SP RK EN 1991-1-3:2004/2011 PDF

Full title and description

SP RK EN 1991-1-3:2004/2011 — Actions on structures. Part 1-3. General actions. Snow loads. Kazakhstan adoption (state regulation) of Eurocode 1 Part 1-3, incorporating corrections and national application provisions for use in structural design and snow-load determination in the Republic of Kazakhstan.

Abstract

This document sets out principles, definitions and calculation procedures for determining characteristic and design snow loads on roofs and on the ground for buildings and civil engineering works. It covers ground snow maps, conversion to roof actions, shape and distribution coefficients, local effects (drift, accumulation at obstructions), exceptional snow situations, thermal and exposure factors, and rules for applying national parameters (Nationally Determined Parameters / National Annex). The standard is intended to be used together with its National Annex and related Kazakh technical rules.

General information

• Status: Active / adopted national regulation (state standard used in Kazakhstan for snow-load rules).
• Publication date: Designation shows 2004/2011 (national adoption/versioning reflecting the EN reference and local adoption). The National Annex and implementation documents were published subsequently (national annex introduced 2017).
• Publisher: Adopted and published as a Kazakhstan state construction regulation under the Ministry / Committee responsible for construction and technical regulation (Ministry of Industry and Infrastructure Development / Committee on Construction and Housing and Communal Affairs in Kazakhstan).
• ICS / categories: Structural actions and loads — ICS codes used for Eurocode 1 family (e.g. 91.010.30; 91.080.01 as applied to EN 1991 series).
• Edition / version: SP RK EN 1991-1-3:2004/2011 (Kazakh adoption of EN 1991-1-3 with national modifications); related National Annex published (NA to SP RK EN 1991-1-3:2003/2017).
• Number of pages: Typical published copy (official state/regulatory PDF editions marketed by document distributors) is approximately 51 pages for the main text; the separate National Annex is typically ~31 pages.

Scope

Specifies methods to determine characteristic ground and roof snow loads to be used in structural design for buildings and civil engineering works on sites (typically up to the altitude limits given in the standard). It provides classification of actions, design situations (normal and exceptional), procedures for converting ground snow loads to imposed loads on different roof geometries, coefficients for shape, exposure and thermal effects, and guidance for local effects such as drifting and accumulation at projections and obstructions. The standard is applied together with the Kazakhstan National Annex and other national technical rules.

Key topics and requirements

• Definition and classification of snow actions and design situations (normal vs exceptional).
• Characteristic ground snow load mapping and methods to derive local ground snow values.
• Conversion rules from ground snow to roof snow loads, including shape and roof geometry coefficients.
• Local effects: drifting, accumulation at parapets, projections and obstructions; partial snow covers.
• Exposure (Ce) and thermal (Ct) factors and their influence on roof snow values.
• Rules for exceptional snow loads and combinations with other actions for ultimate/serviceability limit states.
• Requirement to apply Nationally Determined Parameters (NDP) via the National Annex and accompanying Kazakh technical documents.

Typical use and users

Used by structural and civil engineers, roof designers, geotechnical engineers, designers of industrial and public buildings, building control authorities, and software developers who implement snow-load generators for Kazakhstan projects. It is used during load specification, structural analysis and design checks to ensure roofs and structural systems are designed for appropriate snow actions and combinations. Engineering consultancies and regulatory bodies apply it together with the National Annex and related Kazakh technical regulations.

Related standards

Part of the Eurocode-related package and Kazakhstan state construction regulations. Related documents include: EN 1991 (Eurocode 1) series (basic reference), SP RK EN 1991-1-4 (wind actions), SP RK EN 1990 (basis of structural design), the Kazakhstan National Annex (NA to SP RK EN 1991-1-3:2003/2017), and Kazakhstan technical rules (e.g. NTP RK / implementation rules such as NTP RK 01-01-3.1). These documents are applied together where referenced.

Keywords

SP RK EN 1991-1-3, Eurocode 1, snow loads, snow actions, roof snow, ground snow, Kazakhstan National Annex, NDP, shape coefficients, exposure factor, thermal factor, drifting, structural design.

FAQ

Q: What is this standard?

A: SP RK EN 1991-1-3:2004/2011 is the Republic of Kazakhstan’s adopted/regulatory edition of Eurocode 1 Part 1-3 — the code that gives rules and calculation procedures for snow loads on structures. It is intended for use in Kazakhstan together with its National Annex.

Q: What does it cover?

A: It covers determination of characteristic ground snow loads, conversion to roof loads for different geometries, shape/exposure/thermal coefficients, local effects (drift, accumulation), exceptional snow situations, and guidance on combinations for design limit states. The National Annex provides Kazakhstan-specific parameters.

Q: Who typically uses it?

A: Structural and roof designers, building engineers, authorities approving design documentation, and software vendors implementing snow-load generation for Kazakhstan projects. It is used in building design, load specification and structural checks.

Q: Is it current or superseded?

A: The SP RK designation indicates the national adoption/version (2004/2011). There are subsequent related national documents (for example a National Annex published in 2017 and implementation/technical rule documents) that must be applied together with SP RK EN 1991-1-3; users should check the latest national regulatory texts and National Annex for amendments or newer editions before design.

Q: Is it part of a series?

A: Yes — it is Part 1-3 of the EN 1991 (Eurocode 1) family (Actions on structures). The Eurocode family covers multiple parts (EN 1990 to EN 1999) addressing bases of design, actions, and material-specific rules; national adoptions (SP RK EN series) form the Kazakhstan package.

Q: What are the key keywords?

A: Snow loads, ground snow, roof snow, Eurocode 1, SP RK, National Annex, shape coefficient, exposure factor, thermal factor, drifting, Kazakhstan.