Bui. 249, U. S. Dept. of Agriculture. 
Plate XL 
10*3 *a wooden b/ocks 
£L£MT/0/V 
Fig. 1.— Typical Design for Finisher's Bridge. 
— 2-/0 
* t 
1 * 
ui- 
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.A 
— a^o 1 * 
Fig. 2.— Typical Cross Section of Concrete Gutter and Design for a Template 
to be Used in Its Construction. 
ITER :upply PIPE 
□ ®a ®a go 
ill 
>&® ® ®/ «. Il'i 
® 
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; I, fireman, also sprinkles subgrade; J, laborer assisting wheelers and 
cement handlers; K, 2 laborers 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. 
/— S WATER SUPPLY PIPE 
\\w\i\\\m\mm 
cokcrete 
m. 
EARTH 
COHERED 
[ CHEERED 
COHERM6 
CAVYAS 
1 , EARTH 
I REMOVED 
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; 0, 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. 
