Types of sections, unidirectional pieces, stacked joists
The joists can be semi-safe or self-safe, the distinction between them being the capacity to help loads prior to being cemented and being incorporated into the chunk. (πατητή τσιμεντοκονία)
The semi-safe ones need lower propping until the section has procured all its obstruction, while the self-safe ones needn't bother with this propping on the grounds that they have adequate bearing limit since their arrangement.
The last option is typically utilized in clean chunks to try not to leave lost swaggers under the piece (it is absurd to expect to get to the sterile to recuperate the swaggers whenever they have been cemented).
For the transmission of burdens to be viable towards the bars, it is vital that there is an association between the joists and the shafts. On certain events this association is addressed by embedding the joists into the bars and on others you can decide to put connectors that join the two elements.
These connectors are straightforward rebars of steel that are put in the "kidneys" of the joists and crash into the joists.
In the accompanying picture you can see those connectors, particularly in the joist that is seen underneath on the left (on the off chance that you have a superior photograph of the utilization of connectors and you need to share it, I will be glad, thanks) Types of chunks, unidirectional sections, bar joist support
The opposition of the section is put together as a rule with respect to the joists, so the space between them is not really pertinent as far as the ability to help loads , so it isn't required that there is a finished mass of cement between the two joists. Assuming this is the case, a lot of that substantial wouldn't work by any means, so it would just be adding its own load to the construction. This is tackled by putting easing up elements upheld between two joists, so that they forestall the piece of the chunk between joists that doesn't work, the lower region, not being made of cement, however of a lot lighter component without primary limit. . These elements are the vaults.
Types of floors, unidirectional floors, vaults
The vaults are generally made of cement, albeit clay material or pore container (the commonplace white stopper with little balls) can likewise be utilized, with which we can additionally ease up the heaviness of the piece. (πατητη τσιμεντοκονια)
Clearly, this multitude of elements, prior to turning out to be important for the generally cemented structure, should be upheld by the created formwork to have the option to be gathered. The formwork can be full planking (the whole surface is a wooden "floor" on which you can stroll to deal with it also gather the chunk) or it very well may be fractional formwork, in which just the region of the pillars are formwork. Where the tops of the joists lay and on these the vaults rest.
These fractional formworks save a lot of formwork wood, yet require working from the lower floor with helper implies until a help surface is shaped, which should likewise be safeguarded to forestall falls between the joists.
Types of chunks, unidirectional, halfway for work.
As I referenced toward the start, it is a genuinely considered normal sort of producing, however it isn't without certain downsides. One of the primary disadvantages of unidirectional joist and vault chunks is that they require an enormous stockpiling region. The joists take up a ton, the vaults as well, the fortifications, the formwork wood, the props... they require arranging the space where this large number of materials will be put away on location .
Likewise, another disadvantage is that they are exceptionally weighty materials, so they require helper means to assume them to their position of arrangement, since it isn't practical for them to be lifted to the relating floor by hand by the administrators. For a period issue, however for security.
Furthermore, can't be cut in situ voluntarily, so on account of complicated calculations in which the pillars this weight affects oneself load of the piece , so the design currently needs a specific protection from hold itself, influencing how much concrete and steel that it will require by estimation.
Another disadvantage is the absence of adaptability with the calculation of building floors . The joists are not equal (same distance between them, same length of the multitude of joists), we would need to arrange joists with different sizes to adjust its length to the math of the chunk. next blog