Flat Slab Reinforcement Plan

The four test specimens were prepared to model the interior bay flat plate slab-column connections in a typical flat plate slab building. Flat Slab System The flat slab is similar to the flat plate, but has thickened portions. See the Cast-In-Place Concrete Slab Spans standard drawings for shear key details. SECTION ANALYSIS AND DESIGN OF FLAT SLAB USING ETABS SOFTWARE CONCLUSIONS As per Indian code we are using cube strength but in international standards cylindered are used which gives higher strength than cube. Lawrence F. • Casting of 200mm thick floor slab. Section 11. Waffle slabs: A two-way slab reinforced by ribs in two-dimensions. It takes very. The east half of this slab was treated with colloidal silica and did not get the dissipating-resin curing compound used on the other four slabs. Use a piece of burlap to remove rust, mill scale, grease, mud, or other foreign matter from the bars. unit has been poured and cured according to Section 702 Do not remove slab falsework until the. • Although not included in ASTM C478, plants may use ASTM A706 reinforcing steel when welding reinforcing mats. In the past, several investigations took place but no theory so far could describe the punching shear behavior of flat slabs with shear reinforcement satisfactorily. Main bars are 12 mm in diameter @ 150 mm centre to centre spacing ; Distribution bars are 8 mm in diameter @ 150 mm centre to centre spacing. Dwg file format. A mud slab can be utilized to facilitate the installation of vapor retarder membranes and waterproofing membranes. center of slab "'----when required by engineer 28' oia. This system is usually defined as a single-sided or double-sided support system with the entire load of slab being placed on supporting columns and a square shaped slab known as drop panels. The basic requirements for the construction of a monolithic slab include proper site preparation and reinforcement of the concrete. For that reason, several researchers around the world not only in Egypt. the slabs supported directly on columns, without beams between columns. 7 is a plan view of a form of slab shear reinforcing assembly unit of the. Slab supported directly by columns are called flat slab. 7 of BS 8110, the simplified method can be used for flat slabs that the lateral stability is not dependent on the slab and columns provided that the following conditions are met;. 53 % at the interior slab-column connections and 0. Flat Slab Analysis and Design. of structural engineering i. The proper size of rebar for a particular slab depends on the slab’s intended use, its thickness and strength and whether the rebar is the only reinforcement. Concrete, Block, and Slab Foundations Climate, including high water tables, frost lines, harsh winters, and vulnerability to storm surge and high winds, will determine whether a slab or below. 1—Introduction In flat-plate floors, slab-column connections are subjected to high shear stresses produced by the transfer of the internal forces between the columns an d the slabs. The supplementary bonded reinforcement enhanced overall behavior providing crack control and increasing shear and flexural strength. Construction Technology & civil Work. “This Code does not apply to design and construction of slabs-on-ground, unless the slab transmits vertical loads or lateral forces from other portions of the structure to the soil” ACI 318 R1. For the calculations, the 2. In many cases the slabs are of such proportions and are supported in such way that two-way action results. 1—Collapse of parking garage flat slab at Gretzenbach (Switzerland, 2004): (a) view of flat slab after collapse (with ground cover, columns indicated inside circles); and. flat slabs and pad foundations Shear There are three approaches to designing for shear: • When shear reinforcement is notrequired e. Drops are important criteria in increasing. Find PowerPoint Presentations and Slides using the power of XPowerPoint. These benefits include; reducing the construction time and reducing story height, which results in more stories for the same building,. REINFORCEMENT FOR INTERNAL PANELS •Reinforcement are arranged in 2 directions parallel to each span; and •2/3 of the reinforcement required to resist negative moment in the column strip must be placed in the centre half of the strip •for slab with drops, the top reinforcement should be placed evenly across the. Cantilever 7 Simply supported 20 Continuous 26. reinforcement at an early stage of the test before reaching the calculated effective section yield. • Flat Slab By Pranav Padmane 1) Thickness of flat slab:-The thickness of flat slab shall be generally controlled by considerations of span to effective depth ratio. The installation of the rebar is critical for the success of the overall project. Assume partitions cannot be damaged by deflections. Flat slab system is very simple to construct and is efficient in that it requires the minimum building height for a given number of stories. Waffle slabs are used for longer spans, 30 to 45 feet (9m to 13. the slab reinforcing was checked for strength. Also Read: Difference between Precast and Cast in Situ. All slabs had a plan dimensions of 1200 × 1200 mm and a constant flexural reinforcement ratio 0. Ysis Between A Beam Supported Structure And Flat Plate. The scope of work will be as below. 