حساب long term deflection

HOW TO CALCULATE LONG TERM DEFLECTION USING SAFE 12. Watch later. Share. Copy link. Info. Shopping. Tap to unmute. If playback doesn't begin shortly, try restarting your device. Up Next Cancel. Autoplay is paused. You're signed out. Videos you watch may be added to the TV's watch history and influence TV recommendations. To avoid this, cancel and sign in to YouTube on your. فى الفيديو ده هنتكلم عن كيفية حساب الترخبم الكلى للقطاعات مانيوال باستخدام معادلات الكود المصرى و باستخدام.


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+0.25LL) and Long-Term Deflection for DL+SDL+25% Sustained Live Load. Which means: Long-term Deflection = 75%LL (immediate effect) + 25% LL+DL+SDL (long-term effect) ما هي الفائدة الكبيرة العملية لأداة حساب ltd في برنامج step ؟ شاهد كل هذا و أكثر من خلال الفيديو التالي لمثال عملي تم فيه استخدام البرنامجين SAFE و STEP و مدى تطابق النتائج بين البرنامجين This is based on 50% compression reinforcement ratio. RE: Long Term Deflection Estimates. IDS (Civil/Environmental) 7 Oct 15 01:16. A reasonable estimate would be to calculate deflections using short term cracked section properties, including tension stiffening, and multiply by 3

Based on the adopted reinforcement, PT3D will evaluate Ieff in each point, in both orthogonal directions and will calculate the short-term deflections based on the reduced section properties. The long term deflections are evaluate using Kcs factor, and increased load factors. Arguing with an engineer is like wrestling with a pig in mud 1 -short term deflection ده بيحدث نتيجه التأثير الفورى للاحمال على المنشأ من لحظة فكة الشدات و بدأ تحميل المنشأ . 2 -long term deflection ده بيحدث على المدى البعيد نتيجه حدوث creep وحدوث shrinkag There are basically two type of deflections: 1. Short term deflection 2. Long term deflection. Short term deflection: One which is caused immediately when the structure is loaded and that is the one that we calculate using deflection equations for various types of members with various types of loading.It includes all the dead loads and live loads considered for the design of that structural. برنامج اكسل لحساب الدفلكشن - Check Of Defkection تحميل Check Of Deflection المتابعون الأقسام الأكثر زيار

97-Check long Term Deflection on Safe مقارنه الترخيم

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13.4. Consideration of Long--Term Deflections -- Creep and Shrinkage • Deflectionduetoshrinkagecomessoonaftercasting(majority)withlongtermshrinkagedepen-dent on environment. • Deflection due to creep is proportional to stress level and concrete characteristics. Code method for calculating long term deflections: (ACI δ total =

Check Total Deflection Long Term+ Short Term Manual and by

  1. Chillin deflection - arrow - The Egyptian code identified three statuses to verify the restoration as follows: 1-Long-term restoration: for cameras and tiles, as shown in picture No. 1 2-Short-term chilling (momentary chilling) caused by live loads, photo No. 2 3-Loss caused by dead loads only (after finishing and wall work) Photo No. 3 Some codes required a certain proportion of live loads to be considered ′′ at least ′′ as a continuously applied load Some considered 25 % and others.
  2. The value of total long-term deflection is then the combination of; Case 3 + (Case 1- Case 2)
  3. من طرق حساب قيمه الترخيم 1- طريقه التكامل المزدوج (double integration) 2- conjugate beams 3-virtial work 1 -short term deflection 2 -long term deflection ده بيحدث على المدى البعيد نتيجه حدوث creep وحدوث shrinkage

Long Term Deflection Analysis using SAFE Program The

‫كيف أحل مشكلة Long term deflection - Genius Structural

7.17.2 Short- and Long-term Deflections As evident from the names, short-term deflection refers to the immediate deflection after casting and application of partial or full service loads, while the long-term deflection occurs over a long period of time largely due to shrinkage Version 2 CE IIT, Kharagpu Long-Term Deflections calculators give you a list of online Long-Term Deflections calculators. A tool perform calculations on the concepts and applications for Long-Term Deflections calculations. These calculators will be useful for everyone and save time with the complex procedure involved to obtain the calculation results the theoretical deflection can be assessed using the expressions given in the Code. The span-to-effective-depth (L/d) method. In simple terms, the current EN1992 L/d method means verifying that: Allowable L/d = N x K x F1 x F2 x F3 ≥ actual L/d. where. N =

