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Home > Publications > International Concrete Abstracts Portal
Showing 1-3 of 3 Abstracts search results
Document:
JL56-30
Date:
December 1, 1959
Author(s):
Richard C. Rich and William J. Rouke
Publication:
Journal Proceedings
Volume:
56
Issue:
12
Abstract:
The basic functional requirements for self-service parking structures -clean traffic flow, protection against obsolescence, gradual slopes and turns, and smooth transitions between changes in slope-are met economically with re-inforced concrete. Cost comparisons are provided for several recently built parking structures. Application of these general requirements is illustrated in the 630-car facility completed in Edmonton, Alberta. One-way traffic flow throughout is facilitated by elongated twin helical ramps nested within one another. A circular express down ramp also makes use of nested helixes. Foundation construction, beam and column design problems, radiant heating in slab, and a structurally separate stair and elevator tower are among building elements highlighted for discussion. A transverse expansion joint dividing the 320 ft long building is described, and structural details incorporated to provide for future expansion to IOOO-car capacity are explained.
DOI:
10.14359/8107
JL54-65
June 1, 1958
Earl B. Cohn and W. A. Wall
54
6
One of the 20 largest buildings in the world is the Military Personnel Records Center in St. Louis, MO. Construction of the main building (728 x 282 ft) without expansion joints is a significant design feature, and the case for omis-sion of expansion joints is discussed in some detail. Cracking of floor slabs and building movement subsequent to construction are discussed. This structure has demonstrated the feasibility of building large reinforced concrete structures without expansion joints; safety and satisfactory performance are possible if the structure is designed and construction controlled in conformity with recognized engineering principles.
10.14359/11498
JL42-17
April 1, 1946
A. A. Pavement
42
4
Highway maintenance consists of routine maintenance which is carried on daily and special maintenance conducted by appropriate intervals with spe-cially trained crews -the better the routine maintenance, the less generally, the special maintenance. Routine maintenance operations consist largely of sealing cracks and joints against infiltration of dirt and water and maintaining that seal. Operations vary with types of joints and climatic and subgrade conditions. Maintenance procedure for expansion joints filled. with -nonextruding and extruding material, contraction joints, construction joints and cracks, is deItems’ of special maintenance are covered in considerable detail as they generally require more engineering supervision. Patching concrete pavements with concrete is best because, when properly done, patches are integral with the pavement and not inferior to the original slab. Procedure and methods of construction. Based on extensive experience records, are discussed under the headings: slab thickness, removal of old slab preparation of subgrade, materials and proportion of concrete, finishing and curing. "Mudjacking" and materials and mixtures for the slurries are outlined as a means of both raising settled slabs and minimizing and preventing damage from pumping slab ends. Methods and. means of protecting existing concrete pavements against surface scale where air-entraining portland cement was not used during construction are also outlined.
10.14359/8717
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The International Concrete Abstracts Portal is an ACI led collaboration with leading technical organizations from within the international concrete industry and offers the most comprehensive collection of published concrete abstracts.