Section 715 — Piling

715.01Untreated Timber Piles. Conform to AASHTO M 168. Fabricate the piles from the following species (or group):

(a)Douglas fir;

(b)Larch;

(c)Red pine;

(d)Red oak; or

(e)Southern pine.

715.02Treated Timber Piles. Conform to AASHTO M 133 and AASHTO M 168. Use Douglas -fir or southern pine. Use the pressure method procedure prescribed in AWPA. Apply the treatment to the piles after millwork is completed. Imprint legible symbols or legend on the end of piles identifying the name of the treating company and type and year of treatment according to AWPA Standards M1, Standard for the Purchase of Treated Wood Products and M6, Brands Used on Preservative Treated Materials.

715.03Steel Pipes. Provide steel pipe piles conforming to one of the following:

(a)API 5L X52 PSL2; or

(b)ASTM A709, Grade 50, meeting non -fracture critical tension component impact test requirements. Use Zone 2 if no temperature zone is shown in the plans. Provide closure plates for closed end piles conforming to ASTM A572, ASTM A588, or ASTM A690, Grade 50.

715.04Steel H- Piles. Fabricate the H -piles from structural steel conforming to ASTM A709, Grade 50. Provide base metal, coil or plate, used for fabrication of steel H -piling meeting ASTM A709 non- fracture critical tension component impact test requirements. Use Zone 2 if no temperature zone is shown in the plans. 715.05 Sheet Piles. Conform to AASHTO M 202. 715.06 Pile Shoes. For timber and steel piles, provide prefabricated cast steel shoes or driving points conforming to ASTM A27, Grade 65-35 or ASTM A148, Grade 90-60. 715.07 Splices . Manufacture splices from structural steel conforming to ASTM A709, Grade 50 for H or pipe piles. 837 715.08 Helical Piles. Provide cold- form ed welded and seamless carbon steel round or square central shaft helical piles conforming to ASTM A500. Provide high strength low alloy structural steel helix plates conforming ASTM A572. Use hot -dip galvanized coating conforming to AASHTO M 111 with a minimum thickness of 3.9 mils . Provide bolts and assemblies conforming to ASTM F3125 and galvanized according to AASHTO M 232.