We are not far from the time when environments will be smart and intelligent having capability to compute and communicate with other environments and artifacts. These environments and everyday objects will be equipped with small, inexpensive, and low power devices having capability to communicate with each other in order to organize and coordinate their actions. Computation will be freely available everywhere allowing us to perform tasks anywhere at anytime. The individuals will be equipped with lightweight devices instead of heavy devices that condense the effectiveness of individual. Furthermore, there is increasing trend towards anytime, anywhere computing paradigm that allow user to work at home, while traveling or at any location. Due to this increasing trend and availability of hundreds of low constrained devices, it will be possible for individuals to form a mobile ad hoc computational grid by integrating piecemeal devices into a single, unified computing resource that could achieve the desired result. The purpose of study is to propose architecture for mobile ad hoc computational grid for low constraint devices in order to perform high processing tasks.