Waffle slab design in safe. Tech, M. Waffle slab and Prestressed waffle slab and manual calculation will be carried out for both. 5 × 7. Tue May 25, 2021 11:17 pm. Saccoman, Chairperson James Beerbower Ernest Markle Kevin Boyle James Markle Jeffrey Butler Milo J. Ø Ribbed slab · Modelling from scratch without using templates · Adding strips · Importing from AutoCAD · Importing loads from ETABS . SAFE can auto generate waffle slabs. Hello. design (D = 460mm) Ym = 53mm was common in recent field inspections in the western suburbs. Previous article CSI Detail Detailing the Rebars of Columns, Beams and Slabs – ETABS Tutorials. Waffle pod slabs tend to be optimal for flatter sites and fairly simple shapes. 5 shorter span ly = 6m longer span Clearly, ly/lx < 2, so you have a. I just came to know about this new foundation method known as post tensioned waffle mat slab foundation. Waffle Slab is economic To check weather it is safe to provide minimum depth of slab the latter option will be used to achieve better understanding for the design of two-way joist slab often called two-way ribbed slab or waffle slab. Download Links. The main objective of this project work is to come up with a design of waffle slab. Concrete floor systems are reinforced slab structures designed to satisfy a range of loading and span conditions in a building. Ø Flat slab. Just moved into a new house and I dare say the garage floor would have the waffle slab design. In this type, the slab will bend in one direction i. Arguably the most important aspect of any construction project, foundations transfer the huge forces exerted by the structure safely into the ground below. Slabs or foundations can be of any shape, and can include edges shaped with circular and spline curves. It is better, in this case, to design the beam for the torsion due to eccentric transfer to shear between slab-beam interface. RECUB is a horizontal formwork for the construction of bi-directional reticular slabs with reusable box moulds (waffles). this waffle is a panel n R. This PDF file contains a chapter of 23 pages with various aspects of flat slabs including four example of flat slab design. SAFE is ideal for modeling foundations, basemats, and footings. The objective . 0 m x 3. 5x6 lx = 5. As such, they reduce wastage and environmental impact. SCHWETZ, F. With the same standard items, slabs with different rib widths can be built, according to the fire protection standard (12, 16 and 20 cm). (a) A flat plate which is a two-way slab supported on a column grid without the use of beams. Becker Computerized Structural Design, S. Buettner and Roger J. Doing a word search for "opening" only shows specific results for openings in one-way and two-way slabs and walls. Title: Structural Design Of Waffle Slab Author: qa3. 0 2 9. In building, as in life, anything worth doing starts with great foundations. 1-8-2 Safe used the following codes in design: 1-Design for ACI 318-08 2-Design for AS 3600-01 3-Design for BS 8110-97 4-Design for CSA A23. The translucent material is illuminated by the ambient light of . Slab with arches. بر حسب نوع قالب های این نوع دال و ابع . Design menu > Show Design Tables Allows the user to select the type of information to include in the design tables to be viewed on- screen, including design output and design forces. slab is two way slab n =9 selected condition is four edges discontinued c =1 In this course we will design a 15 stories of a residential buildings, within the work we will define and design all types of slabs such as (waffle slab, one way ribbed slab, two way ribbed slab, flat slab and solid slab), all types of foundations such as (isolated,combined,strip and mat), earthquake with static and dynamic case, wind loads . A waffle slab foundation, also termed as ribbed slab foundation, is a structure that is plain at the top and has a grid-like system (called the ribs) at the bottom. Post-tensioning may be included in both slabs and beams to balance a percentage of the self-weight. Each new ACI Building Code expresses the latest knowledge of reinforced concrete in legal language for safe design application. The two-way waffle slab is economical when it is used in the modular or prefabricated form. 25LL) and Long-Term Deflection for DL+SDL+ . Neglect compression reinforcement. Each new code thus . Skills : I am working in CSI Etabs & Sap2000 & Safe & staad pro & robot & autocad & prokon & Revit and many other. abdulqadeer29 posted a topic in Concrete Design, August 20, 2013. Detail Download Jan 12, 2018 - Explore Darwish Architects's board "Waffle slab" on Pinterest. I haven't done . These materials are originally located at different websites. See more ideas about slab, architecture, waffle ceiling. The column centres are 6. Projected slab. The advantage of a waffle slab is that it has excellent strength to weight ratio. Answer: Okay, the question isn't complete or correct. Site has been classified as P and a P-H1 class waffle foundation system was recommended from the 1st soil result. يمكنكم التواصل على الفيس بوك : https://www. Basemat foundation models can include pedestals, walls, columns, beams, and . The floor is to be constructed from C25/30 concrete and steel bars having a yield strength of 460mpa. Thickness of Slab3. For instance, the ACI 318-19 specifies minimum slab thickness that satisfies deflection. FEATURES CONCRETE SLAB AND FOUNDATION DESIGN SAFE Design Of Waffle Slab University Of Asia Pacific April 30th, 2018 - Design Of Waffle Slab Without Beams By Direct Design Method 32 32 32 C 1 C 2 C 3 C 4 132 C' www. A Reinforced Concrete Slab is the one of the most important component in a building. 