Results 231 to 240 of about 2,523 (265)

Dynamic Characteristics of Prestressed Waffle Slabs

Journal of Structural Engineering, 1990
The dynamic response and fatigue behavior of rectangular and skew prestressed concrete waffle slabs are investigated. Such slabs have several advantages over the more conventional slabs when used as decks for concrete bridges and as process floors in semiconductor manufacturing plants.
Nabil F. Grace, John B. Kennedy
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Rigidities of Nonorthogonally Shaped Waffle Slabs

Journal of the Structural Division, 1982
Theoretical formulae are presented for the various rigidities of non-orthogonally shaped waffle concrete slabs for both the precracking and postcracking stages. The deduced expressions for the flexural, coupling and torsional rigidites are applicable to both reinforced and prestressed concrete constructions.
John B. Kennedy, K. J. Iyengar
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Analysis of Waffle Slabs with and without Openings

Structures Congress 2009, 2009
Current design procedures do not provide recommendations specific for waffle slabs. Designers smear the contribution of the ribs and use the design guidelines for flat slabs to design ribbed slabs. In addition, the effect of openings on the response of waffle slabs is not fully explored.
Ahmed Ibrahim, Hani Salim, Hamdy Shehab Eldin   +2 more
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Waffle Slabs Supported on Rows of Columns

Journal of Structural Mechanics, 1981
ABSTRACT By incorporating recent theoretical developments covering plates with eccentric stiffeners, an approximate analysis of reinforced concrete waffle slabs supported on rows of columns is presented. The corner slab panel is treated as a rectangular orthotropic slab supported at its four corners, and its solution can be put in a simple closed form.
Pisidhi Karasudhi, Intarachai Hovichitr, Seng-Lip Lee   +2 more
openaire   +1 more source

Waffle, Ribbed and Composite Joists Slabs: A Review Study

Construction Technologies and Architecture, 2023
Due to the importance of the joists slab system as an excellent solution for increasing span demands in different building types, investigating its properties becomes essential for different researchers. The effects of numerous parameters on the structural behaviour of the joists slab system, whether it was a waffle, ripped, or composite sections were ...
Abdullah Sikar Al-Issawi, Najlaa Hameed Alshareef, Abbas Salim Al-Ameeri   +2 more
openaire   +1 more source

Prestressed Waffle Slab Bridges — Elastic Behavior

Journal of the Structural Division, 1980
A series solution has been development to analyze the elastic behavior of post-tensioned waffle slab bridges subjected to laterally applied uniform and concentrated (patch) loads. The solution applies to bridges of rectangular and skew planforms. Realistic estimates of the orthotropic rigidities of waffle construction are used in the solution.
John B. Kennedy, Ibrahim S. El-Sebakhy
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Waffle Slab Concrete Bridges: Ultimate Behavior

Journal of the Structural Division, 1982
The structural response of reinforced and prestressed concrete waffle slab bridges has been examined under working loads as well as under ultimate collapse loads. Bridges of rectangular and skew planforms are studied. The elastic analysis is based on a Fourier series solution, while the ultimate load analysis is formulated using yield-line theory.
John B. Kennedy, Ibrahim S. El-Sebakhy
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Flat Slab and Waffle Slab Systems

1994
The effects of column grid size, number of storeys, use of mild/high yield steel reinforcement, location of structural element, grade of concrete and provision of column heads in structural systems on the quantities of various constituents of reinforced concrete construction using flat slabs and waffle slabs have been studied and presented in the form ...
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Assessment and Restoration of Post-Tensioned Waffle Slabs

Structures Congress 2010, 2010
The use of un-bonded post-tensioned (PT) reinforcement in waffle slabs has been popular for many decades in buildings and parking structures. The use of PT reinforcement in waffle slabs greatly reduces the amount of cracking and possible leakage in the structure and also allows economical long-span construction.
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Orientation of Ribs in Waffle‐Slab Skew Bridges

Journal of Structural Engineering, 1983
An experimental study is presented on the structural response of reinforced concrete skew bridges of: (a) orthogonally, (b) nonorthogonally shaped waffle slab constructions, and (c) solid slab construction. The response is examined under elastic and ultimate load conditions.
openaire   +1 more source