support at least 10 pounds per square foot. As for floor trusses, the typical floor truss can support 40 pounds per square foot. As wood truss manufacturers, we can give you a precise measurement of how much weight your trusses can hold to make sure it meets your requirements.

We use our team of technicians, engineers, seasoned experts, and advanced technology to construct the best truss roof system and floor trusses in the San Diego area. Each wood roof truss is specifically designed for the building we’re working with, ensuring that it’s as strong as can be for that unique building.

The roof trusses are pre-constructed and brought over to the site when complete. The installation of roof trusses is much quicker than the installation of rafters, so the trusses spend less time exposed to the elements and potentially damaged. Whether it’s a home, commercial building, or barn, as professional roof truss manufacturers, we make sure the roof trusses will withstand anything.

  1. For example, roof trusses can weather even the most extreme storms, including hurricanes.
  2. While we don’t get many hurricanes here in San Diego, expertly crafted wood roof trusses in Florida have kept countless homes safe during huge storms.
  3. Wooden roof trusses are also built in our indoor factory, protecting the timber from the elements until it’s time for installation.

By being in a controlled environment, the wood isn’t exposed to potentially damaging outdoor materials like storms, humidity, and even insects. This ensures the wood is as safe and strong as can be, and the trusses are of the utmost quality. Another part of the reason wood roof trusses are so strong is because they’re essentially made of interlocking triangles.

Triangles are considered the strongest shapes, because when force is applied to the top point, that weight is distributed evenly to both sides and supported by the triangle’s large base. This stability is why the shape is so common in wood roof truss manufacturing. For a first-hand example of how strong roof trusses can be, consider the structures that use them.

Here are just a few:

Cathedrals Agricultural Buildings Airport Terminals Aircraft Hangers Sports Stadiums Auditoriums

These massive buildings need a lot of support, and wooden roof trusses are up for the task. There is so much more to know about roof truss systems and the strength they can provide to a structure. If you’re in the San Diego area considering installing a wood truss system, feel free to reach out to any of us at Stone Truss!

What makes a truss strong?

Analysis – Because the forces in each of its two main girders are essentially planar, a truss is usually modeled as a two-dimensional plane frame. However if there are significant out-of-plane forces, the structure must be modeled as a three-dimensional space. The analysis of trusses often assumes that loads are applied to joints only and not at intermediate points along the members.

  • The weight of the members is often insignificant compared to the applied loads and so is often omitted; alternatively, half of the weight of each member may be applied to its two end joints.
  • Provided that the members are long and slender, the moments transmitted through the joints are negligible, and the junctions can be treated as ” hinges ” or “pin-joints”.

Under these simplifying assumptions, every member of the truss is then subjected to pure compression or pure tension forces – shear, bending moment, and other more-complex stresses are all practically zero. Trusses are physically stronger than other ways of arranging structural elements, because nearly every material can resist a much larger load in tension or compression than in shear, bending, torsion, or other kinds of force.

Are Taller trusses stronger?

Q: What determines the capacity of truss? – Angel: Truss capacity is based on the material used to build the truss, the type of connection and the height of the truss. A general rule states that the taller the truss, the stronger the truss. While height is a factor in truss capacity, the width does not necessarily change the strength. What Is The Strongest Roof Truss Design Truss grid at Education Nation

Which is stronger Pratt or Howe truss?

The Howe truss had an average load-to-mass ratio of 512.61 and deflected 13.23 mm on average. The Pratt truss had an average load-to-mass ratio of 528.93 and deflected 9.53 mm on average. The Pratt truss deflected the least and had the highest load-to-mass ratio.

Which type of roof lasts the longest?

Roofing material that lasts the longest are concrete, clay or slate tiles. These materials significantly outperform other natural products like wood shakes or any manufactured roofing materials including asphalt shingles and metal roofing. Although these materials have a good lifespan, they are not as durable.

Which shape of truss gives better rigidity?

This set of Strength of Materials Multiple Choice Questions & Answers (MCQs) focuses on “Trusses – 1”.1. _ is a framed structure composed of members. a) Purlin b) Gussets c) Ridge tops d) Truss View Answer Answer: d Explanation: A truss is defined as a framed structure composed of members connected to each other at their ends and forming triangles which lie in the same plane.2.