0 ly =20. REINFORCED CONCRETE DESIGN EXAMPLES GEOTECSOFTWARE COM. Refer AS 2870-2011. It appears for waffle slabs the previous mound models are adopted without any modifications. Design the slab using the data given below; Purpose of building – Residential. این مدل میتواند به صورت Slab یا Waffle باشد. The average price is $12. In this course we will design a 15 stories of a residential buildings, within the work we will define and design all types of slabs such as (waffle slab, one way ribbed slab, two way ribbed slab, flat slab and solid slab), all types of foundations such as (isolated,combined,strip and mat), earthquake with static and dynamic case, wind loads . 16m. Waffle pod slabs provide the perfect depth to create holes in the bottom surface. 0 All columns 400 mm sq. 0. 0 of 4 CSI SAFE courses on Udemy. Size. Waffle slabs, or two-way joist concrete slabs, were a popular structural design system for buildings with certain characteristics for a long time. Answer (1 of 2): And as per my observations the usage may depend upon the live load over the slab depending upon whether the load is point load or distributed. A thick top slab finishes the framework. In SAFE, the following principle may apply on the modeling; LONG TERM DEFLECTION – is the sum of immediate deflection for 75% Live load, (DL+SDL+LL) – (DL+SDL+0. E/M. Safe Program. Detailed illustration of analysis and design of flat plate slab using DDM can be found in “Two-Way Flat Plate Concrete Slab Floor Analysis and Design (CSA A23. 5. To implement a better resistance to fire than steel of concrete design. Properties of flat slab. com/groups/274192666279800/ The waffle floor shown in figure 2a & b is required for a shopping mall building. it is mentioned in ACI 435R-95 to use Timoshinko Method for two-way Slabs. Bentley RCDC Connect Edition 11. 0-meter strip both in X and Y direction is recommended to provide for an easier interpretation of the number of rebars after the analysis and design. The design will be done according to Eurocode 2 ( EN 1992-1-1:2004 ). 2) Use ribs with 6 in. Where projects have large spans, with less supporting columns are to be used, waffle slabs are used to bring more ground support as the base is like a ‘waffle’ in design, with supporting pod beams criss-crossing. 🕑 Reading time: 1 minuteContents:Basics of Reinforced Concrete Slab Design1. See more ideas about architecture, slab, concrete structure. 715m long, and it is supporting a blockwork load at 1. The design of the waffle slab depends upon the total area on which the waffle slab is required. The width of the . It is a structural element of modern buildings. A flat slab may be solid slab or may have recesses formed on the soffit so that the sof fit comprises a series of ribs in two directions. A waffle slab gives additional strength in both directions. There are four types of two-way slabs. Video Part 2: https://youtu. You have to compare both the transformed sections and equate each of the moments of inertia. 7, you can use the provisions of Chapter 23 to design using the strut-and-tie model. The ribs are reinforced with steel to resist flexural tensile stresses. Round slab thickness up to the nearest ¼”. Flat Slabs; 3. A Ribbed Slab gives considerable extra strength in one direction while a waffle slab gives added strength in both directions. • Slab: Minimum panel dimension 5h – One-way spanning • Column: h ≤4b and L 3h otherwise it should be considered as a wall • Ribbed or waffle slabs need not be treated as discrete elements provided that: • rib spacing 1500mm • rib depth below flange 4b • flange depth 1/10 clear distance between ribs or 50mm design (D = 460mm) Ym = 53mm was common in recent field inspections in the western suburbs. 3-14)” example available in the design examples page in StructurePoint website. در برنامه SAFE و ETABS امکان تعریف . What is the difference between raft slab and waffle slab? Raft slabs are built on footings secured in trenches, while waffle slabs are built directly on the ground. So, the varying factor here is the floor size, type . 18 Part p plan of flat slab 3. This example focuses on the analysis of flat plates using EFM. The whole footing and slab system is constructed on top of the ground. ) Softwares; Architecture Interior Design Books; Bridge Engineering Books Bookmark File PDF Design Of Waffle Slab thorough reference to, and application of, EN-Eurocode 8. Direct Download. structural design 2 ribbed (joist), hollow pot & waffle slab design to bs 8110 @mr. Furthermore, to deduct the value of displacement to make it come under the safe limit we introduced the outer columns and drop panels in the design. Prefabricated waffle slabs for span. Ø Waffle slab. You must get the 1980 or 2002 CRSI Manuals to review their calculations procedures and adjust it to your overhang condition. 