It's of the utmost importance to use high-quality concrete formwork. It helps you ensure that you end up with the necessarily concrete final product, and good formwork also helps you prevent formwork fails. The use of formwork that's not appropriate for a particular job or formwork that simply isn't in good condition can put your workers at risk. It can also lead to issues that are costly and time-consuming to address. It's much better to use the right formwork and end up with the results you want than to risk using the wrong formwork and end up with results that require you to re-do the work.
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You may be wondering, though, how to determine if concrete formwork is high-quality enough for your project. This may especially be the case if you're looking to buy used formwork or rent used formwork. Buying or renting used forms can save you a sizable amount of money and help lower your overall project costs. Since engineered forms (steel and aluminum formwork) can be used over and over again without any problems, buying used is often a smart decision with relatively few risks. It's important, though, to pay attention to certain things when assessing the condition of forms before you buy.
Below are some recommendations to help you decide formwork meets your quality standards:
The formwork should be able to adequately support both dead and live loads associated with your specific project. To maintain safety and quality concrete construction, the formwork has to be strong enough for the job.
It should be able to maintain its shape with the use of props and braces.
Its joints should be leak-proof and in good condition.
The formwork should not be distorted, damaged, or warped in any areas. It should not be rusted or corroded to the point that its capabilities would be affected.
Assuming the formwork is temporary rather than permanent, it should be easy to remove and not cause any damage to concrete during removal.
The formwork should be intended for multiple uses, which may not be the case with certain types of timber formwork, for instance.
All concrete residue from previous use should be removed.
If you are able to obtain information about how the formwork has been maintained, it can be helpful to know that a release agent was applied to it immediately after its last use. Additionally, you may want to inquire about where and how formwork has been stored while not in use. It's best if it's been stored in a covered, dry area.
You should also take the kind of concrete you're going to be using and the pouring temperature of that concrete into consideration when figuring out if particular formwork is ideal for your particular project. In addition to investing in quality formwork, you should be sure to invest in high quality falsework to accompany it. The time you invest into getting the right formwork and materials for your concrete construction project will be well worth it once you achieve the desired finish product!
Eiffel Trading's used equipment and material inventory is ever-changing. Our used equipment offerings included used concrete formwork, used sectional barges, used foundation equipment (including vibratory hammers!) and much more. Furthermore, our material inventory ranges from used traffic barrier, to used hdpe pipe, and everything in between.
All of our listings are constantly being updated, but if you don't see what you're looking for, create a wanted listing.
Ready to sell your used heavy equipment or construction material? List your products today on Eiffel Trading's online marketplace.
Do you have to buy or rent props for your construction site, but you don't know which type of prop is the best and most optimal?
It is true that there are many types of props, and some important aspects must be taken into account when assessing the product.
Let's see them!
1.- What are props?
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Props are auxiliary elements that support a horizontal formwork system and position it at the required height in each case.
As load-bearing elements, they are responsible for transmitting to the ground the loads they receive when the structure is concreted, and act as support until it is put into service, once it has reached the necessary strength to absorb the necessary stresses.
They are height-adjustable and telescopic. They are generally comprised of two hollow cylindrical bodies which facilitate regulation, one inside the other (body and shaft). In some cases, as a complement, they may have a locking system to prevent the shaft from separating from the body, as well as an unloading system to facilitate removal and disassembly.
2.- What type of props are there?
There are many types of props, depending on to the material they are made of, the load they can support, and their service life. They are also classified by whether the adjustment thread is visible or covered.
Steel props
Metal props are the most commonly used, and can be painted, galvanized, zinc plated, etc' They are classified according to their load capacity (between 500 and kg) and their working height (generally covering a span height between 2 and 6 meters). Steel allows the determination of a well-defined load capacity and has a long service life, being a resistant material (controlling the oxidation of the material).
They are compatible with recoverable formwork systems for both building and civil works, facilitating the construction of all types of solid slabs or lightened slabs, both unidirectional and bidirectional (waffle slabs with lost or recoverable cassette), within their load and height range. They are also commonly used as shoring elements in building rehabilitation.
Aluminum props
Aluminum props are of more restricted use due to their high price, they are lighter than steel props, and have a shorter service life, because aluminum is more 'delicate' to on site treatment. They can have a higher load capacity and allow working at greater heights.
Although they can be used as a stand-alone prop, they are generally mounted 'tied' together, forming load-bearing towers with bracing frames. It is also common to join them in height.
They are used with formwork systems for singular buildings and/or for civil works, when there is a higher load and height range than steel props.
Wooden props
Wooden props are the most 'archaic' in construction, and were used before the advent of steel props. They are still used in some parts of the world, especially in less developed areas or where wood is very cheap. In general, they have less load-bearing capacity than steel props, a short service life and, according to legal regulations, their use is not allowed in most parts of the world.
3.- What factors should be taken into account to choose the most suitable one?
You have to shore a slab, with a certain weight, an acting load, at a certain height: What factors should be considered when choosing the most suitable type of prop for a given application?
There are 5 factors to consider so as to determine the most optimal prop:
Choosing the right prop seems easy, but as you have seen, a very important analysis must be carried out beforehand. In any case, if you have any doubts, contact your trusted supplier for advice!
Este artículo se sumerge en la definición, importancia, y los diferentes tipos de entibaciones, incluidas las innovadoras entibaciones deslizantes.
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