  1. Trusses are subjected to _ stress.
  2. A) Compressive b) Tensile c) Direct d) Lateral View Answer Answer: c Explanation: Trusses are the members which are subjected to direct stress, as the truss is usually loaded at the point of intersection of its member only.3.
  3. Trusses are adopted for _ span.
  4. A) Medium b) Short c) Very large d) Large View Answer Answer: c Explanation: Trusses are useful at the places of high rainfall to avoid roof drainage problems.

For very large span the use of beams will make the construction most uneconomical.4. The top line of roof truss is called as _ a) Eves b) Main tie c) Pitch d) Ridge line View Answer Answer: d Explanation: The top line of the roof truss is called “ridge line”.

The bottom edge of roof surface is called a ridge line. Corrugated galvanised iron (GI) or asbestos cement (AC) sheets are commonly used for roof covering.5. If the members connected don’t lie in the same plane, then structures are called _ a) Space truss b) Plane truss c) Main truss d) Foot truss View Answer Answer: a Explanation: If all the members connected at the ends do not lie in the same plane then the structure (truss) is called as space truss.

If the members lie in the same plane, then the structure is called plane truss.6. King post trusses are used for spans _ a) 5 to 8 m b) 6 to 9 m c) 4 to 6 m d) 6 to 8 m View Answer Answer: b Explanation: Generally trusses are used when the span is large and intermediate supports for purlins and ties are unavailable.

A king post truss is used for spans of 6 to 9 m.7. _ shape of the frame offers great rigidity. a) Trapezoidal b) Triangular c) Rectangular d) Square View Answer Answer: b Explanation: The framework of the truss should be built in a way that, it does not change its shape when loaded. The triangular shape of frame offers great rigidity and hence it is generally adopted.8.

Which of the following roof are used on small sheds and veranda opening? a) Couple roof b) Collar roof c) Pent roof d) Purlin roof View Answer Answer: c Explanation: Pent roof is one of the simplest forms of pitched roofs. The sort of sloping roof consists of common rafters which are generally inclined at 30°.

  • It is suitable for span up to 2.5 m.
  • It is widely used on small sheds and veranda openings.9.
  • The joints in king post are of _ a) Butt b) Welded c) Mortice and tenon d) Lap View Answer Answer: c Explanation: The joint between the principal rafter and the king post is made by making tenon in the principal rafter and a corresponding mortice into the head of the king post.
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The joint is further strengthened by an iron stirrup.10. About _ % volume of concrete is occupied by aggregates. a) 60% b) 50% c) 75% d) 30% View Answer Answer: c Explanation: Around 75% volume of concrete is occupied by aggregates. Hence the structural behaviour of concrete is significantly influenced by the type of aggregates used.

Type of cement Usage
Rapid hardening cement Road works and repairs
Hydrophobic cement Swimming pools and food processing plants
High Alumina cement Marine structures

12. IS: 455 is associated with _ a) Portland slag cement b) Ordinary Portland cement c) High alumina cement d) Super sulphated cement View Answer Answer: a Explanation: IS: 455 is associated with Portland slag cement.

Type of cement IS Code
Portland slag cement IS 455
Ordinary Portland cement IS 269
High alumina cement IS 6452

13. Which of the following is used as retarding admixture? a) Calcium chloride b) Fluosilicates c) Treitanlamine d) Starch View Answer Answer: d Explanation: Retarding admixtures are added to slow down the rate of setting of cement. They are useful in hot weather concreting.

Type of admixture Materials
Accelerating Calcium chloride, fluosilicates
Water reducing Lignosulphonate,polyhydroxyl
Retarding Sugar, hydroxyl-carboxylic acid

15. Plasticizing admixture means _ a) Accelerating admixtures b) Water reducing admixtures c) Air in training admixtures d) Superplasticizers View Answer Answer: b Explanation: In water reducing admixtures, the addition of plasticizer allows greater workability for given water cement ratio or alternatively retains workability while reducing the water content.

