1042.1 Laboratory Testing Guidelines for Sec 1042: Difference between revisions

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This article establishes procedures for inspecting, sampling, testing and reporting materials used in the construction of [[:Category:903 Highway Signing|highway signs]].  Refer to [http://www.modot.mo.gov/business/standards_and_specs/Sec1042.pdf Sec 1042] for MoDOT's specifications.   
This article establishes procedures for inspecting, sampling, testing and reporting materials used in the construction of [[:Category:903 Highway Signing|highway signs]].  Refer to [http://www.modot.org/business/standards_and_specs/SpecbookEPG.pdf#page=14 Sec 1042] for MoDOT's specifications.   


==1042.2.1 Inspection and Sampling Procedure==
==1042.1.1 Inspection and Sampling Procedure==


The inspector shall observe the facilities at the sign fabrication plant and shall determine if the quality of workmanship and materials used in all phases of the fabrication of highway signs are in compliance with Sec 1042. When materials are sampled for Laboratory testing, the samples shall be taken by, or under the direct supervision of the inspector. The inspector shall use all possible care to insure that the samples are uncontaminated and are representative of the materials to be used.
The inspector shall observe the facilities at the sign fabrication plant and shall determine if the quality of workmanship and materials used in all phases of the fabrication of highway signs are in compliance with Sec 1042. When materials are sampled for Laboratory testing, the samples shall be taken by, or under the direct supervision of the inspector. The inspector shall use all possible care to ensure that the samples are uncontaminated and are representative of the materials to be used.


Each sample submitted to the Laboratory shall be accompanied by identification through SiteManager containing all pertinent information.
Each sample submitted to the Laboratory shall be accompanied by identification through AASHTOWARE Project (AWP) containing all pertinent information.


===1042.2.1.1 Aluminum Flat Sheets, Extruded Shapes and All Nuts, Bolts, and Washers===
===1042.1.1.1 Aluminum Flat Sheets, Extruded Shapes and All Nuts, Bolts, and Washers===


The inspector shall obtain copies of the manufacturer's certifications covering all metal materials to be used. The inspector shall determine if these certifications are in full compliance with [http://www.modot.mo.gov/business/standards_and_specs/Sec1042.pdf Sec 1042] and that the certifications cover a sufficient quantity of each material to complete all the signs for the project.
The inspector shall obtain copies of the manufacturer's certifications covering all metal materials to be used. The inspector shall determine if these certifications are in full compliance with [http://www.modot.org/business/standards_and_specs/SpecbookEPG.pdf#page=14 Sec 1042] and that the certifications cover a sufficient quantity of each material to complete all the signs for the project.


===1042.2.1.2 Reflective Sheeting===
===1042.1.1.2 Chromate Conversion Treatment of Aluminum Panels===
 
The inspector shall submit samples to the Laboratory representative of each lot and color to be used on the project. A sample shall be obtained by cutting a 13 in. (330 mm) square section from a roll of sheeting. A list of prequalified sheeting manufacturers is listed in [[106.1 Approved and Pre-Qualified Lists|EPG 106.1 Approved and Pre-Qualified Lists]]. Reflective sheeting used for background, letters, numerals, arrows, symbols, borders and other features of the sign message shall be from a single manufacturer.
 
===1042.2.1.3 Chromate Conversion Treatment of Aluminum Panels===


The inspector shall submit samples to the Laboratory representative of the treated aluminum panels. A sample shall consist of a 3 in. x 6 in. (76 x 152 mm) aluminum coupon of the same alloy used in the panels. This coupon shall have been treated in the same manner and at the same time as the panels it represents.
The inspector shall submit samples to the Laboratory representative of the treated aluminum panels. A sample shall consist of a 3 in. x 6 in. (76 x 152 mm) aluminum coupon of the same alloy used in the panels. This coupon shall have been treated in the same manner and at the same time as the panels it represents.