1—Plan at slab edge of two-way slab with added S&T reinforcement. Waffle slab example. A concrete floor is typically one in which a flat slab is formed of concrete, which is either poured in-situ or precast in a factory. Feasibility of structural design of members has been ensured under the provision of IS: 456 ­2000. A flat piece of concrete, put on the walls or columns of a structure. michigan department of transportation drawing sheet as-let plan revisions no. A nominal amount of top reinforcing consisting of #[email protected]” was required for the negative moment over the beams. Neglect compression reinforcement. Detailing minima and maxima. In many cases the slabs are of such proportions and are supported in such way that two-way action results. For 6-inch and thicker slabs, deformed bars are more typical, with a. No rib & block slab is too small or too big, too close or too far. The overall tendency is to shrink and this can cause cracking at an early age. One Way Concrete Slab Beam Floor System Dimensions. Copy from Library Button: Opens the Library - Materials – Reinforcing. Longitudinal slab reinforcement did yield, and slab stirrups showed high strains. Some transverse reinforcement was present, which correlated with the patent, but it was so widely spaced - over five feet on center - that its intended purpose was likely just to support the draped geometry of the two primary layers of slab reinforcement. 18 in January 1986, and continued to be enhanced in successive releases up to Release 12 in June 1992. Redesign the typical exterior panel of the floor of Example 13. 17: Flat Slab depth to be revised, if steel area exceeds 182 cm2. These slabs are very satisfactory for heavy loads and long spans. Usually, when a slab is supported by a beam the support is considered to be pinned. 7 mm) are used for all slab reinforcement. For 6-inch and thicker slabs, deformed bars are more typical, with a. The reinforced concrete waffle slab (ribbed slab) plan view includes main top longitudinal and transverse reinforcement, ribbing (beams) reinforcement, waffles dimensioning, voids width. They have a number of outstanding advantages. Diagrams of types of flat slabs Flat slab with drop panel and capital Flat plate (with no drops, etc) c. wSD = 20 psf wLL = 80 psf f'c = 4000 psi fy = 60,000 psi span. Reinforcement system of simple supported and continuous one-way slabs, the distribution steel 7. A flat slab is a two-way reinforced concrete slab that usually does not have beams and girders, and the loads are transferred directly to the supporting concrete columns. 2006 for seismic zones III, IV and V with varying height 21m, 27 m , 33 m and 39. Floating or "Alaska" slab foundations can save building cost and time when used on garages, sheds and small barns. Construction detail. Joists are mainly economical in longer spans of around 30 ft, which took them out as an option since none of the spans are that long. 1—Collapse of parking garage flat slab at Gretzenbach (Switzerland, 2004): (a) view of flat slab after collapse (with ground cover, columns indicated inside circles); and. Detail is a plan view of a ribbed waffle slab that can be used as an example for other projects. method, the flat slab building having a rectangular plan is modeled as a sequence of longitudinal and transversal plane frames. Description Concrete Floor Slab Reinforcement Example. The Retreat Granny Flat Kit for your Concrete Slab. Job Criteria: 1) Preparing and checking Structural schematic framing with respect to Architectural plan. Design beams if any, using procedures you learned in CIVL. The concrete craftsman can greatly influence the quality, durability, and appearance of the finished product. 