With an increase in time, the long-term deflection values for the RL30-0.5ω beam are lower than those for the C30-0.5ω and RH30-0.5ω beams, and the ratios of the long-term deflection to the instant deflection at 380 days are 1.07, 0.98 and 0.95 for the C30-0.5ω, RL30-0.5ω and RH30-0.5ω beams, respectively. Download : Download full-size imag حساب أحمال الزلازل و الرياح طبقاً للكود المصري 2011 - م. محمد عنتر 22 مايو، 2020 5 Long-term deflection obtained as a multiple of short-term deflection and creep coefficient. Two-step process: linear calculation + input of reinforcement (can be calculated automatically) + calculation of cracks and their effect on stiffness. calculation with modified stiffness. In order to calculate the long-term deflections in concrete, you.

RE: Long Term Deflection Estimates. KootK (Structural) 13 Oct 15 04:18. @Trenno: 1/2_rho_b = a reinforcing ratio of half of the balanced reinforcing ratio. @rapt/IDS: Consider two mildly reinforced beams where the following is true: 1) All parameters are identical except the reinforcing ratio and beam depth Dear Colleagues This is to share with you my findings regarding this issue:In order to find the long term deflection according to ACI318-08 considering the Creep and Shrinkage effects the following tips have to be followed using the SAFE v12: 1- Define Load Patterns for Dead Load (DL), Super Imposed Dead Load (SIDL) and Live Load (LL) Long term deflection calculation requires the section to be considered as a cracked section, for which an effective moment of inertia (which is in the range of Icr to Igross) is a function of cracked moment and service moment. However, Bentley systems has another structural design tool called RAM Concept, in which the long term deflection.

Long Term Deflection Estimates - Structural engineering

Long Term Deflection & Compression Reinforcing - AS/NZS

  1. 4.1 Mid-span deflection. To calculate the mid-span deflection, we substitute into equation 23 giving us, Now that we have a complete definition of the deflection in the beam, we can plot it to get a better sense of the deflected shape. Fig. 5 below shows a plot of the internal bending moment and the deflected shape
  2. imum thickness for beams as a function of the spa
  3. The long-term deflection of plastic pipes installed deep in the ground is always a concern for sewerage engineers. According to the Modified Spangler's equation, flexible pipe deflection is a function of pipe stiffness. Therefore, the long-term deflections of HDPE pressure pipe, PVC jacking pipes, and ABS jacking pipes under th
  4. Long Term Deflection is available for Concrete Floor Slabs using Design Method: User Defined. With Long Term Deflection turned on, the program will automatically adjust the plate stiffness by adjusting the Moment of Inertia to be I e (ACI-14 This stiffness adjustment is an iterative analysis per plate based on the global axis
  5. Fig 2-9: Multipliers for long-term deflections (used with permission from ACI 318-08) Fig 3.1: Slab section point supported, I = 512 in^4 . Fig 3.2: Slab integrally built with columns . I = 10245 in^4 and 5120 in^ 4 . Fig 3.3: Alpha as a factor of deflection for exterior span vs. span ratio
  6. Long-term static load tests were carried out on simply supported and continuous reinforced concrete beams at the N.S.W. Institute of Technology, Sydney, Australia. The instantaneous and time-dependent beam deflections were recorded, together with the time-varying strain distributions at selected cross-sections and the redistribution of bending.
  7. Check 'long-term deflection' translations into Arabic. Look through examples of long-term deflection translation in sentences, listen to pronunciation and learn grammar

‫deflection أو الإنحراف الترخيم

What is the long term deflection? - تخصصات بيت

Long-term deflection is a critical criterion for evaluating the workability and safety in designing reinforced-concrete structures. As the use of refined ultimate state theories and high-strength materials increases, structural members are designed with significantly thinner sizes and longer spans The terminal long-term deflections of PROT_125, Test 1, Test 2, PCB2, PCB4 and PCB5 caused by the concrete shrinkage are 0.57 mm, 0.23 mm, 0.27 mm, 0.36 mm, 0.19 mm and 0.37 mm, respectively, which are about 9.8%, 9.1%, 24.5%, 9.8%, 6.4% and 8.2% of their total long-term deflections. So, the long-term deflections due to concrete shrinkage could. The long-term deflection of Long Span Prestressed Concrete Box-girder Bridge (LSPCBB) is getting more and more serious in terms of structure safety. And there are still many ambiguous reasons as to the cause of the deflection of LSPCBB

