slideshow

Slide1: 

San Francisco-Oakland Bay Bridge East Span Seismic Safety Project In Bay Foundation/SAS Superstructure Constructability Workshop Nov. 20, 2002

In Bay Foundation/SAS Superstructure Constructability Workshop : 

In Bay Foundation/SAS Superstructure Constructability Workshop

November 20, 2002Holiday Inn Bay Bridge1800 Powell StreetEmeryville, California: 

November 20, 2002 Holiday Inn Bay Bridge 1800 Powell Street Emeryville, California

9:00 Welcome9:05 Opening Remarks9:15 Where we are now9:30 Business Enterprise Outreach9:45-10:30 Technical Issues/Changes since May 13, 20021030-1045 Break10:45-1:00 Open discussion with contractors regarding above mentioned issues : 

9:00 Welcome 9:05 Opening Remarks 9:15 Where we are now 9:30 Business Enterprise Outreach 9:45-10:30 Technical Issues/Changes since May 13, 2002 1030-1045 Break 10:45-1:00 Open discussion with contractors regarding above mentioned issues

Who are we?: 

Who are we? SFOBB Project Manager Heavy Civil Construction Contractors Fabricators, Suppliers

Why are we here?: 

Why are we here? meeting is mechanism to inform the contracting community of the upcoming SAS Superstructure and In Bay foundation contracts. meeting is a way to create a dialogue with contractors, especially on issues of concern. for example we heard at May 13, 2002 workshop, mobilization payment for an "over the water" job does allow an acceptable cash flow for primes. We effected a change to the Public Contract Code for jobs of $25 million over water

Tools: 

Tools PowerPoint Meeting notes Handouts

Ground Rules: 

Ground Rules no decisions to be made discussion only to take place speakers keep to their time dialogue to follow decorum in order to create an atmosphere of respect

What can we accomplish: 

What can we accomplish understand changes made to Construction Contract since May 13, 2002 meeting understand Contractor Constructability concerns with In Bay Foundation and SAS Superstructure Contracts

Other Introductions: 

Other Introductions Brian Maroney - Project Manager Mike Halverson and Rob Kobal : note takers Bill Zanetich - Duty Senior Design Team

Bid Schedule: 

Bid Schedule

Slide12: 

Project Limits

Slide13: 

YBI SAS SKYWAY OAKLAND TOUCHDOWN Existing Bridge

SAS/YBI Discretization: 

SAS/YBI Discretization Smaller contracts that focus specific types of construction work create more opportunities for DBE and small business participation

Slide15: 

Yerba Buena Island T1/E2 foundations (04-0120E4) T1 E2 W2 foundation (04-0120C4) Building demolition (04A1701) YBI/SAS Contracts Transition structure (04-0120H4) SAS superstructure (04-0120F4) Retrofit/Substation (04-0120G4)

Slide16: 

San Francisco-Oakland Bay Bridge East Span Seismic Safety Project

W2 Structures 04-0120C4: 

W2 Structures 04-0120C4 bid open December 10, 2002 Gross Quantities 16,000 cubic meter structural excavation 12,000 cubic meter structural concrete 2,300,000 kg bar reinforcing steel 258,500 kg structural steel

YBI Substation & Retrofit 04-0120G4: 

YBI Substation & Retrofit 04-0120G4 advertise the YBI Substation and Viaduct Retrofit in December, 2002 Bid Open Feb 25, 2003 Gross Quantities 66,900 kg bar reinforcing steel 350 cubic meter structural concrete

SAS E2/T1 Structures 04-0120E4: 

SAS E2/T1 Structures 04-0120E4 Gross Quantities 1640 cubic meter structural concrete, bridge 3,960,000 kg structural steel (bridge) 2,550,000 reinforcing steel 62 structure plans sheets, 100 log of test borings

SAS Superstructure 04-0120F4: 

SAS Superstructure 04-0120F4 Gross Quantities 8000 cubic meter structural concrete 42,600,000 kg structural steel (corrected Nov 25, 2002) 1,349,000 kg bar reinforcing steel 600 structural plans sheets

YBI Superstructures 04-0120H4: 

YBI Superstructures 04-0120H4 Gross Quantities 54,700 cubic meter structural concrete 9,800,000 kg bar reinforcing steel 250 plans sheets

Oakland Touchdown 04-012044: 

Oakland Touchdown 04-012044 Gross Quantities 14,500 cubic meter structural concrete 3,400,000 bar reinforcing steel kg 300 + plans sheets

Business Enterprise: 

Business Enterprise exceed goals participate and document Outreach to inform the contracting community which includes primes, subcontractors, suppliers and business enterprises on Construction Contract out to bid Jan 7, 2003 5:30 p.m. at District 4 and Jan 8, 2003 12:30 pm in South San Francisco

Slide24: 

San Francisco-Oakland Bay Bridge East Span Seismic Safety Project

Technical Issues/Changes since May 13, 2002    : 

