Heat insulating arrangement

A kiln car comprising:

• a chassis having a generally rectangular upper surface with a peripheral margin, the peripheral margin having corner regions joined by side regions,
• an insulating lining on the upper surface of the chassis, the lining comprising
• a plurality of freestanding straight rigid hollow members of generally inverted U-shaped cross-section with side walls and an upper wall and a plurality of freestanding angular rigid hollow members each comprising first and second segments of generally inverted U-shaped cross-section with side walls and an upper wall, said rigid hollow members being of modular configuration and arranged engaging together around and on the peripheral margin only of the upper surface of the chassis, with the angular members at the corner regions of the peripheral margin and the straight members extending between adjacent corner members, whereby the rigid hollow members define an enclosed area,
• a cover extending over the enclosed area, and
• insulating material within the enclosed area and within the hollow members, and
• a support structure for supporting articles being fired, the support structure extending upward from the upper surface of the chassis through the insulating material to support articles above the cover.