This book is included in the Self Reliance Shelter section.
Preface.
The process of building, in the time-honored acceptation
of the term, consists of the assembling of units
already manufactured, and the fitting of them into
their appointed places. Methods of accomplishing these
things have been developed through the successive experience
of generations of builders until they have crystallized
into a traditional practice the cost of which may be prejudged
with reasonable accuracy.
Concrete construction, on the other hand, is less a process
of building than it is of manufacturing. Cement, sand, stone,
water and steel are brought together under conditions which
produce a chemical action that fuses these elements into a
whole quite different from the sum of its constituent parts.
The consideration that this occurs on the spot where the
unit produced is to remain as part of the finished structure,
in no wise alters the essential fact that the process is one
of manufacture. The traditional operations of the builder
come into play mainly in the placing of subsidiary or subordinate
units, and in supplying necessary fittings.
The actual procedure of concrete construction is still very
far from approximating standard practice. Still less has there
emerged any generally accepted system for keeping track
of the individual cost of the innumerable items that enter
into this type of work. Hence no satisfactory basis has been
supplied for making estimates in advance of the actual
undertaking.
Estimates are made, of course; but in the great majority
of instances they are little more than the shrewd guess of
one whose cost instinct has been sharpened by experience.
Few are the estimators of concrete construction whose computations
follow any scientific plan, or whose results are
capable of analysis. Indeed, it may be said of estimators,
as of poets, that they are seldom able to explain their figures
once these have been allowed to cool.
The nature of the special responsibility which the Aberthaw
Construction Company has assumed in the field of
building has necessitated the evolution of a highly exact
system of cost accounting. Upon this, in turn, it has been
possible to establish similarly thorough-going methods of
drafting estimates. Years of study have at length produced
a satisfactory Company practice, which Mr. Mayers has so
clearly outlined in his treatise that it has seemed well worth
while to publish it. It should prove an authoritative text,
helpful alike to students and to practitioners of concrete
construction.
ABERTHAW CONSTRUCTION COMPANY
Boston, January, 1920.
TABLE of CONTENTS
Introductory Part I - Quantities 1: General Procedure Sealing Stationery Forms The Order of Scaling 2: Preliminaries 3: Concrete Concrete Exterior and Interior Footings Concrete Foundation Wall Concrete Exterior and Interior Columns Concrete Floor Slabs and Roof Slab Concrete Drop Panels Concrete Wall Beams Interior Floor Beams Partitions Window Sills and Copings Stairs and Landings Paving Granolithic Finish Carborundum Rubbing 4: Forms Forms for Exterior and Interior Footings Forms for Foundation Walls Forms for Exterior and Interior Columns Forms for Floor Slabs and Roof Slab Forms for Drop Panels Forms for Wall Beams Forms for Interior Floor Beams Forms for Partitions Forms for Window Sills, Copings, Stairs and Landings Formed Surfaces Carborundum Rubbed 5: Reinforcement 6: Excavation General or Steam Shovel Excavation Footing Excavation Backfill Sheeting 7: Masonry Brick Work Brick Veneer Terra Cotta Partitions 8: Plastering 9: Steel Sash 10: Glass and Glazing 11: Doors, Frames and Hardware 12: Light Iron Work and Miscellaneous Iron 13: Roofing and Flashing 14: Painting 15: Engineering, Plans, etc. 16: Clean Up the Job at Completion 17: Liability Insurance 18: Watchman 19: Superintendence, Job Overhead, Office Expenses, etc. 20: Sundries 21: Profit Part II - Determining Unit Prices 1: General Considerations 2: Concrete Foundation Concrete Plant Cost Column and Slab Concrete Window Sills Stairs and Landings Granolithic Finish Cinder Concrete Carborundum Finish 3: Forms General Form Lumber Footing Forms Foundation Wall Forms Exterior Column Forms Bracket Forms Interior Column Forms (Round Steel) Flat Slab Floor and Roof Forms Drop Panel Forms Wall Beam Forms Floor Beam Forms Partition Forms 4: Reinforcement Steel Reinforcement Conclusion
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