Better to purchase

Then comes the queue of purchases of all materials necessary for the construction, which also have their own characteristics. If the construction is carried out in a short time, it is advisable to purchase everything one or two times to save on delivery. Otherwise, it is better to purchase only those materials that will be required for specific work. At this stage, it may also be necessary to rent a crane of a manipulator of 5 tons, which will accelerate unloading.