Calendar: 1879-1880 Page 636

636 APPLIED SCIENCES What cast-iron column will do the same work To carry the wall from pier to pier calculate the scant- lings of fir beam with wrought iron flitch Sketch kingpost Roof-truss in fir for span of 18 feet pitch 45 Introduce iron into this truss for members in tension QUESTIONS FOR ANSWER IN EXAMINATION ROOM Compare the primitive brick with the modern What is hydraulic lime and why Describe stone preservation Describe Dolomite as building stone What is rolled iron and how is it used in building What is in the formula BW' Describe the design of cast-iron girder The same of rolled iron girder Sketch timber roof-truss for purlins on each side 10 Sketch segmental arched stone bridge for span of 25 feet 11 Explain the principle of the lattice girder 12 Sketch timber arch and explain the principle eologu Describe the figure of the earth correctly What are the proofs of there being at the present time high temperature below certain depth in the earth State the exceptions in Germany to the theory and explain the anomaly Cavities are found in certain crystalline rocks which contain fluid and bubble What is the fluid What causes the bubble Explain the bearing of this fact upon the structure of the earth