4-24 drain of subdrain fine aggregate at least 1 foot square in cross section at each weep hole to an
elevation 2 feet below the subgrade or surface of the embankment.
414-9 Measurement and Payment
The prices and payments below will be full compensation for all items required to complete box culvert excavation including, but not limited to, those items in Article 414- 1. Foundation Conditioning Material, Box Culvert will be measured and paid in tons of material that is placed within the established limits. The number of tons of material is determined by weighing the material in trucks in accordance with Article 106 -7. No deduction will be made for any moisture contained in the material at the time of weighing. Such price and payment will be full compensation for all excavation made below the bottom of the barrel and wing footings in addition to furnishing, hauling and placing the foundation conditioning material. Box Culvert Excavation, Sta. ____ will be paid at the contract lump sum price. No measurement for payment will be made for this pay item, and no adjustment in the contract lump sum price will be made unle ss the size, length, elevation or location of the culvert is revised. If the size, length, elevation or location of the culvert is revised , such revision will be an alteration of plans or details of construction in accordance with Article 104- 3. Where it is necessary to provide backfill material from sources other than excavated areas or borrow sources used in connection with other work in the contract, payment for furnishing and hauling such backfill material will be paid as extra work in accordance with
Article 104 — 7. Placing and compacting such backfill material is not extra work but is incidental
to the work being performed. Payment will be made under: Pay Item Pay Unit Box Culvert Excavation, Sta. ____ Lump Sum Foundation Conditioning Material, Box Culvert Ton
416-1 Description
Excavate any material outside of the pay limits of foundation excavation, unclassified structure excavation or box culvert excavation, which is classified as channel excavation in the plans. Place suitable excavated material as directed by the Engineer , drain and divert water, pump, blast, haul, dispose of materials and backfill. Do not deposit excavated materials, nor construct earth dikes or other temporary earth structures in rivers, streams or impoundment or so near to such waters that they are carried into any river, stream or impoundment by stream flow or surface runoff.
416-2 Construction Methods
Notify the Engineer a sufficient time before beginning the excavation so measurements may be taken of the undisturbed ground. Do not disturb the existing ground without per mission. Remove and dispose of boulders, vegetative material and any other objectionable material. Use and place suitable excavated material in accordance with Articles 410 -7 and 410- 8.
416-3 Measurement and Payment
Channel Excavation will be measured and paid on a cubic yard basis. Materials will be measured in their original position within the limits described below and computed by the average end area method, that are acceptably excavated in accordance with the contract or as directed by the Engineer . The upper limits for measurement are the actual ground surface at