12) and the cost ratio decreases as the span length increases. A B Bb C 4. Detail Download The design of the waffle slab depends upon the total area on which the waffle slab is required. The ACI 318-19 provides a number of requirements regarding slab thickness, concrete cover, and reinforcement ratio which facilitate the design process. youtube. Example 1 The floor of a building constructed of flat slabs is 30. Flat Slabs and Waffle Slabs This book is intended to guide practicing structural engineers familiar with ear lier ACI building codes into more profitable routine designs with the ACI 1995 Building Code (ACI 318-95). org STRUCTURAL ENGINEERING FORUM OF INDIA [SEFI] Follow @sefindia Subscriptions Digest Preferences FAQ Search Memberlist Usergroups Digest Preferences never miss a big offer or sale subscribe to mailing list & get 10% discount Please Add modules or tools for modeling , analysing and designing of waffle and prestressed slabs - formwork - Reinforcement. Nimmer Loris Collavino William C . The design of one-way slab is simple and can be carried out easily. One way Hardy Slab; Two way Hardy slab; Waffle slab. 5 مگابایت . Preliminary sizing of the floor has been carried out by selecting a suitable mould and the slab dimensioned as shown in the figures. 1. In the present paper,the optimum dimensions of post-tension concrete (two-way ribbed) waffle . Thank you. Effective Span of Slab2. Slab Reinforcement. 5m of waffle slab, and is to support an imposed load of 5 kN/m 2, design an interior panel of the waffle slab, and a supporting beam. The main function of a raft foundation is to spread the load of the building over a large area. It's typically used when stiffness is important or if there are abnormally heavy loads. 2-The most cost effective way of production even the demand is very low. اسم فایل Waffle_Tutorials_ [Etabs-SAP. Category 2 damage to internal walls and cornices was noticed. صفحه نخست - فروش قالب وافل و اجرای سقف وافل • Slab: Minimum panel dimension 5h – One-way spanning • Column: h ≤4b and L 3h otherwise it should be considered as a wall • Ribbed or waffle slabs need not be treated as discrete elements provided that: • rib spacing 1500mm • rib depth below flange 4b • flange depth 1/10 clear distance between ribs or 50mm The four slab designs are bays with dimensions of30’ by 27’ (9m by 8m), 30’ by 23’ (9m by 7m), 27’ by 23’ (8m by 7m) and 23’ by 17’ (7m by 5m). Decide the type of slab according to aspect ratio of long and short side lengths. com-2022-03-03T00:00:00+00:01 Subject: Design Of Waffle Slab Keywords: design, of, waffle, slab Similar to the flat slab option, but with added formwork complexity around the building perimeter and potentially adverse effects on the facade design/architecture. With some fudging regarding weight etc, you can probably just use whatever software you've got. BECOME A MEMBER VIEW DOWNLOAD LINKS. To Study the structural behavior and optimum design of Waffle Slab To show that for more than 25m span, Prestressed design is economic To compare the results up to what span R. GASTAL AND L. Waffle_Tutorials_ [Etabs-SAP. Now brought up to date with a wealth of new material on computer optimization, the equivalent frame method, lateral load analysis, and other current topics, the new edition of For a house, raft slab cost can be anywhere from $45,000 to $65,000 on average. f ck = 30 Mpa, f yk = 500 Mpa. . Following the publication of EN-Eurocode 8 in 2004-05, 30 countries are now introducing this SAFE 14 (Integrated Design of Slabs, Mat and Footing) software results will be taken into consideration for R. 0 6. Models can have columns, braces, walls, and ramps connected . SAFE provides unmatched benefits to the engineer with its truly unique combination of power, comprehensive capabilities, and ease-of-use. 3 8. this video was lectured by prof. As we commonly encountered in the design, DL stands for dead loads, LL designates the live loads and SDL denotes superimposed dead loads. The direct design method. 3. There is a difference between the thickness of the concrete used. The design will be done according to Eurocode 2 (EN 1992-1-1:2004). مثلاً . The formulas are presented below; Two-way slab (ly/lx < 2) Long span: p = nlx/2 (1 – 1/3k2) Short span: p = nlx/3. This states that “ Openings of any size shall be permitted in the slab system is shown by analysis that all strength and serviceability requirements, including the limits on deflections, are satisfied”. 0 m. The volume of concrete required is less as compared to others. Beginning in 1956 with the introduction of ultimate strength design, each new code offered better uti lization of high-strength reinforcement and the compressive strength of the con crete itself. 5 νfcd Punching Shear Reinforcement Cl. The Equivalent Frame Method (EFM) presented in ACI 318-14 is illustrated to analyze and design two-way waffle slab system. w =2. Fri Jul 12, 2019 9:38 am. 25 d ≤ fywd (MPa. C. Edition 1 – November 2020 General Information Architectural considerations and advantages Structural considerations and advantages Coffer slab design: Page 02 Page 03 Page 04 . To come up with a cast to take the shape required so as to make it widely used in precast . Minimum Reinfocement Criteria For Crack Control. The practice of using a modifier <1 for torsional constant is for monolithic construction involving combability torsion, which is due to the transfer of negative moment from slab end to the supporting beam (you do not . 