Search results
Results from the WOW.Com Content Network
In 1972, form liner manufacturers created a fluted form liner with graphic inlays of shrimp boats, a famous crawfish wrapped around an oil bearing, tug boats and race boats. This sound/retaining wall, located in Morgan City, LA , was to be the first use ever of graphic inlays in form liner.
"Form blowouts" also occur when under-designed formwork bends or breaks during the concrete pour (especially if filled with a high-pressure concrete pump). Consequences can vary from minor leaks, easily patched during the pour, to catastrophic form failure, even death. Concrete exerts less pressure against the forms as it hardens.
The first expanded polystyrene ICF Wall forms were developed in the late 1960s with the expiration of the original patent and the advent of modern foam plastics by BASF. [citation needed] Canadian contractor Werner Gregori filed the first patent for a foam concrete form in 1966 with a block "measuring 16 inches high by 48 inches long with a tongue-and-groove interlock, metal ties, and a waffle ...
A strap footing is a component of a building's foundation. It is a type of combined footing, [1] consisting of two or more column footings connected by a concrete beam. This type of beam is called a strap beam. It is used to help distribute the weight of either heavily or eccentrically loaded column footings to adjacent footings. [2]
A general bearing failure occurs when the load on the footing causes large movement of the soil on a shear failure surface which extends away from the footing and up to the soil surface. Calculation of the capacity of the footing in general bearing is based on the size of the footing and the soil properties.
Royal Navy World War II motor torpedo boat (MTB) planing at speed on calm water showing its hard-chine hull. Note how most of the bow of the boat is out of the water.. The scow in particular, in the form of the scow schooner, was the first significant example of a hard-chine sailing vessel.
Do 24 V3, the first of the Dutch X boats, as they would be called in Dutch service, took off from Lake Constance on 3 July 1937, with the second Dutch boat, Do 24 V4 following soon after. [2] As the Dutch required that their flying boats use the same engines as the Martin 139 bombers in use in the Dutch East Indies, they were fitted with 661 kW ...
Schematic cross section of a pressurized caisson. In geotechnical engineering, a caisson (/ ˈ k eɪ s ən,-s ɒ n /; borrowed from French caisson 'box', from Italian cassone 'large box', an augmentative of cassa) is a watertight retaining structure [1] used, for example, to work on the foundations of a bridge pier, for the construction of a concrete dam, [2] or for the repair of ships.