ABNT NBR 15575 DOWNLOAD

Figure 8 Final aspect of the exposed face of sample A2. How to cite this article. In this way, this article has the aim to evaluate the fire resistance and acoustic sound insulation, among Brazilian standard NBR ABNT, , of two non-structural systems composed by different ceramic bricks composition, in weight and geometry, both with horizontal voids, commonly used in the country construction market. The flowchart of Figure 3 depicts the procedure undertaken. According to Tutikian and Helene [ 10 ], the durability of concrete structures depends on extrinsic factors such as the presence of salts, sea sprays, acid rain, and intrinsic factors, among which are the cement type, water-cement ratio, additions and admixtures. Into the fire resistance of the systems that compose a building, the main objective is to promote a secure way to the users to get out of the building in case of a sinister. The criteria and parameters adopted for the 12 structural designs developed are presented as follows.

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It abbnt be verified that this paper did not take into account the fire safety requirements of reinforced concrete structures, as these are requirements that do not vary with the required Service Life, which could alter the results of the objectives established for this work.

Experimental analysis, Fire Safety Journal.

Some geometric characteristics of the system, like voids, spaces and internal dimensions, have a strong influence on the fire resistance of the wall, due to the interference on abmt predominant heat transfer between the vertical divisions inside the blocks NGUYEN et al, The temperatures of each sample during the fire resistance test are shown on Fig.

Due to their slenderness and the type of stress borne, the slabs were sensitive to load changes. Also, the standard classifies the performance of the buildings in three different classes, minimum, intermediate and superior, among the security, habitability and durability areas.

Table 1 Tested samples. Introduction The national methodologies of evaluation and classification of the performance in residential buildings systems in Brazil are prescribed by NBR ABNT,that is the first abny standard that concern the performance as an obligatory requirement.

When analyzed alone, zbnt consumption grew as the EEC and SL increased because the weight of slabs and beams and the imposed loads grew as well. Building acoustics, 6 3pp.

Nbr 15575-1 pdf

The increased reinforcement cover thickness, which is required to increase the performance level of the piece, did not provoke the remodeling of its geometry except for EEC IV. The flowchart of Figure 3 depicts the procedure undertaken.

Paulo Eduardo Mezzomo da Silva pmezzomos unisinos. Into the habitability, one of the concerns is 51575 acoustic performance, because of the characteristics and the possible hazard caused by the sound. The impact the performance level has on the amount materials of design of reinforced concrete structures was based on the concrete volume analysis and the total consumption of steel from reinforcements.

ABNT NBR / - EDIFICAÇÕES HABITACIONAIS - DESEMPENHO by Leandro Conceição on Prezi Next

For the main reinforcements, type CA steel was used, whereas the stirrups were made of type CA steel. This comes from the fact that, although the acting loads grew along with the increases of the performance level sought due to the need to increase SL, the compressive strength of concrete was increased to meet the durability requirements.

How to cite this article. The determination of the sound reduction index of the samples were made into a laboratorial environment, testing both the aforementioned systems, that were constructed inside a movable reinforced concrete portico and installed between two reverberant rooms Fig.

Nbr pdf download

As both had the same measured sound reduction wbnt 47 abjtthey 15557 the same performance classification. In this way, this article has the aim to evaluate the fire resistance and acoustic sound insulation, among Brazilian standard NBR ABNT,of two non-structural systems composed by different ceramic bricks composition, in weight and geometry, both with horizontal voids, commonly used in the country construction market.

The dimensions of the piece were increased on the base of their cross-section without changing their stiffness for tensile stresses, as in the increase of usable height. For reinforced concrete structures, the SL that the system must achieve is related to the performance level sought, which is presented in the performance standard [ 1 ]. For EEC I, the increases of steel and concrete consumption necessary to reach the superior level were 0.

Measurement procedures and requirements.

The study focused on the total nr of steel and concrete. March 16, ; Accepted: As they have the same measured result, they have the same performance classification on the standards. In total, 8 floors are leveled and one is the ground floor.

Projeto de estruturas de concreto-Procedimento. Acoustics - Laboratory measurement of sound insulation of building elements - Part 4: Considering the security requirements, it is necessary to evaluate the fire resistance of vertical sealing systems. Presuming that the building does not change, it was assumed that the weight of the structure itself does not change over time.

Within the scope of habitability, the ahnt specifies that these systems must have an adequate acoustic performance. Building Acoustics, 23 2pp.