 ### A Practical Equation for Elastic Modulus of Concrete

Equation (7), introduced as general equations for the elastic modulus of concrete, can now be rearranged and proposed in a conventional way such as Eq. (1) through (3). In these equations, the standard moduli of elasticity can be simply obtained by substituting standard values of . ### Appropriate footing size based on column load

Hi Debra, thanks for visiting The formula for calculating pressure is applied force (F) divide by area (A) or P=F/A That is where the unit of pressure lbs/sf or pounds per square foot – sometimes express in square inch as psi (pounds per square inch) or ksi (kilo pounds per square inch). ### Dry Bulk Density of Soil Calculator

It is generally expressed in megagrams per cubic metre (Mg/m3) but the numerically expressed in g/cm3. Soils with a bulk density higher than g/cm3 have a tendency to restrict root growth. In this calculator, you can calculate the soil dry bulk density based on the mass and volume of the soil. ### Concrete Mix Design As Per Indian Standard Code

Calculate the cement content form the watercement ratio and the final water content as arrived after adjustment. Check the cement against the minimum cement content from the requirements of the durability, and greater of the two values is adopted. ### ACI 31811: Reinforced concrete beam design parameters ...

Cover of concrete over/under the reinforcement must be provided to protect the steel from corrosion. For indoor exposure, inch is typical for beams and columns, inch is typical for slabs, and for concrete cast against soil, 3 inch minimum is required. Apr 08, 2014· The following points should be remembered before proportioning a concrete mix a per IS. This method of concrete mix proportioning is applicable only for ordinary and standard concrete grades. The air content in concrete is considered as nil. ### How to Refresh Formulas in Excel Fix Formulas That Aren ...

How to Refresh Formulas in Excel: Fix Formulas That Aren't Updating! Written by cofounder Kasper Langmann, Microsoft Office Specialist.. In this tutorial, we are going to look at how to recalculate and refresh formulas in Microsoft Excel.. We will do this using the Calculate Now and Calculate Sheet features in the application. ### Rebar Calculator

The Rebar Calculator contains equations and data used in working with reinforcement bars (rebar) in concrete slabs. The formulas calculate materials needed for rectangular, circular and irregular shaped slabs. () . Reinforcement Bar (rebar) Functions. Length of . ### How to calculate the Water cement ratio of reqiured ...

Answer / ghizal. as the density of water is 1. if we multiply the water. cement ratio with the cement being used, we will get the. amount of water. For example if water cement ratio is and cement being used is 400 kg per cum, then the water. required will be 400=180 litres per cum of concrete. ### 2aConcrete Mix Design VTC

Portland cement content = (100 p) [W / (C F)] (100 p) W where W = the free water content (kg/m3) C = the cement content (kg/m3) F = pfa content (of the mix) (kg/m3) p = proportion of pfa specified as percentage of the combined weight of cement and pfa the ratio of W/(C+) is derived from Table 10 and Figure 4 C7 pfa content = 100 p p C where C = the cement content (kg/m3) ### Calculating the Design Moment Strength of a Reinforced ...

Jan 15, 2017· In this post, I will discuss the first example in our course that covers the analysis and design of reinforced concrete oneway slabs. The goal of this reinforced concrete design example is to find the design moment strength of a reinforced concrete oneway slab per ACI Code 31811. ### Portland Cement 1 cubic meter volume to kilograms converter

Calculate how many kilograms ( kg kilo ) of Portland cement are in 1 cubic meter ( 1 m3 ). Specific unit weight of Portland cement amount properties converter for conversion factor exchange from 1 cubic meter m3 equals = 1, kilograms kg kilo exactly for the masonry material type. ### Civil At Work: STANDARD CEMENT CONSUMPTION

Nov 16, 2014· Providing and laying skirting and dado of polished Shahabad stone 25 to 30 mm. with 1:4 ### Development Length Calculation as per Indian Code Blogger

Sep 21, 2016· Development Length Calculation as per Indian Code Development length is the extra length of bar provided beyond the required section in order to ensure the following; To develop a safe bond between the bar surface the concrete so that no failure due to slippage of bar occurs during the ultimate load conditions. ### Eurocode 2: Design of concrete structures EN199211

The coeeficient s depends on type of cement: s = 0,20 for rapid hardening cement (Class R), s = 0,25 for normal hardening (Class N) and s = 0,38 for Class S (slow hardening) cement. ### Water cement ratio ACI (concrete) Code Issues EngTips

Dec 21, 2009· exposure), even though it generally contains more than 1500 ppm SO4. Portland cement with higher C3A content improves binding of chlorides present in seawater and the Code permits other types of portland cement with C3A up to 10 percent if the maximum w/cm is reduced to These are the occurrences found in a pdf search of the code.