Serviceability Consideration for Steel Buildings

Standard steel buildings Structural Element Deformation Max Limit Loading Main Frame Vertical Span/150 DL+LL Or DL+SL Jack Beams Span/240 DL+LL Or DL+SL Roof Purlins Span/150 DL+LL Or DL+SL Mezzanine Beam/Joist Span/240 DL+LL Span/360 LL Main Frame Horizontal E.Height/45 DL+WL End Wall Columns Height/90 WL Wall Girts Span/90 WL    Steel buildings with Block walls Structural …

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Materials

Few important built up sections listed below for reference: Plates: Cold formed sections: Hot rolled sections:  Sheetings: Skylight panels: Trims: Round bars: Cable bracing: Anchor bolts: Miscellaneous: > Bolts: Nuts: Washers: Rivets:

Machine foundation: Its introduction and importance

The familiarity with the Foundations subjected to static loads has been very common. But, in some cases the foundations are also subjected to the dynamic loads. The resulting dynamic forms of loads may be from numerous causes like vibratory motion of machines, impacts from hammering, vehicle access/movement, earthquakes, waves, winds, cyclones, nuclear blasts, mining explosions, …

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Modification of irregular configuration Building to regular configuration

Building with irregular (improper) configuration can be modified into regular (proper) configuration. The easy step for the task is as follows;STEPS: Arrange the grid of building to simple geometric shapes i.e. square, rectangle. Change the position of the columns from random placement to grid wise arrangement (always try to work on grids). Exclude/eliminate/avoid too short …

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Design Engineer’s Responsibilities

Reports to his Design Supervisor. Studies and validates contract requirements, given in the Contract Information Form and raises queries and requests for clarifications as necessary. Designs structures assigned to him using design codes, specifications, procedures and standards with engineering rationale. Designs all building components satisfying the stability, serviceability and stress requirements simultaneously under design loads …

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Semi gravity walls

L WallCan be used with counterforts.   Invert-L WallCan be used with buttresses.   T-Wall, Shallow FoundationT-walls on spread footing. Use counterforts and shear key if needed.   T-Wall or L-Wall, Deep FoundationT-walls or L-walls on deep foundations. Use either drilled caissons or piles.   P/T T-Wall, Shallow FoundationT-walls with precast, post-tensioned stem and cast-in-place base …

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Floating slab under chiller

The detail below shows a floating slab under a chiller. Floating slab is a reinforced concrete slab its main function to eliminate the vibration induced by chillers. This reinforced concrete slab is resting on a floating system provided by a supplier. The detail above is for example and guidance only.

Tubular lights foundation

Tubular lights are tubes with an extreme high quality reflection to transfer the sun light through a curved glass to the inside of a building to save electricity consumption and securing a day light for corridors, rooms, halls, etc. From inside the building, tubular lights looks just as simple as a normal light. This is …

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Expansion joints

Expansion joints must accommodate movements produced by concrete shrinkage and creep, post-tensioning shortening, thermal variations, dead and live loads, wind and seismic loads, and structure settlements. Concrete shrinkage, post-tensioning shortening, and thermal variations are generally taken into account explicitly in design calculations. Because of uncertainties in predicting, and the increased costs associated with accommodating large …

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