The Stability Of Elastic Equilibrium

SCI P 264 Wind-moment Design of Unbraced Composite Frames

This publication presents procedures for the design of wind-moment composite frames in accordance with BS 5950-1 and BS 59550-3. In this method of design, the frame is made statically determinate by treating the connections as pinned under vertical loads and fixed under horizontal loads (with certain assumed points of zero moment). The publication gives design procedures for frames (with composite beams, slabs and connections) that are braced in the minor axis direction. The limitations of the method are explained. In particular, it should be noted that the method is only recommended for low-rise frames up to four storeys high. In addition to design procedures for the ultimate and serviceability limit states, fully worked design example is presented. The publication also reproduces the resistance tables for standard wind-moment composite connections taken from SCI/BCSA publication Joints in steel construction: Composite connections. These connections use steel reinforcement, flush end plates and grade 8.8 M20 or M24 bolts, and achieve sufficient rotation capacity by ensuring that the moment resistance is not governed by local concrete crushing or bolt or weld failure.

SCI P154: Design of steel bridges for durability

A Contractor’s Guide to Installing Interlocking Concrete Pavers

SCI P057: Design of Members Subject to Combined Bending and Torsion

The causes of torsional loading on structural members are discussed and those situations in which the explicit consideration of torsion needs to form part of the design calculations are identified. The basic theory of the torsion of both open and closed steel sections is presented. Solutions of the resulting equations in terms of both design charts and formulae for a selection of applied torsional loadings and support conditions are provided. A simple method for combining the effects of torsion and bending, consistent with the approach of BS 5950: Part I is presented. The complete design approach for combined bending and torsion is illustrated by means of a number of worked examples. These show that design will frequently be governed by the need to restrict twisting at working load to acceptable levels, rather than by considerations of ultimate strength.

AS 1012.16-1996 Methods of testing concrete - Determination of creep of concrete cylinders in compression

This Standard describes the procedure for determining the creep of standard concrete test cylinders subjected to a sustained longitudinal compressive load. This method does not provide means for calculating time-dependent deflection of reinforced or prestressed concrete members.
NOTE: The conditions for curing and storage (see Clause 6) can be varied to suit different requirements, e.g. early pre-stress. The time of loading (see Clause 7) can also be varied to give an indication of other properties. These variations, however, will not comply with the requirements for a creep test as specified in this Standard.

AS 1012.14-1991 Methods of testing concrete - Method for securing and testing cores from hardened concrete for compressive strength

This Standard sets out a method for the securing and testing of cylindrical cores from hardened concrete for the determination of compressive strength for an estimate of the inservice strength of a structure or part thereof.
NOTE: Because of the increased variability associated with core strengths, it is not recommended that concrete cores be used for direct quality control purposes.

AS 1012.13-1992 Methods of testing concrete - Determination of the drying shrinkage of concrete for samples prepared in the field or in the laboratory

This Standard sets out a method for preparing and curing of concrete shrinkage specimens, and for determining the length changes of these specimens due to drying in air. It provides for testing of specimens prepared in the laboratory or in the field, in which the nominal size of aggregate in the concrete, in accordance with AS 2758.1, does not exceed 40 mm. The precision statement in Clause 9 does not apply to specimens which have had non-standard initial curing (normally field-prepared specimens). In addition this Standard requires that field-prepared specimens are marked, recorded and reported as such.
NOTES:
This test method is not always suitable for very low slump concrete (less than 20 mm), primarily due to the difficulties in obtaining adequate compaction. Provided adequate compaction is obtained, the method is applicable. The method is specifically designed for measurement of drying shrinkage of concrete, but it is capable of adaptation for measurement of length changes of specimens subjected to a variety of environmental conditions.