Get Free Certificate of Merit in Strength of Materials Participate in Strength of Materials Certification Contest Become a Top Ranker in Strength of Materials Take Strength of Materials Tests Chapterwise Practice Tests: Chapter 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 Chapterwise Mock Tests: Chapter 1, 2, 3, 4, 5, 6, 7, 8, 9, 10

How do I know if a truss is load-bearing?

As a structural engineer, I seem to be the go-to guy among my friends and family when someone wants to know if a wall in their home is load-bearing or not. When I get that phone call I often think to myself “Do they even know what a load-bearing wall is?”. Some of the reasons someone would ask this question in the first place would be one of a few things. One reason would be curiosity. If you are like me, you may have that curiosity gene that just wants to learn about how things work and are constructed.

  1. The main reason would be that they are doing a renovation at their home or business that requires a wall to be removed or modified to have new door/window openings as they are worried that the structure will collapse.
  2. Nowadays it is becoming more trendy to have an open floor concept.
  3. That means that people want to get rid of their ugly walls that don’t do much for their space.

A load-bearing wall is any wall that holds up the weight of the structure above and the people/furniture supported by that structure. The floors above, roof structure, people and furniture are the ” loads ” that the wall has to support. A load-bearing wall transfers load all the way down to the building’s foundation,

  1. In a multi-storey building, load-bearing walls usually line up with each other from floor to floor, but this is not always the case.
  2. In a house, for example, the floor plans from floor to floor are often not consistent, so where there is a bearing wall on an upper floor there may be an open space on the floor below.

You may be asking, “But where does the load go if the wall just disappears?”. Well, I can tell you that load doesn’t just magically disappear, it needs to be able to make its way down to the building’s foundation somehow. In these cases, a transfer beam or lintel is installed below the bearing wall to carry the load to each side of the opening at the lower floor.

To separate rooms and spaces To provide acoustic separation and prevent sound travel To prevent fire from spreading from one space to another To provide aesthetics to a space To provide shelter To enclose conduits and plumbing To provide security (can’t we all just get along?!)

So now that you know what a load-bearing wall is, it’s time for some tips on how to determine if a wall is load-bearing or if it is just a partition wall that can be moved or altered with so major structural implications. It is not always easy to determine if a wall is load-bearing without having access to the ceiling or attic space to visually inspect the framing. If you are able to see the floor framing or roof framing, you fir st want to locate the floor joists or roof trusses. If the wall in question is parallel to the joists/trusses, it will likely not be load-bearing. An example of a non-load bearing partition wall can be seen on the left.

  1. When joists/trusses are perpendicular to the wall and bear o n the top of the wall, that wall is bearing wall.
  2. An example of a load bearing wall call be seen on the right.
  3. Joists are rarely continuous over the top of a wall, instead, they are often spliced over the top of the wall as dimensional lumber only available in specific lengths.

For an idea of the standard lengths of dimensional lumber click here, If you don’t have access, it is safe to say that all exterior walls are load-bearing. Exterior walls resist wind loads as well as roof and floor loads. If there is an interior wall that is continuous and in line with a wall above or below, there is a better chance that it is a bearing wall compared to section of short walls that jog in and out. Floor joists that frame into an exterior wall will need to be supported at the opposite end by a bearing wall or beam. The joist span depends on the wood species/grade, applied load and joist depth/spacing but a good rule of thumb would be that a joist will span between 10 and 20 feet (3 and 6 m).

  1. So if a wall is a distance away from an exterior wall that is within this range then there is a better chance that it is bearing compared to a wall that is only a few feet away from the exterior wall.
  2. Roof trusses can span much longer distances than joists, so if you have a gable roof the re is a good chance that it can span between exterior walls and not require an interior bearing wall for support.
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This means that at the top floor of a house, the interior walls may not be supporting the weight of the roof structure and the weight of snow. For an idea of the standard spans for roof trusses given the snow load, truss member pitch, size and spacing, click here,

How much weight can roof trusses support?

