No abstract

No abstract

PurposeTimely removal of formwork is one of the crucial aspects of construction management that directly influences the safety and quality of the structure as well as the economy of the project. Code recommendations in this regard are not widely practiced because of the difficulties in their implementations. Also, such code recommendations are not robust for all the possible construction conditions. The present paper proposes an IoT-enabled system that notifies the minimum striking time of vertical formwork based on a specified target compressive strength.Design/methodology/approachAn IoT device is proposed for the timely removal of vertical formwork by monitoring of early age concrete compressive strength in real-time. The maturity method is utilized for this purpose. The implementation of the proposed system is demonstrated on three concrete columns. The proposed system is found to be suitable for any construction condition.FindingsThe proposed system is a novel, cost-effective, IoT-enabled real-time monitoring system which includes features like cloud connectivity and remote monitoring. This system can be easily implemented at the site without any human intervention.Practical implicationsThe study explores the development of an IoT device for the timely removal of vertical formwork which will ensure quality, safety and productivity in concrete construction.Originality/valueThis paper is the first attempt to determine the minimum striking time of vertical formwork using IoT-based technology.

No abstract

High rise buildings are rapidly increasing in India, and the reason is the unavailability of land. The latest developments in the construction industry improved the utility of available space in productive ways. Perhaps the most recent pattern in the development field is Open Ground Story (OGS) encircled structures, where the ground story is kept open without infill dividers mostly because of points of interest on parking facilities. The ground storey of these buildings are considered as soft and weak, making it most vulnerable to earthquakes, and incorrect structural designing of these buildings will result in catastrophic failure. It is found that the addition of steel bracings significantly improves the seismic performance of OGS buildings in recent years. The motivation of the present study is to focus on the OGS framed buildings with and without steel bracings. In this work, a combination of conservative lateral load resisting systems such as X-bracings and multiplication factor is employed along with moment resisting frame to develop a hybrid system thus by improving the seismic performance of OGS structures.