During the framework construction, soldier-builders invented a new method of form assembly and developed a concrete hardening accelerator to prevent corrosion of steel bars.

The Ministry of Public Security brigade involved in the housing construction project, too, invented and introduced labor-and material-saving construction methods.

Officials and builders of the Pyongyang Construction Commission introduced the method of building prefabricated parts ensuring the seismic resistance in cooperation with relevant sectors, thus raising the speed of construction while saving a lot of manpower, steel bars and timber.

The Ryongsan construction brigade enhanced the quality of structures while saving a considerable amount of steel bars through technical innovation.