Last edited by Dougul
Tuesday, February 11, 2020 | History

5 edition of Masonry structures found in the catalog.

Masonry structures

behavior and design

by Robert G. Drysdale

  • 10 Want to read
  • 14 Currently reading

Published by Prentice Hall in Englewood Cliffs, N.J .
Written in English

    Subjects:
  • Masonry.

  • Edition Notes

    Includes bibliographical references and index.

    StatementRobert G. Drysdale, Ahmad A. Hamid, Lawrie R. Baker.
    ContributionsHamid, Ahmad A., Baker, Lawrie R.
    Classifications
    LC ClassificationsTH1199 .D78 1994
    The Physical Object
    Paginationxxvi, 784 p. :
    Number of Pages784
    ID Numbers
    Open LibraryOL1734662M
    ISBN 100135620260
    LC Control Number92039538

    Gabions[ edit ] Gabion Wall Gabions are baskets, usually now of zinc -protected steel galvanized steel that are filled with fractured stone of medium size. Cleanup Masonry surfaces should be cleaned of imperfections that may detract from the final appearance of the masonry structure including stains, efflorescence, mortar droppings, grout droppings, and general debris. In this context the brick masonry is primarily decorative, not structural. Specifications governing material requirements are listed in Table 1.

    This increases wall strength and stability more economically than filling and reinforcing all voids. The units are leveled and plumbed while the mortar is still soft and pliable, to prevent a loss of mortar bond if the units need to be adjusted. Procedures such as skillfully cutting off excess mortar and brushing the wall clean before scaffolding is raised, help reduce the amount of cleaning required. To retemper, the mortar is mixed with a small amount of additional water to improve the workability. Vertically staggered bonds tend to be somewhat stronger and less prone to major cracking than a non-staggered bond.

    Once two points of a measurement are established, corner to corner, a chalk line is marked on the surface of the foundation to establish the line to which the face of the block will be laid. After a significant amount of the cement has hydrated, retempering will no longer be effective. The attempts at rusticity of the late 20th century have been carried forward by masons specializing in a free, artistic style, where the courses are intentionally not straight, instead weaving to form more organic impressions. For many years he served on the BSI and international committees concerned with codes of practice and standards for masonry structures and has received many awards for his expertise in structural. Particularly involved in masonry engineering in developing countires, he has published a large number of papers in international journals and conferences. Sometimes river rock of smooth oval-shaped stones is used as a veneer.


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Masonry structures book

Once the joints are tooled, the wall is ready for cleaning. Corner poles for concrete block walls should be marked every 4 or 8 in. To retemper, the mortar is mixed with a small amount of additional water to improve the workability. Care should be taken to spread mortar for the full height of the head joint so voids and gaps do not occur.

Mortar mixing times, placement methods, and tooling must also be consistent to achieve uniform mortar for the entire job.

These checks will show whether or not units will need to be cut. These will act as a single unit and are stacked with setbacks to form a revetment or retaining wall. Since a chalk line can be washed away by rain, a grease crayon, line paint, nail or screwdriver can mark the surface for key points along the chalk line, and a chalk line re-snapped along these key points.

Masonry Structures: Behavior and Design

Both rubble and ashlar masonry can be laid in coursed rows of even height through the careful selection or cutting of stones, but a great deal of stone masonry is uncoursed. This book incorporates discussion on: The evaluation and retrofit process Site investigations and analysis Monitoring Maintenance Assessment and retrofit projects conducted by the authors are presented in a special Chapter as case studies to highlight technical issues and illustrate the process of developing a rational assessment and retrofit methodology for different types of masonry assessment and retrofit projects.

Procedures such as skillfully cutting off excess mortar and brushing the wall clean before scaffolding is raised, help reduce the amount of cleaning required. Projected Growth Rate The projected percent change in employment from to After spreading the mortar on the marked foundation, the first block of the corner is carefully positioned.

Be sure all mortar joints are cut flush with the wall, awaiting tooling, if necessary. Once the corner block is in place, the lead blocks are set— three or four blocks leading out from each side of the corner. This will throw the line off slightly and cause the rest of the course to be laid out of alignment.

Mortar should extend fully across bedding surfaces of hollow units for the thickness of the face shell, so that joints will be completely filled. While not part of the legal requirements of this standardized Handbook, an Appendix providing an example of how to use the direct design procedure for a typical masonry building is provided following the Commentary.

Tighter tolerances may be required by the project documents to ensure the fi- nal overall appearance of the masonry is acceptable. Last Modified Date: Wednesday, September 4, What They Do The What They Do tab describes the typical duties and responsibilities of workers in the occupation, including what tools and equipment they use and how closely they are supervised.

Nolan, K. The first course of block is thereafter laid from corner to corner, allowing for openings, with a closure block to complete the course. Among the subjects covered are: definitions; contract documents; project drawings; design loads; material properties; strength and serviceability; analysis and design; section properties; reinforcement detailing; and quality assurance.

Structural limitations[ edit ] Masonry has high compressive strength under vertical loads but has low tensile strength against twisting or stretching unless reinforced. For many years he served on the BSI and international committees concerned with codes of practice and standards for masonry structures and has received many awards for his expertise in structural.

The commentaries present background details, Committee considerations, and research data used to develop the standards. Concrete masonry units provide strength, durability, fire resistance, energy efficiency, and sound attenuation to a wall system.

Earlier gabions were often cylindrical wicker baskets, open at both ends, used usually for temporary, often military, construction. In this context the brick masonry is primarily decorative, not structural.

When finishing joints, it is important to press firmly, without digging into the joints.Nov 14,  · The book provides background, reference material, and guidance to design professionals, building owners, and contractors on existing masonry.

Construction characteristics of masonry structures, typical material properties, and analytical approaches are included for historic, transitional, and modern masonry construction typologies.

The wide variations in properties of natural stone require that each case be considered individually for the determination of relevant design values.(ii) Specific requirements for prefabricated masonry panels or masonry in composite action with steel or concrete structural members; however, the principles of this Standard may be used for such.

From inside the book. What people 16 other sections not shown. Other editions - View all. Masonry Structures: Behavior and Design Robert G. Drysdale, Ahmad A.

Hamid, Lawrie R.

Assessment and Retrofit of Masonry Structures

Baker Snippet view - Common terms and phrases. allowable American Masonry Conference anchor arch ASTM axial compression axial load backup wall beam bed joints.

Masonry structures are those structures which are built from individual units laid in and bound together by mortar. The term ‘masonry’ can also refer to the units themselves. The common materials of masonry construction are bricks, stones, marble, granite, travertine, limestone, cast stone, concrete block, glass block, stucco and tile.

Notes/Preview **A newer version of this document exists** NEW VERSION. Description. ACI /, “Building Code Requirements and Specification for Masonry Structures and Companion Commentaries,” is a joint document between ACI, The Masonry Society (TMS), and the American Society of Civil Engineers (ASCE).

DESIGN OF MASONRY STRUCTURES Third edition of Load Bearing Brickwork Design atlasbowling.com, atlasbowling.com, Ph.D., and the design of brick masonry structures has shown steady development, based on the results of continuing research in many Preparation of this book has been based on .