RCC design & detailing
Rebar lap length: the figures that are useful on site
Lap length is not a number to memorise. What changes it, and one worked example you can follow.
Engr. Md. Nuruzzaman3 minutes read
RCC design & detailing
RCC design & detailing
Punching shear in a footing: where most mistakes happen
Two-way shear is the most common governing condition in footing design. Where the critical perimeter sits, and what people get wrong about it.
Engr. Md. Nuruzzaman3 minutes read
Structural engineering
Sizing a one-way slab: the deflection check that decides it
Slab thickness is set by deflection control first. The simple check, and the span/depth ratios it rests on.
Engr. Md. Nuruzzaman3 minutes read
RCC design & detailing
Development length and lap splices: where the numbers come from
Why a bar has to run a certain length into concrete, how that length is arrived at, and what changes it.
Engr. Md. Nuruzzaman3 minutes read
Structural engineering
Slab thickness is set by deflection, not by moment
In most two-way slabs the span/depth ratio decides the thickness, and the strength check follows rather than leads.
Engr. Md. Nuruzzaman2 minutes read
RCC design & detailing
Checking an isolated footing size, step by step
A worked example with real numbers: getting a first footing size from the allowable bearing pressure, and where it usually goes wrong.
Engr. Md. Nuruzzaman3 minutes read
RCC design & detailing
Bar bending schedule: working out the steel quantity
Building a BBS from a drawing step by step, including the cuts, bends and laps that are easy to miss.
Engr. Md. Nuruzzaman3 minutes read