9 value as a conservative (or realistic) proportion of DL to use when it is beneficial to your system. From the data: Check the stability of the retaining wall against sliding and overturning Determine the maximum and minimum pressure under the retaining wall. group method of data handling (GMDH The unit weight of the concrete, Yconcrete, is 23. The ground water level is at 5 m below the base of the wall. The weight of the retaining wall including the gravity loads within it plays a vital role in performing the stability check. JAE (Structural) 31 Oct 18 18:05. I have used the 1. 1 GENERAL. neglect hydrostatic uplift and use the unite weight of concrete equal to 23. 8 26. 4 Sliding Friction Unless otherwise required, tanks that may be subject to sliding due to wind shall use a maximum allowable sliding friction of 0. For thedesign of the wall, determine SV,L, and ll. Sliding Check is a stability check against Horizontal Force induced by the superstructure load. Determine the factor of safety for overturning and sliding, assuming the active earth load is acting on the wall a distance H/3 from the bottom of the wall. Opens when Isolated Footing Job > Design Parameters > Sliding and Overturning is selected in the Main Navigator pane. In India large number of stone masonry gravity dams were constructed in the end of 19 th century and in first half of 20 th century. Dec 11, 2023 · Clause 5. com Forum Policies. It may include concrete cracking and sliding, electrical/mechanical failures, human error, etc. The latter will be discussed in this section to ensure that the retaining wall is stable by checking stability against overturning, sliding, and allowable soil bearing pressure. 6 (C) 1. May 15, 2017 · The factors of safety against sliding and overturning mode of failure were determined under action of only earthquake (h t =0 m, h w =23. Accordingly, it must be M E =1. Assess the stability of the cantilever retaining wall in terms of sliding, overturning and bearing capacity failure. Assume a full uplift force on the dam • The footing needs to have sufficient capacity to resist sliding caused by any horizontal loads. 1 (B) 1. 0. 0\) If the factor of safety against overturning is too low, the geometry of the wall must be modified by increasing its dimensions so that the vertical load is higher. Question: Calculate the factor of safety against overturning ONLY from the problem below: For the retaining wall shown in Figure 12-25, compute the factors of safety against overturning and sliding (analyze the latter both without and with passive earth pressure at the toe). Assume that the wall rests on a perfectly impermeable soil layer, and that the friction between the wall and the base is o = 300. After checking the internal stability, find out the external stability against overturning andsliding. -1'-0" hw = 10'-0" -3'-0" 1-0" -6-0"- W2 Civil Engineering questions and answers. kN/m' and ignore the passive resistance in front of the wall): 0. Determine the wall's factor of safety against overturning and find the safety factor against sliding. Failure Mode: A failure mode is the complete chain of events that lead to the failure of the dam. 5000 400 A 700 400 2900 W W W s W b FA ka 1 sin 1 sin 1 sin 30 1 sin 30 INTRODUCTION. This work investigated the non-linear behaviour of ancient natural stone columns in the Mediterranean region made from multiple blocks or ‘drums’. 6 kN/m 12 in. The conventional methods are used to find factor of safety (FOS) against sliding, overturning, and bearing failure. For Problems 13. Sarhosis E. 2 and 1. Calculate ground bearing pressures. Calculate the theoretical forces required to slide and overturn the block and compare it with the experimental values. S. 6WL, here the load reduction is almost 40percent, is this acceptable, kindly guide me Jul 9, 2020 · Abstract. The first studies performed on foundation structural failures were done by Professor Talbot at the University of Illinois in 1913. 6W. Mar 26, 2024 · Determine the factor of safety against sliding, overturning, and bearing capacity failure of the foundation soil. For the granularbackfill, γ1=15. Loads are include hydrostatic force Requirement: Check stability against overturning and sliding, and check soil bearing capacity. 2. The coefficient of friction f = 0. Civil Engineering. Pulatsu V. 5. 10 With the Sy, L, and y determined in Problem 17. 5 m 6. Consider one foot width of soil: Overturning moment: M o =g K a H 3 /6 = 13580 ft-lb . Sliding governs the design of retaining walls most of the time, especially for walls less than 8 feet in height. Engineering, Materials Science. 50. (c) Illustrate your answers for (a) and (b) with a sketch of the lateral earth pressure distribution with depth. The wind is producing a moment of 25 k-ft (factored) at the base. Its height is 12 m and the upstream face has a batter of 1:10. overturned and slid. Check for Overturning The overturning moment due to any lateral load case can be checked from the same Statics Check Results table. 