Foundation Specifications 0042

Sub Sections: 1 2 3 4 5 6 7 8 9 10 11 12
Pages: 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50

Our techniques apply when adding new structures: especially rock anchor, microfine cement, soil nailing, micropile installations for foundation support. We specialize in slope stabilization, anchors, permeation grouting, foundation repair and support, grouting, soil nails, rock drilling, micropile installations, and sinkholes. We use a problem-solving approach geotechnical architecture of buildings, bridges, water plants, sewage plants, tunnels, sinkholes, caisson, shoring, underpinning, agriculture, and roads construction. We are experienced in these applications: micro piles, sinkhole repair, permeation grouting, pressure grout, soil nails, chemical grouting, micropiles, compaction grout, and rock anchors. Our specialties are rock anchor, acrylamide and compaction grouting, mini piles, sinkhole repair, micropiles, acrylamide grouting, and soil nailing. We will continue to dedicate ourselves to excellence, including insurance mortgage, in our performance, in our integrity, and in our relationships with our customers. We will carefully weigh our decisions, actions, and results to make sure that we remain the most trusted name in the geotechnical contracting industry. Please visit our website http://www.rembco.com/. Add Concrete Construction URL

CALTRANS FOUNDATION MANUAL

structure construction. The loading consists of an embankment constructed to specified

limits. The Structure Foundations Branch will determine the need to pre-load the founda-

tion area, specify the limits of the embankment, and set forth the duration of the settlement

period in the contract Special Provisions.

When settlement periods in excess of 30 days are specified, settlement platforms will usually

be required. The Foundations Testing and Instrumentation Section will furnish and

supervise the installation of the settlement platforms (Refer to Appendix C for California

Test 112 - Method for Installation and Use of Embankment Settlement Devices). A change

order written by the Engineer to compensate the Contractor for the initial installation of the

settlement platforms will be required.

For settlement periods of less than 30 days, the Structure Representative may install

settlement hubs in the top of the bridge embankments. The Structure Representative can

then monitor and record the hub elevations weekly. Because the Structure Representative is

responsible for terminating a settlement period, data from the hub elevations can be used to

determine when this should take place. At the end of the 30 day settlement period, if

settlement is still taking place, the settlement period should be extended until settlement

has ceased. However, if no settlement has occurred during the last week or two of the

settlement period, the Structure Representative should terminate the settlement period at

the end of the 30 day period or may alternatively elect to shorten the length of the settle-

ment period. The Contractor should be notified of this decision in writing.

Construction and Inspection

In order to anticipate possible future foundation problems and then formulate some

possible solutions before construction begins, the Structure Representative should review

and have a complete understanding of all contract documents. As soon as practical, the

Contractor should also be reminded that footing elevations shown on the plans are approxi-

mate only and foundation modifications are possible. The Structure Representative should

draft a letter reminding the Contractor of the provisions stated in Section 51-1.03 of the

Standard Specifications (refer to Appendix C for sample letter).

The Structure Representative should then review the following documents:

Contract Plans.Check footing elevations and adequate cover, design bearing pres-

sures, special treatment of foundations, proximity of utilities, existing structures,

highways and railroads, etc.