﻿34 BULLETIN 23, U. S. DEPAETMENT OF AGRICULTURE. 



Item 18. Culling and retesting. — Where, under Items 15 and 16 a lot or portion of 

 a lot of brick is rejected, either by reason of failure to show a low enough average test 

 or because of tests above the permissible maximum, the buyer may at his option permit 

 the seller to regrade the rejected brick, separating out that portion which he considers 

 at fault and retaining that which he considers good. When the regrading is com- 

 plete, the good portion shall be then resampled and re tested, under the original con- 

 ditions, and if it fails again either in average or in permissible maximum, then the 

 buyer may definitely and finally reject the entire lot of portion under test. 



Item 19. Payment of cost of testing. — Unless otherwise specified, the cost of testing 

 the material as delivered or prepared for delivery, up to the prescribed number of 

 tests for valid acceptance or rejection of the lot, shall be paid by the buyer. (See also 

 Item 23 . ) The cost of testing extra samples made necessary by. the failure of the whole 

 lot or any portion of it, shall be paid by the seller, whether the material is finally 

 accepted or not. 



SECTION II.— VISUAL INSPECTION. 



It shall be the right of the buyer to inspect the bricks, subsequent to their delivery 

 at the place of use, and prior to or during laying, to cull out and reject upon the follow- 

 ing grounds: 



Item 20. All bricks which are broken in two or chipped in such a manner that 

 neither wearing surface remains irtact, or that the lower or bearing surface is reduced 

 in area by more than one-fifth. Where brick are rejected upon this ground, it shall 

 be the duty of the purchaser to use them so far as practicable in obtaining the neces- 

 sary half bricks for breaking courses and making closures, instead of breaking other- 

 wise whole and sound brick for this purpose. 



Item 21. All bricks which are cracked in such a degree as to produce defects such 

 as defined in Item 20, either from shocks received in shipment and handling, or 

 from defective conditions of manufacture, especially in drying, burning or cooling, 

 unless such cracks are plainly superficial and not such as to perceptibly weaken the 

 resistance of the brick to its conditions of use. 



Item 22. All bricks which are so off-size, or so misshapen, bent, twisted or kiln- 

 marked, that they will not form a proper surface as defined by the paving specifica- 

 tions, or align with other bricks without making joints other than those permitted 

 in the paving specifications. 



Item 23. All bricks which are obviously too soft and too poorly vitrified to endure 

 street wear. When any disagreement arises between buyer and seller under this 

 Item, it shall be the right of the buyer to make two or more rattler tests of the brick 

 which he wishes to exclude, as provided in Item 2, and if in either or both tests, 

 the bricks fall beyond the maximum rattler losses permitted under the specifications, 

 then all bricks having the same objectionable appearance may be excluded, and 

 the seller must pay for the co^t of the test. But if under such procedure, the bricks 

 which have been tested as objectionable shall pass the rattler test, both tests falling 

 within the permitted maximum, then the buyer cannot exclude the class of material 

 repr?sented by this test and he shall pay for the cost of the test. 



Item 24. All bricks which differ so markedly in color from the type or average of 

 the shipment as to make the resultant pavement checkered or disagreeably mottled 

 in appearance. This Item shall not be held to apply to the normal variations in color 

 which may occur in the product of one plant among bricks which will meet the 

 rattler test as referred to in Items 15, 16, and 17, but shali apply only to differences 

 of color which imply differences in the material of which the bricks are made, or 

 extreme differences in manufacture. 



ADDITIONAL COPIES of this publication 

 -^1- may be procured from the Superintend- 

 ent of Documents, Government Printing 

 Office, Washington, D. C, at 10 cents per copy 