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برنامج اكسل لحساب الدفلكشن - Check Of Deflectio

Video: 3-Check Total Deflection Long Term+ Short Term Manual

likely to be damaged by large deflection L/240 *** Notes: * Limit not intended to safeguard against ponding. Ponding should be checked by suitable calculations of deflection, including added deflections due to ponding of water, and considering long-term effects of all sustained loads, camber, construction tolerances, and reliability o 3. For the calculation of deflection due to imposed loads, the deflection may be taken as assuming 2/3 of the applied load is a short term load and 1/3 is a long term load. 4. The minimum imposed load in residential buildings should be taken as 2.0 kN/m² to reflect the possibility of higher loads during construction. 5 The long-term deflection behavior of long-span prestressed concrete box girder bridges has often deceived engineers monitoring the deflections. Measuring small deflections over the first few years, the engineer is tempted to extrapolate and optimistically expect the deflections to remain small, only to be unpleasantl 7.2.3 Long-term Deflection Shrinkage and creep due to sustained loads cause additional long-term deflections which may exceed short-term deflections on the structure. These deflections may be two to three times as large as the immediate elastic deflection that occurs when the sustained load is applied

The long-term deflection of a reinforced concrete member under sustained load is mainly due to creep and shrinkage, and it is usually larger than the immediate deflection. It is important to realise that creep and shrinkage are time-dependent properties of concrete, which are influenced by environmental conditions and the concrete mix design [3] Long Term Bending A GRP pipe's long term ( year) ring deflection or ring bending (strain) capability, when exposed to an aqueous environment and under a constant load, must meet the Level A deflection level specified in the initial ring deflection test. This requirement is defined in the ISO and EN standards

Deflection - Designing Buildings Wiki - Share your construction industry knowledge. Deflection - in engineering terms - is the degree to which an element of structure changes shape when a load is applied. The change may be a distance or an angle and can be either visible or invisible, depending on the load intensity, the shape of the component and the material from which it is made The long-term deflections of the beams were reduced 23 and 33% with a FRP ratio of 0.64 and 1.92%, respectively. The total beam deflections were accurately predicted by the adjusted effective modulus method, and overestimated by about 20% by the effective modulus method

Long-term deflections of reinforced concrete beams due to creep and shrinkage of concrete may be significant, especially for cracked beams, and can cause damage in structural and non-structural elements. Creep and shrinkage of concrete are influenced by the environmental conditions, the size of the element, the water/cement ratio, the type of. Long-term behaviour of concrete in international standards1.1.1. Effects of creep. Long-term behaviour of concrete members, as it is affected by creep of concrete, is typically described in the form of creep factors, λ Δ, which describe the ratio of long-term creep-related deflection to immediate elastic deflection, Δ i

The long-term vertical deflection of a segmentally constructed prestressed concrete bridge due to prestress loss is a typical example. This excessive deflection not only reduces service life of bridge structures but also leads to poor riding quality for the passengers An exponential function used for approximating the long-term deflections of the Lafranconi Bridge in Bratislava (Bolha 2006). (3) Where: w0 is the instantaneous deflection, A, B - rheological constants, t - time in days. Fig. 3 The arrangement of beams into pairs and drawing of loadin sum of the short-term deflection determined in accordance with Eqn. 1 and long-term deflection, in accordance with. Eqn. 2 and Eqn. 3. 1 Short-term deflection The short-term deflection may be calculated by the usual methods for elastic deflection using the short-term modulus of elasticity of concrete, E c and a For ± 1 percent accuracy and predicted deflection of 3 percent, actual deflection would be between 2 percent and 4 percent. Note: A. Values applicable only for fills less than 50 ft. B. Table does not include any safety factor. C. For use in predicting initial deflections only, appropriate deflection lag factor must be applied for long-term. 1. Check for Long Term Deflection. After the run-analysis of the slab, the designer's first thing to check is if the slab satisfies the long term deflection. The long term deflection should not be less than L/240 according to ACI code and ideally not more than 24 millimeters

