Dao, ANNUAL REPORT 
over with hoes. Broken stone or gravel thoroughly cleaned of dirt, drenched 
with water, but containing no loose water in the heap, shall then be added to 
the mortar in the proper proportion. The concrete will then be turned and 
mixed until mortar adheres to each fragment. 
13. The concrete shall have such a consistency that when rammed the 
mass will not shake like jelly, but will, when struck, compact within the area 
of the face of the rammer without displacing the material laterally. 
14. The concrete thus prepared shall be immediately placed in the work. 
It shall be spread and thoroughly compacted by ramming until free mortar 
appears on the surface. 
15. The whole operation of mixing and laying each batch of concrete 
shall be performed in an expeditious and workmanlike manner, and be 
thoroughly completed before the cement has begun to set. 
16. No retempering of concrete will be permitted, and concrete in which 
the mortar has begun to set will be rejected. 
