• Shashwat Mehta
• Dr M. V. Shah

The increased value of land has augmented the use of material stacking by various methods in the Industrial world. This material storage is done by pallet racking systems which generates point loads or by block stacking (storage of material over one another) creating huge distributed loads. Grade slab subjected to these loads normally gets cracked because of poor prediction of support provided by sub-base. This study aims to analyze the sub-base characteristics and improvement of the same by providing geogrid within it to control the settlement induced by these loads. In this specific investigation, numerical modelling (FEM) of concrete grade slab, square in shape (12.3m x 12.3m) having a thickness of 150mm on sub-base of compacted sand underlain by stratified soil profile with top layer of soft soil (clayey type) is done using PLAXIS3d. To investigate the impact, a parametric study of each factor is considered by forming different cases for variant sub-base stiffness (E), sub-base thickness (t), tensile stiffness of geogrid (EA), and also a varied depth of geogrid (d); for different loading condition i.e., block-stacking and static rack loading with the moving loads of material handling equipment (MHE). The economic viability of geogrid reinforced subbase for particular soil and loading condition is also swotted. Overall scenario concludes that the competence of geogrid reinforced subbase in reduction of the differential settlement of industrial grade-slab is greatly influenced by subbase stiffness and thickness. By the use of numerical analysis, behaviour and effectiveness of geogrid reinforced subbase for grade slab subjected to different loading conditions are easily understood.

Geogrid, Subbase, Industrial Racking, Numerical Modelling, PLAXIS

"Analysis of Geogrid Reinforced Sub-Base Under Grade Slab for Different Material Stacking Condition by Numerical Modelling ", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.8, Issue 7, page no.a166-a172, July-2021, Available :http://www.jetir.org/papers/JETIR2107024.pdf

"Analysis of Geogrid Reinforced Sub-Base Under Grade Slab for Different Material Stacking Condition by Numerical Modelling ", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.8, Issue 7, page no. ppa166-a172, July-2021, Available at : http://www.jetir.org/papers/JETIR2107024.pdf