A study on the history of imposed loads in building codes in Sweden
Chojnicka, Paulina LU ; Björnsson, Ivar LU ; Iannacone, Leandro LU
and Ivanov, Oskar Larsson
LU
(2025)
IABSE Symposium Tokyo 2025: Environmentally Friendly Technologies and Structures: Focusing on Sustainable Approaches
In IABSE Symposium Tokyo 2025: Environmentally Friendly Technologies and Structures: Focusing on Sustainable Approaches - Report
p.1052-1060
- Abstract
A necessary foundation for realizing circularity in the building sector is a good understanding of our existing building stock. This includes the design approaches and building codes used at the time of construction. The provisions in building codes have evolved from a heuristically adjusted permissible stress method to a semi-probabilistic safety format using partial safety factors. In addition, the focus has historically been on developing resistance models based on measurements and tests, whereas load models have received comparatively less attention. This study explores the Swedish codes from 1947 to the present day. Design methods are compared, accounting for differences in imposed loading provisions and developments in material... (More)
A necessary foundation for realizing circularity in the building sector is a good understanding of our existing building stock. This includes the design approaches and building codes used at the time of construction. The provisions in building codes have evolved from a heuristically adjusted permissible stress method to a semi-probabilistic safety format using partial safety factors. In addition, the focus has historically been on developing resistance models based on measurements and tests, whereas load models have received comparatively less attention. This study explores the Swedish codes from 1947 to the present day. Design methods are compared, accounting for differences in imposed loading provisions and developments in material specifications over time. The evolution of structural safety, in terms of reliability indices, is then estimated based on simple examples. The results indicate that the reliability indices have decreased over time in the case of simple beams.
(Less)
- author
- Chojnicka, Paulina
LU
; Björnsson, Ivar
LU
; Iannacone, Leandro
LU
and Ivanov, Oskar Larsson
LU
- organization
- publishing date
- 2025-05-18
- type
- Chapter in Book/Report/Conference proceeding
- publication status
- published
- subject
- keywords
- building codes, imposed load, Reliability
- host publication
- IABSE Symposium Tokyo 2025 : Environmentally Friendly Technologies and Structures: Focusing on Sustainable Approaches - Report - Environmentally Friendly Technologies and Structures: Focusing on Sustainable Approaches - Report
- series title
- IABSE Symposium Tokyo 2025: Environmentally Friendly Technologies and Structures: Focusing on Sustainable Approaches - Report
- pages
- 9 pages
- publisher
- International Association for Bridge and Structural Engineering
- conference name
- IABSE Symposium Tokyo 2025: Environmentally Friendly Technologies and Structures: Focusing on Sustainable Approaches
- conference location
- Tokyo, Japan
- conference dates
- 2025-05-18 - 2025-05-21
- external identifiers
-
- scopus:105008750862
- ISBN
- 9783857482069
- DOI
- 10.2749/tokyo.2025.1052
- language
- English
- LU publication?
- yes
- additional info
- Publisher Copyright: © 2025 IABSE Symposium Tokyo 2025: Environmentally Friendly Technologies and Structures: Focusing on Sustainable Approaches - Report All rights reserved.
- id
- 1b8be5fb-e31a-4b85-9a9f-7cd2baeaddad
- date added to LUP
- 2025-11-28 15:46:08
- date last changed
- 2025-12-01 12:50:40
@inproceedings{1b8be5fb-e31a-4b85-9a9f-7cd2baeaddad,
abstract = {{<p>A necessary foundation for realizing circularity in the building sector is a good understanding of our existing building stock. This includes the design approaches and building codes used at the time of construction. The provisions in building codes have evolved from a heuristically adjusted permissible stress method to a semi-probabilistic safety format using partial safety factors. In addition, the focus has historically been on developing resistance models based on measurements and tests, whereas load models have received comparatively less attention. This study explores the Swedish codes from 1947 to the present day. Design methods are compared, accounting for differences in imposed loading provisions and developments in material specifications over time. The evolution of structural safety, in terms of reliability indices, is then estimated based on simple examples. The results indicate that the reliability indices have decreased over time in the case of simple beams.</p>}},
author = {{Chojnicka, Paulina and Björnsson, Ivar and Iannacone, Leandro and Ivanov, Oskar Larsson}},
booktitle = {{IABSE Symposium Tokyo 2025 : Environmentally Friendly Technologies and Structures: Focusing on Sustainable Approaches - Report}},
isbn = {{9783857482069}},
keywords = {{building codes; imposed load; Reliability}},
language = {{eng}},
month = {{05}},
pages = {{1052--1060}},
publisher = {{International Association for Bridge and Structural Engineering}},
series = {{IABSE Symposium Tokyo 2025: Environmentally Friendly Technologies and Structures: Focusing on Sustainable Approaches - Report}},
title = {{A study on the history of imposed loads in building codes in Sweden}},
url = {{http://dx.doi.org/10.2749/tokyo.2025.1052}},
doi = {{10.2749/tokyo.2025.1052}},
year = {{2025}},
}