Long-term deflection in slabs is the deflection or deformation that occurs over time due to shrinkage and temperature. It is also influenced by the condition of the cracking and concrete creep. Long-term deflection is very important in the design of reinforced concrete structures. The calculation of the deflection of a concrete slab involves. A NEW METHODOLOGY FOR THE CALCULATION OF LONG-TERM DEFLECTION OF SLABS WITH RIBS. In version 18.1 you can define a beam as a rib in your floor/slab system and the software itself calculates the accurate stiffness for the rib and the slab independently. Moreover, you obtain both the total deflection and the deflection due to creep at the same time Long Term Deflection in RISAFloor ES. RISAFloor ES has the ability to check the Long Term Deflection with Creep and Shrinkage. The program uses an iterative method to adjust the plate stiffness until it converges upon a solution. You can setup all the necessary coefficients and factors in the Model Settings (as shown below)

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Dear all, I know there has been a few post regarding the topic. Yet, I'm still having some issues regarding the calculation of long term deflection for a RC slab according to ACI 318-11. Basically, the provisions in my country code (Israel) are based on the ACI 318 provisions. My queries are:. d(sus):initial sustained load deflection . total long term deflection d=d(L)+long term factor * d(sus) 2-Base on many examples I had done to check this issues for beam deflection on provided reinforcement I found out that. Robot deflection result > (1.5 to 1.7 of the manual result ). conclusion A long-term deflection test is performed for 470 days on two simply supported prestressed concrete box beams under sustained uniform load. The deflection growth rules of the box beams under both cracked and uncracked states are studied. The measured longterm deflection of the cracked beam is 18.4% larger than that of the uncracked beam, whereas the deflection growth coefficient of the cracked. Long Term Deflection : The time dependant deflection factors are based on the length of time that long term deflection is to be measured at per ACI 318-99 The Initial Time Dependant Factor is used to determine the long term deflection due only to dead load. That is, the portion of long term deflection that occurs prior to the.

Setting up Incremental and Long-Term Deflection Checks in

Influence of peak loads on long-term deflection The author6 recently tested a series of 6 simply supported one-way spanning slabs in the Concrete Structures Laboratory at Imperial College to determine the influence of short-term construction and in-service loads on long-term slab deflections. The slabs measured 500mm wide by 3600mm long by 150m Total long-term deflection vt at any time t under sustained load can be expressed as a sum of initial-plus-creep deflection Vcp and shrinkage deflection Vsh, t.e., Vt = Vcp + Vsh (1) Considering service loads, Vcp can be computed by using the formulas of elastic deflection employed for calculating immediate deflection with Ecle, the. Short- and Long-Term Deflections in Reinforced, Prestressed, and Composite Concrete Beams. Journal of Structural Engineering, 2007. Dario Aristizabal-Ochoa. Angela Beatriz Mejia Gutierrez. Download PDF. Download Full PDF Package. This paper. A short summary of this paper Control of creep and shrinkage deflections is important for successful design of concrete elements as the deflections influence their sizing and thus the associated costs. A 5 year experimental study was undertaken to address the most common alternative design approaches to alleviate long-term deflections of concrete structures. There are hardly available literatures on long-term deflection of TCC beams under cyclic humidity conditions but a few long-term tests performed on TCC structures so far are reported in (Ahmadi 1993, Brebbia 1991, Bou Said 2004, Ceccotti 2006, Fragiacomo 2007, Grantham 2004, Hailu 2012, Meierhofer 1993)

كيف يتم قياس التشوه للسقف و ما هي الحدود المسموح بها

Clarification: Lin suggested a procedure which is not exactly accurate but it helps in calculating long term deflections in a very simplified manner, this procedure helped in calculating the long term deflections. 10. The long time deflections are expressed as _____ a) a f = (a il-a ip xp t /p i) (1+ϕ) b) a f = (a il-a ip xp t /p i) c) a. The long term deflection due to dead load is long term 3.0 0.078 0.234 in The short term live load deflection is 125 0.078 0.111 88 liveload Δ= =long term in The ACI code limiting value for the present case is found to be 1/480 times the span, or limit 20 12 0.500 480 × Δ= = in based on the sum of the long-time delfectin due to sustained.

