BS EN 1996-3:2006 pdf download – Eurocode 6 — Design of masonry structures — Part 3: Simplified calculation methods for unreinforced masonry structures
1.1 Scope Part 3 of Eurocode 6
(1)P The scope of Eurocode 6 for Masonry Structures as given in 1.1.1 of EN 1996-1-1:2005 applies also to this EN 1996-3.
NOTE: Eurocode 6 deals only with the requirements for resistance, serviceability and durability of structures. Other requirements are not considered. Eurocode 6 does not cover the special requirements of seismic design.
(2)P EN 1996-3 provides simplified calculation methods to facilitate the design of the following unreinforced masonry walls, subject to certain conditions of application:
walls subjected to vertical loading and wind loading;
walls subjected to concentrated loads;
basement walls subjected to lateral earth pressure and vertical loads;
walls subjected to lateral loads but not subjected to vertical loads.
(3)P The rules given in EN 1996-3 are consistent with those given in EN 1996-1-1, but are more conservative in respect of the conditions and limitations of their use.
(4) For those types of masonry structure or parts of structures not covered by (1), the design shall be based on EN 1996-1-1.
(5) This EN 1996-3 applies only to those masonry structures, or parts thereof, that are described in EN 1996-1-1 and EN 1996-2.
(6) The simplified calculation methods given in this EN 1996-3 do not cover the design for accidental situations.
1.2 Normative references
(1)P The references in 1.2 of EN 1996-1-1:2005 apply to this EN 1996-3.
(1)P The assumptions given in 1.3 of EN 1990:2002 apply to this EN 1996-3.
1.4 Distinction between Principles and Application Rules
(1)P The rules of 1.4 of EN 1990:2002 apply to this EN 1996-3.
(1) The terms and definitions given in 1.5 of EN 1990:2002 apply to this EN 1996-3.
(2) The terms and definitions in 1.5 of EN 1996-1-1:2005 apply to this EN 1996-3.
(3) Additional terms and definitions used in this EN 1996-2 are given the meanings contained in clause 1.5.2.
a retaining wall constructed partly or fully below ground level.
(1)P Material-independent symbols are given in 1.6 of EN 1990.
(2)P For the purpose of this standard the symbols given in EN 1996-1-1 apply.
2 Basis of design
2.1 General (1)P The design of masonry buildings shall be in accordance with the general rules given in EN 1990. (2)P Specific provisions for masonry structures are given in section 2 of EN 1996-1-1:2005 and shall be applied.
2.2 Basic variables (1) P Actions shall be obtained from the relevant parts of EN 1991. (2)P Partial factors for load shall be obtained from EN 1990. (3)P Properties for materials and construction products and geometrical data to be used for design shall be those specified in EN 1996-1-1, or other relevant hENs of ETAs, unless otherwise indicated in this EN 1996-3.
2.3 Verification by the partial factor method
(1)P The verification by the partial factor method shall be done according to clause 2.4 of EN 1996-1-1:2005.
NOTE: The notes to 2.4.2 of EN 1996-1-1:2005 also apply.
(2)P The relevant values of the partial factor for materials γ M shall be used for the ultimate limit state for ordinary situations.
NOTE: The numerical values to be ascribed to the symbol γ M may be found in the National Annex. Recommended values are those as given in clause 2.4.3 of EN 1996-1-1:2005. The recommended values for masonry are repeated in the table below.
(1)P The materials used in the masonry walls referred to in this EN 1996-3 shall be in accordance with Section 3 of EN 1996-1-1:2005.
(2) Masonry units should be grouped as Group 1, Group 2, Group 3 or Group 4 according to clause 3.1.1 of EN 1996-1-1:2005.
NOTE: Normally the manufacturer will state the grouping of his units in his product declaration.
3.2 Characteristic compressive strength of masonry
(1) The characteristic compressive strength of masonry should be determined according to 3.6.1 of EN 1996-1-1:2005.