technical Speciiications FY2019 Paving Program
ITEM 604.46 ~ REPLACE CASTING
A. SCOPE
covers, and catch basin frames and grates as shown on the drawings or as directed by the
Engineer. Any repair needed to the existing structure within the 12 inches below the bottom of
the casting shall be included and performed under this item, Any further repair needed to the
existing structure shall be performed under Item 604.4.
B. MATERIALS AND CONSTRUCTION
This item shall include all labor, materials (except for frames and covers), equipment, and
transportation necessary to replace castings, and to set them at new overlay elevation. Frames,
covers, and grates will be provided by the City of Nashua at 9 Stadium Drive in Nashua. This
restoration work.
All materials, labor, equipment, and transportation required to excavate, to lower structure,
temove the plate and place plate at locations of castings lowered to facilitate reclaim or milling
operations shall be subsidiary to Item 604.47. The Contractor is responsible for the management
of stormwater to all structures altered/dropped for paving operations for the duration of the
Project until final pavement has been placed and accepted by the City and/or the Engineer,
Mortar shall comply with NHDOT Section 707. Brick shall comply with NHDOT 604.2.4 and be
AASHTO M91 Grade SS brick. Contractor shall provide the City with material slips certifying
that brick meets requirements.
Mortar shall be tooled into every vertical joint between bricks prior to installing a new horizontal
brick layer. Mortar between brick layers shall be 3/8” thick and fully cover all bricks in the layer.
Use of the weight of castings and additional brick layers to facilitate joint filling and further
spreading of mortar is not permitted. All brickwork shall be sealed on the outside and inside of
All mortar shall be mixed with a cement mixer as approved by the Engineer. Mixing mortar by
hand/shovel will not be permitted.
