14 BULLETIN 23, U. S. DEPARTMENT OF AGRICULTURE. 
thoroughly compacted by rolling with a hand roller weighing from 300 
to 400 pounds, and any depressions which form should be corrected. 
This is necessary in order to secure uniform density and to prevent 
unequal settlement of the surface. 
HANDLING AND LAYING THE BRICK. 
The brick may all be hauled and piled at convenient intervals along 
the sides of the roadway before grading is begun, or, if more conven- 
ient, they may be delivered as needed on the work. Hauling over the 
finished pavement with wagons until it is complete and opened to 
traffic should be avoided. If the brick are delivered on the work a s 
needed, they should be unloaded from the wagons outside of the curb 
and carried to the pavers, either by hand or in wheelbarrows. Plank 
trackways should also be provided over the newly laid pavement for 
the wheelbarrows when they are used. 
The brick should in all cases be uniformly piled by hand on the new 
pavement conveniently close for the pavers, and each brick should be 
so placed that the regular operation of picking it up and placing it in 
the pavement will bring the best edge up. This method of handling 
the brick requires somewhat more labor than the common method of 
dumping them from wheelbarrows, but it ehnxinates to a great extent 
the practice of picking out and turning over chipped or kiln-marked 
brick, after the pavement is laid. This is very objectionable on 
account of the disarrangement of the sand cushion, which is frequently 
occasioned. 
The brick should be laid on edge and in uniform courses running at 
right angles to the line of the pavement, except at intersections; and 
in order to ''break the joints" each alternate course should begin 
with a half brick. In laying the brick the pavers stand on the pave- 
ment already laid and, beginning at the curb each time, carry across 
as many courses together as they can conveniently reach. The 
courses should be kept straight and close together, and if necessary 
each block of eight or ten courses should be driven back by means of 
a sledge and a piece of straight timber approximately 2 by 4 inches 
by 5 or 6 feet long. The brick should also be laid close in the courses 
and should be crowded together, if necessary, after a course is laid, 
by means of a crowbar inserted at the curb. 
After the brick are laid, the pavement should be carefully inspected 
for the purpose of detecting seft or otherwise defective brick. Mis- 
shapen or broken brick may be detected by the eye alone and the soft 
brick by sprinkling the pavement with water. The soft brick appear 
comparatively dry while the water is being applied and comparatively 
wet after the sprinkling is stopped. All defective brick should, of 
course, be replaced by others which meet the requirements of the 
specifications. 
