- 151 - DIVISION 300 -- SUBGRADE PREPARATION, FOUNDATION COURSES, BASE COURSES, SH OULDER CONS TRUCTION, AND AGGREGATE SURFACING 301 -- GENERAL REQU IREMENTS ......................................................... 153
301.01 General ................................................................................. 153
301.02 Equipment .............................................................................. 153
302 -- SUBGRADE PREPARATION, SHOULDER SUBGRADE PREPARATION, AND PREPARATION OF INTERSECTIONS AND DRIVEWAYS ............................................................................................. 154
302.01 Description ........................................................................... 154
302.02 Material Requirements ........................................................ 154
302.03 Construction Methods ......................................................... 154
302.04 Method of Measurement ...................................................... 156
302.05 Basis of Payment .................................................................. 157
303 -- SUBGRADE STAB ILIZATION ....................................................... 158
303.01 Description ........................................................................... 158
302.02 Material Requirements ........................................................ 158
303.03 Construction Methods ......................................................... 158
303.04 Method of Measurement ...................................................... 158
303.05 Basis of Payment .................................................................. 159
304 -- EARTH SHOULDER CONSTRUCTION ......................................... 160
304.01 Description ........................................................................... 160
304.02 Material Requirements ........................................................ 160
304.03 Construction Methods ......................................................... 160
304.04 Method of Measurement ...................................................... 162
304.05 Basis of Payment .................................................................. 163
305 -- CRUSHED ROCK BASE COURSE ................................................ 164
305.01 Description ........................................................................... 164
305.02 Material Requirements ........................................................ 164
305.03 Construction Methods ......................................................... 164
305.04 Method of Measurement ...................................................... 164
305.05 Basis of Payment .................................................................. 165
306 -- GRANULAR FILL ........................................................................... 166
306.01 Description ........................................................................... 166
306.02 Material Requirements ........................................................ 166
306.03 Construction Methods ......................................................... 166
306.04 Method of Measurement ...................................................... 166
306.05 Basis of Payment .................................................................. 166
307 -- FOUNDATION COURSE ................................................................ 167
307.01 Description ........................................................................... 167
307.02 Material Requirements ........................................................ 167
307.03 Construction Methods ......................................................... 169
307.04 Method of Measurement ...................................................... 171
307.05 Basis of Payment .................................................................. 172
308 -- MEDIAN CONS TRUCTION ............................................................ 173
308.01 Description ........................................................................... 173
308.02 Material Requirements ........................................................ 173
308.03 Construction Method ........................................................... 173
308.04 Method of Measurement ...................................................... 173
308.05 Basis of Payment .................................................................. 173
309 -- CALCIUM CHLORID E TREATMEN T ............................................. 174
309.01 Description ........................................................................... 174
- 152 - 309.02 -- MATERIAL REQUIREMENTS ........................................................ 174
309.03 Construction Method ........................................................... 174
309.04 Method of Measurement ...................................................... 174
309.05 Basis of Payment .................................................................. 174
310 -- ROCK OR GRAVEL SURFACIN G ................................................. 175
310.01 Description ........................................................................... 175
310.02 Material Requirements ........................................................ 175
310.03 Construction Methods ......................................................... 175
310.04 Method of Measurement ...................................................... 175
310.05 Basis of Payment .................................................................. 175
311 -- FURNISH ROCK OR GRAVEL ...................................................... 177
311.01 Description ........................................................................... 177
311.02 Material Requirements ........................................................ 177
311.03 Construction Methods ......................................................... 177
311.04 Method of Measurement ...................................................... 177
311.05 Basis of Payment .................................................................. 177
312 -- REMOVAL AND PROCESSING OF CONCRETE PAVEMENT ..... 179
312.01 Description ........................................................................... 179
312.02 Material Requirements ........................................................ 179
312.03 Construction Methods ......................................................... 179
312.04 Method of Measurement ...................................................... 179
312.05 Basis of Payment .................................................................. 179
313 -- CRUSHED ROCK EMBEDMEN T ................................................... 180
313.01 Description ........................................................................... 180
313.02 Material Requirements ........................................................ 180
313.03 Construction Methods ......................................................... 180
313.04 Method of Measurement ...................................................... 180
313.05 Basis of Payment .................................................................. 180
- 153 - SECTION 301 -- GENERAL REQUIREMENTS
301.01 General
1.Compaction requirements are shown in the contract.
2.The Contractor shall be responsi ble for the repair and restoration of any roadbed damage, loss of stability, or rutting caused by the hauling operations.
3.Maintenance of the granular f ill, base course, foundation course, and subgrade for both roadway and shoulders shall be the responsibility of the Contractor until overlying pavement is complete and accepted by the Engineer. This maintenance shall be cons idered subsidiary to the items for which direct payment is provided.
301.02 Equipment
1.Operation:
a.All equipment shall be kept in satisfactory working condition.
b.Equipment shall be operated within the manufacturer's specifications.
c.The Contractor shall perfo rm the tests and calibrations on all equipment. In the event problems are encountered during the tests and calibrations, the Contractor shall arrange for a trained technician or company representative to make the necessa ry repairs or adjustments to the equipment. Calibrations shall be made as often as is deemed necessary by the Engineer, at no additional cost to the Department.
2.The hauling equipment shall consist of trucks equipped for dumping material into spreader boxes or in a windrow. They shall be constructed and maintained to prevent loss of materials during hauling operations.
3.Water Distributors:
a.The distributor equipment sh all provide accurate and uniform distribution of water. The control valves shall close fully to prevent leakage.
b.Water will be measured through a meter or with calibrated tanks in gallons (liters). The weight of the water can also be measured and converted to Megagallons (kiloliters).
4.The equipment used for profiling the subgrades, base courses, and foundation courses shall be capable of meeting Construction Methods.
5.Only compacting equipment and methods which will consistently produce the compaction specified thro ughout the depth of the compacted lifts shall be used. Compacting equipment which produces laminations within the compacted lifts will not be allowed.
6.Equipment used to spread the material shall be capable of distributing the material uniformly.
7.Equipment for weighing loaded trucks shall comply with requirements given in Subsection 503.03.
Source: Nebraska Standard Specifications for Highway Construction, 2017 Edition. Pages 185–186 of 1,048.