All plans and specifications for construction, except agricultural sheds and barns, the monetary worth of which is one hundred thousand dollars or more, must be prepared by and the construction administration and construction observation services supervised by architects or engineers registered in this state. The architect or engineer is legally responsible for designing the building in accordance with the provisions of this chapter of adequate strength so as to resist fire, and constructing the building in a workmanlike manner, according to the plans and specifications as approved. School district projects are subject to the approval requirements of section 15.1-36-01 and projects involving institutions of higher education under the control of the state board of higher education are subject to the approval requirements of chapter 15-10.