Chicago : Engineering and Contracting Pub. Co. · leaf 176
cMath formulaas modified for Baltimore conditions is ad-mirable. Another important element in the designwas the determination of the value n, or thecoefficient of roughness, to be used in Rut-ters formula. After careful study and investigation andconsidering the steep grades, the many dropsrequired… … Fig. 9—Map Showing Storm Water Drains and Drainage Districts. ENGINEERING & CONTRACTING Vol. XXXVI. No. 6. DRAINAGE AREAS. The main features of the topography aredefined by the various streams which passthrough the city. These, in general, flow in anearly southerly direction. The slopes…
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