3 Ribbed and Waffle Slab. The panels act as permanent forms for a cast-in-place deck. Specialises in the production of flat steel products, including slab, hot rolled coil, cold rolled coil, plate, tin plate and value-added metallic coated and painted steel products. Waffle slabs are used for longer spans, 30 to 45 feet (9m to 13. REINFORCEMENT Conventional Reinforcing Steel • Typically used in base slabs and flat slab tops. The thickness of the flat slab up to spans of 10 m shall be generally controlled by considerations of span( L ) to effective depth ( d ) ratios given as below: Table 1: Span to depth ratio. Reinforced Concrete Slab Design Manual. flat slabs and pad foundations Shear There are three approaches to designing for shear: • When shear reinforcement is notrequired e. Concrete slab floor construction was often used for internal garages or lower levels of split level houses, with suspended floors used for other parts of the house. Flat slab construction method basically involves reinforcing concrete slab supported by concrete columns directly without any use of beams. What is Flat Slab? The flat slab is a two-way reinforced concrete slab that usually does not have beams and girders, and the loads are transferred directly to the supporting concrete columns. Unless otherwise noted, all referenced table, figure, and equation numbers are from that book. Some of the transverse reinforcement in the column and in the connection yielded towards the end of the test. slab spans 30 feet in length, and … " for concrete flat slab spans for concrete flat slab spans 22 feet in length, ‰ " for concrete flat F ori n st a eud lg- m fc, b „ "ra d ep lus th ow ncf- im. Slab supported directly by columns are called flat slab. Strengthening of Flat Slabs Against Punching Shear Using Post-Installed Shear Reinforcement by Miguel Fernández Ruiz, Aurelio Muttoni, and Jakob Kunz Fig. 4: Flat Slab Systems RC slabs with long spans extended over several bays and only supported by columns, without beams known as flat slab. According to clause 3. Reinforcement for slabs is typically placed in the middle-to-upper third of the slab thickness. Thus flat slabs give an economical alternative in utilizing the internal space to maximum extent. conventional beam-slab design Other possible flat slab arrangements Waffle slab Band beam slab Flat slab plan and elevation Typical layout and sectional view As built RC flat plate Refer to photograph Note absence of beams What is punching. Waffle slabs are used for longer spans, 30 to 45 feet (9m to 13. Strutting may be required on culvert extensions when existing parapet is removed. The opening that the Architect wants to put is for a scupper drain which have a width of 150 (on plan) and a depth of approximately 100mm (the drain is just to connect to the oil interceptor). a concrete slab poured on the ground level. The procedure includes finding the optimum column layout, cross-sectional dimensions and reinforcement of concrete elements. The reinforced concrete waffle slab (ribbed slab) plan view includes main top longitudinal and transverse reinforcement, ribbing (beams) reinforcement, waffles dimensioning, voids width. slab spans 30 feet in length, and … " for concrete flat slab spans for concrete flat slab spans 22 feet in length, ‰ " for concrete flat F ori n st a eud lg- m fc, b „ "ra d ep lus th ow ncf- im. Here, we have tried to gather various reading materials available in the web about flat slab floor system in one place. Volume 4, Issue 12, July 2015 63 Loads and Boundary Conditions The slab is carrying a total working load equal to 12. 1 contains provisions for two-way slabs with shear reinforcement, including headed shear stud reinforcement, which can be used in flat plate voided concrete slabs. Reinforcement for slabs is typically placed in the middle-to-upper third of the slab thickness. Reinforcement detailing of a slab is done based on its support conditions. The cross-sectional area of the steel is inserted into engineering formulae found in ACI 318 to determine the load carrying capacity for a given slab design. A concrete floor is typically one in which a flat slab is formed of concrete, which is either poured in-situ or precast in a factory. plywood sheathing (plyform). Figure B-10: Alternative Floor Slab Detail. They are flat concrete pads poured directly on the ground. details flat slab typical bay and reinforcement details 4th year b. Whether it is 2 storey or 10 storey, the thickness of the slab is based on the span and type of slab and not on the number of stories. A FINITE ELEMENT APPROACH TO REINFORCED CONCRETE SLAB DESIGN Approved by: Dr. previous flat plate test results. The flat slab arrangement of structure is one in which the beam is used in the conventional procedures of construction through away with the directly rests on column as well as the load from the slabs is directly conveyed to the columns and then to the footing. There are detailed rules for punching shear reinforcement. The dimensions of the reinforcing rods are stated in the installation plan. Design of a hotel in Al-Khobar city using two different slab methods ‏سبتمبر 2016 – ‏مايو 2017. The structural frame consists of four columns, two beams and one slab. • check the location and orientation of flat slabs - the right elements in right direction • spigots etc. Cinque & G. ACI-CCS-1(10) Slabs on