Approach

It has been noted that present approach to Reinforced Concrete construction design in developing countries has a conservative amount of steel and concrete being utilized. Therefore, a structural design attempt was made here by utilizing a combination of ‘reinforced concrete design’ and ‘value engineering’ techniques so as to achieve a more efficient design.

Tasks

1. Generate a 3-D global computer model (using software such as STAAD-Pro) of the B+G+10 Reinforced Concrete Structure for frame analysis.                                                                                

2. Explore costs impacts based on analysis and design parameters, and related reasons, at each floor level for the structure.                                                                                                                                                              

3. Look into miscellaneous structural elements which may have significant impact on costs. 

Lessons

1. The 3-D Staad-Pro Global Analysis shows:

• The cost of slab can be seen as a significantly high component (58%) compared to columns(26%) and beams(16%) combined

• Reinforcement costs are significantly higher (69%) than concrete-works(19%) and formwork(11%) combined

About the Structure

The building is a typical Ground plus Ten storied Residential building structure to be built in Ahmedabad city. The structure consists of a basement raft plus fourteen (14) slabs which includes ground floor and terrace slabs. The structure consists of three blocks (A, B and C) . Each block has outside dimensions 28.13m in length x 19.18m in width, height = 48.035m. Blocks A and B are symmetrical in plan in both directions and are connected throughout the height of the structure. Block C is symmetrical in one direction in plan only. All blocks are connected by basement raft and its roof slab.