Check out this heavy-duty garage storage system. – This is the time of year when I bring outdoor stuff indoors and garage storage space gets scarce. My favorite storage solution is to shove more and more stuff “up in the rafters.” And that got me thinking how much weight can my roof trusses take? Here’s the official answer: Unless you have ” storage trusses ” specifically engineered for extra weight, you shouldn’t store anything in them.

They’re designed to support your roof, not your junk. But if you ask engineers what they do in their own garages, you’ll get a different answer. The horizontal bottom chords of most garage trusses are designed to carry the weight of drywall and insulation, So if your ceiling is unfinished, you have some excess carrying capacity up there: 5 lbs.

per sq. ft. is a safe estimate. That means you could lay a 2 x 4-ft. scrap of plywood over the chords and set about 40 lbs. of stuff on it. Make sure items are spaced so that the weight is evenly distributed over the chords. This goes for manufactured roof trusses –the kind assembled with metal “gussets.” If you have traditional site-built roof framing, your storage capacity depends on the design of the framing.

What keeps trusses from falling?

How to Stop Roof Trusses From Moving When setting roof trusses, the first step is staging the individual trusses on the walls. Next, the end truss is attached and each of the successive trusses is attached at corresponding marks on each wall, known as layout marks.

Use a 4-foot level against the outer face of the end truss to align the truss vertically. Brace the truss with a diagonal brace cut from 2-by-4-inch framing lumber using a circular saw. The brace is installed between the outer peak of the truss and the ground. If necessary, drive a stake into the ground and nail it to the lower end of the brace. Mark layout points for each of the trusses on a piece of 1-by-4-inch framing lumber that will be used as the gauging rod. The layout points are spaced the same distance as the trusses and layout marks on the walls. Make the layout marks with a marking crayon. Stand a stepladder on the floor, halfway between a side wall and the peaks of the trusses. Position the gauging rod perpendicular across the top cords of the trusses and align the marks so they match with the trusses. Nail the rod to the top cord of each truss with an 8-penny framing nail into each truss. Move the ladder as you go. Reposition the ladder under the opposite side of the trusses. Install a length of 1-by-4-inch framing lumber across the top cords, or rafter sections, of the trusses as a brace. Drive an 8-penny nail through the brace and into each cord. Move the ladder as you go. The trusses are now stabilized and ready for roof sheathing.

: How to Stop Roof Trusses From Moving

Why do roof trusses fail?

Risk of Catastrophic Roof Truss Failure Planning SA (Department of Planning and Local Government) have provided advice of potential for catastrophic roof truss failure in buildings constructed between 1970 and 1997, resulting from delamination of nailplates on pre-fabricated roof trusses.

  • Council has been made aware that a problem has been identified with nail plated timber trusses manufactured between the above dates, and may particularly concern large open spans and where heavy roof loads are carried i.e.
  • Solar hot water services or tiled roofs.
  • The Problem Between 1970 and 1997 a number of prefabricated roof trusses were constructed using nail plates which have since proven faulty.

The risk is that the nail plate, or steel connectors, used a particular form of nail which can work its way loose over time. Trusses using these faulty nail plates can potentially separate from the timber at the truss joints, and depending on the load they are bearing lead to failure of the roof structure.

Buildings constructed in the range 1970 – 1997, andRoof framing consists of prefabricated timber trusses, andClear span buildings over large open spaces – particularly such as community halls, libraries, churches, clubs / restaurants / hotel dining rooms, andThe covering is roof tiles.

Check List Council advises all owners of dwellings constructed during this time frame to re-inspect their roof framing to verify that the nail plates are in place and not drawing away form the timber. An explanatory leaflet and a Pre-fabricated Roof Truss Check list is available from, : Risk of Catastrophic Roof Truss Failure

What trusses are the strongest?

Design Factors – There is no “strongest” truss, but rather, one that is most appropriate for a specific application. There are four basic types of truss design: dropped chord, raised chord, parallel chord and scissors. Dropped chord uses a beam on two load-bearing walls and can restrict interior space.

Can a truss span 30 feet?

Q : Tim, is it possible to build a multistory home with no, or few, interior bearing walls or beams? I’ve looked at lumber span tables, and regular lumber doesn’t seem to be able to do what I want to be done. What are my options, and have you ever solved this problem before? — Stewart F., Portland, Maine A : You can build a multistory home with no bearing walls.