5 m Given:- Ly = 7. Ahmad Traboulsi ETABS & Safe course 10 Story 1 Waffle Slab Type 1 • Two Way • We use waffle slab when we have long spans and high live load • Spacing between ribs above 1m and below 2m • Loads: 1. Reinforcement for Slab4. فایل جامع و بسیار مفید در زمینه طراحی سقف های وافل Waffle slab نویسنده: عبدالمهدی عباسی Waffle_Tutorials_ [Etabs-SAP. Hardy slab. It is robust, fire resistant and has good thermal mass. طراحی سقف وافل Waffle Slab. RCC Slabs whose thickness ranges from 10 to 50 centimetres are most often used for the construction of floors and ceilings. Oct 4, 2019 - Explore Arun Prabakaran's board "waffle slab" on Pinterest. use k =1,if slab is discontinuious over supports, otherwise use k =2, for slab is continuious over supports use k =3, for slab is cantilever use j = 0 if design of slabs are to be continued otherwise use j= 1 fck =25. حجم ۱۰٫۵ مگابایت. To come up with a relatively high compressive strength of concrete design. The limits of motion that a safe transfer can take place from the literature were compared with those of a basic standard catamaran design, and were then used to assess novel designs. Nov 27, 2015 - Explore Mirna Ashraf's board "Waffle slab", followed by 138 people on Pinterest. Wed Feb 17, 2010 1:11 pm. 5 design methodology 1. CE 433, Summer 2013 Slab Design Example 1 / 5 Design a one‐way slab for an interior bay of a multi‐story office building using the information specified below. look guide design of waffle slab as you such as. a) Effective span of slab: Effective span of slab shall be . The clear span are between 4m and 6. 0m from the fixed end. In this post, we are going to show how we can analyse and design cantilever slabs subjected to floor load and block work load. A H2 slab uses a 300mm pod with 100mm thick concrete above. There are two types of waffle slab system: One way waffle slab system; Two way waffle slab system. …. Recommended thickness is 85 to 100 mm and the recommended depth of slab is limited to 300 to 600 mm. ) Softwares; Architecture Interior Design Books; Bridge Engineering Books The results showed that For waffle slab with solid heads, the ratio of effective depth to span length (d /l )should be (1/28 to 1/19) to get the optimum design, while for waffle slab with bandbeams along columns centerlines, it should be (1/33 to 1/18). Internal rib width - 110 mm (300 . M site , budget for 95 -100 per m2 for waffles assuming its reasonably close to a concrete plant. It’s critically important to get them right – both for safety and economics. فایل جامع و بسیار مفید در زمینه طراحی سقف های وافل Waffle slab. در این برنامه امکان اختصاص سقف وافل وجود دارد و برنامه متناسب با آن وزن و و حجم و مشخصات مشخص می شود. S. Easily model soil supports and zero tension soil models with uplift analysis. 12). as done by Csi Safe software for example. 2 metre nominal centres running each way through the slab. Construction process. 1 introduction 1. 4 sizing of slab and ribs 1. SILVA F° 2009 IBRACON INTRODUCTION The design with the aid of computer programs is almost essential, mainly because of the rate imposed by structural design contractors and the request to evaluate the various . CALUCLATIION SHEET REINFORCED CONCRETE SOLID SLAB DESIGN TO EUROCODE 2 Date:01/09/2014 Rev:B Calculated by:VN Checked by:VN Loads: Characteistic permanent action: Gk 6. 0 od =90. C. When compared with conventional concrete slab, the waffle slab require only 70 percent of the concrete and the steel required is 80%. The ratio of longer span (l) to shorter span (b) is equal or greater than 2, considered as One-way slab. Provided width of the beam is normally 110 to 200 mm. have designed three models each of single column multi-storied building with flat slab and waffle slab to do the complete analysis of the design. 5m The ratio of the total costs was found to be within the range (1. |توسط admin. Title: Design Of Waffle Slab Author: buenosaires. The issue with waffle slabs (you dont state what type yours is) is there are large sections of it poured over foam blocks. Depending on the boundary condition and the properties of the slabs, methods of finding bending moment is expressed in the BS 8110 Part 01 as follows. Re: suspended slab and waffle pod slab pricing? 7. · Analysis and Design of Slabs. Based on your dome data, void volume and top slab thickness their is an "average equivalent slab thickness". Two-way slab design procedure by the Direct Design Method. Prepared for the PCI Hollow Core Slab Producers Committee John E. The rectitude of the SAFE is the ultimate tool for designing concrete floor and foundation systems. به گونه ای که در . 1-The most known and known type of waffle moulds. 1 Actions kN/m2 . A cantilever slab 200 mm thick is 1. 200 + Patch; AutoCAD Architecture 2023 Download; AutoCAD 2023 Download; CSI Bridge v 24 (2022) SAP2000 v 24 + Crack (2022) Why do we need waffle slabs. Reinforced waffle slabs can be constructed for the span up to 16 meters while beyond that length prefabricated waffle slab is preferable. 02. The information given in this Concrete Design Guide regarding the design or the method of designing the reinforced concrete elements, may change without prior notice. The panels are to have drops of 3. paddingtongreen , in my case the loads is normal and not that much as urs Where is waffle slab used? These can be used in both floor and ceiling slabs. Hi all. zip. The design strips feature of SAFE helps the designer to calculate the number of rebars needed in the slab in addition to basic mesh once the slab has been analyzed. The shrinkage value is smaller that rafts and the footing slabs. 