Building Construction Handbook, Eighth Edition
Bar Coding ~ a convenient method for specifying and coordinating the prefabrication of steel reinforcement in the assembly area. ...
Bar Schedule ~ this can be derived from the coding explained on the previous page. Assuming 10 No. beams are required:- Bar codi ...
Material ~ Mild steel or high yield steel. Both contain about 99% iron, the remaining constituents are manganese, carbon, sulphu ...
Steel reinforcement mesh or fabric is produced in four different formats for different applications: Standard sheet size ~ 4„8 m ...
Cover to reinforcement in columns, beams, foundations, etc. is required for the following reasons: To protect the steel against ...
Typical examples using dense concrete of calcareous aggregates (excluding limestone) or siliceous aggregates, eg. flints, quartz ...
Formwork ~ concrete when first mixed is a fluid and therefore to form any concrete member the wet concrete must be placed in a s ...
Basic Formwork---Details ...
Beam Formwork ~ this is basically a three sided box supported and propped in the correct position and to the desired level. The ...
Column Formwork ~ this consists of a vertical mould of the desired shape and size which has to retain the wet concrete and resis ...
Column Yokes ~ these are obtainable as a metal yoke or clamp or they can be purpose made from timber. Typical Examples ~ Formwor ...
Wall forms ~ conventionally made up of plywood sheeting that may be steel, plastic or wood faced for specific concrete finishes. ...
Formwork sides to concrete walls of modest height and load can be positioned with long bolts or threaded dowel bars inserted thr ...
Precast Concrete Frames ~ these frames are suitable for single storey and low rise applications, the former usually in the form ...
Foundation Connections ~ the preferred method of connection is to set the column into a pocket cast into a reinforced concrete p ...
Column to Column Connection ~ precast columns are usually cast in one length and can be up to four storeys in height. They are e ...
Beam to Column Connections ~ as with the column to column connections (see page 523) the main objective is to provide structural ...
Principles ~ the well known properties of concrete are that it has high compressive strength and low tensile strength. The basic ...
Materials ~ concrete will shrink whilst curing and it can also suffer sectional losses due to creep when subjected to pressure. ...
Pre-tensioning ~ this method is used mainly in the factory production of precast concrete components such as lintels, floor unit ...
«
22
23
24
25
26
27
28
29
30
31
»
Free download pdf