Casing. The casing must be securely attached to the book block. The casing must contain a heavy 90# Kraft back line on the spine area. The boards must be Davey Red Label Binder's Board with .097" thickness or an equivalent board as approved by the Agency. The end sheets must be heavy weight. The spine must be loose and rounded. The joints must be uniform and tight and the casing must include adequate gutters.
Casing. Use casings if the elevation of the top of the caissons is at or below the ground or expected high water elevation at any time during construction. If casings are used, set the elevation at the top of the casing a minimum of 2 feet (600 mm) above the ground or 4 feet (1200 mm) above the expected high water elevation at the site, whichever is greater. Cut off any permanent casing used as shown on the Plans. Use casing that is a metal shell of a thickness to withstand handling, internal and external pressures, and that is watertight, smooth and clean. If the elevation of the top of the caisson is below ground level or water level at the time of concrete placement, use an oversize casing from ground elevation to a point below the top of the caisson to prevent soil from caving into the fresh concrete. Do not allow the top of the permanent casing, if required, to extend above the top of the drilled caisson. Use casing in all materials that do not have sufficient strength to safely remain open and stable during and after excavation. When casing is used, do not use casing with an outside diameter less than the specified diameter of the caisson. That portion of the caisson below the casing may be slightly smaller than the normal outside diameter of the caisson. However, use drilling tools to excavate the caisson below the casing that are no smaller than the Plan diameter of the caisson minus 2 inches (50 mm). Do not leave casing in place unless permitted by the Engineer, and cut off any permanent casing as shown on the Plans. Provide adequate equipment during concrete placement to prevent pulling up the reinforcing cage during casing extraction. The casing may be pulled in partial stages. Maintain a sufficient head of concrete above the bottom of the casing to overcome hydrostatic pressure. Extract the casing at a slow uniform rate with pull in line with the center of the caisson. In open-water locations, provide containment at the top of the casing to prevent any material from spilling into the water. Install casing to a depth and in a manner that will produce a positive seal at the bottom of the casing. Do not allow water or other materials, into or out of the excavation area at or below the bottom of the casing. Do not leave casings in place unless permitted by the Engineer. If casings that are to be removed become bound in the caisson excavation and cannot be practically removed, or if the permanent casing is lowered below the proposed tip elevation, drill the...
Casing a. Sinking: Casing shall be driven vertically through earth or other materials to such depth below the surface of the ground as required to maintain the sides of bore holes or as directed by the Engineer. The blows per foot required for the penetration of the casing shall be recorded and included in the Contractor's drill record. Simultaneous washing and driving of the casing will not be permitted, except by order of the Engineer, and where so permitted, the elevations between where water was used in driving the casing must be recorded. It is the Contractor's responsibility when boulders or other obstacles are encountered to carry the drilling through or past such obstacles.
Casing. Use casing that is a metal shell of a thickness to withstand handling, internal and external pressures, and that is smooth and clean. Use casing in all materials that do not have sufficient strength to safely remain open and stable during and after excavation. Extract the casing at a slow uniform rate with pull in line with the center of the Compacted Aggregate Pier.
Casing. If the State owns the surface of the land, the right to acquire the well and casing when the Lessee finds only potable water, and such water is not required in lease operations; and
Casing. Use casing that is a metal shell of a thickness to withstand handling, internal and external pressures, and that is watertight, smooth and clean. If the elevation of the top of the caisson is below ground level or water level at the time of concrete placement, use an oversize casing from ground elevation to a point below the top of the caisson to prevent caving into the fresh concrete. Do not allow the top of the permanent casing, if required, to extend above the top of the drilled caisson. Use casing in all materials that do not have sufficient strength to safely remain open and stable during and after excavation. When casing is used, do not use casing with an outside diameter less than the specified diameter of the caisson. That portion of the caisson below the casing may be slightly smaller than the normal outside diameter of the caisson. However, use drilling tools to excavate the caisson below the casing that are no smaller than the outside diameter of the casing minus 2 inches (51 mm). Do not leave casing in place unless permitted by the Engineer, and cut off any permanent casing as shown on the Plans. Provide adequate equipment during concrete placement to prevent pulling up the reinforcing cage during casing extraction. The casing may be pulled in partial stages. Maintain a sufficient head of concrete above the bottom of the casing to overcome hydrostatic pressure. Extract the casing at a slow uniform rate with pull in line with the center of the caisson.
Casing. Welded frame construction with flush fitting doors and 2-parts panels. - Compression locks to all doors and panels with a special key. - Front access only required for installation and maintenance. - Internal Aluzink components. - All doors and panels are lined with 25 mm non-combustible and non-eroding insulation with thermal and acoustic properties. - Controller display is fitted in front panel.
Casing. In order to prevent the overburden from seeping into the hole from which the core is to be taken, the hollow stem auger or drive casing, as required for Soil Borings, shall be seated tightly on the rock or boulder at the elevation where rock or a boulder is encountered prior to beginning the coring operation. If a stratum of bedrock material is encountered, which in the opinion of the Engineer required penetration and subsequent soil sampling below, blasting with small charges of dynamite will be permitted for the removal of this stratum and small boulders or other obstructions which cannot be conveniently removed otherwise. Before blasting, the augers shall be pulled up at least 8 feet to avoid damage. Blasting will be approved by the Engineer only where it is definitely known that there are no subsurface or surface structures in the vicinity that may be affected and it shall be performed strictly at the Contractor's responsibility. Any damages occurring to any surface or underground structure caused by such blasting will be repaired by the Contractor at no cost to the Department. Any method used to carry the boring through the obstacle other than rock core drilling as required by the Engineer and in excess of 1 foot, shall be considered as Soil Boring and will be measured and paid for at the unit price per linear yard bid in the proposal. If rock core drilling is required, it will be measured and paid for at the unit price per linear yard bid in the proposal for Rock Core Drilling, when the obstacle drilled is in excess of 1 foot. If the Contractor abandons a boring before adequate information is obtained and starts another boring adjacent to it in preference to carrying the boring through the obstacle, or because of a shattered or misaligned casing, no payment will be made for the work done on the abandoned boring.
Casing. 1. Casings die formed, minimum 20 GA galvanized steel and finished in baked enamel. 2. Bottom panel removable to provide service access to burners, pilot and orifices. 3. Pilot accessible through side panel access plate.
Casing. When pipe, casing, diamond set articles or casing shoes are lost or left in a hole on the instructions of the Company’s representative, the Company will pay the Contractor for such materials at cost plus 10%, provided that, if casing or articles described as drill tools in subsection 2.9 are not in new or near new condition, the replacement cost payment will be at a discounted rate mutually agreed by the Company and Contractor, based on the wear condition of the items lost or left in the hole on instruction of the Company representative.
