The elements of the structural skeleton are produced in parallel and can be immediately assembled in the skeleton. Four workers using a telescopic crane can produce 100m2 of built space per day. The completion work in each floor could start immediately after the assembly of the particular floor's skeleton, while at the same time the assembly of the remaining floors' skeleton continues. This becomes possible, as the structural elements assembly constitutes the final form of the δομικό σκελετό, without any additional work or adjustment needed. At the same time the installation of the electromechanical  network could take place within the channels of the already constructed part of the structural skeleton. At the same time also the construction of walls, openings and floors could start.

    The rapid creation of a protected workplace, due to the structural skeleton, makes possible for the workers to perform the work of completion unaffected by the weather conditions. This further accelerates the construction process.

    Generally, the construction program according to the ERTEK system is parallel (i.e. prescribes performance of different construction processes at the same time) as opposed to the serial character of the construction program according to the conventional methods. This results in time saving up to 70% as compared to the latter methods. The speed of the construction process offers also a very important economic benefit, as affects the operating capital (loans, interests etc).

    Both the time and the cost schedule of a building project is illustrated by an example case study of the ERTEK system. The general case of project scheduling, depending on both the project's specifications and the resources available, is given by a spreadsheet which is free to download.