Mse wall engineering a new look at contracting, design, and construction presented by. Mse walls are commonly used on indot projects to retain insitu soils, back to back mse walls for ramps, wing walls, and as mi\. Tennessee department of transportation earth retaining. Variations on the basic design, including curves, tiers, railings, stairs, walkways and the like are making them more and more attractive to designers and architects. The purpose of this manual is to provide new york state department of transportation construction inspectors with a quick and easytouse set of inspection guidelines for the installation of mechanically stabilized earth systems mses that utilize inextensible metallic reinforcements i. See tennessee department of transportation earth retaining strucures manual for the minimum structural requirements that shall be met by the wall system to provide protection from impact. Width of excavation should allow for width of wall base. The construction manual contains policies and procedures related to the duties of caltrans division of construction personnel, is for information only, and is intended as a resource for personnel engaged in contract administration. Retaining walls and chapter 730 steep reinforced slopes. This manual provides guidance for the safe design and economical construction of retaining and flood walls.
Gec 11 design and construction of mechanically stabilized earth walls and reinforced soil slopes. Triweb retained soil wall system tricon precast, ltd. Design manual mechanically stabilized earth mse chapter 200. The anchored walls are typically used in the cut situation, in which the construction proceeds from the top to the base of the wall. Course objectives they seem to crop up everywhere, like cell phone towers. This manual is intended primarily for retaining walls which will be subjected to hydraulic loadings such as. A typical drainage detail for a gravity wall in particular, an mse wall is shown in. For additional information, please email questions or comments to construction office or call 850 4144150. Spreadsheet design of mechanically stabilized earth walls.
This website and documents are provided for use by persons outside of the kansas department of transportation as information only. The following is a list of terms that will be used in this chapter. A comprehensive field guide for reconfiguration of mse. Provide mse walls that are reinforced with galvanized. Ensure an onsite technical representative from the manufacturer is provided, as necessary or as requested by the engineer. Also, due to the high interunit shear resistance, stoneterratm mse walls do not shear during construction. Mse wall engienering a new look at contracting, design, and. Driving force and resistance for overturning, sliding and stability of temporary construction slopes. If the bridge is singlespan and not constructed part width, either spread footings or piles may be used to support the bridge abutment.
Linear movements of expansion and contraction translati ons are caused by temperature changes. The purpose of this model is to quantify the effect of number of tiers on the stability characteristic of a. Pc17 retaining walls idaho transportation department. They are supported by selected fills granular and held together by reinforcements, which can be either metallic strips or plastic. In 1996, the colorado dot completed the construction of a unique mse wall with. Design and construction of mechanically stabilized earth walls and reinforced soil slopes volume i and ii. Equally important to the final aesthetic and function of any wall is the construction of corners and curves. Field construction manual mse excavation confirm location and elevation of walls. Mechanical properties and engineering significance of these components are discussed below. If the wall steps up one block in height, the base blocks should be installed at. Nebraska transportation center report sprp1 09 p320 final report inspectors manual for mechanically stabilized earth walls this report was funded in part through grants from the federal highway administration and federal transit administration, u. Triweb retained soil wall system the triwebtm wall is a mechanically stabilized earth retaining wall structure comprised of a castinplace leveling course by others, precast concrete fascia panels, panel alignment shims, hdpe bearing pads, filter fabric, adhesive joint materials, connection anchors, paraweb geosynthetic strips soil reinforcement. Gec 11 design and construction of mechanically stabilized. Mechanically stabilized earth mse wall inspectors handbook.
Successful wall construction requires a basic understanding of mse wall construction and carefully following the plans and specifications. Retaining walls and slopes can have a pleasing appearance that is compatible with the. This manual is primarily intended for use by inspectors who are charged with overseeing the construction of mechanically stabilized earth mse walls. The tricontm retained soil wall system is a mechanically stabilized earth retaining wall structure comprised of a castinplace leveling course by others. The mse wall design spreadsheet will be based on the following. Authors naser abuhejleh, michael mcmullen, george hearn, and jorge zornberg 8. These walls are among the most economical, and most commonly constructed.
