21. The type of bond provided in brick masonry for carrying heavy loads is
22. Expansion Joints in masonry walls are provided in wall lengths usater than
23. Which of the following bricks are used for lining of furnaces?
24. The curved swellings from the growth of layers or wounds left after branches are cut off in an irregular manner are known as
25. The age of a tree can be known by examining
26. Ultimate strength to cement is provided by
27. The main constituent of fly-ash, is
28. The most important constituent of varnish, is
29. Stones used for ornamental work must be
30. Red short iron cracks when bent due to the presence of
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