This construction video focuses on developing Baby Basement. The Glatthaar Baby Basement is very cost effective and it offers extra space under the ground bearing slab. The basement is utilized as a storing or utility room as well as wine cellar etc. It is situated wherever determined in the architectural drawing. Baby basement is found in concrete staircase, lightwells, external entrance, etc.
The process includes the following :-
Shuttering of foundation slab
Positioning of membrane & spacers
Positioning of reinforcement
Pouring of foundation slab
Levelling & trowelling
Completed foundation slab
Set up twin wall panels
Set up floor panels
Filling twin wall cavity
Completed basement installation
Arrangement of ground floor slab
Footings and shuttering of ground floor slab
Positioning foul drainage pipes
Pouring frost protection
Positioning membrane & spacers
Pouring ground floor and basement slab
Finished baby basement through ground floor slab
Specifications of the Glatthaar Baby Basement:
The dimensions of the foundation slab range from 4,80 m or 9,60 m (length) x 4,80 m (width). A polythene Membrane is set up below the ground bearing slab. The concrete surface is left lightly tamped or completed through hand trowels. Thickness of the foundation slab, nominal 250 mm insitu concrete C25/30 (as supposed perfect).
External basement walls
The external walls are developed with storey height, pre-cast concrete composite panels include an inner and outer leaf perpetually joined with reinforcement. Panels are set up butt-jointed on the foundation slab that is built up earlier. Each panel thickness nominal 240 mm is mass-produced from a C25/30 concrete, fair faced is completed on the face of both leaves with joints left uncovered. The internal structural height belongs to 2,40 m. Opening for service pipes and sealing flanges (max. 3 piece) are contained.
Ground floor / Basement slab
The floor slab, thickness nominal 180-200 mm, contains both pre-cast and insitu concrete C20/25. Supplimentary reinforcement is settled on site. The cavity amid the leaves of the basement wall is stuffed with insitu concrete and poured with the ground floor basement slab for developing a monolithic, box-like structure.
Waterproofing and insulation
Glatthaar is completely water-resistant to the structure. The waterproof structure is attained by using BS 8102 Type A (Tanking) or Type B (structural integral protection) as supposed perfect. The foundation slab and the wall panels contain waterproof concrete. Max. 4 sealing flanges are contained. The complete external walls are covered with a 40 mm insulation board and a backfill protection.