Contractors World

Contractors World
The online digital publication for
construction, demolition, mining and quarrying industries.

Contractors World 2010 Volume 1 Issue 7
Forward: Print Page Register (free) Bookmark Page

cw cw cw cw cw Buyers Guide cw cw cw
cwmags blog
previous page   PAGE 14    next page

back copies


Sponsor a tree
by planting
your logo
in our
virtual forest
to aid the
Lighthouse Club
Benevolent Fund

USA Concrete pumped slabs for fast track solar panel plant . . cont

The Super X outriggers used on the Schwing long booms have as much as 12.5% less outrigger soil pressures than other models.“ The Super X one-piece outriggers also allow a 25% smaller footprint and telescope out and around job site obstructions. Compact machines made for safer working

Aldrich noted, “The Super X outriggers used on the Schwing long booms have as much as 12.5% less outrigger soil pressures than other models.“ The Super X one-piece outriggers also allow a 25% smaller footprint and telescope out and around job site obstructions.

This has been an asset for the pumping crews on the hemmed in site. “Safety is always a major concern for Albanese,” states Aldrich, “We believe in ACPA certification of our pump operators and I’m sure that is a plus when we are considered for these projects.”

ACPA guidelines call for recertification within two years for all operators, which Albanese endorses, “The newer operators have a higher safety awareness. It is the veteran operators that may have become too routine in their actions and need an occasional refresher.”

Added work for the pumping crews came in the form of 26,377 m³ of controlled density fill. “Because the top of some of the mat slabs were 2 m below grade, they were going to add dirt and a course of pea gravel to elevate the grade,” Aldrich explains, “This cementious controlled density fill is a pumpable product that does not require compaction and went in fast while providing better support.”

The crew also pumped 2,294 m³ of walls below grade as permanent forms for the flowable fill.

The 305 mm topping slabs were pumped in a checkerboard fashion. These pours were 3 m by 58 m with machine finishing to a FF40 flatness specification.

The 100 mm slump concrete is being provided along with the 2nd floor and roof concrete by Cemex. Currently, concrete placement is occurring in all sections of the building from slabs on grade to second story decks and the roof.

The company reports no downtime on the pumps which utilize a slow-stroking design with 10-inch diameter, 98-inch stroke material cylinders for smooth output and less wear. “Whether it was the 58 with full five-inch line or the 61 with its four and one-half inch pipe, the pour rate was never held up by the pumps,” Aldrich stated.

Pumping was done throughout the night due to transport restrictions durign the day.     In the ultra-environmentally sensitive climate on construction sites today, the requirements for clean-out were even more strict on the Solyndra project. A lined pond was provided by the general contractor for wash-out.

The Schwing Rock Valve requires less water for the rinsing process, than other valve types; this helps project personnel to maintain the level of the washout pit.

Albanese owns more than 400 pieces of construction equipment including excavators, scrapers, loaders, backhoes and paving machines in addition to their concrete pumps. Their employee roster numbers more than 800 for the work.

“We bought the Schwing 61 for a bridge job four years ago and it wasn't long before we bought a 58-m,” recalls Aldrich. Two years ago, a customer needed a long boom for an unexpected 380 m³ afternoon pour and called at eight in the morning. “We were able to free up one of our pumps and put together a placing crew to get it done.” The company has grown its pumping fleet from four pumps seven years ago to their current fleet size. This has been made possible by pumping for other concrete contractors in the area.

Concrete placement continued on the Solyndra Fab 2 site until May 2010 when fitting out could begin. This will complete Phase 1 of what promises to be further plant expansion for the manufacturing of the company’s popular cylindrical, photovoltaic, thin film systems.

The new facility will enable Solyndra to fulfil its announced contractual backlog of over $2 billion and create additional jobs. Solyndra's two Fabs in northern California will produce enough solar panels over their lifetime to cut over 350 million tonnes of CO2 emissions or 850 million barrels of oil. The 500 megawatts generated by their annual output of solar panels is enough electricity to supply 150,000 homes.

Project:
Solar Panel Manufacturing Plant, Fremont, CA, USA
Owner:
Solyndra, Inc., Fremont CA, USA
Architects:
STUDIOS Architecture, San Francisco, CA, USA
General Contractor:
Rudolph and Sletten, Redwood City, CA, USA
Concrete and Pumping Contractor:
Joseph J. Albanese, Inc., Santa Clara, CA, USA
Equipment:
Schwing S 47 SX , S 58 SX and S 61 SX truck-mounted concrete pumps with placing booms

Schwing America

Schwing America 561SX Concrete Pump
Schwing America 561SX Concrete Pump

 

Schwing America 558 Concrete Pump
Schwing America 558 Concrete Pump

 

Schwing America 545SX Concrete Pump
Schwing America 545SX Concrete Pump

 

previous page   PAGE 14   next page

 
red divide
CW Contractors World - the digital publication for construction industry

Contractors World Magazines are published by VVV Limited
©VVV Ltd 2010 All Rights Reserved

Publisher: Roger Lindley
Content compiled and edited by:
Roger Lindley MCIM
Nick Johnson

CP&E Contractors Plant & Equipment
Read our other publication for up-to-date information on new plant and equipment.
CLICK HERE


cmldir.com
Online Buyers Guide of Construction, Quarrying & Mining Suppliers

Contractors World - Eco Friendly publishingBy reading this page on line you are helping to save trees.
Trees saved up to June30, 201: >105
See our
virtual forest



Support the Lighthoue Club Benevolent Fund by sponsoring virtual trees Support the Lighthouse Club Benevolent Fund by sponsoring virtual trees


CONTRACTORS WORLD MAGAZINES
CML House
7 Bell Mead
Sawbridgeworth
Herts CM21 9ES
UK
Tel: +44 1279 600598
Email: info@cwmags.com
URL: http://cwmags.com

To advertise in Contractors World see details at   http://www.contractorsworld.info/support/advertising-uk.php

Contractors World, CP&E - Contractors Plant & Equipment and the CW Supplements are independent publications published through CWMags.

The mention of companies and/or products within the editorial pages or in advertisements does not infer any endorsement by the publisher or editors. All editorial is freely given, without conditions and at the sole discretion of the editor. Opinions expressed by contributors are not necessarily those of the publishers. Copying, reproduction, decoding or disassembly of content or computer code by any means of any part of the publication is prohibited unless prior approval is provided by VVV Ltd in writing and confirmation received of agreement with any terms and conditions applicable. PDF version may be downloaded for personal use but no content may be used for promotional purposes or copied to web sites.