New structural frameworks

An inflatable concrete dome

It is very expensive to use currently available construction methods to build free-form concrete shells. As a result, many designs are not implemented due to shortage of funds, but replaced with conventional solid structures. In principle, concrete shells come with the advantage of being very thin whilst also providing exceedingly wide spans. Past projects include shells with a span-to-thickness ratio of 1:1,000, whereas conventional beam or precast floors only achieve a ratio of up to 1:50 for very slender elements.

The new “Pneumatic Forming of Hardened Concrete” construction method developed...

Related articles:

Issue 2014-01

Fragmented slab lifting apparatus and method

(10) US 8,591,143 BI (22) May 10, 2013 (45) Nov. 26, 2013 (71) Ronald A. Knapp, Bonita Springs, FL (US) (57) A slab jack assembly for raising a fragmented slab from between sections of a concrete slab...

more
Issue 2019-02 Pneumatic formwork construction

Manta event roofing

Concrete as a construction material has an especially high resistance to compression. Concrete shells with a geometry optimized in a way such that primarily compressive forces arise are accordingly...

more
Issue 2019-09

Precast floor slab and method for forming a flooring deck and building formed of precast floor slabs

(11) EP 3 517 698 Al (22) 29.01.2019 (43) 31.07.2019 Bulletin 2019/31 (57) The invention relates to a floor slab, which is intended to form a flooring deck. The floor slab (26) in­cludes cast...

more
Issue 2020-06

Method and semi-finished product for construction of a concrete double-wall element

(10) WO 2020/074617 Al (22) 09.10.2019 (43) 16.04.2020 (57) The invention relates to a method for producing a concrete double-wall element comprising two spaced-apart concrete shells (2a, 2b) that are...

more
Issue 2019-05

Method forming a waffle slab with concrete surfaces that do not require polishing

(10) US 2019/0077044 Al (22) 28.11.2017 (43) 14.03.2019 (57) The present disclosure relates to a method of forming a waffle slab with concrete surfaces that do not require pol­ishing, the method...

more