Question
Download Solution PDFIdentify the type of lacing/batten system shown in the figure below.
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFExplanation:
Lacing:
- Flat or angle sections are normally used as lacings. The purpose of lacing is to hold the various parts of a column straight, parallel, and at a correct distance apart and to equalize the stress distribution between its various parts.
- The firm lines representing lacings show single lacing on one face and the dotted lines represent lacing on the other face, but this arrangement is not preferred as it gives undesirable effects.
- Lacing bars should not project beyond the column section. Usually, these are connected with a single rivet at the end but sometimes two rivets are provided assuming that one rivet out of the two may be faulty, though the stresses are normally small and only one rivet may be sufficient.
- There may be the possibility that a rivet connecting the lacing flat at a point fails, then the length of the component member will double.
- The latter is not recommended by the I.S. code. Single or double lacings can be provided depending upon the criteria discussed below and are then designed as compression members.
- The transverse shear force for which the lacing system is satisfactory if properly designed is usually very small and a single lacing system is sufficient, but the designers consider the double lacing system to be superior though uneconomical, and recommend it.
Last updated on May 28, 2025
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