2010 Construction and Material Specifications - Ohio Department of ...

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208.02
208.02 Regulations on the Use of Explosives. Perform all blasting operations
according to all applicable Federal, State, and local laws and regulations, and the
provisions of 107.09. These regulated blasting operations include but are not
limited to the following:
A. Storage and handling of explosives, blasting agents, and detonators.
B. Use of explosives in character and amount as allowed.
C. Storage plan, including the type of magazine or explosive storage facility to
be used on the job site.
D. Record keeping, placarding, safe distances, and all other requirements
concerning storage.
E. Obtaining and displaying magazine permits.
208.03 Product Specifications. Be aware that delay elements in blasting caps
may deteriorate with age. Aged explosives are known to deliver much less than
the rated energy.
If evaporation occurs or if improperly mixed, bulk explosives (such as
ammonium nitrate and fuel oil) may not contain the proper amount of diesel oil.
Low diesel oil drastically reduces the energy content of the explosive and
commonly produces reddish brown or yellow fumes upon detonation even in dry
blast holes.
Use products conforming to manufacturers’ specifications. Ship the
manufacturer recommended expiration dates with the products delivered to the
project. Do not use any blasting product that is either excessively old or in a
deteriorated condition. Cease all work until the product’s age or quality is
determined.
208.04 Stabilization. Remove or stabilize rock along the cut face that is loose,
hanging, or creates a potentially dangerous situation during or upon the completion
of the excavation in each lift. Do not drill the next lift until this work is
performed.
208.05 Blasting Plan Submittal. Submit three copies of the Blasting Plan to
the Engineer and one copy of the Blasting Plan to the Office of Construction
Administration for review at least 2 weeks before beginning drilling and blasting
operations, or at any time the drilling and blasting methods change. If the drilling
and blasting methods change, submit four copies of the changed sections one week
prior to the work.
The Blasting Plan shall include, at a minimum, the following:
A. General details of the drilling and blasting patterns and controls proposed to
use for both the controlled and production blasting.
B. Station limits of proposed shots. Critical distances to structures. Place the
pre-blast survey limits detailed in 208.14 on the Right-of-Way or plan view sheets.
C. One plan and section view per main excavation cut of the proposed typical
range of drill patterns including a range of free face, burden, blast hole spacing,
blast hole diameters, blast hole angles, lift heights, and subdrill depths.