Behavior and design for component and system of cold-formed steel roof trusses

Reda, Marina; Sharaf, Tarek; Elsabbagh, Ashraf; El-Ghandour, Mohamed

doi:10.1016/j.tws.2018.10.038

Cited by 17 publications

(4 citation statements)

References 8 publications

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“…(2024). Semesta Teknika, 27(1) https://journal.umy.ac.id/index.php/st/issue/view/1064 Light steel roof trusses have been used as roof truss coverings in various countries in the world, to protect the buildings underneath, especially for residential buildings (Reda et al, 2019) and (Almasri et al, 2023) office buildings (Pranoto & Jepriani, 2020), this means that light steel has become an important material that can be used for roof frames as a substitute for other materials such as wood.…”

Section: Introductionmentioning

confidence: 99%

Damage Assessment Method for Light Steel Roof Frames: Case Study of Government Buildings

Maskur,

Wibowo,

Winarno

2024

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The tornado disaster in Ciamis Regency damaged 55 buildings, including the Panawangan District Office. The aim of this research was to identify the condition and level of damage to the Light Steel Roof Frame Structures that were damaged and determine the ranking or percentage of damage. By making direct observations at the location of the incident. The result is that: The roof covering element uses zincalum metal with the batten frame partially damaged on the left side of the building above the hall and the right corner of the front of the building. The battom chord, top chord and web elements are partially detached. The trim element made of GRC material is damaged. came loose, and the Gypsum ceiling elements with hollow frames fell on the outside and inside the hall. The percentage of damage obtained is 14.50% and the damage level ≤ 30% is categorized as Light Damage.

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Section: Introductionmentioning

confidence: 99%

Damage Assessment Method for Light Steel Roof Frames: Case Study of Government Buildings

Maskur,

Wibowo,

Winarno

2024

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“…Moreover, the connection design should follow the realistic assumption for maintaining the equilibrium of the external applied load and internal forces which is stated in British Standard (The British Standard, BS 5950-5: 2005, 2005). Besides that, it is important to analyse the demand to capacity ratio for each member of the truss to ensure high performance of the structural system under the applied load configuration (Reda et al , 2019). From the review of boundary condition, the recommended case for L-angle bracket and flush end plate connection is restraint in translational movement perpendicular to the surface of the bottom edge of the plate.…”

Section: Introductionmentioning

confidence: 99%

Determination of load transfer characteristics to connections between cold-formed steel truss and supporting system

Choong

De’nan²,

Chew³

et al. 2022

WJE

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Purpose Recently, the utilization of cold-formed steel (CFS) roof truss systems and different types of other combination structural support systems, such as concrete or hot-rolled steel support, becomes more frequently used. This paper aims to identify the load transfer characteristics of three different design details for cold-formed truss to supporting system connections and to propose simplified modelling approach for practices. Design/methodology/approach Simplification modelling of connection design could be proposed for practical purpose based on the load transfer characteristics obtained from detailed study using finite element method. A cold-formed roof truss system with connection is modelled using line elements. However, the supporting system is not modelled in this work. Three types of connection involve, which are five pieces of CFS L-angle brackets, one-piece of CFS L-angle brackets and three types of bolts connection are modelled. Findings The results of analysis show that the connections located on the loaded side experienced higher reactions than those far from loaded side. From the result, it is also found that the option of “Fixed But” support condition in STAAD.Pro with translational degree of freedom being restrained is the most suitable way to represent the CFS L-angle brackets design for Type 1 connection for use in truss modelled using line elements. Originality/value Such increase in usage necessitates an appropriate connection detailing depending on the behaviour of the connection.

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“…Roof truss structures are a particularly interesting area of research when it comes to truss optimization, as there is a lot of possibility for practical application. Reda et al [14] investigated the overall behaviour of cold formed steel roof trusses using finite element analysis and to predict the failure location in the truss assembly and its cause. This was done by calculating the demand to capacity ratios using Direct Strength Method (DSM) for each component of the truss.…”

Section: Introductionmentioning

confidence: 99%

Effects of Structural Optimization on Practical Roof Truss Construction

Petrović¹,

Kostić²,

Marjanović³

et al. 2020

Applied Engineering Letters

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In truss structural optimization the most frequently optimized factor of a structure is its weight. The minimization of weight contributes not only to savings in material, but also in other aspects of the structure such as number of elements used, number of welds needed, outer surface area, etc. This research aims to show the difference in optimal solutions for four different topological cases of a typical trapezoidal roof truss looking at their effects on overall outer surface area. The truss layouts are optimized for sizing, and a combination of sizing and shape with a minimal weight objective function. In order to ensure the most practically applicable solutions the example optimized in this paper uses dynamic constraints for buckling, stress constraints, and nodal displacement constraints. The overall outer surface area for all cases is compared, as surface protection accounts for a substantial part of the total cost of roof truss construction. Optimal solutions show a lack of correlation between weight and surface area, which is discussed in the conclusion.

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Behavior and design for component and system of cold-formed steel roof trusses

Cited by 17 publications

References 8 publications

Damage Assessment Method for Light Steel Roof Frames: Case Study of Government Buildings

Damage Assessment Method for Light Steel Roof Frames: Case Study of Government Buildings

Determination of load transfer characteristics to connections between cold-formed steel truss and supporting system

Effects of Structural Optimization on Practical Roof Truss Construction

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