5 . The ratio of the total costs was found to be within the range (1. 10pcs production can be applied profitably. In the prelim slab design report - The following was recommended. 4. 5m x 7. Concrete Slab Design ProcedureDesign of Continuous Slab Basics of Reinforced Concrete Slab Design Slabs are generally designed on the assumption that they consists of a number of beams of breadth ‘one meter’. The minimum thickness can be determined by many factors: • Shear strength of beamless slabs (usually a controlling factor); slab must be thick enough to provide adequate shear strength The issue with waffle slabs (you dont state what type yours is) is there are large sections of it poured over foam blocks. Here, we have tried to gather various reading materials available in the web about flat slab floor system in one place. Recent Posts. Now you have a safety issue. Recommended spacing of ribs is 600 to 1500 mm. Abstract In this research, optimum design of reinforced cement concrete (RCC) ribbed slab, also known as waffle slab. The width of beams or ribs provided in waffle slab are generally 110 to 200 mm. SAFE – Approxi- mate Quantities Form Waffle slabs, or two-way joist concrete slabs, were a popular structural design system for buildings with certain characteristics for a long time. Conventional RCC Slabs are done with respect to its design and construction aspects. l_vanslyke. 6 200 x 200 hole Figure 3. I design too many building starting from villas & steel warehouse @ factory & multi floor buliding and high rise tower. Check the limitation to use the DDM in ACI Code. These slabs use specific concrete quantities. Low roof slab. Then equate that weight to weight of a equivalent slab (same plan dimensions) and calculate the required depth. Hi everyone, The builder I am intending to build our first home with is suggesting to leave the slab exposed for about a month before putting the house frame on. Slabs are defined as two-way slabs when the ratio of long-to-short sides is less than 2. Openings in the slab system can be found on Section 8. The slabs were instrumented at critical locations to measure strain with fiber-optic sensors (FOSs) attached to the surface of the GFRP bars or embedded in concrete. A raft foundation is also known as an engineered slab or a mat foundation. The design of waffle slab is done in such manner so as to achieve better load distribution. 1 hollow pot slab OVERVIEW. Grads Slab/ Slab on grade. A 1. What this means is if a concentrated load like a bottle jack or a leg cracks the concrete, it could punch through and instantly drop 150mm. 3-Has a limited design elasticity, no problem what you need. 1. 1 21kN m Design bending moment at short span - middle . In . The floor slabs are at 4. Good Luck. 3 Short span: Design bending moment at short span - continuous support: Mx. The area assignment of soil supports is based on the subgrade modulus, and they automatically adjust whenever the mesh changes. And currently there is a 48% discount on the original price of the course, which was $24. This form of construction is used in airports, parking garages, commercial and industrial buildings, residences and other structures requiring extra stability. Once the shape gets drugged-up-architectural-crazy or with lots of vertical steps and set-downs for wet areas, they become more difficult to design and construct. at any location along the depth. RESEARCH PAPER II Numerical and Experimental Study of a Real Scale Waffle Slab P. Waffle slabs are a reinforced concrete footing and slab systems constructed on the ground. Not long ago, I've received the 2nd soil and compared against 1st. H20 beams must be placed according to waffle dimensions and grid area. f ck = 25 . L. نویسنده: عبدالمهدی عباسی. For that purpose, calculate the weight of a waffle by considering centreline between two ribs - calculate the weight of that section for a unit length. never miss a big offer or sale subscribe to mailing list & get 10% discount www. Then waffle moulds are ready to be placed on H20 beams. This type of foundation is more rigid and performs better on . e. A suitable mould release agent applied on the mould surfaces after the placement. 3-04 5-Design for . 1 . Slab reinforcement - SL92 4. asish seeboo 1 lecture 4: 1. 6 300 mm flat slabs 8. By searching the title, publisher, or authors of guide you really want, you can discover them rapidly. See more ideas about architecture, interior architecture, waffle ceiling. Check out more on a concrete house slabs service page. Check the applicable joist dimensional limitations as follows: 1) Width of ribs shall be at least 4 in. The PDF covers the following topics: Introduction. نکاتی در مورد طراحی سازه های با سیستم سقف دال_مشبک ( وافل - Waffle ) این نوع سقف به نوعی سقفی با سیستم دال و تیرچه های دوطرفه است که وافل ( Waffle ) نامیده میشود. The slab is 300 mm thick and columns are 400 mm square. The waffle footing system shall be designed for the site's reactivity by an experienced engineer. Foundations - EDC. Due to its comparative light weight, it saves on the cost of the foundation. yr. The scope of the study includes analysis and design and comparison of waffle slab, flat slab and conventional slab system. The four slab designs are bays with dimensions of30’ by 27’ (9m by 8m), 30’ by 23’ (9m by 7m), 27’ by 23’ (8m by 7m) and 23’ by 17’ (7m by 5m). P. Another method would be to model in Safe and export back to ETABS. A civil engineer with good practice may help you more about this :) Design of flat slabs by IS: 456 The term flat slab means a reinforced concrete slab with or without drops, supported generally without beams, by columns with or without flared column heads (s ee Fig. A H1 slab uses a 300mm pod with 85mm thick concrete above. This example highlights code based selection of rib and drop head dimensions, analysis process of non-prismatic slab due to the presence . A civil engineer . 