112 ALASKA 2020 SECTION 304
304-1.01 DESCRIPTION . Construct a subbase course on an approved foundation, as shown on
the Plans.
304-2.01 MATERIALS. Use materials that conform to the following, for the grading specified:
Aggregate Subsection 703- 2.09 Crushed glass may be combined with soil -aggregate material to be used in subbase construction. Meet 703- 2.15 requirements.
304-3.01 CONSTRUCTIO N REQUIREMENTS. Place and compact subbase material to meet the
requirements of Subsections 203- 3.01, 203- 3.03, and 203- 3.04. The material will be accepted for gradation based on random samples taken from the roadway after spreading but prior to compaction. When subbase material i s utilized as the finished wearing course, place and compact to meet Subsections 301- 3.01 through 301- 3.03. Do not place subbase soil -aggregate containing glass cullet:
1.Within four feet from the face of any embankment slope,
2.Within 150 feet from any surface water body,
3.In embankment areas where culvert placement is required,
4.In contact with any geosynthetic material.
304-4.01 METHOD OF M EASUREMENT. See Section 109. Item 304.0002.____ is measured in
place.
304-5.01 BASIS OF PA YMENT. Water for compaction added to the subbase on the grade, is
subsidiary. Payment will be made under: PAY ITEM Item Number Item Description Unit 304.0001.____ Subbase, Grading ___ TON 304.0002.____ Subbase, Grading ___ CY 304.0003.____ Subbase, Grading ___ CYVM 113 ALASKA 2020 SECTION 305 STOCKPILED MATERIAL
305-1.01 DESCRIPTION . Produce and place specified material at designated stockpile locations.
305-2.01 MATERIALS. Meet the materials requirements of the Section indicated in the pay item
on the bid schedule.
305-3.01 CONSTRUCTIO N REQUI REMENTS. Clear and grub the stockpile sites and dispose of
all trees, stumps, brush and debris, as provided in Section 201. Make the floor of each stockpile site uniform in cross section, compacted, and well drained. Construct the stockpiles to occupy the smallest feasible areas. Deposit the material in uniform layers or lifts not exceeding 4 feet in thickness. Avoid segregation of the various sizes of crushed stone or gravel in each stockpile. Place the material in each lift by trucks or other types of ha uling units. Only rubber tired vehicles are allowed on the stockpile. Do not stockpile from a conveyor belt. Make the completed stockpiles neat and regular in form. Make the height of the piles, or their average depth, not less than 20 feet. Make the side slopes 1- 1/2:1 or steeper.
305-4.01 METHOD OF MEASUREMENT. See Section 109, by volume in the stockpile or by
weight. No allowance will be made for settlement, swell, or shrinkage.
305-5.01 BASIS OF PA YMENT. All work involved in preparing the stockpile si te is subsidiary.
Payment will be made under: PAY ITEM Item Number Item Description Unit 305.0001.____ Stockpiled Material Section ___, Grading ___ CY 305.0002.____ Stockpiled Material Section ___, Grading ___ TON 305.0003.____ Stockpiled Material Se ction ___, Grading ___ CYVM 305.0004.____ Stockpiled Material Section ___, Grading ___ LS
Source: Alaska Standard Specifications for Highway Construction, 2020 Edition. Pages 140–140 of 584.