Based on the modifications made with: The New Building Regulation (N.4067/2012 – as amended and currently in force) The New Building Code of 2023 (Y.A. 66006/2360 – FEK.3985/B/22.06.2023) The Circular for mezzanines, attics, and roofs DAOKA/135179/4495/20-12-2022 “Approval of coverage diagram according to the specifications of article 157 of n.4951/2022” Includes: •    Plans – Photos •    Examples •    Frequently asked questions from colleagues •    Necessary specifications for people with disabilities •    Specifications for elevators •    Calculation of height and width for steps •    Balconies and closed mezzanines •    Roof loads and much more In more detail, the book includes: Stairs •    Types of stairs •    Morphological types of stairs •    Functional elements of a staircase •    Instructions and rules for heights and steps •    Type of safety and comfort •    Usual step heights for various uses •    Recommended dimensions of step height and width, to ensure their comfortable and safe use •    Calculation and methods of staircase layout •    Steps towards implementing the study and specifications of height, steps •    Step layout •    Staircase plan •    Calculation of ascent length •    Loads with which the stairs are calculated based on the loading regulation •    Elevators •    Provisions applicable to all elevators •    Specifically for hydraulic elevators, the following deviations apply •    Provisions applicable for the accessibility of people with disabilities •    Instructions for dimensioning elevator cabins •    Minimum dimensions of elevator shaft •    Regulations for the construction of machine rooms •    General instructions for elevators for people with disabilities •    Dimensioning of cabins for people with special needs (people with disabilities) •    Frequently asked questions – Colleague inquiries on N.O.K. issues concerning stairs and elevators Mezzanines & Attics •    Definitions of the terms mezzanine, attic, and roof, roof height •    Internal balcony •    Closed internal balcony (closed mezzanine) •    Technical instruction booklet for internal balconies •    Attic – Article 2 – par.8 •    Clarification for attics •    Article 11 N.O.K. par. 6id, not counted in the F.A.R. •    Circular D.O.K.K. 20894, 6/7/2017 •    N.O.K. Article 23, additions •    Limitation on the height of the loft •    Arrangement of the loft with Law 4178/13 •    Questions – Colleagues' inquiries Roofs •    Definitions •    Roof height •    Roof slope – specifications •    Sloped roof wooden or metal •    Sloped slab of reinforced concrete •    Roof loads •    Roof construction what you need to know •    Form of the roof •    Types of roofs depending on the number of sloped levels •    What are the basic elements in roof construction •    Basic methods of roof construction depending on the construction materials