This is a general illustration and does not identify all facing and reinforcement types or backfill conditions. Best management practices manual pc17 retaining walls 0811 chapter 5 post construction anchors. Include drainage details with a wall unless otherwise recommended to be deleted by the region materials engineer or hq geotechnical office. Kansas department of transportation bridge construction manual version 808 kdot bridge section 4. Mse wall course companion document pdf document this site is maintained by the florida department of transportation ocm multimedia, located at 2740 centerview drive. Mse wall engienering a new look at contracting, design. Has the contractor furnished a copy of any instructions the wall supplier. Has the contractor furnished a copy of any instructions the wall supplier may. Wall systems not meeting the requirements shall have a 51 inch tall barrier rail placed directly in front of the wall with all cost of the barrier wall and end. For each of the mse wall alignments, the site and subsurface conditions should be analyzed to identify areas of geotechnical concern, risk, or potential variability in subsurface conditions which may influence the technical feasibility, design, andor construction or economic viability of the mse wall system. The engineer of record responsible for internal stability design and the design of mse wall components employed by the mse wall system supplier shall have the following minimum qualifications. Shored mechanically stabilized earth smse wall systems design guidelines. Performing organization name and address center for transportation research. Mse wall system history including design heights, dates and current contact information.
Be alert for new or revised specifications that may affect the current manual guidance for contract administration. Our dedicated mse division specializes in the delivery of mse systems of all types in all market segments. For mse wall designs, submit pdf files of working drawings and design calculations. The stability of the wall system is derived from the interaction between the backfill and soil reinforcements, involving friction and tension. If mse wall is on soil, consider possible settlement of the mse wall use piles if the bridge is a continuous multispan structure or if the bridge is constructed part width in phases. Aashto lrfd bridge design specifications, section 11. General illustration of mse wall elements figure a11. A mechanically stabilized earth mse retaining wall is a composite structure consisting of alternating layers of compacted backfill and soil reinforcement elements, fixed to a wall facing. Mechanically stabilized earth mse walls in accordance with these specifications and the wall manufacturers recommendations, and in conformance with the lines, grades, designs, and dimensions shown in the plans or established by the rce. Wall usage by txdot august 2010 through september 2011 retaining wall by type 72% 1% 12% 3% 5% 2% 4% 1% mse conc.
Design considerations for mse retaining walls constructed in confined spaces 5. Slide retaining walls mse mse retaining wall introduction this example demonstrates the use of slide for analyzing the stability of a fivetiered mse retaining wall. Mse retaining wall design considerations by marcus galvan, p. Geotextile support elements are used to model the support. As a federal highway administration design reference for highway projects, this report was prepared to enable the engineer to identify and evaluate potential applications of shored mechanically stabilized earth smse walls. Policy documents and specifications that govern mse wall design and construction. Design and construction of mechanically stabilized earth walls and reinforced soil slopes. Mse walls are structures comprised of steel or geosynthetic soil. Mechanically stabilized earth mse walls in accordance with this sts and the wall manufacturers recommendations, and in conformance with the lines, grades, designs, and dimensions shown in the plans or established by the resident construction engineer rce. Fill wall construction refers to a wall system in which the wall is constructed from the base of the wall to the top i. This report provides insight into material, construction, construction problems and corrective actions, monitoring.
Shored mechanically stabilized earth smse wall systems. Width of excavation should allow for width of wall base and drainpipe. Inspectors manual for mechanically stabilized earth walls. Nilex mse systems can be designed to address technical challenges such as potential for differential settlement and seismic activity, heavy loading and nonstandard backfill materials. Engineering design manual stoneterratm mse wall system 1st edition december 2010 2 stoneterratm mse wall components a stoneterratm mse wall consists of many components. Contrary to other types, the mse walls are supported by the soil, and not the other way around. Bridge director, indot manager, indot office of geotechnical services. Back to back walls for ramps landslide repair phased construction. This mechanically stabilized earth walls mse and reinforced soil slopes rss, design and construction guidelines manual which is an update of the current fhwa nhi00043, has evolved from the following aashto and fhwa references. This mechanically stabilized earth walls mse and reinforced soil slopes rss, design and construction guidelines manual which is an.
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