Taj Mahal - The architect of the Taj Mahal aimed at giving maximum strength and stability to the tomb and worked out the minute details with utmost precision : the weight of the entire structure is uniformly distributed, extraordinarily massive piers and vaults were constructed to support this heavy load., the very best quality of bonding material helped combat the disrupted tensile stress etc. However, in spite of all these precautions and care, dangerous cracks and leakages developed in the substructure just four years after its completion. Aurangzeb in his letter to Shah Jehan in 1652 mentions these cracks. Some defects were discovered about the same time in the dome. Though thorough repairs were undertaken, the nature of the cracks was not discovered. The cracks were again noticed to have developed to dangerous proportions in 1810. As a result an Advisory Committee on the restoration and conservation of the monument was set up and a survey with reference to the damage was undertaken.