The phase-I network consist of two corridors East-West and North –South where the first corridor covers from Baippanahalli station to Mysore road Terminal (18.10 Km) and the second corridor covers from Nagasandra in North to Puttenahalli in South (24.20 Km).
BMRCL has selected and awarded this project to the country’s best contractors based on their expertise in building of elevated structure, railway station, rail tracking construction, and the underground tunnel construction. The project contractors have chosen and used boom pumps mostly from Putzmeister for faster and convenient placing of concrete.
Overall, in this project for Viaduct (Elevated structure), precast structure has been used for segment, girders, pier cap etc. Each segment requires 20 cum concrete and I-girder required 17 cum. For station building, precast and slab were used; precast was also used for underground tunnel rings and concreting in tunnel has been done by shotcrete. Besides, concrete was required to make plinth construction and track bed construction inside tunnel. In all these applications, high grade concrete: M40, M50, M60 were used.
For instance, L&T’s infra and B&F (Building & Factory) divisions have used Putzmeister Boom Pump Model BSF36.09 for pre-casting and concreting piers & piers caps while working at 5.1 km R-3A Elevated structure and also for placing concrete at 3 level and for different structure during the construction of 3 stations each in R-3A and R-4. All locations of station are highly congested due to traffic and hence placing concrete was a big challenge.
L&T has done almost 1100 segments and 1000 nos. I-Girders by using this machine wherein each segment will have 20 cum concrete and each I-Girder will have 17 cum concrete.
L&T, P&M - Head Mr. Lokesh and Mr. Rajesh are extremely satisfied with the performance of the machine in completing their project as per stipulated time. They have also appreciated the service support extended during concreting even at night.
Besides, CEC is also working on underground tunnel project of 4.9 km and till now has completed almost 3km by using Putzmeister BSF36.09H & BSF32.09H boom pumps for placing concrete at tunnel opening, pathways, sidewall construction etc. The company is also working on 4 underground stations in East-West line using these pumps.
COASTAL PROJECT, another contractor of BMRCL project has also used Putzmeister Pump BSF 36.09H at its project site as the company is working on underground tunnel project of 4.0 km. They are constructing 3 underground stations in North-South line and are using this boom pump for concrete placing in tunnel opening, pathways, sidewall construction etc.