AE Pre-Bid Notes_12APR2012.pdf

BASE: Pittsburgh IAP ANG Base STATE: PA

PROJECT NUMBER: JLSQ972016A

TITLE: REPAIR AIRCRAFT APRON

Pennsylvania Air National Guard – 171st Air Refueling Wing

The Base has two aprons, East and West, with each apron connected to the Pittsburgh International Airport by East Taxiway and West Taxiway. The two aprons are connected by the East-West Connector. In general, the aircraft enter by the West Taxiway and exit by the East Taxiway. The West Apron provides access to the hangars.

Base Bid: Remove and replace concrete slab sections; repair concrete slabs, both full depth and partial depth, remove and replace joint sealants; paint markings; remove and replace bituminous shoulder along East Apron, including removal, storage and reinstallation of taxiway lights; Drawing C-119 for installation of manhole and storm piping along throat of East Apron;

Drawing C-120 for repair of trench inlets at south end of East Apron

Additive Bid Item #1: West Overflow Apron - remove and replace joint sealant and repair concrete slabs (Drawing C-107)

Additive Bid Item #2: Complete eradication of all paint lines (Drawing C-110)

Phasing for the project shall be coordinated with the Base personnel.

Drawing C-101 is site plan with overview of project site.

Drawing C-102 not used.

Drawing C-103 is for general information of the existing pavements

Drawings C-104 to C-109 provide the locations of the concrete slabs to be replaced or repaired.

A grid system was used to identify the different slabs. The East Apron grid is straight-forward due to its basically rectangular shape. The West Apron grid follows the previously determined identification system with the apron being divided into eight sections.

Legend for Repairs:

C for crack repair and suffix indicates length of crack F for full depth repair minimum of 24 by 24 and suffix indicates larger repair section in SF JT for joint sealant repair P for partial depth repair minimum of 8 by 8 and suffix indicates larger repair section in SF R for complete slab replacement S for popout repair 6” diameter T for crack repair at trench drains

Drawings C-110 to C-113 for the paint markings.

Drawings ES-101 to ES-104 are the erosion and sedimentation control plans and details approved by the Allegheny County Conservation District.