Ground. The example building consists of the main block and a service block connected by. Calculate Aspect Ratio Aspect Ratio > 2 = Longer span/Shorter span 2. Illustrated example of how to reinforce a flat slab with a void opening in the middle. Feasibility of structural design of members has been ensured under the provision of IS: 456 ­2000. One Way Concrete Slab Beam Floor System Dimensions. field study of bridge concrete approach slab (ltrc 05-1gt) 2007 louisiana transportation engineering conference baton rouge, la feb. Detailing minima and maxima. However, flat slabs have a lower stiffness in comparison to a beam-column floor plan which can lead to relatively large deflections. What is Flat Slab? The flat slab is a two-way reinforced concrete slab that usually does not have beams and girders, and the loads are transferred directly to the supporting concrete columns. Bill every reinforcing bar in a slab on a plan. StruBIM Suite. Flat slabs include two-way reinforced concrete slabs with capitals, drop panels, or both. A topping is then placed. A Flat Slab can also be refers to as Beamless Slab, It is a reinforced concrete slab supported directly by concrete columns without the use of beams. michigan department of transportation drawing sheet as-let plan revisions no. A civil engineer should have clear and concise ideas on all the features of the flat floor system. 2 RESEARCH OBJECTIVES. The effects of flexural reinforcement and shear reinforcement on the punching shear strength of slab-column connections are analyzed in this study. paper, Comparative Study of Conventional Slab and Flat plate system _ comparison between conventional slab system (i. Reinforced Slab Bridges: For short spans, a solid reinforced concrete slab, generally cast in-situ rather than precast, is the simplest design. 60” Manhole Featuring “Easy Lift” on all manhole sections Top Unit Base Unit Grade adjustment rings available in 2”, 4” & 6” Base units are available in 2’ to 5’ heights. Although the formwork is more expensive than for flat plates, flat slabs will require less concrete and reinforcing than would be required for flat plates with the same loads and spans. Flat plate concrete floor system does not use beams between columns or. Perimeter of flat slabs 8. The proposed method is based on a strut-and-tie model. Static models 4. Flab slabs: Slabs of uniform thickness bending and reinforced in two directions and supported directly by columns without beams. They provide a flat surface for the membranes, which are then fully supported and much less likely to be punctured by subsequent construction activities. Flat Slab Opening Reinforcement Detail. 583%, which is sufficient to prevent specimens from flexural failure. Proprietary punching shear reinforcement systems Thin flat slab construction will almost certainly require punching shear reinforcement at columns. Wire mesh or thick reinforcement bars ("rebar") has long been a component of concrete slabs. Also Explore the Seminar Topics Paper on Bubble Deck Slab with Abstract or Synopsis, Documentation on Advantages and Disadvantages, Base Paper Presentation Slides for IEEE Final Year Civil Engineering CE or IEEE Civil Construction BTech, BE, MTech Students for the year 2015 2016. Combination of this with a flat slab construction approach spanning in two directions – the slab is connected directly to insitu concrete columns without any beams - produces a wide range of cost and construction benefits including:-† Design Freedom– flexible layout easily adapts to irregular & curved plan layouts. Jackson Crossing 5 Executive Summary Jackson Crossing is a low income residential apartment building in Alexandria, Virginia. Perimeter of flat slabs 8. for strip seal expansion joint note, see sheet 3 5. usually slabs. 5 E s 200 GPa d g 32 mm Ductility class B 1. These materials are originally located at different websites. The example building consists of the main block and a service block connected by. The remaining 18% is the material and placing cost of the mild reinforcement. Punching shear is a phenomenon in flat slabs caused by concentrated support reactions inducing a cone shaped perforation starting from the top surface of the slab. therefore the careful analysis of flat slab is important. Flat slabs are considered to be faster and more economic than other forms of construction, as partition heads do not need to be cut around downstand beams or ribs. stud reinforcement seems to have little or no effectiveness in increasing connection ductility. DESIGN AND DETAILING OF FLAT SLAB ESE SOEDARSONO HS 27 FEBRUARY 2002 CONTENT • Introduction • Benefits • Design Considerations • Design Methodology • Analysis of Flat Slab • Detailing INTRODUCTION What is a flat slab? • a reinforced concrete slab supported directly by concrete columns without the