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  Peru [ Back to Seismic Design Code Index ]  [ Back to Country Index ] 

Code Name  National Technical Standard NTE. E30 Earthquake Resistant Design (2003)

 National Building Code Technical Standard of BuildingE.030 Earthquake-Resistant Design(PDF File English Version)

Issued by   Ministry of Housing, Construction and SanitationRevision

  The horizontal force or total shear force at the base due toearthquake shall be calculated by the following formula:(see Fig. 1)

where: Z  = zoning coefficient according to Table 1U  = factor of importance and use given in Table 1 S  = soil factor given in Table 2C  = seismic coefficient according to Table 3 R = reduction coefficient given in Table 4 P  = weight of the structure according to Table5

 

Table 1Zoning Coefficient (Z)

It depends of the seismic zone where the building is located.

Factor " Z "

Factor of Importance and Use(U).- It depends on the buildingcategory.

Factor "U "

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Structure type " D" is exonerated of seismic force analysis, butthey should provide adequate resistance and stiffness for lateralactions.

Table 2Soil Factor (S)

This factor consider the amplification of the earthquake effect,according to the characteristics of the sub-soil. It must beconsidered a depth of 1/2 of the shorter dimension of the

 building's base depending on its bearing capacity. The S  values

are refered to the behavior of the structure over hard layer.

Factor"S"   T p(S)

Soil I 1.0 0.4

Soil II 1.2 0.6

Soil III 1.4 0.9

Table 3Seismic Coefficient (C)t shall be calculated by the response acceleration spectra,generalized in the following formula:

where:T  = fundamental period of the structureT  p = predominant period of the soil

 

Table 4 Reduction Factor (R)

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TABLE 4

STRUCTURAL SYSTEMS

Structural System

Reduction Coefficient R,

For regular structures(*) (**)

Steel Frames.  Steel Frames with resistantmoment jointsOther steel frames.  Eccentric bracing systems.  Cross bracing systems

9.5

6.56.0

Reinforced Concrete Frames.

Frames(1)

Dual(2)

Structural walls(3)

Limited ductility walls(4)

  8(1)

  7(1)

  6(1)

  4(1)

Reinforced or Confined

Masonry(5)   3

Wood Constructions

(allowable stress)   7

(1) At least the 80% of the base shear acts on the columns thatfulfilled with the requirements of the Reinforced ConcreteCode NTE E.060. In case it has structural walls, these should

 be designed to resist a fraction of the total seismic force inaccordance with its stiffness.

(2) The seismic forces are resisted by a combination of structuralwalls and frames. Frames must be designed to take at least25% of the shear force at the base. Structural walls will bedesigned for the forces obtained in the analysis indicated initem 4.1.2

(3) System where the seismic resistance is hold by structuralwalls which support at least the 80% of the base shear.

(4) Low height story edification with high density of limited

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