It’s been done for decades. Amazingly, it’s done using regular 2-by-4s to solve the problem! No, that’s not a typo! Let’s first discuss the span tables that Stewart mentioned. A span table is a chart that shows how far a certain floor joist can span and not bend too much, depending on several factors.

The wood species, the grade of the lumber and the height or size of the floor joist are the primary factors taken into consideration when creating the tables. It’s important to realize that different species of lumber have different strength characteristics.

  1. When I was building every day, Douglas fir was one of the strongest types of lumber you could buy.
  2. Southern Yellow Pine was also very strong.
  3. Hemlock, on the other hand, was somewhat weak.
  4. Decades ago, I used floor trusses made with ordinary 2-by-4s to create the floor of a large room addition for a client.

He refused to have any interior load-bearing walls or beams and wanted a floor that was as solid as concrete with no bounce in it. Magic floor trusses solve problems such as these and offer much more to architects, builders and homeowners. A floor truss is made in a factory where common roof trusses are made.

  • Advanced computer technology designs the exact size and shape of the truss to meet whatever specifications you require.
  • The end result is a wood floor truss that looks much like large steel bridges that span rivers and canyons.
  • I’m sure you’ve seen hundreds of these where the horizontal top and bottom members of the bridge are connected by numerous other pieces of steel that look like a bunch of connected letter Ws one after another along the side of the bridge.

This design can be done with steel, 2-by-4s and even toothpicks for class science projects! Plumbing, heating and cooling and electrical contractors love working with floor trusses. They have virtually unlimited places to run pipes, ducts and cables, and allow never having to drill one hole.

The center of each floor truss almost always has a wide-open chase for a heating or cooling contractor to install his primary supply ducting down the center of the entire floor from one end to the other. A floor truss can be designed to span 30 or more feet with ease. The truss manufacturer can build them so strong that there’s no bounce to the floor at all.

This comes in handy if you desire a tile floor. Tile and grout can crack if installed over wood floors that are springy and bouncy. Two or three carpenters can easily move around these giant floor trusses. You don’t need to have a large crane on a job site to set them.

  1. Each truss is an identical copy of the one next to it, so the finished floor is flat and smooth with no humps or dips in it.
  2. These imperfections are quite common with normal dimensional lumber floor joists.
  3. You can discover lots more about floor trusses, as well as the closest lumberyard near you that can order them for you.
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Visit: go.askthebuilder.com/bestwaytoframe, Since each job is different, these epic building materials are not a stock item you can just go pick up. This is why you’ve probably never ever seen them before. I guarantee you’ll be spellbound when you discover all that floor trusses make possible.

  • Q : Tim, I hope you can help me.
  • A recent bathroom remodeling job turned into a larger project resulting in a large patch of wall plaster that’s got to be replaced.
  • My contractor’s drywall people have never done plaster repair.
  • How would you fix a 3 foot-by-3 foot hole in the wall if it were your home? I’m tempted to try to do the plaster repair myself.

Do you think this is folly? — Ann W., Montrose, Calif. A : Situations like this had to be part of the inspiration for the children’s book “The Little Engine That Could.” My nickname at home is Dream Crusher, because I often inject reality into family discussions.

  • More often than not in DIY situations, however, I take the opposite tack.
  • I say, “Get a simple plastering trowel out and get to work!” Yes, you can achieve professional results with the right attitude and some guidance.
  • You’re blessed to be living in an age where technology permits the easy sharing of knowledge.

Quite a few professionals have invested vast amounts of time and resources to create excellent step-by-step videos of how to do thousands of projects. I’ve been doing it for nearly 20 years and have more than 650 DIY videos on my AsktheBuilder YouTube channel.

Irk Giordano is another example. He’s a professional plasterer who lives and works in the Bay Area. He’s created hundreds and hundreds of videos sharing his hard-earned knowledge about plaster and stucco installation. Kirk is a great teacher and has several videos that show you exactly how to make a plaster repair such as this.

What if I told you that you could have the repair completed start to finish in less than two hours? The plaster you need is probably in a bag at a local plaster distributor not too far from your home. Or you can buy it online and have it delivered to your home.