4. Short- and Long-term Deflections Short-term deflection refers to the immediate deflection after casting and application of partial or full service loads Long-term deflection occurs over a long period of time largely due to shrinkage and creep of the materials Samirsinh P Parmar, DDU, Nadiad, Gujarat, India 4. 5 2. Propose mechanics-based methods for calculating long-term deflection increments due to creep and shrinkage. 3. Assess the accuracies of existing and proposed methods by investigating test-to-predicted ratios for the total (i.e. immediate plus long-term) deflections. 4. Outline any shortcomings with existing methods and propose improvements The results of experimental investigations into the long-term deflection of RC beams containing ground, granulated, blast-furnace slag (GGBFS) are presented. The creep deflection is determined under constant, sustained, four-point loading at the ages of 1, 3, 7, 14, 21, 28, 30, 56, 60, 90, 120 and 150 d long-term deflection such as the reinforcement ratio and the type and the level of sustained load. Increasing the FRP reinforcement ratio results in reduction in the total sustained load deflection. Similarly, for the reduction in the sustained load level. Carbon FRP reinforced beams have the least total long-term deflec-. How the rc beam module computer the long-term deflection? It follows the code provisions. You can decide on the number of points where cracked stiffness is calculated . Is the values in Result/Deflection are short-term? The results for static analysis of a model are based on elastic behaviour of the material (no cracks)

In some circumstances, the long-term increase in deflection may be reduced to 20 or 30 percent of the short-term deflection. 6 14. In continuous beams, where the flexural rigidity varies from negative moment regions to positive moment regions, the deflection must be computed by a method which takes into account. T1 - Long-term lateral deflection of precast, prestressed concrete spandrel beams. AU - Mercan, Bulent. AU - Schultz, Arturo E. AU - Stolarski, Henryk K. AU - Magaña, Rafael A. PY - 2013. Y1 - 2013. N2 - Slender precast concrete spandrels that span long distances are being used to increase the cost effectiveness of precast concrete parking.

Long-term deflection=three times dead Plus one time live

As evident from the names, short-term deflection refers to the immediate deflection after casting and application of partial or full service loads, while the long-term deflection occurs over a long period of time largely due to shrinkageand creep of the materials A typical example is one of long-term vertical deflection of a segmentally constructed prestressed concrete bridge due to prestress loss. Excessive deflection reduces the service life of bridge structures as well as leads to poor riding quality for passengers. This paper introduces a new method that employs control tendons to adjust the. While long term deflection is an important benchmark and guideline for following and maintaining standards, the life cycle a balcony slab experiences should also be evaluated. From the start of concrete pouring and stressing, deflections need to be evaluated for the construction loads and attachment of doors and railings

2.4—Control of deflection 2.5—Short-term deflection 2.6—Long-term deflection 2.7—Temperature-induced deflections Appendix A2, p. 435R-16 Example A2.1—Short- and long-term deflection of 4-span beam Example A2.2—Temperature-induced deflections Chapter 3—Deflection of p rest essed conc ete one-way flexural members, p. 435R-20 3.1. instantaneous deflection calculations Long-term creep and shrinkage multipliers (cites Therefore Calculations Can be used to justify slab thicknesses less than the minimums specified in Table 9.5(c) No calculations required if slab thickness satisfies minimums Table 9.5(c Deflection is commonly grouped with the term projection. Projection, like deflection, is where you place blame on others. But, with projection, you place unwanted feelings onto others. These can be feelings of anxiety, guilt, shame, and other negative emotions AS 3600 attempts to limit the magnitude of long-term deflection to ensure that floors remain serviceable during the life of any building. Code requirements over the past 40 years have become increasingly more stringent, and long-term deflection design is the governing performance criterion for office and similarly loaded floor slabs Long-term deflection response of reinforced concrete flexural members is influenced by the interaction of complex physical phenomena, such as concrete creep, shrinkage and cracking, which makes their prediction difficult. A number of approaches are proposed by design codes with different degrees of simplification and accuracy. This paper statistically investigates accuracy of long-term.

Post-tensioned slabs are usually used for long spans and/or high live loads where the control of deflections assumes a significant role. Prestress has a favourable influence, balancing a part of the imP9sed verticalloads, but, on the other hand, itallows for more slender slabs, which are more sensitive to deflections loads, the deflection increases with time, mainly because of the effects of creep and shrinkage of the concrete and relaxation of prestressing steel. In such a case, the deflection is called the total deflection. The total deflection can be separated into two parts: an instantaneous elastic part and an additional long-term part

