How To Select Steel For Building Construction? 1. Check Diameter & grade of steel So, first of all, you have to check the diameter of steel and also the grade of steel we have different grades of steel 40,60 and 75,so must be check the diameter and grade of steel before buying.2.
- Check the weight of steel Here is an example to check the weight of steel.
- If we have an 8 mm diameter steel bar and length is 12 meters so find the weight of the steel bar? Formula to calculate the weight of steel bar = D²L/162 So weight of steel = ( 8 x 8 x 12)/162 Weight of steel = 4.74 kg 3.
- Check for rust and loss Coating if you wanna purchase you have to check rust and lose coating,it should not be rust and it should not be loose if there is loose coating in steel don’t you it for building construction.
If we bend steel 180 degrees so the surface of the steel is the top surface of the steel should not be white and it should not be developed any cracks. It’s very important so don’t you this steel.5. Never store steel on the ground sometimes we placed steel on the ground with that steel should rust and rusted steel should not be used in building construction otherwise it will make more problems and rust can we weak strength of the steel remember these points.
How to choose the right steel for your project?
The Best Guide to Selecting the Right Steel Although it was 20 years ago, I remember it like it was yesterday. I was on the phone with the local steel supplier ordering some bar stock. He asked if I wanted it “hot or cold”. I had no idea what he was talking about.
Totally embarrassing! I don’t want the same to happen to you. With a little bit of knowledge on the subject, you can avoid the embarrassing conversation that I had. Steel is definitely the material of choice in our current world. Plastics and composites are on the rise, but steel will remain prevalent because of its availability, cost, malleability, durability, weldability, and machinability.
The biggest drawbacks are its high density and poor corrosion (rust) properties. Steel comes in 4 main types: structural shapes, tubing, plate and bar. Properly selecting steel involves understanding the alloys used, how the material is processed including tempering and forming.
Welded steel with carbon contents above 0.3% need special processing to prevent cracking. To begin with, I highly recommend obtaining a stock list from your local steel supplier. This can be a valuable resource as you gather information regarding available sizes and shapes, weights and grades. It will help you save time in the design process and be an invaluable resource throughout your career.
Minimal familiarization will show that steel comes in:
- Structural shapes
- Tubes and pipe
- Plate or sheet
What are the basics of steel selection?
Conclusion – We have discussed the basics of selecting steel. Steel comes in structural shapes, tubing and pipe, plate or sheet and bar. We’ve discussed the alloy, finish and ductility of the materials. After reading this, you will have a better understanding about the basics of steel selection, so that you will impress your boss by selecting the right material for the job.
What are the different ways of processing steel?
Finish – Bar and Tubing have two unique things to consider, the finish (or condition) and the alloy. The steel finish mainly comes down to whether the steel is hot or cold, Hot-rolled steel if formed at the steel mill is extremely hot and then formed and molded to shape while it’s still hot.
- Hot-rolled steel has very rounded corners, and generally applies to different types of bar stock.
- When cooled off hot-rolled steel will shrink slightly thus giving less control on the size and shape of the finished product when compared to cold rolled.
- Cold-rolled steel is created when hot-rolled steel is processed further by running it through rollers and conforming it to a certain smaller shape.
Cold-rolled steel has sharp edges and very tight-tolerance sides. Because of the cold working, cool-rolled steel will have a higher yield strength than hot-rolled steel, Here’s a quick overview of the differences between hot-rolled and cool-rolled steel:
- Hot-rolled steel
- Pretty soft for steel
- High elongation
- Low yield strength,
- Rounded corners
- Cool-rolled steel
- Higher yield strength,
- Lower ductility,
- Tight tolerances
- Sharp edges
Here’s another way to remember the difference: If you were to drop hot-rolled steel on your foot, your foot would be crushed. If you drop cool-rolled steel on your foot, your foot will most likely be cut off. Another way that steel can be processed is by quenching and tempering (Q&T),
- The quenching and tempering process gives you a very tightly toleranced piece of steel, like cold rolled, but its strength will be increased over cold rolling.
- Its ductility and machinability will go down.
- As a result, many will machine a bar in its cold rolled state and then have the quench and tempering process added.
Here’s how the process of quenching and tempering steel goes:
- A piece of hot-rolled steel is taken and turned into cool-rolled.
- The steel is then heated up so that it can be annealed.
- After that, the steel is quenched in either water or oil (depending on the type of steel and the process for that particular type). This tempers the steel.
- The steel may be heated after that in order to soften it up a bit.
What are the different types of structural shaped steel?
I-Beams – The first type we will be discussing is the S-Beam or otherwise known as Standard American Beams. The S-Beam is also sometimes known as an I-Beam due to their shape which look like a capital I. In general, these are primarily used in the construction industry, but can also be found in truck frames, lifts, and many other similar applications.
S-Beams can be measured by the height (H) and weight per foot (H X wt/ft). For example, S6X12.5 would represent a beam that is 6 inches tall and weighs 12.5 pounds per foot. Another type is called the Wide Flange Beam or W-Beam. These beams have flanges that are nearly parallel to the top and bottom of the shape unlike the traditional S-Beam.
W-Beams are commonly found in many structural applications such as bridges and buildings and have a greater variety of sizes. W-beams are measured by the height (H) and weight per foot (H X wt/ft). With all the variations you will need to determine the width and thickness from a steel stock list.