361. In items (a), (b), (c) and (d), the program uses moments –MX instead of FX, MZ instead of FZ– and the restoring moment is computed about the one edge of the foundation. xx. The 0. section to ensure that the retaining wall is stable by checking stability against overturning, sliding, and allowable soil bearing pressure. The first stability check performed for a Cantilever Concrete Retaining Wall is against overturning. Overturning loads are commonly caused by horizontal loads applied above the base of the footing. The damage of roadbed retaining wall caused by mountain torrent is the most common disaster in geotechnical engineering. Problem 2 See Figure 2. 75), and bearing capacity (using Terzaghi bearing capacity equations, Ans: FS = 8. Problem 1: For the cross section of cantilever retaining wall shown below. 40 multiplied by the force against the tank bottom. The depth of water in the upstream side is 6 m. The factors of safety with respect to overturning and sliding along the base are approximately (Take the unit weight of concrete 24. Civil Engineering questions and answers. 5 FS for overturning since late 1970's. Given c=0, f=32°, gsoil=17. 17 to 13. Step 1. Calculate all the forces (40 P) 3. 5 when dead load, live load and earth pressures are Oct 31, 2017 · Sliding occurrence velocity (m/s) Overturning occurrence velocity (m/s) 12ft 20ft 40ft 40ft high cube 12ft 20ft 40ft 40ft high cube Empty weight 29. Cantilever retaining walls provide resistance to overturning and sliding by using backfill weight. 5 m 5 m Upstream side (head water) 19 m 17 m Downstream side (tail water) 3 m Tail 2 m Heal Calculate the factor of safety against sliding and overturning of the given gravity dam as shown below. 8 0 34. 6 Piles Providing Resistance against Uplift, Overturning and Buoyancy 53 5. Jul 28, 2022 · \(FS_{overturning} \geq 2. Determine the F. The module checks service load soil pressure, overturning stability, sliding stability, flexure at each of the four Here’s the best way to solve it. The procedure for overturning is similar to that for sliding with a few differences. The active earth pressure is: and the overturning moment: When coming up with overturning and sliding demand/resistance, the contribution of EACH category is taken separately. Problem 1 (35 points) Determine the factor of safety of the retaining wall (shown below) with respect to overturning, sliding, and bearing capacity. The following subsections discuss how to check the external stability of the MSE wall system against the mentioned three conditions (sliding, overturning, and bearing capacity). There is no factor of safety in the per se, it's just in static equilibrium. Checks the governing axial load acting on the Oct 31, 2018 · Annoyed with your headphones These engineering students are hoping to help. 8 Download scientific diagram | Modes of failure a sliding, b overturning and c bearing capacity instability from publication: A combination of artificial bee colony and neural network for The moment of the active earth pressures, P α, is the overturning moment, M A, while the moment corresponding to the passive resistance P P /F' is the resisting moment, M E. 11. 7 Pile Group Settlement Apr 20, 2023 · This paper presents a study on the probabilistic-based design of a gravity retaining wall under seismic condition. E. e. Check out Eng-Tips Forum's Policies here: FAQ731-376: Eng-Tips. Within the load factors in the Load Combinations. Consider the overturning (moment of forces about the toe) and the sliding of the of the cantilever retaining wall shown in the figure below. 4 25. xx of the program, the selfweight of the mat, and the weight of soil on top of the mat are considered as contributing to the "Resisting Force" for the Sliding Check, and to the "Resisting Moment" for the overturning check, only if, the Dead Weight factor is set to non-zero in the Apply Self weight and Dead Weight 🕑 Reading time: 1 minute Isolated or single footings are structural elements which are designed to transmit and distribute loads of single columns to the soil without exceeding its bearing capacity, in addition to prevent excessive settlement, and provide adequate safety against sliding and overturning. 4 shall be adopted . Engineering. A value higher than 1. Using Rankine's Theory for the earth pressures, check stability against overturning and sliding. I've also seen the 0. The soil carries a uniformly distributed load of 40kN/m2 at the top. Feb 8, 2024 · This paper investigates the sliding surface failure characteristics, earth pressure distribution law and stability safety factor of inverted T-type retaining wall by using the finite element limit analysis software OptumG2, the effects of width of wall heel plate, width of wall toe plate, thickness of bottom plate, soil–wall interface friction angle, soil cohesion and soil internal friction The wall is embedded 1 m into the existing soil. In the Sliding & Overturning page, select Yes for Consider Passive Earth Pressure. . Jump to Chapter. Mar 26, 2019 · Say we have a PEMB moment column and a isolated footing. The retaining wall Sliding calculations are performed to check that the Nov 5, 2019 · Stability Analysis of Structures. 