Factors for prestressing mean short-term (0.9) and long-term losses (0.85) Life load is from category F -> Ψ 2 =0.6. Only one variable load can be inserted into a concrete combination for the calculation of the nonlinear deflection with creep because these combinations are not envelopes Deflection is a decrease in the vertical diameter of a pipe. The value ΔY (%) is the average long-term vertical deflection of the pipe and is the final expected change in vertical diameter divided by the nominal pipe diameter, expressed as a percentage. A flexible pipe changes shape several times during the installation of a pipeline المعلومات المفصلة عن حساب PAMM 434209 Building Long Term% المدير يتم ادارة الحساب من قبل Revelation. الاستثمار في حسابات PAMM ــ الاختيار الأفضل للحصول على دخل السلبي Many prestressed concrete bridges exhibit increasing long-term deflections under heavy traffic loads. Cyclic creep from increasing heavy traffic has received gradually increasing attention in recent years, but the creep strain is usually treated as an empirical and nonrandom expression

Deflection check (beams: ACI 318) Deflection checks are divided between two deflection types: Immediate short-term deflections and long-term deflections which are resulting from creep and shrinkage of flexural members. Two methods are given for controlling deflections: 1. By limiting span to depth ratio Long-Term Deflections of Reinforced Concrete Beams Ziad Elaghoury The University of Western Ontario Supervisor Bartlett, Michael F. The University of Western Ontario Graduate Program in Civil and Environmental Engineering A thesis submitted in partial fulfillment of the requirements for the degree in Master o H.Q. Wu, R.I. Gilbert, An Experimental Study of Tension Stiffening in Reinforced Concrete Members Under Short-Term and Long-Term Loads, UNICIV REPORT No. R-449, University of New South Wales, 2008. Google Scholar [25] R.I. Gilbert, Calculation of long-term deflection, in: CIA Semin. - Control Long-Term Deflection, 2008, 22 For instance, if long term and short term deflection of an element is 25 mm and 12 mm respectively, (total deflection is 37 mm), adding 2% compression reinforcement decline long term deflection by 50% means 12.5 mm and total deflection of the member will be 24.5 mm. Compression steel reinforcement effect will be higher if it placed close to. 2.short term and long term deflections should be the same if we assign zero to Ksi Factor (last textbox below) , or zero to ratio of loads, in the sls tab in the reinforcement parameters to the panel we want to Verify short term deflection for. 3.If we want Live load short term deflection , follow up the point 2

129-Short & Long Term Deflection for Hidden Beams 01

long-term deflection. Also, ACI 440.2R-02 [10] summarized the studies for structures reinforced with nonprestressed FRP-sheets. This paper provides a simplified procedure to calculate the long-term deflection of structures strengthening by prestressed or nonprestressed FRP-sheets including creep and shrinkage of concrete beside the relaxation. The long-time deflection multiplier specified in the ACI Code is simple to use, but neglects the effects of several parameters such as age at loading and reinforcement ratio that are known to have significant effects on long-time slab deflections In (), for the nonprestressed concrete, the base factor for additional long-term deflection, , is 2.0 in the absence of compressive reinforcement.For PSC members, however, since the elastic deflection due to member weight at the release of the prestress, not at the standard age of 28 days, is multiplied by the long-time factor, the factor should be calculated considering the elastic modulus at. الترخيمDeflection: هو تأثير الاحمال الخارجية على شكل المنشأ فى صورة ازاحة او دوران بزاوية معينة. من أسباب الترخيم: أخطاء تنفيذية نتيجة فك الشدة الخشبية مبكرا و اخطاء تصميمية نقص حديد التسليح او.. The long-term deflection of a composite slab is determined by multiplying the calculated instantaneous slab deflection due to sustained loads by the long-term deflection factor, ∆ LTD = λΔ i,sust. The long-term deflection factor is a function of the sustained load duration and the amount of reinforcement in the concrete compression zone

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Checking slab deflection is included in the beam design section of BS 8110 Part 01. The deflection can be checked by two methods. If you know the maximum deflection for the relevant load case, we can check whether it is with in the limit. Code gives the maximum limits of deflections base on the spans. Other methods of check the deflection is. Usually you are interested in short-term and long-term deflections. Load history deflections can be used to evaluate both. Calculate Load History Deflections . View maximum short term load deflection . View sustained deflection . Parent topic: Calculate and view the result The load combination for short-term effect deflection check is D+L, and for long-term effect is D+0.5L (Minimum Design Loads for Buildings and Other Structures, ASCE-7, 2010). It is also a general practice to use Finite-Element Analysis software to check floor deflections (especially for two-way flat slabs) based on actual reinforcing layout.

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