5m. Concrete is C30/37. Ribbed floors comprising of . SAFE is the ultimate tool for designing concrete floor and foundation systems. I like to debate structural engineering theory -- a lot. Waffle slab is good against shrinkage and it is lower than stiffened rafts and footing slabs. Waffle Slabs (Conventional RC) Introducing voids to the soffit of a flat slab reduces deadweight. Waffle Slab Story 1 and 2 Ribbed Slab Story 3 Flat Slab Story 4 Solid Slab from story 5 to 16 Story 1 Waffle Slab Type 1 Eng. 5m Lx = 7. My first stop is always the CRSI manuals if they can be made to apply. ecover=4. have experience in design concrete and steel structure. The use of waffle slabs speeds up . 2 presentation of ribbed floor plan 1. The results obtained from the method are usually very conservative. Slabs-Beam System. A flat slab is How much does the CSI SAFE 2016 structural software from A to Z course cost? Is it worth it? The course costs $12. Waffle Slab is economic To check weather it is safe to provide minimum depth of slab design of waffle slab system Leave a Comment / Civil Books Platform , Excel Spreadsheets Engineering / By admin The design concept of waffle slabs is similar to that of ribbed slabs , with the difference being that waffle slabs have ribs spanning in both directions, and the coefficients used for analyzing the slab are similar to those used for two-way restrained slab Maximum Span. All Autodesk (BIM, AutoCAD Revit etc. This modular formwork is mainly oriented towards non-residential construction and is . 6 summary 1. 52 8. The slab heads or band radiates are similar profundity as the ribs. Waffle box height - 300 mm 2. There is two conditions that should be satisfied to use the above table. 11 replies. α = angle between the shear reinforcement and the plane of slab fywd,ef = effective design strength of the punching shear reinforcement, = 250 + 0. Nov 7, 2018 - Explore Monika Tylutka's board "Waffle slab" on Pinterest. And this is possible only in monolithically cast concrete which is the two-way grid of beams. I noticed that even Site classification remains unchanged as P, they have updated their recommendations for slab to M class waffle foundation , instead of H1. Triangular pod system; Square pod system; Dome slab. Many of these slabs also contain numerous amounts of electric and tele-com conduits buried with in the slab. However, reading the above Commentary section R22. The 1. Environmentally Friendly. Design of the slab systems are done for different spacing/ grid size of column to find out which grid size of the column . 35 modifier for torsional constant. sefindia. Reinforcement Cover 5. 2. سقف وافل یا شبکه (Waffle Slab) نوعی از دال‌های دو طرفه می‌باشد که از تیرچه‌های بتنی متعامد تشکیل شده‌ که با دالی به ضخامت ثابت پوشیده می‌شود. 99. The most common type of slabs used in the construction industry is the flat slab. Format. See more ideas about slab, architecture, structure architecture. 6. The design of various slabs in the entire building is done by standard design steps from the IS 456-2000. Therefore, you need to use thick but light slabs running between wide beams. The thickness of the waffle slab is generally range from 80 mm to 100 mm. 2 Objectives of Study. When you need to have a clear area in a large room, that is, you cannot use columns in the middle of the room (like in a theater), there you have to use long, strong slabs to hold up the roof (or the upper floor). Sunken Slab . A waffle slab design really isn't all that different from a flat plate design. MP4. Following the publication of EN-Eurocode 8 in 2004-05, 30 countries are now introducing this The results showed that For waffle slab with solid heads, the ratio of effective depth to span length (d /l )should be (1/28 to 1/19) to get the optimum design, while for waffle slab with bandbeams along columns centerlines, it should be (1/33 to 1/18). 0 4. Codes used IS456:2000 for plain and reninforced concrete IS875 part 2 dead loads SP16 design handbook for IS456 Okay 5. The thickness of a floor slab must be determined early in design because the weight of the slab is an important part of the dead load of the structure. Slabs are supported on Columns and Beams. lx =20. facebook. If you want to download and install the design of waffle slab, it is totally easy then, past . 1 hollow pot slab Design Example A church building has a square grid of 7. Post tension slab. So you save $12 if you enroll the course now. ) Book; All Autodesk (AutoCAD, Revit Robot. 0 m in both directions, and the building is braced with shear walls. Pre tension Slab. The rectangular waffle slab cocktail tray is made from cast, pigmented, food safe Eco-resin with solid brass handles. Equilibrium frame method. Programming in EXCEL will be done to obtain the results for various spans for different elements of waffle slab. A 2 hour fire rating is required. 