Architect and engineer . adjacent spans,the shearing forces are obtained, which ingeneral are not equal at both ends of thespan. Assuming a linear load distribution,producing these shearing forces and neg- lecting continuity, this loading can be read-ily determined by means of two equationswith two unknowns each, the unknownsbeing the load ordinates over the these assumptions and for positiveshearing forces, the loading will be com-posed either of two positive or one positiveand one negative triangles. The loadingof the horizontal members being known,their stresses can be readil
Architect and engineer . adjacent spans,the shearing forces are obtained, which ingeneral are not equal at both ends of thespan. Assuming a linear load distribution,producing these shearing forces and neg- lecting continuity, this loading can be read-ily determined by means of two equationswith two unknowns each, the unknownsbeing the load ordinates over the these assumptions and for positiveshearing forces, the loading will be com-posed either of two positive or one positiveand one negative triangles. The loadingof the horizontal members being known,their stresses can be readily determined. The above analysis assumes that thestress distribution in walls and slabs, usedas vertical and horizontal members, respec-tively, is the same as in ordinary beamsand girders. This assumption, generallymade by structural engineers, is far frombeing true for reasons not possible to setforth in this brief discussion. For thoseinterested in the subject, reference is madeto treatises on the Theory of THE ARCHITECT AND ENGINEER ^ 46 ? MAY, NINETEEN THIRTY-FIVE Moisture by A. A. Brotcn Survey in San Francisco DisclosesNeed [or Corrective Measuresto Check Termite Activity THE detailed inspection of the wreck-ing of buildings for the approachesto the San Francisco-Oakland BayBridge makes possible a number of inter-esting observations on the termite situationon Rincon Hill and adjoining areas. Of thefirst 85 pieces of property cleared by thewreckers, 81 were found to be infested bydamp wood or subterranean termites, pow-der post beetles, and fungi. In a numberof instances both species of termites andbeetles were found in the same property. On Rincon Hill, where rock is at or nearthe surface, the damp-wood termite is pre-dominant, and has done extensive damage;while in the sandy soils to the south andwest of Rincon Hill the subterranean ter-mites appear to predominate. In every casefungi has been found associated with bothspecies of termites. The part played by
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