Technical Issues/Changes since May 13, 2002 presented by Brian Maroney May 13, 2002 Constructability Workshop November 20, 2002 is last workshop before SAS Superstructure advertises

May 13, 2002: 

May 13, 2002 mobilization bonding * wire * welding * certification Buy America* temporary ramp on YBI Domestic Fabrication of SAS box and tower tower erection Jones Act schedule *

Mobilization Payments: 

Mobilization Payments Caltrans recognizes significant front end mobilization cost for complex marine projects Amend Section10264 of Public Contract Code, Add Section 284 to the Streets and Highway Code, relating to public works Chaptered September 27, 2002 over water and over $25 million

Mobilization Payments: 

Mobilization Payments specification prepared and to be inserted into 04-0120F4 and 04-0120E4 Public Contract Code language in handout

Bonding    : 

Bonding Caltrans recognizes that for very large projects the current bonding market has constraints Proposed legislation to reduce payment bond from 100% to 50%, possible bonding cap pursuing every opportunity

Wire : 

Wire waiver from buy America

Welding/Tolerance: 

Welding/Tolerance ongoing

Steel Fabricator Certification: 

Steel Fabricator Certification Caltrans recognizes importance of early approval currently developing specification language for partial payment for early approvals of Fabricator Shop Audits see handout, very very draft

Buy America : 

Buy America main cable wire supplier can this project be fabricated domestically allow “alternative bid” process for Buy America, foreign source total bid (foreign steel) bid lower by 25% domestic total bid (domestic steel) bid temporary works

Buy America Waivers : 

Buy America Waivers PPWS Strand (includes production of wire rod) Tower Saddle (single cast upper portion of 175 tons) S-Wire cable wrapping Macalloy bars - 75 mm dia high strength A722 bars ( w2, bent and hinge)

Jones Act 46 U.S.C. App Section 883 : 

Jones Act 46 U.S.C. App Section 883 see handout issue - foreign crane, domestic barge coastwise trade violation holding - not - provided barge meets issue - foreign crane, foreign barge coastwise trade violation holding - is a use

Temporary Structures on YBI : 

Temporary Structures on YBI

Domestic fabrication of tower and box : 

Domestic fabrication of tower and box

Tower Erection  : 

Tower Erection Two bolted splices added to tower from survey of US cranes Regions of allowable welded field splices identified on the plans

SAS Box Superstructure field splices : 

SAS Box Superstructure field splices we want to minimize field splices low bidder discretion allowed

Schedule: 

Schedule Cert. Shop drawing review/approval begin fabrication cable erection

Shop drawing review  : 

Shop drawing review considering milestone payment for shop drawing approval exploring ways to expedite Caltrans processes CT engineer in contractor’s engr. Office to work together

Shop drawing review : 

Shop drawing review staged processing at Caltrans streamlining Caltrans decision-making process re shop drawing technical decisions Campus approach of CT office next to contractor’s office encourage partnership between Caltrans and Contractor Early meeting

Sole Source Items : 

Sole Source Items Macalloy bars - 75 mm dia high strength A722 bars Swivel joint seal assembly Epoxy Asphalt Concrete (deck surface riding on steel box) Tower Saddle (single cast upper portion of 175 tons) S-Wire cable wrapping Suspension cable paint system (noxide paint)

Payments for materials on site: 

Payments for materials on site distribution of cash flow over life of project if in United States see handout

What if seismic event during construction?: 

What if seismic event during construction? reduce risk to contractor in case of earthquake, new limit is 5% contract amount, cap at $20 million

Bidders not liable for terrorism: 

Bidders not liable for terrorism terrorism bidder inquiry see handout

Under Development: 

Under Development modified the TRO spec to provide for a max of 15% ( bid amount divide by number of working days bid) for progress payment purposes in lieu of standard 20%, see handout Caltrans will work with contractor on electronic submittal stipend to do engineering during bid

Mass Concrete  : 

Mass Concrete thermal control plan adds flexibility ACI methods were created for very very large elements

South - South Detour: 

South - South Detour Mixed message for industry Some want in on design of detour Others will not perform design

Oakland Touchdown: 

Oakland Touchdown well over 100 million discretize to ? west bound and east bound contracts west bound east bound frame (in water) *******

Other Issues: 

Other Issues s-wrap desired because of maintenance appeal locks out moisture it’s a better surface for painting PPWS goes up faster, less air, less water, less splices Caltrans is anxious to hear any aerial spun cable option - Contractors must show reasonable support on anchorage strand jacks, space issue

 space is an issue: 

space is an issue

Open Discussion with Contractors: 

Open Discussion with Contractors 10:45am – 1:00pm your chance to express concerns over what you’ve learned today your chance to let us know what your questions are

What do contractors think: 

What do contractors think schedule Interface with adjacent projects Construction oversight from a distance weather days submittal fabrication overlap Environmental protections shop certification

What do contractors think : 

What do contractors think Business Enterprise Is bonding a no bid item? Shop drawing review Number of bidders

Are there any Constructability issues?: 

Are there any Constructability issues? Erection sequence Tolerance welding Buildability