CATEGORY 400 STRUCTURES SECTION 419 — SUBFOUNDATION INVESTIGATION
419.01 Description
Conduct an investigation to verify the character and suitability of the subfoundation material for foundation purposes.
419.02 Materials
Not applicable.
419.03 Construction
Drill test holes per T 206 and T 225 at least 10 working days prior to excavation or pile driving in that area. Notify the Engineer at least 10 working days prior to drilling. Drill holes at the locations and to the depths specified. Record all information on the Administration’s boring log Form No. SHA 73.0-46, available from the Office of Materials Technology. Provide an approved geologist or a geotechnical engineer that is a professional engineer registered in the State of Maryland to ensure that the test holes conform to these Specifications. Submit the drilling results within two working days after drilling any given hole. Within five working days after receipt, the Engineer will evaluate the subfoundation investigation to determine if any change in the as-planned excavation is necessary. Do not begin excavation until the Engineer’s evaluation is received for that particular foundation.
419.04 Measurement and Payment
Subfoundation Investigation will be measured and paid for at the Contract unit price per linear foot for the actual total length of holes drilled. The payment will be full compensation for the geologist or geotechnical engineer services, and for all material, labor, equipment, tools, and incidentals necessary to complete the work. 2025 STANDARD SPECIFICATIONS FOR CONSTRUCTION AND MATERIALS 420 — PORTLAND CEMENT CONCRETE STRUCTURES CATEGORY 400 STRUCTURES SECTION 420 — PORTLAND CEMENT CONCRETE STRUCTURES
420.01 Description
Furnish, place, finish, and cure concrete bridges, culverts, and miscellaneous structures including cofferdams, forms, and falsework.
420.02 Materials
Curing Materials 902.07 Form Release Compound 902.08 Concrete Mixes 902.10 and 420.02.04 Grout 902.11 Linseed Oil 902.12 Drains, Downspouts, Weep Holes, and Pipes Section 905 Reinforcement 908.01 Cast Iron Scuppers 909.04 Anchor Bolts 909.06 Steel Forms Which Remain in Place 909.11 Joint Sealer 911.01 Preformed Joint Fillers 911.02 Preformed Elastomeric Joint Seals 911.04 Water Stops and Flashing 911.08 and 913.05 Production Plants Section 915 Fusion Bonded Epoxy 917.02 Water 921.01 Epoxy Bonding Compound 921.04
420.02.01 Admixtures. Do not use calcium chloride or other admixtures containing chloride salts
in concrete placed on steel bridge deck forms.
420.02.02 Requirements for Accessories. Ensure that accessories such as inserts and ties that
will remain in completed superstructures within the top 5 in. of final deck slab concrete are either epoxy coated or made of material other than aluminum that will not rust. These same requirements 2025 STANDARD SPECIFICATIONS FOR CONSTRUCTION AND MATERIALS