Section 828
8-19 Section 828
TEMPORARY STEEL COVER FOR MASONRY DRAINAGE STRUCTURES
828-1 Description
Install temporary steel plate covers on masonry drainage structures in accordance with the details shown in the plans and as directed by the Engineer .
828-2 Materials
Provide materials that are Grade A36 steel and the size and thickness shown on the detail in the plans.
828-3 Measurement and Payment
Temporary Steel Plate Covers for Masonry Drainage Structures will be measured and paid in units of each for the actual number of these items incorporated into the completed and accepted work. Payment will be made under: Pay Item Pay Unit Temporary Steel Plate Covers for Masonry Drainage Structures Each
830-1 Description
This work consists of the general requirements for all unreinforced brick masonry construction. The requirements of Sections 838, 840 and 858 will prevail over any conflicting requirements of this section.
830-2 Construction Methods
Construct all concrete footings and all other concrete elements of the structure i n accordance with Section 825.
830-3 Mortar
Machine mix mortar in accordance with Article 1040 -9 for at least 90 seconds. Remove and dispose of any mortar that has developed initial set or lost plasticity.
830-4 Laying Brick
Dampen brick when necessary to reduce the rate of absorption. Build brick masonry plumb and true to the required dimensions. Place a header course approximately mid height of the structure in structures less than 9 courses high. Place a header course every third course on structures 9 courses high or higher. Use other types of bonding where indicated in the plan s. Completely fill brick joints and cavities with mortar. Make mortar joint thickness at least 3/8 inch and no more than 5/8 inch. Finish joints that will remain exposed after backfill with a concave jointer. Flush cut all other joints. Use spalls or bats only when shaping around irregular openings or when unavoidable to finish out a course. Place a full brick at the corner and place the bat in the interior of the course when necessary to finish out the course. Clean spilled mortar from exposed exterior surfaces not backfilled.
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