STR 2.02.02:2004 Public Purpose Buildings – Lithuanian Building Technical Regulation
The STR 2.02.02:2004 is a Building Technical Regulation (statybos techninis reglamentas) issued by the Ministry of Environment of the Republic of Lithuania. This document establishes the essential technical requirements for the design, construction, reconstruction, and repair of public purpose buildings and related engineering structures. The regulation is a mandatory legal instrument within the framework of the Law on Construction of the Republic of Lithuania. This current version is the consolidated edition valid from February 25, 2022, incorporating all amendments regarding modern infrastructure, including high-speed electronic communications and mobile signal accessibility in elevators.
The regulatory scope encompasses a wide array of building categories, including Hotels, Administrative buildings, Trade and Service facilities, Catering, Transport, Culture, Science and Education, Healthcare, and Religious buildings. It provides specific metrics for structural elements such as ceiling heights, technical floors, and corridor widths, while defining the mandatory inclusion of specialized spaces like baby feeding rooms and high-speed communication infrastructure. The regulation also references a complex network of hygiene norms (higienos normos) and other technical standards governing fire safety, noise protection, and energy efficiency.
The following sections detail the core technical requirements and safety standards mandated for all participants in the construction process, from municipal planners to structural engineers.
Scope and Building Classifications
The regulation applies to the design and construction of new public buildings, as well as the reconstruction and repair of existing structures when installing public-use premises. Buildings are classified into several functional groups as listed in Annex 1:
- Hotel purpose: Hotels, motels, guest houses.
- Administrative purpose: State and municipal institutions, banks, post offices, and court buildings.
- Trade and service: Shops, pharmacies, salons, and repair workshops.
- Educational and scientific: Schools, institutes, laboratories, and kindergartens.
- Healthcare: Hospitals, clinics, and rehabilitation centers.
- Cultural and Religious: Theaters, museums, libraries, churches, and houses of worship.
General Technical Requirements
Structural dimensions are strictly regulated to ensure safety and functionality. Paragraph 8 defines standard height thresholds from floor to ceiling:
- Standard height: Must be at least 3.0 meters for most public rooms.
- Health and spa facilities: Saunas and water procedure rooms must be at least 3.3 meters high.
- Auxiliary premises: Corridors and technical rooms may have a minimum height of 2.1 meters.
- Technical floors: Must be at least 1.6 meters high, or 1.9 meters for paths intended for maintenance personnel.
- Technical floor width: Maintenance paths must be at least 1.2 meters wide.
Accessibility and Special Facilities
Public buildings must be adapted for people with disabilities according to STR 2.03.01:2001. Additionally, specialized premises are required based on building type and size:
- Baby feeding rooms: Mandatory in shopping centers over 2000 m², large administrative buildings, and transport hubs (airports, railway stations).
- Sanitary facilities: Separate toilets for men and women are required on every floor, regardless of the number of users. At least one accessible toilet must be present on each floor.
- Staircase steps: A single flight of stairs must have between 3 and 16 steps (up to 18 on the first floor).
- Ramps: The maximum longitudinal slope for human movement is 1:12 (8.3%), while healthcare facilities require 1:20.
Safety and Security Requirements
The regulation includes dedicated sections for the prevention of violence, vandalism, and theft. Design solutions must address the following:
- Visibility: Building entrances must not be hidden by greenery or annexes and must be visible from the street.
- Lighting: Entrance areas must be automatically illuminated during operating hours.
- Access control: Roof exits, technical floors, and basements must be lockable or monitored.
- Glazing: Skylights and roof windows must only be openable from the inside.
- Balconies: If located lower than 3 meters from the ground, they must be equipped with specialized security measures.
Frequently Asked Questions
What is the minimum ceiling height for public buildings in Lithuania?
The standard minimum height from floor to ceiling is 3.0 meters, though auxiliary rooms and corridors may be reduced to 2.1 meters.
When are elevators mandatory in public buildings?
At least two elevators are required in healthcare or hotel buildings with 2 or more floors, and in other public buildings with 3 or more floors or more than 100 visitors per day.
What are the requirements for toilets in public buildings?
Separate toilets for men and women must be installed on every floor, with at least one toilet adapted for people with disabilities.
Can public premises be installed in basements?
Yes, Annex 2 lists permitted uses for basements, including saunas, gyms, technical rooms, warehouses, and shops (up to 400 m² for food stores).
Are baby feeding rooms required in all public buildings?
They are required in specific buildings such as shopping centers, administrative buildings, and theaters if the floor area exceeds 2000 m².
What is the maximum slope allowed for ramps?
The maximum slope for general public use is 1:12 (8.3%), but it is restricted to 1:20 for stationary healthcare facilities.
How is the number of toilet cabins determined?
General norms require at least one toilet for every 18 men and one for every 12 women, though specific hygiene norms may apply.
Are smoking rooms permitted inside public buildings?
Yes, but they must be isolated from other premises, have mechanical ventilation, and be at least 6 m² in size.