The special plaster trowel you need with the curved corners is also affordable and readily available. You’ll be blown away when you see how easy it is to apply the fresh plaster and trowel it so it’s smooth. If you completely botch the job, then just chop it out and try again. But I’m convinced that after watching Kirk’s videos, you’ll get it right the first time! Need an answer? All of Tim’s past columns are archived free at AsktheBuilder.com,

Which roof truss design is the strongest?

You can also watch hundreds of videos, download Quick Start Guides and more.

Which is better wood or steel trusses?

Steel Trusses vs. Timber Trusses: Why Steel Trusses are a No Brainer We made the decision to stock steel trusses for our post frame building kits after carefully looking at the comparison between steel and timber trusses. Some people are hesitant to use steel trusses because they aren’t familiar with them, or they’re scared of the price point.

  1. Here are a few reasons why steel trusses are a far better option for post frame when compared to timber trusses. #1.
  2. Fewer Trusses = Less Labor Steel trusses can be spaced up to ten feet apart.
  3. Compare that to the standard spacing of 24″ for timber trusses.
  4. This is why the price point of steel trusses should not scare you.

Yes, steel trusses definitely cost more than timber per truss, but you typically need five times as many timber trusses as you do steel trusses to complete a post frame project. Additionally, steel trusses are engineered to seat flush on top of the post column, meaning no notching of the post column is necessary.

Steel trusses are stiff and do not flex like timber trusses do which make them much easier to handle and install when dealing with longer length trusses. #2. Steel Trusses Are More Durable Wooden trusses simply do not last as long as steel trusses. Because wooden trusses are made from timber they are susceptible to fire, mold, insect infestation, moisture damage, and rot.

Wooden trusses are also far more likely to be damaged in severe weather. Timber trusses are manufactured from several pieces of wood that are connected using notched inserts and gusset plates. Steel truss are engineered using robotic welds ensuring a highly durable connection.

  • Steel trusses are also fire resistant and do not need chemical treatments to maintain the frame, are not susceptible to insect infestation, mold, rot, or moisture damage, even if left completely exposed to the elements.
  • I mean come on, it’s steel. #3.
  • Steel Trusses are Reusable and Recyclable Steel is an environmentally responsible building material because it is highly recyclable.

Steel trusses are also easily uninstalled and can be reused on other projects. #4. Steel Trusses Offer Wider Clear-span Options There is no doubt that steel trusses give you more design options. As you span greater distances using timber trusses, the truss will begin to flex more and will require a significant amount of bracing.

Is Warren or Pratt truss better?

Conclusion: My conclusion is that the Pratt truss held more weight then the Warren truss because the Pratt design has more trusses. This makes it better able to withstand additional stress.

Is the Howe truss the strongest?

In this experiment we have tested which type of truss bridge is the strongest, yet uses the least amount of material. Two of the most used truss bridges are of the Pratt and Howe design. Through our experiment it was found that the bridge design that minimized the maximum compression force was the Howe Bridge.

What are the 3 types of trusses?

Types of trusses – There are three basic versions of truss structure.

A simple truss has a singular triangular structure and is most often used in the construction of roofs.

A planar truss is two-dimensional. This type of truss exists when all members and nodes are in a planar surface.

A space frame truss is three dimensional. An example of this is an electrical or telecom tower.

Within these three basic types are different varieties of truss that have been developed over the years. Pratt Truss The Pratt Truss was. It consists of vertical members that are in compression and diagonal members that are in tension. This design is efficient as it enables less steel to be used in the diagonal members. This also makes the truss easier to construct. This type of truss is most commonly used for horizontal spans with force that is mostly vertical.

It’s most beneficial for the construction of simple structures where cost-effectiveness is paramount. The truss does not work as well when loads are not vertical. Warren Truss The is one of the most common designs of truss in use today. Its exact history is not known but James Warren first patented the design in 1848.

The design of this truss consists of equilateral triangles. This enables the load to be spread evenly across a structure. However, the structure is not as good at distributing weight under a point load so is best used when a spanned load is present.