1 AVAVA TA 1. The buckling of Plum resulted in overstressing. 25 m = 23. Assume soil-wall friction angle 8 = 0. A retaining wall is a structure used to resist the lateral pressure of soil or any backfill material. If the required force ratios against overturning and sliding are 2. 3 and 1. IBC 2006 1806. Based on the central point method, a reliability analysis model of the gravity retaining wall under mountain torrent load was established in this paper, and the performance functions of the anti-sliding and anti-overturning stability were derived. View this answer View this answer View this answer done loading Jan 27, 2016 · Here, the value is well above the required value. A concrete dam can be assumed to be trapezoidal in section having a top width of 2 m and bottom width of 10 m. 1 " We would like to show you a description here but the site won’t allow us. . 3 and we = 100 lb/ft? The coeffi- cient of friction f = 0. 6D is an implied inverse safety factor of 1. 6 m 2 . The ability of the dam to resist a sliding failure is commonly calculated by dividing the resistance to movement by the horizontal forces acting on the dam. by Prasad ·. Assume the coefficient of friction at the base is 0. The gravity wall shown has been designed to resist overturning and sliding. Calculate the factor of Safety with respect to overturning (Ans: FS = 3. Lourenço. One is the check for an overturning moment and the other one is the check for sliding. 7 (D) 2. Calculate the required coefficient of static friction for that to occur. 3. However, I cannot find a reference that would back up this Question: Determine the factors of safety against overturning and sliding (include the passive earth pressure using Rankine at the toe for sliding) for the concrete wall shown in the figure below. See full list on structuralguide. However, overturning must be analyzed. Height from top of backfill soil to bottom of footing: H = 11 ft. Question: Calculate the factor of safety with respect to overturning and sliding for the gravity retaining wall shown in Figure 1. 5 kN/m² 1. The stability of this one unit must be checked to avoid sliding, overturning, and bearing capacity. It can be of stone masonry as well as of concrete. F. A concrete cantilever retaining wall is shown in the figure below. Overturning Gravity Dam Failure Calculate the factor of safety with respect to overturning and sliding. The factor of safety against overturning is defined as the resisting moment divided by the overturning moment, and the Calculate the factor of safety against sliding, overturning, and bearing capacity failure for the retaining wall shown inFigure. NEW Jul 6, 2022 · 3. Nov 8, 2018 · The slab Overturning and Sliding Safety Factor results are calculated by comparing the demand/resisting force in the slab’s local z and x directions. Case 1 where surcharge load is applied to point a (see Figure 3), and Case 2 where surcharge load is applied to point b. Sliding must also be avoided: 1. Answers, given in the q …. For sliding, one might apply a lateral spring constant, or some line springs along the edges (or both). 12 kPa Excavation line- -Y = 23. Specify a coefficient value of friction between the soil and concrete. 2 determine the soil pressures under the footing. 3 m) --min 71 = 18. 6 for Dead Load reduction = 9396 lbs. Take H = 8 m and It is required to check the safety of the retaining wall with respect to overturning and sliding Chapter 13, Problem 3P is solved. 2, respectively, determine whether the dam is safe. 1 Hint: The active pressure of the backfill is resiged by friction between the For the wall shown, determine the factors of safety against overturning and sliding and Homework 12. For calculating the Factor of Safety against sliding, the sum of the horizontal resisting loads (pointing to the right) is divided by the sum of the loads pointing to the left. […] May 24, 2024 · The stability of the foundation against sliding and overturning shall be checked, and the factors of safety shall conform to the following requirements. Apr 6, 2005 · Considering in-service loading, the minimum factors of safety for overturning and sliding that I typically use are 2. The safety factor against lateral sliding shall be taken as the available soil resistance at the base of the retaining wall foundation divided by the net lateral force applied to the retaining wall. 1 Overturning Mar 15, 2021 · Structural engineering design tutorial on how to calculate the shear wall design gross overturning moment. 6. 2) A reinforced earth retaining wall is to be 30 ft high. Publication date 1976-02-01 The module allows you to move the axial load application position off-center of the footing, and provides automatic calculation of allowable soil bearing pressure increases based on footing dimensions and/or depth below surface. b. Given the wall below, compute the following: a. This is driven by the same horizontal loads that tend to overturn the wall, and are Determine the factor of safety against overturning and sliding for the following case: (20 points) This problem has been solved! You'll get a detailed solution from a subject matter expert that helps you learn core concepts. 25 2 F F SF g l t resist where F horizontal-resist = summation of forces to resist sliding, typically including the force from the passive pressure and friction (F= N where . Friction force between soil and concrete or passive pressure generated by a shear key can be considered to avoid the sliding of the structure. Determine the factors of safety against sliding and overturning. Exception: Where earthquake loads are included, the minimum safety factor for retaining wall sliding and overturning shall be 1. Mononobe-Okabe equations are used to compute dynamic earth pressures on the wall. Assume that the wall is smooth, and include the passive earth pressure at the toe when applicable. 6) Calculate the factor of safety against sliding, overturning, and bearing capacity failure for the retaining wall shown in Figure. is a constant for the materials in Starting from version 09. For the in situ soil, 16. See Answer. 45. For the cross section of a cantilever retaining wall shown below, calculate the factor of safety with respect to overturning, sliding, and bearing capacity using Rankine active and passive earth pressures. There are 3 steps to solve Nov 19, 2015 · If you're using unfactored loads, then yes, you want the factor of safety of 1. For example: ASD: 0. The Retaining Wall Calculator provides detailed calculation and reporting for sliding, bearing and overturning failure required for any retaining wall design. (1) Comment on the factor of safety values that you determined for this retaining wall. Also determine the required stem thickness at their bases and select vertical reinforcing there, using f y =60,000psi,f c′ =3000psi,qa =5000psf, ρ Question: Problem 4. Include passive pressure in your analysis. Check uplift and stability against sliding and overturning of the structure-soil system. [15] investigated the cause of the overturning failure of two simple-supported curved bridges during the casting of a concrete barrier. Question: A 30-ft-high gravity dam is depicted in the figure 2 below. Use K a = 0. 20, determine approximate dimensions of retaining walls, check safety factors against overturning and sliding, and calculate soil pressures for the wall shown. 9kNm3 and φ1'=30°. Use FS (B)=FS (P)=1. 6DL+0. Jan 1, 2020 · Lee et al. Suppose we wanted to overturn the block before sliding it by applying a force directly to its center (same setup as in our sliding experiment). The active earth pressure coefficient is: (assuming δ=0). Active earth load against the wall assuming Coulomb theory. Check overturning stability; Active earth coefficient: K a = tan (45-f/2)2=0. • Building code requirements. Also determine the soil pressure at the base of the wall. Calculate a) the factors of safety with respect to overturning and sliding and b) compute and draw the soil contact pressure. Stability analysis of structures is mainly considered as sliding, overturning and uplifting. 1. 1 states that "Retaining walls shall be designed to ensure stability against overturning, sliding, excessive foundation pressure and water uplift. Dear learner …. 95 kN/m = 28° c-19. That is, retaining walls “retain” earth, keeping it from sliding. Factors of Safety in Overturning. (d) At what wall deflection do you expect the active Dec 23, 2014 · @Hussam Afifyyou can manually apply the overturning check, multiply horizontal load (either from wind or seismic) with the distance from the bottom of the footing to get your overturning moment, and then check against the stabilizing moment i. Show transcribed image text. Mar 21, 2024 · \( \sum M_{OT} \) – Overturning Moment . 3 m Sand = If there is no area in tension, then it's not lifting up or overturning. The retaining wall is used to accommodate a 9/2 ft. The internal erosion in the abutment at Camara resulted in a rock block sliding. This problem except the Toe is 3ft. 0. 17 (a). 1) For the wall shown in Fig. The ultimate bearing capacity of the foundation soil is 500 kPa and the coefficient of base friction, =0. Design the wall and base reinforcement assuming fcu 35 kNm 2, f y 500 kNm 2 and the cover to reinforcement in the wall and base are, respectively, 35 mm and 50 mm. Mar 4, 2019 · There are two checks to consider the stability of the retaining wall. 3 and w e = 100 lb / ft 3. 18 which can be compared to the allowable FOS for sliding. 5 kN/cu. Problem 1 Compute the sliding and overturning factors of safety of the wall of Problem 2, homework #5, if the wall thickness is b = 4 ft, and the wall has a unit weight of ywall = 150 pcf. 37), sliding (Ans: FS = 2. Check of Sliding Sliding can be consider in two ways. These capacities are calculated in accordance with The Reinforced Concrete Design Handbook, ACI SP-17 (14), Vol. The SR-xx and SR-zz stability ratios are compared against the SF value in the Load Combinations spreadsheet. com This is a simple guide on how to calculate overturning moment in a retaining wall with examples. 17. Question: 5 m c (60 pts) For the retaining structure given below determine the (a) lateral earth pressure at rest, and (b) Rankine's active pressure at depths z=0m, 5m, and 10m. This is used to calculate the coefficient of passive earth pressure using Rankine's formula. Calculate The Factor of safety against sliding can then be obtained as 117. Swiver -- depends how dead your dead load actually is. Sliding and Overturning form (Isolated Footing) Used to input stability safety factors for the current isolated footing job. Same as example 12-3, but the toe is 2 ft − 0 in. 0 and 1. Loads are include hydrostatic force, The specific weight of the concrete is 23. C=0 Unit weightconcrete=24kN/m P=0 7 m 7318IN Pick your own input data for the variables a, Here’s the best way to solve it. The ultimate bearing capacity of the foundation soil is 500kPa and the coefficient of base friction, μ=0. Calculate the factor of safety for sliding, overturning and bearing capacity for the retaining wallbelow. 5-3. The COF =0. Let's try a 6'x6'x3' footing at 145 pcf. A dam which relies on its weight for stability against overturning and sliding due to externally applied forces is a gravity dam. The analysis should be done when the reservoir is at design capacity (a depth of 25 ft) with 5 ft of freeboard. I hope my respond answers your questions . 2 22. We are using the weight of the footing to resist the overturning of the moment. \( \text{Sliding Factor of Safety} < \text{Sliding Force} \) Uplift Check. The material properties and the wall dimensions are provided below:due to concern about the soil erosion in front of the wall, ignore passive earth pressure, using 23 as reduction factor for friction and cohesion between the concrete and Overturning failure is a result of excessive lateral earth pressures with relation to retaining wall resistance thereby causing the retaining wall system to topple or rotate (overturn). However, few of them have been focused on the sliding in the failure process, and numerical analyses have been done based on the position of the vehicle at the time of the collapse. (Notes: Neglect passive resistance) 1. Sliding failure: The retaining wall may slide along its base. (Use Rankine's Method; γconcrete. In the Cover & Soil page, provide the Angle of repose in degrees. The soil properties for both the front-fill and back-fill are lambda =120 lb/ft^3 and = 34 degree. Advances in the next 50 years include Prof. Sep 17, 2016 · Dear Gents, I have one question using ACI-318-11 code. • The footing needs to be sufficiently stable to resist overturning loads. Retaining walls support soil and other materials laterally. Bretas N. The retained soil behind the structure and the soil in front of it are cohesionless and has the following properties: SOIL 1: , φ u = 3 5 °, γ d = 1 7 k N m 3, SOIL 2: , φ u = 3 0 o, δ = 2 5 °, γ d = 1 8 k N m 3, γ s a t = 2 0 k N m 3. Give an analysis of the stability of the dam for the base section for overturning and sliding in the full The unit weight of the concrete being 24kN/m3. concrete density of 135 #/ft3 fluid density of 120 #/ft3 The friction angle -27 Reel angle Pressure -30. 3. (Unit weight of concrete = 24 mm) kN m3 Is the wall stable against overturning, sliding, and bearing capacity? If not, what is your solution for the wall instability. 56 kN/m 1. 4 Resistance to Sliding, Uplift and Overturning 5. Sliding - The factor of safety against sliding of structures which resist lateral forces (such as retaining walls) shall be not less than 1. Use Kg = 0. 2 30. Note: two cases are being examined. , factor of safety against overturning, sliding, and bearing capacity failure) of the wall. For the wall shown, determine the factors of safety against overturning and sliding and determine the soil pressures under the footing. The unit weight of the concrete is 145 lb/ft 1. Download Table | Factor of Safety against Sliding and Overturning in the Example Problem from publication: Active Earth Pressures for Unsaturated Retaining Structures | Although commonly ignored Problem : Figure below shows the cross - section of a reinforced concrete retaining structure. e (weight of the structure + soil above footing multiplied with their respective lever arms. When looking at "during construction" conditions, I am assuming that since this is a temporary condition, lower factor of safeties could be used. Use Coulomb's theory. 7/54 = 2. 12. Retaining walls must resist overturning and sliding, and the pressure under the toe (front bottom edge of footing) should not exceed the bearing capacity of the soil. 5 m and k v =0. Therefore, it can conclude as overturning check is satisfactory. This is even more important when you have more load categories. The moments reported are with respect to the origin which is 0,0,0 by default. Sliding and overturning are due to lateral loads and uplift are due to the upward pressure created by liquids. The approximate factor of safety against sliding is (A) 1. Richart’s tests at the University of Michigan. 88 Sliding and overturning safety factors are calculated for Shafarud dam with a height of 150 meters, under construction, placed in Gilan, north of Iran. drop in elevation. Its value varies by loading condition, but generally, the result should vary between 1. A retaining wall with geotextile reinforcement is 6-m high. B. ACI 318-14 provides guidelines regarding the design of isolated footing. 46k h) by the proposed method, and is shown in Fig. Generally, this factor of safety for the overturning moment is 1. 1. 2). A two-dimensional custom-made computational model…. May 7, 2009 · The safety factor against sliding shall be taken as the available soil resistance at the base of the retaining wall foundation divided by the net lateral force applied to the retaining wall. 9, check the overall stability (i. Sep 13, 2015 · Sliding and overturning safety factors are calculated for Shafarud dam with a height of 150 meters, under construction, placed in Gilan, north of Iran. 4 43. • Local conditions. 9 kPa m Fill: y = 17. of overturning and sliding of the wall for the following conditions assuming friction angle between the base of the foundation and the soil equals to 20o. So 6' * 6' * 3' * 145 pcf = 15660 lbs * . 2017. Check the system for overturning and sliding risks (30 P) 2. The coefficient of friction between the base of the dam and the foundation is 0. Three machine learning (ML) models, viz. Sliding check. 4 m l 1 m 038 0. (0. The total vertical force component made up of the self-weight of the wall is 14 kips per-unit length of wall. Draw all the forces on a sketch diagram (30 p) 2. 9 20. 5M A. For the geotextile, Tall =16kNm. Here’s the best way to solve it. 5 in this example means that the stabilizing forces are greater overturning = moment due to the active pressure about “o”. Design a simple retaining wall may not need to follow the procedure mention in this article. 5kN/m3 and µ=0. Assume that the wall is smooth, and include the passive earth pressure at the toe when applicable. Many guidelines were recommended to design and analyze gravity dams against static and dynamic loads by considering different load combinations specified in codebooks [ 3 , 4 ]. 6D +/- 0. The coefficient of base friction is 0. Sliding Check. Question: Problem 3 (30 points) Consider the cantilever retaining wall and the associated loadings as shown below. Use it up, wear it out; Make it do, or do without. Nikitas P. 11. Oct 4, 2022 · The dam must be checked for different failures due to overturning, sliding, or crushing due to material failure by governing the standards given by IS code 6512-1984. Jul 28, 2022 · A calculation example of the overturning moment can be found here, and the overturning check can be performed using the Free SkyCiv Wall Footing Calculator. Wall Overturning Check Jan 19, 2021 · This overturning moment must be resisted by an opposite moment produced by the sum of the vertical forces times the distance to the toe end, including the wall selfweight and the weight of the backfill over the heel and toe. m. 8 kN/m3, ф 20°, and ca 55 kN/m2 2. 5, respectively. Backfil material Type 2 soil Coefficient of Apr 11, 2007 · I know I originally posted this thread concerning spot footing overturning, but the factor of safety against overturning also applies to retaining walls. 67 and the ground water table is very deep. using ACI 318-11, there is no footprint in the overturning and sliding, the load combination explained only for ultimate strength condition and not for serviceability case, in the other hand using ASCE-7-10 describes load combination using 0. If the mat is buried, then you probably want to apply additional dead loads on top of it. Dec 31, 2014 · DTIC ADA022619: Overturning and Sliding Analysis of Reinforced Concrete Protective Structures by Defense Technical Information Center. 2. 4. Here, if attempting to verify the program, you would take all of the loads in the DL category and sum their effects for both overturning and sliding. yh ik ba ml ap jz xr co rh cg