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The masonry. Armed masonry.
Masonry reinforced with built-in steel armor in such a way that both
materials act jointly to resist the efforts. Masonry no Reinforced. Masonry
without confinements or armor, tending to increase its ductibility, but that can
have reinforcing weaponless with armor by other reasons. Construction of several
Floors. The resistant vertical system is specially the buildings here, in
individual with respect to its efficiency to resist the lateral loads of wind or
earthquake, whose importance grows as it increases the height of the building.
The ideal would be that the structural system that are required and that
represent the optimal solution to resist the vertical loads of design, it was
sufficient to also resist also without modification some the lateral loads
counting for it with the reduction in the factors of safety that admit the
design norms to resist this last condition of load. Constructions without
Horizontal Diagram. This type of single construction of does in constructions of
a single level or in I complete floor of a building. Determination of the
resistance of the masonry.
The determination of the compressive strength of the masonry
(f'm) will be carried out by of the following methods: Method: From the
resistance of test prism. The prisms will be elaborated using the same humidity
content of the masonry units, the same mortar consistency, the same thickness of
meetings and the same quality of I suck of work that was used in the definitive
construction. Specimens will not have less than 30 cm of height and will have a
relation height no smaller of nor greater 2 thicknesses of 5. The value of f'm
will be calculated dividing the critical load by compression of the prism
between the net area when it is hollow masonry units and divides between the
gross area when masonry units of or hollow unit is solid where the alveoli with
mortar fill, fluid mortar or concrete that is considered like critical load of
the prism that causes the first fissure of traction in the masonry unit.
The value f'm in addition will be corrected multiplying it by
a coefficient that depends on the height/ thickness relation of the prism
according to the following table. Altura/espesor relation 2,0 2,5 3,0 3,5 4,0
4,5 5.0. Coefficient 0,73 0,80 0,86 0,91 0,95 0,98 1.0. The prisms will be
stored to a no smaller temperature of 18°C during 28 days in the eventuality
that it has to prove the prisms to the 7 days will obtain the value of f'm
multiplying the resistance to the 7 days per 1.1. I number minimum of specimens
to prove itself will be 5 and if the coefficient of variation of the proven
samples exceeds 0,10 the value f'm will be obtained multiplying the average of
all the results by a coefficient: C=1-1.5(V-0.10), in that V is the coefficient
of variation. (Regulation of construction of Peru. |
