An allowable cost is a cost that can be paid by your contract or grant. UCSD considers a cost to be allowable when it meets the following tests: 1  The cost is reasonable; it reflects what a prudent person might pay.
Why wasnât it built? The design proved too expensive and complex to realize in Tatlinâs day, and he only managed to complete a few wooden scale models. However, thereâs some evidence that a group called Tatlinâs Tower and the World is planning to build a full-scale version of the monument. Unfortunately, they only plan to build it in separate sections, which will be housed in different venues.
Soon the Egyptians decided to fill in the steps of the pyramid. The first really pointed pyramids were built at Giza. Khufu's Great Pyramid (shown here) was the tallest building on earth for almost five thousand years, until the Eiffel Tower was built in 1889.