Article 1 — Description
Furnish and install temporary shoring to hold the surrounding earth, water, or both out of the work area.
Article 2 — Materials
Furnish new or used materials. F urnish materials that meet the requirements of Item 410, “Soil Nail Anchors,” or Item 411, “Rock Nail Anchors ,” when using temporary nailed walls (rock or soil) .
Article 3 — Construction
The Contractor is responsible for the temporary special shoring design u nless complete details are shown on the plans. S ubmit details and design calculations bearing the seal and signature of a licensed professional engineer before constructing the shoring. The Department reserves the right to reject designs. Design the shoring to comply with OSHA Standards and Interpretations, 29 CFR Part 1926, Subpart P, “Excavations.” Design structural systems to comply with AASHTO Standard Specifications for Highway Bridges or AASHTO LRFD Bridge Design Specifications . Design shoring subject to railroad loading to comply with the AREMA Manual for Railway Engineering and any additional requirements of the railway being supported. Provide vertical or sloped cuts, benches, shields, support systems, or other systems to provide the necessary protection in accordance with the approved design. Construct temporary nailed walls (rock or soil), when used, in accordance with Item 410 or Item 411.
Article 4 — Measurement
This Item will be measured by the square foot of surface area of a vertical plane at the face of the shoring between the top of the ground being supported and the minimum protection grade line shown on the plans. If no minimum protection grade is shown on the plans, the lowest required excavated elevation will be used. Shoring projecting above the level of the ground being supported will not be measured. When excavation techniques (e.g., sloped cuts or benching) are used to provide the necessary protection, the surface area for payment will be calculated based on the area described by a vertical plane adjacent to the structure.
Article 5 — Payment
The work performed and materials furnished in accordance with this Item and measured as provided under “Measurement” will be paid for at the unit price bid for “Temporary Special Shoring.” This price is full compensation for excavation and backfill; furnishing, placing, and removing shoring, sheeting, or bracing; de-watering or diversion of water; jacking and jack removal; and equipment, labor, materials, tools, and incidentals. No payment will be made for special shoring made necessary by the selection of an optional design or sequence of work that creates the need for shoring.