A statistical study of construction productivity from 1917 to 1957. - Page 74 |
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window length for each hay, resulting from use of concrete
columns, is of little significance.
In all other respects, the conditions chosen for the;
standard building were duplicated in the improved design.
A level site, moderate climate and ordinary soil conditions
were again assumed with foundations carried to a minimum
depth of 3 ’0” below grade. Summer construction conditions
without "contingency1’ factors were again used.
II. STATISTICAL METHODS
Data to establish total manhours for construction of
the improved design in 1 9 57 was obtained by estimating the
number of onsite manhours required to construct this
building under average conditions prevailing during the
year 1957. Methods of design and construction were
selected from the author’s experience and represent standard
industry practice as applied in the three geographical
areas of Atlantic Coast, Texas-Gulf Coast, and Southern
California.
Quantity Survey
Material quantities were obtained by a careful
review of the improved design. Care has been taken to
obtain a complete tabulation of operations, particularly in
the placing of lifting lugs, weld plates, and the like which
are peculiar to precast methods. These data are presented
i
in the Appendix for reference. j
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| Title | A statistical study of construction productivity from 1917 to 1957. - Page 74 |
| Repository email | cisadmin@lib.usc.edu |
| Full text | window length for each hay, resulting from use of concrete columns, is of little significance. In all other respects, the conditions chosen for the; standard building were duplicated in the improved design. A level site, moderate climate and ordinary soil conditions were again assumed with foundations carried to a minimum depth of 3 ’0” below grade. Summer construction conditions without "contingency1’ factors were again used. II. STATISTICAL METHODS Data to establish total manhours for construction of the improved design in 1 9 57 was obtained by estimating the number of onsite manhours required to construct this building under average conditions prevailing during the year 1957. Methods of design and construction were selected from the author’s experience and represent standard industry practice as applied in the three geographical areas of Atlantic Coast, Texas-Gulf Coast, and Southern California. Quantity Survey Material quantities were obtained by a careful review of the improved design. Care has been taken to obtain a complete tabulation of operations, particularly in the placing of lifting lugs, weld plates, and the like which are peculiar to precast methods. These data are presented i in the Appendix for reference. j |
