Safety stan­dards set low for Delhi build­ings

TALL BUILD­INGS CODES AROUND THE WORLD NDMA has pro­posed the set­ting up of a tall build­ing coun­cil for the Cap­i­tal

HT Estates - - FRONT PAGE - Ja­pan: Van­dana Ram­nani

The Chi­nese code is called JGJ 3-2010 Tech­ni­cal Spec­i­fi­ca­tion for Con­crete Struc­tures of Tall Build­ing. This is con­sid­ered the best code in the world by ex­perts

Tall Build­ings Ini­tia­tive: Guide­lines for per­for­mance­based seis­mic de­sign of tall build­ings; Los An­ge­les Tall Build­ings Struc­tural De­sign Coun­cil: An al­ter­na­tive pro­ce­dure for seis­mic anal­y­sis and de­sign of tall build­ings lo­cated in the Los An­ge­les re­gion; Rec­om­men­da­tions for the seis­mic de­sign of high-rise build­ings by the Coun­cil of Tall Build­ings and Ur­ban Habi­tat (CTBUH)

The doc­u­ment usu­ally re­ferred to as the Ja­panese Code is the Build­ing Stan­dard Law, in­clud­ing its en­force­ment or­der, which con­tains re­quire­ments en­abling im­ple­men­ta­tion of the Build­ing Stan­dard Law

The high­light of Delhi’s Mas­ter Plan 2021 is ver­ti­cal growth to ac­com­mo­date the Cap­i­tal’s grow­ing pop­u­la­tion. De­spite that, a for­mal code for tall build­ings does not ex­ist in the coun­try, and most build­ings are de­signed at ‘col­lapse preven­tion level’ – which is a min­i­mum per­for­mance stan­dard.

The Na­tional Dis­as­ter M a n a g e m e n t Au t h o r i t y (NDMA) has, how­ever, come up with a pro­posal to set up a Delhi tall build­ing coun­cil (DTBC) on the lines of the Mum­bai’s Tall Build­ing Com­mit­tee.

The pro­posal was sent to the Delhi gov­ern­ment for its ap­proval in 2011. The idea be­hind the doc­u­ment will be to en­sure that Delhi is pre­pared to meet the chal­lenges re­lated to tall struc­tures and use it as a tool for bet­ter man­age­ment of tall build­ings much be­fore such projects come up on the ground, says an NDMA source.

The role of the tall build­ing coun­cil, as pro­posed in the doc­u­ment, will be to guide the city as it tran­sits from low-rise/ medium height struc­tures to safer tall build­ings. As more tall build­ings come up in the city, a higher level of tech­ni­cal knowl­edge and strin­gent re­quire­ments that may not be laid down in the mu­nic­i­pal by­laws will be re­quired, the pro­posal says.

The draft pro­poses that ev­ery agency that wishes to con­struct a tall build­ing on the land that falls un­der the Delhi gov­ern­ment, will be re­quired to present a tech­ni­cal dossier to the pro­posed tall build­ing coun­cil of the gov­ern­ment of Delhi.

Po­ten­tial mem­bers of the DTBC could in­clude se­nior struc­tural engi­neers with wind and earth­quake de­sign ex­pe­ri­ence, se­nior ar­chi­tects with ar­chi­tec­tural de­sign and fa­cade de­sign ex­pe­ri­ence, se­nior fire engi­neers, se­nior geo­physi­cists, green build­ing engi­neers.

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