use of beams INTRODUCTION Flat slab Flat slab with drop panels Flat slab with column. An optimal plan geometry with all same supports is a square, based on load distribution into both directions. This has traditionally taken the form of a large number of individual shear links arranged on a series of perimeters from the edge of the column. , which is the nominal depth of a 2 x 4 plus ¾ in. 2 Design Slab Shear Reinforcement 6-13. FLAT SLAB CONSTRUCTION I Filed Jan. usually one and two-way spanning slabs • Punching shear –e. This article presents an alternative method for designing concrete flat slabs subjected to flexure-induced punching. This load covers the slab own weight and a live load equal to 3. Drawing detail is drawn on a 1:100 scale and includes two different options of detailing such void openings. 4—Prestressed slab-column connection CHAPTER 1—INTRODUCTION AND SCOPE 1. 1 The provisions of this section may be used as alternative to those of 6. Reinforcing is 0. Punching, unbuttoning and perforation 11. Typical flat slab 2. we plan for shrinkage to take place at control and construction joints. The slab has to carry a distributed permanent action of 1. 1R-08, Guide to Shear Reinforcement for Slabs, and ACI 421. The suspended reinforced concrete slab is tied into the external capping beam at floor level. The joint reinforcement must go beyond the butt of the plates by at least 500mm in the installation plan. Punching of Reinforced Concrete Flat Slabs with Double- Headed Shear Reinforcement specimens were square slabs 2. Concrete slab floor construction was often used for internal garages or lower levels of split level houses, with suspended floors used for other parts of the house. Concrete material, placing, and finishing account for about 36% of the cost. A flat slab consists of a reinforced concrete slab that is directly supported by concrete columns. Some of the advantages are: 1. Drawing labels, details, and other text information extracted from the CAD file: drop panel, column capital, column, mm bars mm both ways as drop panel reinforcement, nos. 5D Analysis model. For these case studies they have created models for two way slabs with shear wall and flat slab with shear wall, for each plan size of 16X24 m and 15X25 m, analyzed with Staad Pro. Now Calculate Bar Bending Schedule for Two Way Slab. Reinforcement for slabs is typically placed in the middle-to-upper third of the slab thickness. Reinforcement system of simple supported and continuous one-way slabs, the distribution steel 7. The main difference between flat slab & conventional slab-beam system is that the one is directly supported on the column while another system has a beam for support. Flat Slab Analysis and Design. 0 ounce per square foot) galvanized coating for welded wire embedded in either concrete or soil according to ASTM A 641/A 641M. of the Standard Specifications. estimating the elements in the Tower zone which can be a single or multiple repetitive floor plans. wSD = 20 psf wLL = 80 psf f'c = 4000 psi fy = 60,000 psi span. We have found the follow-ing rules of thumb to be useful in estimating the approximate depth of a structural member as well. see plans for elevations, drainage structure locations, type of grate units shall require submission of working drawings. Key points. It takes very. Support to slab is generally provided through walls or beams or columns. Bill every reinforcing bar in a slab on a plan. This checklist will help you get the quality concrete slab floor you are looking for. The structural frame consists of four columns, two beams and one slab. CVEN 444: STRUCTURAL CONCRETE DESIGN CLASS PROJECT The structural floor plan of a three-story (ground plus 3 floors) office building is shown on the next page. Reinforced concrete ground floor slab resting directly on the subsoil or foundation is known as ground-bearing slab while the other slabs found in the building are called suspended slabs. 4 Reinforcing across the joints Joint reinforcement between the slabs is guaranteed either in the form of reinforcing steel mesh or individual reinforcing rods. In a flat-slab floor system supported directly by columns, all applied loads must be carried in each direction, i. *it is not considered a structural slab, but can have reinforcement to assist in load carrying and resistance to cracking. A civil engineer should have clear and concise ideas on all the features of the flat floor system. ACI-CCS-1(10) Slabs on Ground presents information on concrete that should be useful to concrete craftsmen and deals mainly with construction practices relating to slabs-on-ground. Alternate Design Method- Design Procedure of Two-way Slabs using ACI Moment Coefficients and Approved by BNBC 2013 Scope and Limitations (BNBC) 6. The slab top reinforcement ratio is 0. Floor slab