Instructional Materials Complementing FEMA 451, Design Examples Foundation Design 14-7 Reinforced Concrete Footings: Basic Design Criteria (concentrically loaded) d/2 (all sides) (c) Critical section for two-way shear (b) Critical section for one-way shear (a) Critical section for flexure Outside face of concrete column or line midway between ... The two examples in this tutorial provide step-by-step illustrations of how SAFE can be used to create, analyze, design and detail concrete slab systems. The first example is for a mild-reinforced concrete slab (R/C), and the second example deals with a post-tensioned structure (P/T).
supported in such way that two-way action results. An optimal plan geometry with all same supports is a square, based on load distribution into both directions. Preliminary Design of Slab Thickness Thickness design depends on boundary conditions (supports). We can distinguish two basic condi-tions: Principles of Solid Slab Bridges: The design principles of a solid slab bridge deck may be illustrated by the following illustrative example: Illustrative Example 1: Design a solid slab bridge superstructure having a clear span of 9.0 metres and carriageway of 7.5 metres with 1.5 metres wide footway on either side for a National Highway.
MODULE 1c STRUCTURAL ENGINEERING SYSTEMS PART 1. BUILDING MATERIALS & STRUCTURAL SYSTEMS SM 1c, 1&2 4 PUNCHING SHEAR occurs where a two-way concrete flat slab is connected to a column and it is the tendency of the slab to drop as a unit around the column. n The column appears to punch through the slab. demonstrates that slab heave, popularly believed to be caused by deficiencies in the stormwater drainage systems of the dwellings, is not the principal cause of damage. A limit state methodology for ultimate strength design of residential slabs is recommended as a cost-effective way to mitigate the slab heave problem with waffle rafts.
SLAB DESIGN The slabs are designed according to bending moment, shear and torsion. •In case of two-way slabs, the reinforcement against bending is estimated for both short and long directions for two-way slabs. Comparing Two Groups In our example, we have two groups. This is the same as saying there are two conditions or two levels of the independent variable. A two-group study is the simplest design that incorporates a number of experimental control techniques. Let’s look at some data that might be recorded from this study (see Table 11.2). Design of Slab (Examples and Tutorials) by Sharifah Maszura Syed Mohsin Example 1: Simply supported One way slab A rectangular reinforced concrete slab is simply-supported on two masonry walls 250 mm thick and 3.75 m apart. The slab has to carry a distributed permanent action of 1.0 kN/m2 (excluding slab self-weight) and a variable action of 3 ...
2.2 Design Models Without elaborating on the details. a few general comments on design models are warranted. Strut-and-tie models are a suitable basis for detailed design. Schlaich et al. , Marti [171 and Cook and Mitchell [181 provide details on the general use of these models. It is essential that the model is consistent. A detailed elastic Two-way Slab Behavior, Analysis & Design: explain the fundamental behavior and load transfer mechanisms of various slab systems for structural concrete buildings in particular two-way slabs; explain and select design layouts for slab systems; perform a yield line analysis of a two-way slab. acceptable. Two probes should be placed in homes with a building footprint greater than 1,500 ft2. 2. Commercial and small industrial buildings – three sub-slab probes are recommended for a footprint of 5,000 ft 2 with one probe for each additional 2,000 ft2. Figure 1 – Illustration of Sub -slab Probe Design
structures. No certain method can be found in the design codes or references for designing two-way slabs subjected to concentrated loads. However, plastic method can be the best method for designing such cases of two-way slabs. This method requires various formulas for different conditions of RC slab Reinforced Concrete Design. One way slab design example. Example 1: Design of interior three span slab as shown below ... Check if two adjacent spans differ more than ...
Aug 02, 2014 · You need to model the slab using plate elements. To design the slab, in the modelling mode, go to Design > Concrete > specify the design parameters > click on Commands > select Design Slab/Element and assign it to the required plate elements. In the output, you can view the slab design results.
demonstrates that slab heave, popularly believed to be caused by deficiencies in the stormwater drainage systems of the dwellings, is not the principal cause of damage. A limit state methodology for ultimate strength design of residential slabs is recommended as a cost-effective way to mitigate the slab heave problem with waffle rafts.
In this article, I will discuss how to design One way slab with example. What Is One Way Slab? When a slab is supported on all four sides and the ratio of long span to short span is equal or greater than two, it will be considered as one way slab. The load on the … View Notes - RC11_Slab2Way.pdf from CE 430431 at Suranaree University of Technology, Nakhon Ratchasima. 11 Reinforced Concrete Design Two-Way Slabs Design of Two-Way Slab Moment Coefficient Method • Flat Slab Design ... usually one and two-way spanning slabs ... Worked example From Worked Examples to EC2: Volume 1 Example 3.4.10.
Comparative study of design methods for two-way reinforced concrete slab systems: an engineering report in civil engineering. by Gibbs, Robert J. Sep 03, 2011 · Note: One-way spanning slabs should be treated as beams of unit width and Chapter 2 should be followed except for minimum shear reinforcement. Step 2 Design forces Draw panel of slab and indicate maximum design moments, shears and in- plane loads, if any, per unit width of slab. Step 3 Cover to reinforcement
Aug 30, 2017 · This spreadsheet program provides for the design and analysis of post-tensioned concrete one-way beam and slab systems and two-way flat plate slab systems. The program is divided into three separate screens, which correspond to the three major areas of concern in the design of a post-tensioned member. Sep 28, 2017 · In general, if the load from the slab is delivered to the beams in one direction, then the system is one-way. Conversely, if the load is delivered to the beams and the girders in two directions, then the system is considered two-way. Example: One-Way System. In this example, the pressure load from the slab is transferred directly to the beams.
Sample Design Calculations. This appendix presents design examples of the retrofitting techniques for elevation, dry floodproofing, wet . floodproofing, and construction of a floodwall in a residential setting. Examples C1 through C5 are a set of examples that illustrate the elevation of a single-story home with a crawlspace. Example C6 ...
Title: Lecture 25 Design of TwoWay Floor Slab System 1 Lecture 25 - Design of Two-Way Floor Slab System. August 6, 2003 ; CVEN 444; 2 Lecture Goals. Example of DDM ; Panel Design ; 3 Example 1 Design an interior panel of the two-way slab for the floor system.The floor consists of six panels at each direction, with a panel size 24 ft x 20 ft. Design Consideration: Full structurally continuity is assumed in the design at a construction joint with the reinforcement is fully continuous across the joint. Since we are casting the slab at different times, shear transfer and a potential crack may occur and thus shear friction check should be performed.