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|National Technical Standard
NTE. E30 Earthquake Resistant Design (2003)
National Building Code Technical Standard of Building
E.030 Earthquake-Resistant Design
(PDF File English Version)
|Issued by||Ministry of Housing, Construction and Sanitation|
|The horizontal force or total shear force at the base due to
earthquake shall be calculated by the following formula:
(see Fig. 1)
Structure type "D" is exonerated of seismic force analysis, but they should provide adequate resistance and stiffness for lateral actions.
(1) At least the 80% of the base shear acts on the columns that fulfilled with the requirements of the Reinforced Concrete Code NTE E.060. In case it has structural walls, these should be designed to resist a fraction of the total seismic force in accordance with its stiffness.
(2) The seismic forces are resisted by a combination of structural walls and frames. Frames must be designed to take at least 25% of the shear force at the base. Structural walls will be designed for the forces obtained in the analysis indicated in item 4.1.2
(3) System where the seismic resistance is hold by structural walls which support at least the 80% of the base shear.
(4) Low height story edification with high density of limited ductility walls.
(5) For allowable stresses design the R values must be 6.
(*) These coefficients will apply only to structures where the vertical and horizontal elements allow energy dissipation maintaining the stability of the structure. It doesn’t apply to invert pendulum type structures.
(**) For irregular structures, the values for R should be taken as ¾ of those indicated in the table. For ground structures refer to the Adobe Code NTE E.080. These types of constructions are not recommended in soils S3 nor are permitted in soils S4.
The weight "P" must be calculated adding the dead and permanent load of the building to a percentage of the live load which can be determined as follows: