May 04, 2017 staad pro retaining wall analysis and designcantilever type 2018 easy method duration. Rcc retaining wallcantilevertype excel sheet engineering feed. Proportioning of reinforced concrete retaining wall the constructor. Retaining walls are utilized in the formation of basement under ground level, wing walls of bridge and to preserve slopes in hilly terrain roads. The delay in construction has lead to a partial erosion of the backfill. Reinforced soil retaining wallsdesign and construction nptel. The stem may have constant thickness along the length or may be tapered based on economic and construction criteria. The total quantity of shuttering work and volume of concreting is calculated. Active earth pressure or earth pressure pa and passive earth pressure p p. Lateral forces on retaining wallsence 454 assakkaf design of retaining walls the design of retaining wall must account for all applied loads. The total height of different types of retaining wall shall be cast in 2 or 3 pours, keeping the maximum height of pour of 2. However, retaining walls can also be constructed for aesthetic landscaping purposes. Rcc retaining wallcantilevertype excel sheet best online engineering resource. Weber course content content section 1 retaining walls are structures that support backfill and allow for a change of grade.
Water retaining wall design calculations water retaining wall design calculations masonry retaining wall design home design ideas 663 x 1194 enchanting retaining wall design example with water tiered garden within size 2048 x 1536 retaining walls design nptel if you previously have highlightin. Design of reinforced concrete wall concept, calculations reinforced concrete wall is designed as a compression member. Retaining walls are structure used to retain soil, rock or other materials in a vertical condition. The weight of the retaining wall including the gravity loads within it plays a vital role in performing the stability check. The density of retained earth is 16 knm3 and angle of repose is 300.
Oct 16, 2017 types of retaining wall gravity wall made of plain concrete or brick masonry the stability of the wall is maintained by its own weight made up to a height of 3 m. Staad pro retaining wall analysis and designcantilever type 2018 easy method duration. Pro v8i, the latest version, allows civil engineering individuals to analyze structural designs in terms of factors like force. Earth pressure and retaining wall basics for nongeotechnical engineers richard p. The lateral forces from backfill is resisted by the weight of wall itself, and due to their massive nature, they develop little or no tension. Brick,concrete, plaster,tile,converter excel sheet. This session is not intended to teach concrete design, but more of an awareness of why things are the way they are american concrete institute building code requirements for. P a active earth pressure or earth pressure pa and passive earth pressure pp.
Determine the factors of safety against sliding and overturning. This manual provides guidance for the safe design and economical construction of retaining and flood walls. In case of masonry retaining wall, the thickness of wall increases with height because masonry resists the lateral pressure. The surcharge from the dwelling was assumed to be 5 knm 2 averaged across the active soil wedge for the gravity case and 4 knm 2 for the earthquake case.
Method statement for retaining wall work execution retaining wall work shall be taken up for a length of 10m to 20m to suit the site condition duly considering the safety aspect. Design a rcc retaining wall to retain earth up to civil. Kousik deb,department of civil engineering,iit kharagpur. Loads and forces acting on retaining wall and their. The wall must be strong enough to resist the bending moment and shear force. Pdf dynamic analysis of rcc buildings with shear wall. Rcc cantilever retaining wall details retaining wall. Active earth pressure tends to deflect the wall away from the backfill. What determines the strength of a reinforced concrete. Reinforced concrete walls sheet pile walls ms walls mechanically stabilized slurry and secant walls soil nailing l. Assuming that the allowable bearing pressure of the soil is 120 knm 2, the. Dec 27, 2014 method statement for retaining wall work execution retaining wall work shall be taken up for a length of 10m to 20m to suit the site condition duly considering the safety aspect. Design retaining wall for car bumper might be necessary when the wall extends above grade, and the parking area is close to it.
Pdf dynamic analysis of rcc retaining walls under earthquake. Collection of design excel sheets online civilforum. Gravity retaining wall and reinforced conc rete retaining wall used to retain soil. The retaining wall has moved about 2 feet from its initial position when it was constructed. Design the cantilever wall and give approximate dimensions of heel, toe and base. Types of retaining wall gravity wall made of plain concrete or brick masonry the stability of the wall is maintained by its own weight made up to a height of 3 m. Pdf case study of failure of retaining wall at dwarakanagar. Types of retaining wall cantilever retaining wall it consists of a vertical wall called stem, heel slab and toe slab. Maximum pressure at base should not exceed the sbc of soil. In this type of retaining wall, counterforts cantilevers are provided on the earth side between wall and footing to support the wall, which essentially spans as a. The safety factor against sliding minimum required f. Rcc cantilever retaining wall details retaining wall design. In this example, the structural design of the three retaining wall components is performed by hand. This 30foot tall reinforced concrete wall was being built in atlanta, georgia, in 1980 as part of the renovation of a portion of i75.
