1. INTRODUCTION:
CLIENT - M/S. N ROSE DEVELOPERS PVT. LTD.
ARCHITECT - K ARCH ARCHITECTS
STRUCTURAL CONSULTANT - SACPL
2. PROJECT DETAILS:
- Ground+3Basement+9 Podium Floors+5 Future Provision floors
52 typical floors+2 service floors+1 E- Deck floor
- 225m Height
- 17,63,382 Sq.ft. area
- Location: Northern Heights, Bharucha Road, Dahisar East, Mumbai, Maharashtra, 400068. (Latitude 19024’ N and Longitude 72086’ E).
![](https://static.wixstatic.com/media/865611_9a5a5a0bced24a9ab107324774d0941b~mv2.png/v1/fill/w_56,h_48,al_c,q_85,usm_0.66_1.00_0.01,blur_2,enc_auto/865611_9a5a5a0bced24a9ab107324774d0941b~mv2.png)
Fig.- Location
3. WIND TUNNEL TEST
• Used to predict the wind loads and responses of a structure
• Done by RWDI Consulting Engineers (India) Pvt. Ltd, Trivandrum
• 1 : 400 scale model
• 2.4m x 1.8m wind tunnel
• Model surrounding details around 460 m radius
• 50 years return period
![](https://static.wixstatic.com/media/865611_c63ba9a6266642eeadfe59e9aa4e9224~mv2.png/v1/fill/w_49,h_33,al_c,q_85,usm_0.66_1.00_0.01,blur_2,enc_auto/865611_c63ba9a6266642eeadfe59e9aa4e9224~mv2.png)
Fig.- Wind tunnel Model
![](https://static.wixstatic.com/media/865611_9fc38dc5377a43168e191e6af19fab01~mv2.jpg/v1/fill/w_147,h_82,al_c,q_80,usm_0.66_1.00_0.01,blur_2,enc_auto/865611_9fc38dc5377a43168e191e6af19fab01~mv2.jpg)
Fig.- Model preparation stage
![](https://static.wixstatic.com/media/865611_e4768649f98f4c62a73586fa05493b74~mv2.png/v1/fill/w_49,h_33,al_c,q_85,usm_0.66_1.00_0.01,blur_2,enc_auto/865611_e4768649f98f4c62a73586fa05493b74~mv2.png)
Fig.-Wind Tunnel Model
![](https://static.wixstatic.com/media/865611_4f761f5c314940d69b99a00c35588b0d~mv2.png/v1/fill/w_117,h_148,al_c,q_85,usm_0.66_1.00_0.01,blur_2,enc_auto/865611_4f761f5c314940d69b99a00c35588b0d~mv2.png)
Fig.- Load sets
4.OBSERVATIONS
70% of the code loads stipulated as a minimum as per IS 16700: 2017
![](https://static.wixstatic.com/media/865611_8a7c74bff9df4f6197eb1af9c905593f~mv2.png/v1/fill/w_57,h_10,al_c,q_85,usm_0.66_1.00_0.01,blur_2,enc_auto/865611_8a7c74bff9df4f6197eb1af9c905593f~mv2.png)
Fig.- Observations
4.REQUIREMENT OF TIE BEAMS
•To control torsional effects
•Provided at alternate 10 floors
![](https://static.wixstatic.com/media/865611_14ae116bdd2f406591d3216d0f1d435d~mv2.jpg/v1/fill/w_144,h_72,al_c,q_80,usm_0.66_1.00_0.01,blur_2,enc_auto/865611_14ae116bdd2f406591d3216d0f1d435d~mv2.jpg)
Fig.- Model with tie beams
![](https://static.wixstatic.com/media/865611_77dd7bbe6fe24e01beb5cc6f011f9b68~mv2.png/v1/fill/w_49,h_19,al_c,q_85,usm_0.66_1.00_0.01,blur_2,enc_auto/865611_77dd7bbe6fe24e01beb5cc6f011f9b68~mv2.png)
Fig.- Wing A & Wing B Typical Floor without ties
5. REQUIREMENT OF SPANDRELS
•To reduce time period
•Provided at every floors at marked locations
![](https://static.wixstatic.com/media/865611_da0a2f57d72e4169b7e53bb80ffbef4b~mv2.jpg/v1/fill/w_145,h_58,al_c,q_80,usm_0.66_1.00_0.01,blur_2,enc_auto/865611_da0a2f57d72e4169b7e53bb80ffbef4b~mv2.jpg)
Fig. - Model with Spandrels
6.FOUNDATION SIZE WORKOUT
•Based on soil data inputs & architectural inputs, initial footing analysis done with 2.5m, 2.75m & 3m footing depth and following conclusion made on the basis of initial analytical observations.
•As per client’s decision 2.75m depth was finalized.
![](https://static.wixstatic.com/media/865611_261598a6d7d14422bee83a7a42792175~mv2.jpg/v1/fill/w_147,h_34,al_c,q_80,usm_0.66_1.00_0.01,blur_2,enc_auto/865611_261598a6d7d14422bee83a7a42792175~mv2.jpg)
Fig. - Raft cost comparison
7. EXCAVATION
•SBC 200 T/m2
•Hard bed rock encountered at lower depth. No shoring was required
•Limited retaining wall size to 350 mm instead of heavy sizes
![](https://static.wixstatic.com/media/865611_873ab345f300477192037ab322d78630~mv2.png/v1/fill/w_117,h_52,al_c,q_85,usm_0.66_1.00_0.01,blur_2,enc_auto/865611_873ab345f300477192037ab322d78630~mv2.png)
Fig. Bore Hole
![](https://static.wixstatic.com/media/865611_2d31de7303274389bda01c24d1cf4a5a~mv2.jpg/v1/fill/w_136,h_109,al_c,q_80,usm_0.66_1.00_0.01,blur_2,enc_auto/865611_2d31de7303274389bda01c24d1cf4a5a~mv2.jpg)
Fig. Excavation
![](https://static.wixstatic.com/media/865611_4dfa650d0e96412591d072a46ef7617c~mv2.png/v1/fill/w_63,h_122,al_c,q_85,usm_0.66_1.00_0.01,blur_2,enc_auto/865611_4dfa650d0e96412591d072a46ef7617c~mv2.png)
Fig.-Excavation section
![](https://static.wixstatic.com/media/865611_f022383b95604cdb86d07ab482bed64d~mv2.jpg/v1/fill/w_79,h_141,al_c,q_80,usm_0.66_1.00_0.01,blur_2,enc_auto/865611_f022383b95604cdb86d07ab482bed64d~mv2.jpg)
Fig. Revit Model