0 D 1 E 200 x 200 hole 8. Waffle slab cost is more likely to be in the range of $35,000 to $55,000. Waffle Slabs; 2. Does anyone know how it is designed? If I can get any reference document it be helpful. 79 MB. A waffle slab can be made in different ways but generic forms are needed to give the waffle shape to the slab. you will see the following steps:Define Units and Design Code . Critical . For details of waffle mould, see details of technical data sheet. Waffle Slab Modeling Tutorial in ADAPT-Floor | Sipilpedia . Hope this points you in the right direction. Suspended slabs can include flat, two-way, waffle, and ribbed framing systems. 10 -2. As a result, the pressure on the ground is lowered significantly. The EFM solution is also used for a detailed comparison with the analysis and design results of the engineering software program spSlab. After the assembly of base plates for main beams, H20 beams must be placed on slab area. SLABS. building code requirements and design procedures for slabs, Reinforced Concrete Slabs, Second Edition provides a full treatment of today's approaches to reinforced concrete slab analysis and design. The comparison of various slabs i. The depth of the drop panel is 250 mm and the slab depth is 200 mm. Bookmark File PDF Design Of Waffle Slab thorough reference to, and application of, EN-Eurocode 8. In waffle slab, separate excavation for the beam is not required. 4. 8. Tech) · Analysis and design of Foundations. SAFE provides unmatched benefits to the engineer with its truly unique combination of . com/watch?v=zq0YbxzFN_I&list=PLDyhMW3kzPDAOR0UYuJaFNxv0e3cPlcUH RCC 2 way . 6 GHz antenna with the GSSI SIR 4000 head unit is used by our technicians to . 4-Can be produced and modified easily by hand. This study provides details on the design, construction, and performance of GFRP-reinforced-concrete (GFRP-RC) flat slabs under real service loads and conditions over 3. Then iron structure can be formed by spinning. Previous mound models are based on slab in full contact with the soil at the edges. 5 years. They consist of a perimeter footing (edge beam) and a series of narrow internal beams (strip footings) at 1. Nov 27, 2015 - Explore Mirna Ashraf's board "Waffle slab", followed by 145 people on Pinterest. be/OZJ0UwR2CHA Etabs Complete tutorials: https://www. 00. Design Tables Form Design menu > Show Total Quantities Displays the slab area, concrete volume, and de- signed steel weight calculated by the program. 3 advantages & disadvantages of ribbed slab 1. Flat slab system is an important division of concrete floor system. Engineering 101. com/groups/274192666279800/ 1. Determination of bending moment and shear force. ir]. The overall depth of the waffle slab is limited to 300 mm to 600 mm. International Design Codes – Whether the project is local or overseas, design codes from around the globe are available for reinforced concrete and post-tensioned slab design. com-2022-04-19T00:00:00+00:01 Subject: Structural Design Of Waffle Slab Keywords A waffle slab gives additional strength in both directions. نرم افزار های طراحی سقف وافل waffle slab design. Concrete f'c = 210kg/cm2, fys= 5000 kg/cm2, The live load is 250 kg/m2, SuperDead 250 kg/m2 and obviously the self-weight is calculated by the software. zip اسم فایل Waffle_Tutorials_ [Etabs-SAP. CONCRETE SLAB AND FOUNDATION DESIGN SOFTWARE SAFE. 9. نرم افزار های طراحی safe و etabs می باشد. Download Method. The purpose of the study is to compare the design of a plastic voided slab to the design of a traditional two-way flat plate slab. Some of the formulas can be obtained from Reynolds and Steedman (2005) for transfer of load from two-way slab to beams. Solved Example. It is light and relatively flexible. × Close . Now brought up to date with a wealth of new material on computer optimization, the equivalent frame method, lateral load analysis, and other current topics, the new edition of A thick top slab finishes the framework. Yehia Temsah @BAU in this lesson we are going to design and detail the waffle slabs using Csi Safe 2016. The minimum amount and spacing of reinforcement to be used in structural floors, roof slabs, and walls for control of temperature and shrinkage cracking is. The Waffle slab have good resistance against shrinkage. The first stage of the design is finding the bending moment of the slab panels. In this course we will design a 15 stories of a residential buildings, within the work we will define and design all types of slabs such as (waffle slab, one way ribbed slab, two way ribbed slab, flat slab and solid slab), all types of foundations such as (isolated,combined,strip and mat), earthquake with static and dynamic case, wind loads, columns and beams and shear walls + Advanced . Love to learn new thing always and the most common practice to design any reinforced concrete slab is to start with the selection of slab type (one-way slabs, two-way slabs, waffle slabs, flat slabs, or pre-cast or pre-stressed slabs) [1]. SAFE – Approxi- mate Quantities Form In this post, we are going to show how we can analyse and design cantilever slabs subjected to floor load and block work load. Thickness is . Waffle Slab (Two-Way Pan Joist) Two-way joist slab, also called a waffle slab. The concrete grid slab is often used for industrial and commercial buildings while wood and metal waffle slabs are used in many other construction sites. Preliminary waffle raft design is suggested. This type of foundation is used to provide the support for columns and load-bearing walls. width. This makes the installation of various systems easier and less time-consuming. Re: H1 slab for H2 class soil. Assume partitions cannot be damaged by deflections. Pitch roof slab. the following table can be referred. 