Author: Edward G. NawyPublisher:
ISBN:
Category : Science
Languages : en
Pages : 220
Book Description
Code Provisions for Deflection Control in Concrete Structures
Author: Edward G. NawyPublisher:
ISBN:
Category : Science
Languages : en
Pages : 220
Book Description
Building Code Requirements for Structural Concrete (ACI 318-05) and Commentary (ACI 318R-05)
Author: ACI Committee 318Publisher: American Concrete Institute
ISBN: 0870311719
Category : Law
Languages : en
Pages : 432
Book Description
Code Requirements for Environmental Engineering Concrete Structures (ACI 350-01) and Commentary (ACI 350R-01)
Author: ACI Committee 350Publisher: American Concrete Institute
ISBN: 0870310682
Category : Concrete construction
Languages : en
Pages : 393
Book Description
Standards for tests and materials - Durability requirements - Concrete quality, mixing, and placing - Formwork, embedded pipes, and construction and movement joints - Details of reinforcement - Analysis and design general considerations - Strength and serviceability requirements - Flexure and axial loads - Shear and torsion - Development and splices of reinforcement - Two-way slab systems - Walls - Footings - Precast concrete - Composite concrete flexural members - Prestressed concrete - Shells and folded plate members - Strength evaluation of existing structures - Special provisions for seismic design - Structural plain concrete.
Proposed Code Provisions for Slab Span Thickness Limitations Including Early-age Construction Loads and Time-dependent Effects
Author: Kwabena Ofosu-AsamoahPublisher:
ISBN:
Category :
Languages : en
Pages : 0
Book Description
A typical construction procedure for a multi-storey reinforced concrete building involves supporting newly cast slabs on a number of previously cast floors through a reshore system. The loads transferred by the forms to the previously cast partially cured supporting slabs may appreciably exceed the design capacity. A further complication is that large early-age construction loads applied to immature slabs will cause large immediate deflections and extensive flexural cracking. The large ratio of applied stress to developed strength, coupled with the low elastic moduli of the immature slabs, will cause significant creep, mostly non-recoverable, resulting in large longterm deflections. Shrinkage, though a non-stress originated concrete deformation phenomena, also affects concrete deformation and needs to be accounted for in calculations to predict longterm deflections. Most cases of deflection damage occur as a result of exceeding the permissible deflection of slabs supporting non-structural elements. This creates serviceability problems such as cracked partitions, jamming of doors and windows, and an uneven placement of furniture. In most cases, the visual impact of cracks and sagging floors may cause concern for safety of the structure even if the structure has adequate strength. Problems related to excessive slab deflection constitutes a serviceability limit state. Current deflection control provisions of the ACI and CSA codes do not address the sensitivity of slab deflections to early-age construction loading and schedule. The present study develops a more realistic span-thickness criterion which includes the effect of early-age construction loads, concrete strength and panel aspect ratio. Undesirable slab deflections can be reduced by appropriately chosen camber in the formwork. The concept is to use a prescribed camber to offset the immediate deflections. An equation is recommended for the estimation of the amount of camber needed for any given span.
Time-Dependent Behaviour of Concrete Structures
Author: Raymond Ian GilbertPublisher: CRC Press
ISBN: 1482288710
Category : Technology & Engineering
Languages : en
Pages : 447
Book Description
Serviceability failures of concrete structures involving excessive cracking or deflection are relatively common, even in structures that comply with code requirements. This is often as a result of a failure to adequately account for the time-dependent deformations of concrete in the design of the structure. The serviceability provisions embodied in
Building Code Requirements for Structural Concrete (ACI 318-08) and Commentary
Author: ACI Committee 318Publisher: American Concrete Institute
ISBN: 0870312642
Category : Building laws
Languages : en
Pages : 471
Book Description
The quality and testing of materials used in construction are covered by reference to the appropriate ASTM standard specifications. Welding of reinforcement is covered by reference to the appropriate AWS standard. Uses of the Code include adoption by reference in general building codes, and earlier editions have been widely used in this manner. The Code is written in a format that allows such reference without change to its language. Therefore, background details or suggestions for carrying out the requirements or intent of the Code portion cannot be included. The Commentary is provided for this purpose. Some of the considerations of the committee in developing the Code portion are discussed within the Commentary, with emphasis given to the explanation of new or revised provisions. Much of the research data referenced in preparing the Code is cited for the user desiring to study individual questions in greater detail. Other documents that provide suggestions for carrying out the requirements of the Code are also cited.
Structural Use of Concrete
Author: British Standards InstitutionPublisher:
ISBN: 9780580262081
Category : Concrete
Languages : en
Pages : 163
Book Description
Concretes, Construction materials, Buildings, Structures, Structural design, Loading, Reinforced concrete, Strength of materials, Framed structures, Beams, Slabs, Structural members, Shear stress, Columns, Walls, Stability, Stairs, Foundations, Reinforcement, Prestressed concrete, Precast concrete, Composite construction, Composition, Durability, Concrete mixes, Curing (concrete), Formwork, Finishes, Movement joints, Grouting
Concrete Structural Design for Buildings
Author: United States. Department of the ArmyPublisher:
ISBN:
Category : Buildings
Languages : en
Pages : 16
Book Description
ACI 562-19 Code Requirements for Assessment, Repair, and Rehabilitation of Existing Concrete Structures (ACI 562-19) and Comment
Author: ACI Committee 562Publisher:
ISBN: 9781641950626
Category :
Languages : en
Pages : 94
Book Description
Reinforced Concrete
Author: Edward G. NawyPublisher: Prentice Hall
ISBN: 0132417030
Category : Concrete construction
Languages : en
Pages : 940
Book Description
For one-semester, junior/senior-level and graduate courses in Reinforced Concrete in the department of civil engineering. Now reflecting the new 2008 ACI 318-08 Code and the new International Building Code (IBC-2006), the Sixth Edition of this cutting-edge text has been extensively revised to present state-of-the-art developments in reinforced concrete. It analyzes the design of reinforced concrete members through a unique and practical step-by-step trial and adjustment procedure. The narrative is supplemented with flowcharts to guide students logically through the learning process. Ample photographs of instructional testing of concrete members decreases the need for actual laboratory testing.