Detail Seismic Vulnerability Assessment and Retrofitting Design of Existing Office Building

BACKGROUND

TUKI is located at the centre of Sindhupalchowk. The office building is one of the most important infrastructure of the northern part of central development region of Nepal. It is imperative that they remain structurally sound and fully operational at time of earthquake. They must be ready to save lives and continue providing official service to community especially at the times of disasters and emergencies.

An expert engineer team from MORPHOGENESIS CONSULTANT (P) LTD. Kathmandu visited the office site in order to make seismic vulnerability assessment of the existing buildings.

Hence, this report presents the seismic vulnerability assessment of the existing office building of Sindhupalchowk, with proper consideration of the earthquake resistant design criteria following the NBC 105-1994, NBC 206-2000, IS 1893:2002, and other required design codes.

The objective of this report is to check the building whether they are technically fit for operating as office building or not according to Nepal National Building Codes & other required codes. For the purpose of Seismic evaluation of office building, the structural analysis tool SAP 2000 vs 15.0.0 were used. To evaluate the strength of concrete, number & size of longitudinal reinforcement bars in column, beam & slab the non-destructive tests i.e. Rebound hammer & Rebar test were done. Seismic evaluation and strengthening of the building can be done in accordance with the Indian Standard.

OBJECTIVE

The main objective of this structural report is to check existing building, whether they could be considered earthquake safer building for Office or not. Detail Evaluation of the existing building is done and Retrofitting design is to be carried out if it is found vulnerable to earthquake force.

SCOPE OF THE WORKS

The scope of the works for detail seismic vulnerability assessment is as follows:

Site visit in order to conduct a survey to determine the structural characteristics of the existing building.
Modeling of the existing building using the data for the Office Building.
Structural analysis of the modeled building.
Reinforced concrete design of the structural elements considering SAP results.
Compare the obtained & existing design of structural elements of the office building.
Recommend whether buildings are earthquake safer or not for the Office uses.
Retrofit design the members of building if found unsafe.

EVALUATION PROCESS

This existing building is checked whether it is designed in accordance with the principles and philosophies and requirements of current seismic standards. The evaluation procedure has followed as the steps suggested by the IS-15988, as given below.

Preliminary evaluation: This involves broad assessment of its physical condition, robustness, structural integrity and strength of structure, including simple calculations. If the results of this evaluation for strength, overall stability and integrity are acceptable, no further action is required.
Detailed evaluation: It includes numerical checks on stability and integrity of the whole structure as well as the strength of each member. Conventional design calculations for these checks shall use modified demands and strengths.

Details

Title	Detail Seismic Vulnerability Assessment and Retrofitting Design of Existing Office Building
Pages	22
Language	English
Format	DOCX
Size	7 MB
Download Method	Direct Download
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