thickness. Flab slabs: Slabs of uniform thickness bending and reinforced in two directions and supported directly by columns without beams. The flexibility of flat slab construction can lead to high economy and yet allow the architect great freedom of form. riser reinforcement shall be placed so it will have a minimum cover of. Flat-Slab General Definition. Waist slab: Waist slab refers to a slab of the stair that is inclining from the floor slab to the landing slab. Strengthening of Flat Slabs Against Punching Shear Using Post-Installed Shear Reinforcement by Miguel Fernández Ruiz, Aurelio Muttoni, and Jakob Kunz Fig. PLAN ELEVATION A-A PLAN ELEVATION CONTROLLER CABINET FOUNDATION PAD MOUNT The Controller Cabinet Foundation shall be bid as Concrete Foundation - Traffic Signals. Maximum rebar spacing at the critical sections is 2 x slab thickness, but not more than 18 in. e reinforced concrete flat slab. Structural steel may be rebar or WWF. 2% in analytical results. 2 VERSION 6. • Learned how to arrange and fixing of reinforcement for; Retaining Wall, Retaining Wall Base, Column base, columns, slab, beam. This paper presents the results of an extensive experimental campaign on 16 flat-slab specimens with and without punching shear reinforcement. This checklist will help you get the quality concrete slab floor you are looking for. Alternate Design Method- Design Procedure of Two-way Slabs using ACI Moment Coefficients and Approved by BNBC 2013 Scope and Limitations (BNBC) 6. The example building consists of the main block and a service block connected by. It is also cost-effective, since the flat, level soffit means that falsework and formwork are also simple. It takes very. For the study, six slab-column connection specimens were constructed with varying flexural reinforcement and shear reinforcement, and were subjected to gravity load tests. 583%, which is sufficient to prevent specimens from flexural failure. The alternatives are: adding different types of punching-shear reinforcement, using discreet fibers in concrete mixes, and increasing thickness of slab around. Also Read: Difference between Precast and Cast in Situ. In addition to this, the shear capacity can also be reduced in particular around the column head where large shear forces can develop. STRUCTURAL DESIGN CALCULATIONS Project South Kensington Station Stabilisation Permanent Works to Upper Roof Project No. Concrete slab floor construction was often used for internal garages or lower levels of split level houses, with suspended floors used for other parts of the house. slab spans 30 feet in length, and … " for concrete flat slab spans for concrete flat slab spans 22 feet in length, ‰ " for concrete flat F ori n st a eud lg- m fc, b „ "ra d ep lus th ow ncf- im. This presentation will surely help engineers to learn the reinforcement detailing of RCC members. Slab Sections can be used for LFD or LRFD. Difference Between One Way Slab and Two Way Slab How to Read Building Foundations Drawing plans. The joint reinforcement must go beyond the butt of the plates by at least 500mm in the installation plan. It is observed that theexperimental ultimate strength for Shear reinforcement in slabs is 28. The overall tendency is to shrink and this can cause cracking at an early age. Reinforcement concentration over a column. For Section thru Slab and Slab Drain Details, see Sh. 7 is a plan view of a form of slab shear reinforcing assembly unit of the. Its necessary to check the slab deflection for all load cases both for short and long term basis. ACI-CCS-1(10) Slabs on Ground presents information on concrete that should be useful to concrete craftsmen and deals mainly with construction practices relating to slabs-on-ground. The cross-sectional area of the steel is inserted into engineering formulae found in ACI 318 to determine the load carrying capacity for a given slab design. It is an extremely simple structure in concept and construction, consisting of a slab of uniform thickness supported directly by the columns with no. The objective function is the total cost of the building including the cost of floors, columns and foundations. Redesign the typical exterior panel of the floor of Example 13. Design beams if any, using procedures you learned in CIVL. 0kN/m2 in addition to 2. Reinforcement system of simple supported and continuous one-way slabs, the distribution steel 7. Usually, when a slab is supported by a beam the support is considered to be pinned. What is Flat Slab? The flat slab is a two-way reinforced concrete slab that usually does not have beams and girders, and the loads are transferred directly to the supporting concrete columns. The joint reinforcement must go beyond the butt of the plates by at least 500mm in the installation plan. Mud slabs are usually a 2" to 3" unreinforced concrete