Bui. 249, U. S. Dept. of Agriculture. 



Plate XI. 





•VI f 



J±tf 





Itf 





PLAN 



--------<E3 



-------<E3 



n 



U 



10 *3 *a wooden b/ocks-^— 



ELEVATION 

 Fig. 1 .—Typical Design for Finisher's Bridge. 



Fig. 2.— Typical Cross Section of Concrete Gutter and Design for a Template 

 to be Used in Its Construction. 





Fig. 3.— Diagram Showing Distribution of Force, Using 2-Bag Mixer. 



A, foreman; B, subforeman; C, finisher; D, 2 laborers striking and tamping; E, 3 laborers placing 

 concrete and assisting in striking; F, mixer tender; G-, laborer cleaning subgrade and setting 

 joints; H, mixer engineer; t fireman, also sprinkles subgrade; J, laborer assisting wheelers and 

 cement handlers; K, 2 laboiers handling cement; L, 2 laborers wheeling sand; M, 3 laborers 

 wheeling coarse aggregate; N, 2 laborers loading sand; P, 4 laborers loading coarse aggregate; 

 Q, laborer sprinkling pavement; R, water boy. Total, 2 foremen and 25 laborers. □ indicates 

 wheelbarrow. 



"2" WATER SaP PLY 



®© 



Fig. 4.— Diagram Showing Distribution of Force, Using 3-Bag Mixer. 



A, foreman; B, subforeman on placing concrete; C, subforeman on charging mixer; D, 2 laborers 

 striking; E, 2 laborers tamping; F, 2 finishers; G, 3 laborers placing concrete; H, mixer tender; 

 I, laborer cleaning subgrade and setting joints; J, mixer engineer; K, fireman, also sprinkles 

 subgrade; L, laborer assisting wheelers; M, 3 laborers wheeling sand; N, 4 laborers wheeling 

 coarse aggregate; O, 2 laborers wheeling cement; P, 2 laborers handling cement; Q, laborer 

 opening bags; R, 3 laborers loading sand; S, 4 laborers loading coarse aggregate; T, 2 laborers 

 sprinkling pavement; U, water boy. Total, 3 foremen and 36 laborers. □ indicates wheel- 

 barrow. 