==1042.2.2 Test Procedure==
==1042.1.2 Test Procedure==


Reflective sheeting shall be tested for brightness in accordance with [[106.7.8 TM-8, Photometric Test for Measuring the Brightness of Reflective Sheeting|MoDOT Test Method TM-8]].
Reflective sheeting shall be tested for brightness in accordance with [[106.3.2.8 TM-8, Photometric Test for Measuring the Brightness of Reflective Sheeting|MoDOT Test Method TM-8]].


Coupon samples of the chromate conversion treatment of aluminum shall be tested for weight of coating in accordance with ASTM B449.
Coupon samples of the chromate conversion treatment of aluminum shall be tested for weight of coating in accordance with ASTM B449.


Original test data and calculations are to be recorded in Laboratory workbooks. Test results shall be recorded through SiteManager.
Original test data and calculations are to be recorded in Laboratory workbooks. Test results shall be recorded through AWP.


==1042.2.3 Sample Record==
==1042.1.3 Sample Record==


The sample record shall be completed in SiteManager, as described in [http://wwwi/intranet/cm/materials/vol_3/AS3510.pdf Automation Sec 3510], and shall indicate acceptance, qualified acceptance or rejection. Appropriate remarks, as described in [[106.9 Reporting Test Results|EPG 106.9 Reporting Test Results]], are to be included in the remarks to clarify conditions of acceptance or rejection. Test results shall be reported on the appropriate templates under the Tests tab.
The sample record shall be completed in AASHTOWARE Project (AWP), as described in [[:Category:101 Standard Forms#Sample Record, General|AWP MA Sample Record, General]], and shall indicate acceptance, qualified acceptance or rejection. Appropriate remarks, as described in [[106.20 Reporting|EPG 106.20 Reporting]], are to be included in the remarks to clarify conditions of acceptance or rejection. Test results shall be reported on the appropriate templates under the Tests tab.


[[Category:1042 Highway Sign Material]]
[[Category:1042 Highway Sign Material]]

Latest revision as of 09:35, 14 September 2021

This article establishes procedures for inspecting, sampling, testing and reporting materials used in the construction of highway signs. Refer to Sec 1042 for MoDOT's specifications.

1042.1.1 Inspection and Sampling Procedure

The inspector shall observe the facilities at the sign fabrication plant and shall determine if the quality of workmanship and materials used in all phases of the fabrication of highway signs are in compliance with Sec 1042. When materials are sampled for Laboratory testing, the samples shall be taken by, or under the direct supervision of the inspector. The inspector shall use all possible care to ensure that the samples are uncontaminated and are representative of the materials to be used.

Each sample submitted to the Laboratory shall be accompanied by identification through AASHTOWARE Project (AWP) containing all pertinent information.

1042.1.1.1 Aluminum Flat Sheets, Extruded Shapes and All Nuts, Bolts, and Washers

The inspector shall obtain copies of the manufacturer's certifications covering all metal materials to be used. The inspector shall determine if these certifications are in full compliance with Sec 1042 and that the certifications cover a sufficient quantity of each material to complete all the signs for the project.

1042.1.1.2 Chromate Conversion Treatment of Aluminum Panels

The inspector shall submit samples to the Laboratory representative of the treated aluminum panels. A sample shall consist of a 3 in. x 6 in. (76 x 152 mm) aluminum coupon of the same alloy used in the panels. This coupon shall have been treated in the same manner and at the same time as the panels it represents.

1042.1.2 Test Procedure

Reflective sheeting shall be tested for brightness in accordance with MoDOT Test Method TM-8.

Coupon samples of the chromate conversion treatment of aluminum shall be tested for weight of coating in accordance with ASTM B449.

Original test data and calculations are to be recorded in Laboratory workbooks. Test results shall be recorded through AWP.

1042.1.3 Sample Record

The sample record shall be completed in AASHTOWARE Project (AWP), as described in AWP MA Sample Record, General, and shall indicate acceptance, qualified acceptance or rejection. Appropriate remarks, as described in EPG 106.20 Reporting, are to be included in the remarks to clarify conditions of acceptance or rejection. Test results shall be reported on the appropriate templates under the Tests tab.