slab with a float finish. Punching of flat slabs – design for shear at th e column heads 12. Some of the transverse reinforcement in the column and in the connection yielded towards the end of the test. In this case, reinforcement bars should be properly detailed between the columns and slabs. We consider slab system anti-burst design is 99% empirical, i. It is observed that theexperimental ultimate strength for Shear reinforcement in slabs is 28. Multi-Family House Plans - Triplex, Quadplex and Townhouse Home Plans Multi-family house plans are commonly referred to as townhouse plans, multi-plex home plans, small apartments, triplexes and duplexes. They are either one-way spanning systems known as ribbed slab or a two-way ribbed system known as a waffle slab. Read "Punching shear of RC flat slabs – Review of analytical models for new and strengthening of existing slabs, Engineering Structures" on DeepDyve, the largest online rental service for scholarly research with thousands of academic publications available at your fingertips. The principal features of a flat slab floor are a flat soffit, simple formwork and easy construction. Swanger School of Civil and Environmental Engineering. 4—Prestressed slab-column connection CHAPTER 1—INTRODUCTION AND SCOPE 1. 5-inch cover is recommended from the top of the slab to the WWR. reinforcement shown in Fig. Drawing labels, details, and other text information extracted from the CAD file: drop panel, column capital, column, mm bars mm both ways as drop panel reinforcement, nos. However, with proper ground preparation, a good concrete mix, and sufficient expansion joints, it really isn't necessary. Grade stakes for foundation depth not further apart than 8’-0” on cont. Self-weight of slabs is automatically calculated and may be optionally excluded in the analysis. Repeat the process for Reinforcing Steel. Downloading CAD Details. Flight: The series of steps between floor and landing. Punching Shear Retrofit Method Using Shear Bolts for Reinforced Concrete Slabs under Seismic Loading by Wensheng Bu A thesis presented to the University of Waterloo in fulfillment of the thesis requirement for the degree of Doctor of Philosophy in Civil Engineering Waterloo, Ontario, Canada, 2008 ©Wensheng Bu 2008. we plan for shrinkage to take place at control and construction joints. A reinforced concrete slab supported directly by concrete columns without the use of beams, such slab is called flat slab. A civil engineer must know all the aspects regarding the flat floor system. The alternatives are: adding different types of punching-shear reinforcement, using discreet fibers in concrete mixes, and increasing thickness of slab around. Once approved, the bespoke. Strengthening of Flat Slabs Against Punching Shear Using Post-Installed Shear Reinforcement by Miguel Fernández Ruiz, Aurelio Muttoni, and Jakob Kunz Fig. Domestic floor slabs on reasonably flat ground. A FINITE ELEMENT APPROACH TO REINFORCED CONCRETE SLAB DESIGN Approved by: Dr. The Institution of Structural Engineers The Institution of Civil Engineers MARCH 2000 Manual for the design of reinforced concrete building structures to EC2. Landing: The level of floor between flight. Flat slab with drop panels. Slab reinforcement detailing {one way or two way}(3) - Duration: 3:04. reinforcement at an early stage of the test before reaching the calculated effective section yield. Support to slab is generally provided through walls or beams or columns. The system still used today—which divides the bays between columns into column strips and middle strips and uses only an orthogonal arrangement of bars—was devised in. الانضمام إلى LinkedIn الملخص. Flat slab doesn’t have beams so it is also called as beam-less slab. Rebar, also known as reinforcement steel and reinforcing steel, is a steel bar or mesh of steel wires often used to reinforce concrete. The Institution of Structural Engineers The Institution of Civil Engineers MARCH 2000 Manual for the design of reinforced concrete building structures to EC2. Same design layout of slab reinforcement, shown in Fig. The saving of materials tends to be offset by some. The following concise summary submits the main developments of previous research on the punching of flat slabs. Slide 2 Typical Beam Reinforcement Tension Reinforcement Compression Reinforcement Stirrups This slide shows the typical reinforcement cage for a simple span concrete beam. Flat slab is a two way reinforced concrete slab in which the slab directly rest on the column without provision of beam. Recycled aggregate and steel can and are commonly used in precast concrete. usually slabs. INTRODUCTION. 2 RESEARCH OBJECTIVES. mm bars as capital reinforcement, mm dia stirrups at mm, column capital, column. transfer from slab to column is practically always present in flat slabs.