Roof Renovation for "Locanda alla Posta" in Venice, Italy
Customer Project
![[IT] CP 001175 | Roof Renovation for "Locanda alla Posta" in Venice, Italy](/-/media/Images/netgenium/thumbnails/x/0/8/5/9/3085926/3085926.png?la=en-US&mw=578&mlid=388F2B02D6244BD782B20B63139514CE&hash=878A73642DC313BEB2B081EF5BA27A82EC0CA251)
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Image - Roof Lifting and Placement Process (© Ri-Legno Srl)
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Image - Deformation during Lifting (© Ri-Legno Srl)
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Image - Special Support Condition (© Ri-Legno Srl)
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Image - Interior Roof View (© Ri-Legno Srl)
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![Roof renovation for "Locanda alla Posta" in Venice, Italy]()
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Image - Roof Renovation for "Locanda alla Posta" in Venice, Italy
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Image - Reinforced Concrete Structure
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Image - Structural Analysis Program RFEM | Reinforced concrete 3D structure
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Image - Result: Reinforcement Direction with Main Tension Force in the Considered Element
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![Result: User-Defined Reinforcement Direction]()
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Image - Result: User-Defined Reinforcement Direction
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Image - Extract from Calculation Details in RF-CONRETE Surfaces
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Image - Selecting objects integrated in surfaces
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Image - Graphical display of the local z-surface sides
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Image - Selecting Related Objects
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Image - Structural Analysis Program RFEM | Reinforced Concrete 3D Structure
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In 2017 Scaldaferro, a Torrone manufacturer in Dolo (Venice) and owner of the historic building "Locanda alla Posta", contracted Ri-Legno S.r.l., a leading company in timber reconstruction, to deal with the building's 55.7 ft x 52.4 ft timber roof.
| Investor |
Locanda alla Posta Srls Via Cà Tron, 33 30031 Dolo, Italy
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| Structural Planning and Construction |
Ri-Legno Srl Via della Cooperazione, 163-167 38123 Trento, Italy
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| Architectural Design | Arch. Carlo dalla Pace |
Model
The existing roof was severely deteriorated and decayed, and therefore, after a careful inspection, Ri-Legno decided to rebuild the roof from scratch and recreate the truss configuration according to the original construction.
Structural Design
The Ri-Legno planning office designed the structural framework using RFEM structural analysis software and the add-on modules RF-DYNAM Pro for evaluating the structure's dynamic behavior and RF-TIMBER Pro for the load-bearing timber member design.The roof geometry took into account the existing construction scheme: Piedmontese timber roof trusses (orditura alla piemontese) and Italian roof trusses (capriata all'italiana). The roof trusses have a span of approximately 55.7 ft and include struts providing intermediate support to the rafters. The rafters running perpendicular to the ridge line support the roof covering with slab-like hollow clay bricks as well as monk and nun tiles.
The truss beam joints were reinforced with steel elements to prevent the movement of structural components. Additionally, special consideration was given to the structure's placement process by developing an ad hoc model in RFEM to estimate the roof's stress state during lifting.
A unique feature of this roof renovation is that the 2,906.2 ft² roof was completely constructed on the ground (to ensure that construction under the roof could continue during this time), then lifted and placed as a block on the existing vertical masonry structure.
Project Location
Keywords
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New
Timber Beam-Column Design per NDS 2018 Using RF-/TIMBER AWC Module
In this article, the adequacy of a 2x4 dimension lumber subject to combined bi-axial bending and axial compression is verified using RF-/TIMBER AWC add-on module. The beam-column properties and loading are based on example E1.8 of AWC Structural Wood Design Examples 2015/2018.
The cross-section resistance design analyzes tension and compression along the grain, bending, bending and tension/compression as well as the strength in shear due to shear force.
The design of structural components at risk of buckling or lateral-torsional buckling is performed according to the Equivalent Member Method and considers the systematic axial compression, bending with and without compressive force as well as bending and tension. Deflection of inner spans and cantilevers is compared to the maximal allowable deflection.
Separate design cases allow for a flexible and stability analysis of members, sets of members, and loads.
Design-relevant parameters such as the stability analysis type, member slendernesses, and limit deflections can be freely adjusted.
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Programs Used for Structural Analysis
Main Program
Structural engineering software for finite element analysis (FEA) of planar and spatial structural systems consisting of plates, walls, shells, members (beams), solids and contact elements
3,540.00 USD
Add-on Module
Timber design according to Eurocode 5, SIA 265 and/or DIN 1052
1,120.00 USD
Add-on Module
Seismic and static load analysis using the multi-modal response spectrum analysis
760.00 USD