0 m x 24. A typical 14-story RC building structure is . I can give you some design insights. Flat Slab and Waffle Slab in one form (with or without outer column) have had noticeable effect in the properties of the multi-storied building design, enabling its utilization for different purposes of the building. در هر صورت به دلیل تفاوت در وزن و سختی این گزینه ها با مقدار مورد نظر برای دال مجوف ، باید به نحوی این اختلاف از طریق تغییر در بار مرده سقف و ضرایب اصلاح سختی ، اصلاح گردد. this does not include pump or required piering. ) d = mean effective depth of the slabs (mm) V v v u d Ed Ed Rd,max 0 β Max. One Way Slab: One way slab is supported by beams on the two opposite sides to carry the load along one direction. 4 of ACI 318M-14. If limitations are not met, the DDM can not be used. spendmatters. foor ,simply supported by Beams around its 4 sides just today i found out that i used wrong method (grashoff) which gives unreasonable deflection. Example on Structural Design of Waffle Slab . We do quite a few waffle pod slabs ranging from H1 to H2. shear stress at column face, = ≤ = 0. This is essentially why . The formwork is made up of many elements: waffle pods, horizontal supports, vertical supports, cube junctions . We can assume “two-way slab action” for the design of the other slabs like two-way slab with the hollow block, waffle floor (slab with joist beams) made of the precast double-tee section, waffle floor with hollow-block or hollow-cored slabs, Two-way . The total depth of the waffle slab is 30 cm, the rib width is 10 cm and its height 25 cm, the slab thickness is 5 cm, the spacing of ribs is 50 cm from . MANUAL FOR THE DESIGN OF HOLLOW CORE SLABS SECOND EDITION by Donald R. One-way slab (ly/lx > 2) Long span: p . Thin concrete slabs are also used for exterior . Because there are joists in both directions, this floor system is the strongest and will have the least deflection. These slabs are economical in spans up to 14m in square panels. Is it safe to jack up cars on these slabs ? I've heard the stories of people driving into their new home and having the car fall right through the slab. From framing layout all the way through to detail drawing production, SAFE integrates every aspect of the engineering design process in one easy and intuitive environment. This paper deals with the comparative study of Waffle slabs with flat slabs and conventional RCC slabs and highlights the advantage waffle slabs have over flat slabs and RCC slabs . 5. Determine and assume the thickness of slab to control deflection. Builder's point is that leaving the slab longer without putting the weight, on allows it to settle down well. F. The ribs are formed due to the pouring of concrete over a set of plastic waffles arranged in series on the ground. In the house, workplace, or perhaps in your method can be every best area within net connections. A church building has a square grid of 7. Maximum Span. Ø L-Footings [Supports and columns] Ø . I was thinking of using some. Ball park figures here to, without seeing the site or design one cannot give an accurate set price. Why do we need waffle slabs. Slab depth - 85 mm 3. (b) A flat slab which is the same as a flat plate except the areas around the columns have increased thicknesses, called . Hollow core ribbed slab. Reference [5] focused on analysis of two-way ribbed slabs with . Do not use 0. Waffle slabs will in general be more profound than the same ribbed slab. Zekirija Idrizi and Isak Idrizi (2017) compared a solid and a waffle slab system. according to the Indian RCC code (IS 456:2000) is presented. E/B. ACI 318-14 (9. در: طراحی دال مجوف (وافل) 875بازدید. V. zip حجم 10. Waffle slabs have a dainty fixing slab and restricted ribs spreading over in the two ways between segment heads or band radiates. org STRUCTURAL ENGINEERING FORUM OF INDIA [SEFI] Follow @sefindia Subscriptions Digest Preferences FAQ Search Memberlist Usergroups Digest Preferences Each new ACI Building Code expresses the latest knowledge of reinforced concrete in legal language for safe design application. Ø Two-way slab. Greater than 16m. There are two types of waffle slab system: One way waffle slab system; Two way waffle slab system; Construction process. Module-2 (Eligibility: B. Concrete floor systems are designed to span in either one direction (one-way) or both directions (two-way) of a structural bay. 5, Equ6. A civil engineer must know all the aspects regarding the flat floor system. 0 ribbed slab 1. 25kN m 2 Characteistic variable action: Qk 2kN m 2 Quasi-permanent value of variable action: ψ2 0. In comparison to the solid slab, the span limits of ribbed slabs are considerably longer. Doing that minimizes the risk of slab . e in the direction along its shorter span. 50 m vertical centres. DESIGN OF RCC SLAB – SIZE = 7. They can be quite good on “ cut and fill ” sites where we need to put piers down to a stable stratum.


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