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Design and Detailing of Multi Storied Buildings

Veritested and approved by Microsoft

CABFADD, Build Infotech Solution's new Computer Aided Building Frame Analysis Design and Detailing Software is designed to automate designing and detailing of all types of multi storied buildings from commercial complexes to sky scrapers. This software produces a number of practically feasible customized designs to suit the Indian Standards of construction which is not offered by other software already available in the market. This makes CABFADD not just the most productive and accurate designing, analysing and detailing software, but also the easiest.

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Key Features
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For further information contact us at info@buildnova.com

CABFADD - Overview

CABFADD is a versatile and easy-to-use tool for Structural/Architectural consultants for the analysis and design of multi-storey framed buildings. This software package is customized to Indian Standards thus reducing the amount of data to be inserted as input. The design of a 10 storey building can be defined/analyzed and designed in less than � hour. Defining geometry, loads, support modeling, structure properties, analysis, design and estimation is completely simplified.

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	Simple to use interactive forms for modeling the building with editing facilities.
	Plane/3D representation of the frame of building with features for rotation, pan, zoom from x, y and z directions.
	Visual representation of slabs, walls, beams, with numbers and features to edit them like splitting, deleting, inserting, merging etc.,
	Graphical representation of bending moments, shear forces, axial forces and deflections for all the members in all the planes.

Technical Details

	Inbuilt Structure specific load calculations for dead loads, imposed loads, Earth quake, wind forces as per relevant IS Codes.
	The member loads and joint loads coming from slabs, walls, wind, Earthquake etc., are calculated as per IS codal provisions and used for Analysis.
	The loads on beams are automatically applied as UDL/Partial UDL, triangular, Partially triangular, Trapezoidal/Partially trapezoidal and combination of any of the above.
	Recycling of dead loads arrived through designs.

Modeling

	Mathematical Model is automatically generated and the user need not worry about defining joint coordinates or member connectivities.
	Secondary beams/cross beams are modeled automatically duly releasing end moments thereby releasing incompatible torsion effect in the main beams.
	Infill modeling for buildings in seismic zones, particularly with stilt floors is incorporated in the new version. Without this modelling the results will not be correct even if the building is designed for earthquake forces.
	Foundation modeling based on soil type and foundation system.
	User friendly editing of model to suit all practical requirements such as balconies, floating columns, Viriendal frames, grid floors etc.

Analysis

	3D-Analysys using stiffness method.
	Load case combinations as per IS-456 and reporting of design forces for all elements & supports.
	Deflection for all load cases.
	Analysis for all types of Earthquake and wind force effects.
	Analysis Reports, Bending moment, Shear force and axial force diagrams in both principal planes.

Design

	Slabs:
	Identification of Panel type for moment coefficients as per IS: 456
	Sunken slab Modeling.
	Deflection checks and fixing of slab thickness.
	Various alternative choices for selection of diameter/spacing by the designer.
	Automatic span moment interpolation and design for shear, bending and torsion as per IS: 456.
	Selection of Reinforcement bars considering spacing criteria as per IS: 456.
	Facility for grouping of beams with similar design criteria.
	Columns:
	Calculation of effective length in both directions based on unbraced/braced/double curve type and stiffness at both the ends.
	Calculation of additional bars for long columns.
	Design of column for axial load and biaxial bending and checking for the interaction equation value for bending and axial forces.
	Footings:
	Fixing of the footing dimensions based on bending and shear criteria.
	Design of Isolated/spread/stepped footings with/without pedestal and checking for interference and design of combined footings.

Estimation

	Estimation of quantities, concrete, steel, shuttering floor wise and representation on unit area basis.
	Estimation of total quantities element wise beam/slab/wall/Footing etc.

Reports

	Formatted reports, that can be printed.
	Reports for Bending moment, Shear, and axial forces are generated for elements.
	Design reports.
	Gist of the design.		Top

CABFADD - Features

User - friendly Interface	Simple and user- friendly interface helps the engineer to specify the required quantities for the designing process.
Fast	Using CABFADD, a commercial complex can be designed in less than half an hour.
Design Options	Innumerable designs are generated for change in a single option.
Accurate Analysis	The building frame is accurately analysed taking various forces and loads into consideration.
Detailed Reports	Generates filtered reports to suit various requirements.
Scalable	CABFADD can be used to design any number of stories in a building.
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FAQs for CABFADD

1.	The Bending Moment Diagram for a specific beam should represent both hogging (-) and sagging (+), i.e., a triangle representing sagging for half span and a triangle representing hogging for other half of span �. Why does CABFADD show the bending moment diagram for that beam as hogging throughout the span i.e., a trapezoidal shape.
Ans:	As anti clockwise moments are taken positive in CABFADD, the Bending Moment Diagram shown by our product for that beam is appropriate. It represents the hogging moment. So the sign convention varies accordingly.

2.	The Minimum percentage of steel in columns is 0.8 percent of gross c/s area. CABFADD shows that the Minimum percentage of steel in columns is less than 0.8 percent of gross c/s area.
Ans:	IS 475 : 2000 , Clause:26.5.3.1(b) states that, in any column that has a larger cross sectional area than that required to support the load, the minimum percentage of steel shall be based upon the area of concrete required to resist the direct stress and not upon the actual area. Hence it is possible to have percentage of steel even lesser than 0.8 percent of gross c/s area.