TABLES (Continued) 



Page 



19. Secant modulus at proportional limit 116 



20. Materials used for sealants in joints open on at least one 



surface 125 



21. Preformed materials for waterstops, gaskets, and sealing 



purposes 128 



22 . Effect of commonly used chemicals on concrete 146 



23. Typical concrete armor units in use today 158 



24. Concrete armor projects in the United States 158 



25. Applications of asphaltic materials for hydraulic structures... 176 



26. Typical aggregate gradations for preplaced aggregate concrete 



prepared with fine sand grout containing pozzolan and 



f luidif ier 185 



27. Classification of coppers and copper alloys 211 



28. Galvanic series in flowing seawater at ambient temperature 212 



29. Friction piles - specified tip circumferences with minimum 



butt circumferences 242 



30. End-bearing piles - specified tip circumferences with minimum 



butt circumferences 243 



31 . Domestic softwoods 244 



32 . Domestic and imported hardwoods 245 



33 . Preservative retention for timber treatment 255 



34. Preservative retention for treatment of wood piles 256 



35. Representative preservative penetration requirements 261 



36. Preservative retention for treatment of poles 264 



37. Construction limitations: quarrystone revetment 291 



38. Construction limitations: block revetments and subaqueous 



applications 292 



39. Minimum geotextile filter physical property requirements 293 



40 . Corrosion rate of some common metals 320 



41. Types of coatings commonly used on different substrates 324 



42 . Coating components 325 



43 . Recommended coating systems 326 



44 . Qualities of various coatings 333 



45. Residues permitted to remain on blast cleaned surfaces 334 



46. Recommended surface preparation for specified coatings 335 



47. Types, sizes and resulting profile of abrasives used in air 



blast equipment 336 



48 . Sand and airflow consumption 339 



49. Approximate sand usage and labor rates on sandblasting 340 



50. Estimated loss of coating materials during application 343 



51. Chemical backfill for galvanic anodes in soil 348 



52. Approximate data for common galvanic anode alloys 348 



53. Current requirements for coated steel or wrapped pipe 349 



54. Comparison of galvanic and impressed current protection 



systems 352 



55. Potential readings for various reference electrodes 356 



56. Electrolyte IR drop in millivolts 1.5 meters from bare pipe.... 358 



57 . Copper wire resistance 367 



58 . Typical uses of coatings 373 