The load that presents the greatest problem and its primary concern is the lateral earth pressure induced by the retained soil. Design and construction of steel plate shear walls. Basics of retaining wall design 10 editionth a design guide for earth retaining structures contents at a glance. Pro is one of the most widelyused software for developing and analyzing the designs of various structures, such as petrochemical plants, tunnels, bridges etc. Gravity walls are the earliest known retaining structures. This is an extremely popular system offering benefits that include zero lot lines, a vertical wall face and a. Manual for design and detailing of reinforced concrete to the. Design and detailing of retaining walls learning outcomes. When retaining wall is designed for impact loads, the stem should be checked at equally spaced points along stem length from top to the bottom as impact load spread at the greater length of the stem. Cantilever retaining wall ouestion for the retaining wall and the profile shown below, calculate.
Units calculator excel sheet for conversion of measurement. Retaining wall design rcc structures civil engineering. Pdf design and detailing of retaining walls for class. Types of reinforced concrete retaining walls are cantilever retaining walls and counterfort retaining walls. The stabilizing force, or righting moment, is the product of the weight of the retaining wall and its moment arm, which is the horizontal distance from the toe to the center of gravity of the wall. Earth pressure p 8 earth pressure is the pressure exerted by the retaining material on the retaining wall. Ce 437537, spring 2011 retaining wall design example 1 8 design a reinforced concrete retaining wall for the following conditions. Shown in figure 1 are the cross sections of ty pical gravity retaining walls used earlier, and rcc.
Reinforced concrete cantilever retaining wall analysis and design aci 31814 reinforced concrete cantilever retaining walls consist of a relatively thin stem and a base slab. Reinforced cement concrete retaining wall cantilever type maximum 6. Active earth pressure tends to variation of earth pressure deflect the wall away from the 5. Worked example 2 design of concrete cantilever retaining.
Reinforced concrete wall design basics mike oshea, p. Design and detailing of retaining walls engineering books. Standard plan s for public works construction 2012 edition written and promulgated by public works standards, inc. Lec 4 problem on design of rcc cantilever retaining wall.
For instance a retaining wall can be used to retain fill along a slope or it can be used to. They are built from solid concrete or rock rubble mortared together. Design of reinforced concrete wall guidelines, concept. Reinforced concrete cantilever retaining wall analysis and. An rc retaining wall 5 m high above foundation base has to retain earth with a horizontal surface at the top. Deflection in reinforced concrete beams content design shear force v, design and construction of steel plate shear walls matthew figure 1 shows an example of a spsw that was constructed in san.
Oct 24, 2012 the wall must be strong enough to resist the bending moment and shear force. Pdf present stateoftheart for the analysis and design of retaining walls under earthquake loading is based on the method proposed by. Retaining wall design example structural engineering software. Mar 04, 2019 there are two checks to consider the stability of the retaining wall. Design a rcc retaining wall to retain earth up to free download as word doc. Gravity wallmasonry or plain concrete cantilever retaining wallrcc inverted t and l counterfort retaining wallrcc buttress wallrcc. This manual is intended primarily for retaining walls which will be subjected to hydraulic loadings such as flowing water, submergence, wave action, and spray, exposure to chemically. A crane is lifting a wall form to cast this reinforcedretaining wall.
Rccii design steps for cantilever retaining wall youtube. Analysis of rates of building construction in excel. Download spreadsheet for rcc retaining wall horizontally 3. Retaining walls are usually built to hold back soil mass. If the height of earth to be retaining surpasses 5m, the bending moment established in the stem, heel and toe slabs are very huge which lead to greater depth of structural components and turn into expensive. Retaining walls are used in the construction of basement below ground level, wing walls of bridge and to retain slopes in hilly terrain roads. The total height of different types of retaining wall shall be cast in 2 or 3. The base is divided into two parts, the heel and toe. The depth of foundation depends on the properties of soil. Reinforced concrete design to bs8110 structural design 1 lesson 5 1 lesson 5. Rcc retaining wall design excel construction of rcc. Following collection of design excel sheets, all excel sheets useful to civil engineers in the construction field. This gl pressure tends to deflect the wall outward.
In case of masonry retaining wall, the thickness of wall increases with height because masonry resists the lateral pressure by its weight. Estimation for retaining wall is done for i rcc work which includes shuttering, centering and excludes reinforcement including bending of bars. Therefore, they are usually not reinforced with steel. Design of retaining wall with counterfort engineering. One is the check for an overturning moment and the other one is the check for sliding. The overturning force is the sum of each destabilizing force times its moment arm. Mar 07, 2017 here i had explained about the design steps for a cantilever retaining wall as per my knowledge. Proportioning of reinforced concrete retaining wall elements such as stem, base slab, toe slab and heel slab is. Retaining wall can be constructed with masonry as well as reinforced concrete. There are two checks to consider the stability of the retaining wall. Design and installation guidelines for retaining walls. Design and analysis of retaining walls 2 economical when the wall height exceeds 8m.
Whereas, if bracing is in front of the wall and is in compression instead of tension, the wall is called buttress retaining wall. Retaining walls such as mse walls with precast concrete panel facing that are susceptible to damage from vehicular impact shall be protected by a roadway. Reinforced concrete wall is used in case where beam is not provided and load from the slab is heavy or when the masonry wall thickness is restricted. Retaining wall design of reinforced concrete structure. Hence they provide a lateral support to vertical slopes of soil that would otherwise collapse. Retaining wall types gravity wall brick or stone retaining wall of height between 1.
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