Dan ambuhl specifications engineer caltrans l.jpg
Advertisement
This presentation is the property of its rightful owner.
1 / 12

Dan Ambuhl, Specifications Engineer, Caltrans PowerPoint PPT Presentation

Dan Ambuhl, Specifications Engineer, Caltrans Selected Special Provisions Welding Structural Steel Audits Temporary Towers Mass Concrete Cable System Steel Structures Main Span Steel Structures YBI Applies to all Structural Steel Contractor responsible for QC CT has prerogative for QA

Download Presentation

Dan Ambuhl, Specifications Engineer, Caltrans

An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -

Presentation Transcript


Dan ambuhl specifications engineer caltrans l.jpg

Dan Ambuhl, Specifications Engineer, Caltrans


Selected special provisions l.jpg

Selected Special Provisions

Welding

Structural Steel Audits

Temporary Towers

Mass Concrete

Cable System

Steel Structures Main Span

Steel Structures YBI


Welding l.jpg

Applies to all Structural Steel

Contractor responsible for QC

CT has prerogative for QA

Welding


Welding qc l.jpg

QC Plan is required

Quality Control Plan

CT Qualification Requirement

All UT personnel must be qualified by CT

QC Inspector shall represent Contractor

Document Submittals

Welding QC


Welding qa l.jpg

Quality Assurance at Engineer discretion

QA Inspector shall represent Engineer

Welding QA


Structural steel audit l.jpg

Steel Audits

General Steel Meeting

Contractor’s Self Audit

CT Audit

Structural Steel Audit


Temporary towers l.jpg

Temporary Towers

Footings

Timber piles will not be allowed

Driving system submittal is required

Dynamic monitoring is required

Towers

Specified to be made of steel

Working drawings will be required

Buy America does not apply to temporary works


Mass concrete l.jpg

Consists of portions of piles, pile caps, pier columns and cap beams.

Thermal Control Plan is required

Demonstration pours are required

Mass Concrete


Cable system l.jpg

Cable System

Cable Wire Rod

PPWS Strand

S-Wire Cable Wrapping

Corrosion System

Suspender System

Cable System


Steel structures main span l.jpg

Typical Structural Steel

Girders, plates, connections

Full Scale Mock ups will be required, for details shown on the plans

Steel Structures Main Span


Steel structures main span11 l.jpg

Steel Structures Main Span

Non Typical Structural Steel

Hinge Pipe Beams

Castings

Tower Saddle may be cast in max. of 3 pieces

Modular Joint Seal Assemblies, Circular Segmented Bearings

Travelers

Substation components & service platforms


Steel structures ybi l.jpg

All structural steel is on the Temporary Detour Structure

Buy America does not apply to temporary structures

Steel Structures YBI


  • Login