backform
nounEtymology From back- + form.
1
Business, Construction, Manufacturing Empty gloss, No gloss (construction)
- Then the sheeting is used as a backform for the protection wall, which is built in advance of the subway wall.1931 December 24, “New York Subway Construction—VI: Steel Erection and Concreting Methods”, in F. E. Schmitt, editor, Engineering News-Record […], volume 107, number 26, New York, N.Y.: McGraw-Hill Publishing Company, →ISSN, →OCLC, page 1002, column 2:
- In the case of rapidly placed, steeply sloping slabs, backforms are required.1969, M[ary] K[rumboltz] Hurd, “Vertical Loads”, in Formwork for Concrete (Special Publication Number 4), 2nd edition, Detroit, Mich.: American Concrete Institute, →OCLC, chapter 5 (Loads and Pressures), page 75:
1 more example
- When footings can be placed in the dry without the use of cribs or cofferdams, backforms may be omitted with the approval of the Engineer and the entire excavation filled with concrete to the required elevation of the top of the footing.1973, American Association of State Highway and Transportation Officials, “Excavation and Fill”, in Standard Specifications for Highway Bridges, 11th edition, Washington, D.C.: [T]he Association, →OCLC, division II (Construction), page 247: