Construction and form
The need to assemble a built form piece by piece (or one pour of wet concrete after another) means, on the contrary, that an assurance that it will be stable and strong enough when finished is not a sufficient guarantee of adequate stability and strength at intermediate stages of construction. To avoid the risk of a collapse during construction it may be necessary to accept some limitations on the choice of the final form. Clearly these limitations will be related to the sequence of construction envisaged. This sequence will also affect the manner in which the loads are finally distributed through the structure, so that it may be necessary to take it into account also when considering the behaviour of the finished structure.