wall section of breakaway walls and piers

#WALL SECTION OF BREAKAWAY WALLS AND PIERS CODE#

These components of pier and panel walls are illustrated in Figure 1. Table 7 lists minimum sizes for pier foundations, as well as minimum embedment depths. Table 6 provides pier size and reinforcement requirements for various lateral loads. Horizontal reinforcement requirements can be met using either joint reinforcement or bond beams with reinforcing bars. Tables 4 and 5 provide horizontal reinforcing steel requirements for 6 in. Wind and earthquake loads required in this standard are briefly described in the following paragraphs.ĭesign wind loads (F) on sound barrier walls may be determined as follows:ĭesign information for pier and panel walls is presented in Tables 4 through 7. If design lateral loads are not specified, it is recommended that they conform to those specified in Minimum Design Loads for Buildings and Other Structures, ASCE 7 (ref. Lateral Loadsĭesign lateral loads should be in accordance with those specified by local or state building and highway departments.

#WALL SECTION OF BREAKAWAY WALLS AND PIERS CODE#

Accordingly, it is recommended that materials (concrete masonry units, mortar, grout and reinforcement) comply with applicable requirements contained in Building Code Requirements for Masonry Structures (ref. Since concrete masonry sound barrier walls are subject to a wide range of load conditions, temperatures and moisture conditions, the selection of proper materials and proper workmanship is very important to ensure durability and satisfactory structural performance. Allowable Stress Design of Concrete Masonry, TEK 14-7A (ref. Allowable stresses were increased by one-third, as permitted for load combinations which include wind or seismic loads. The allowable stress design approach was used to develop the designs in this TEK. 1) includes requirements for allowable stress design, strength design and prestressed approaches. 2).īuilding Code Requirements for Masonry Structures, ACI 530/ASCE 5/TMS 402 (ref. Requirements and considerations for reduction of highway traffic noise are discussed in TEK 13-3, Concrete Masonry Highway Noise Barriers (ref. This TEK presents information on the structural design of concrete masonry pier and panel sound barrier walls. Pier and panel walls are also easily adapted to varying terrain conditions and are often used in areas that have expansive soils. In addition, the piers can be offset with respect to the panels to achieve desired aesthetic effects. Pier and panel walls are relatively easy to build and are economical due to the reduced thickness of the walls and the intermittent pier foundations. Various types of concrete masonry walls may be used for sound barriers. The variety of concrete masonry surface textures, colors and patterns has led to its extensive use in sound barrier walls. Visual qualities of noise barriers include overall shape, end conditions, color, texture, plantings and artistic treatment. Noise barriers significantly impact a highway’s visual impression. Because concrete masonry possesses many desirable features and properties-excellent sound resistance, low cost, design flexibility, structural capability and durability, it is an excellent material for the design and construction of highway sound barrier walls.Īesthetics is also an important consideration. Sound barrier walls are increasingly being used to reduce the impact of traffic noise on properties abutting major urban traffic routes.

Wall section of breakaway walls and piers