New Hampshire Concrete Cutting
Manchester, NH
Call Now 603-622-4441


Concrete Cutting - Core Drilling - Wall Sawing - Flat Sawing

Concrete Cutting Home
Concrete Cutting Services
Convert Your Single Family
Employment Opportunities
Frequently Asked Questions
Installing a Precast Bulkhead
Basement Remodeling
Do It Your Self Concrete Cutting
What is Concrete Cutting?



Amherst Concrete Cutting
Concrete Cutting Antrim
Concrete Cutting Atkinson
Concrete Cutting Auburn
Concrete Cutting Bedford
Concrete Cutting Bennington
Concrete Cutting Brentwood
Concrete Cutting Brookline
Concrete Cutting Candia
Concrete Cutting Chester
Concrete Cutting Danville
Concrete Cutting Deerfield
Concrete Cutting Deering
Concrete Cutting Derry
Concrete Cutting East Kingston
Concrete Cutting Epping
Concrete Cutting Exeter
Concrete Cutting Francetown
Concrete Cutting Fremont
Concrete Cutting Goffstown
Concrete Cutting Greenfield
Concrete Cutting Greenland
Concrete Cutting Greenville
Concrete Cutting Hampstead
Concrete Cutting Hampton
Concrete Cutting Hampton Falls
Concrete Cutting Hancock
Concrete Cutting Hillsborough
Concrete Cutting Hollis
Concrete Cutting Hudson
Concrete Cutting Kensington
Concrete Cutting Kingston
Concrete Cutting Litchfield
Concrete Cutting Londonderry
Concrete Cutting Lyndeborough
Concrete Cutting Manchester
Concrete Cutting Mason
Concrete Cutting Merrimack
Concrete Cutting Milford
Concrete Cutting Mont Vernon
Concrete Cutting Nashua
Concrete Cutting New Boston
Concrete Cutting New Castle
Concrete Cutting Newfields
Concrete Cutting Newington
Concrete Cutting New Ipswich
Concrete Cutting Newmarket
Concrete Cutting Newton
North Hampton
Concrete Cutting Northwood
Concrete Cutting Nottingham
Concrete Cutting Pelham
Concrete Cutting Peterborough
Concrete Cutting Pinardville
Concrete Cutting Plaistow
Concrete Cutting Portsmouth
Concrete Cutting Raymond
Concrete Cutting Rye
Concrete Cutting Salem
Concrete Cutting Sandown
Concrete Cutting Seabrook
Concrete Cutting Sharon
South Hampton
Concrete Cutting Stratham
Concrete Cutting Temple
Concrete Cutting Weare
Concrete Cutting Wilton
Concrete Cutting Windham
Concrete Cutting Windsor







Concrete Cutting Sawing New Castle NH New Hampshire

Welcome to AffordableConcreteCutting.Net

“We Specialize in Cutting Doorways and Windows in Concrete Foundations”

Are You in New Castle New Hampshire? Do You Need Concrete Cutting?

We Are Your Local Concrete Cutter

Call 603-622-4441

We Service New Castle NH and all surrounding Cities & Towns

“No Travel Charges – Ever! Guaranteed!”

Concrete Cutting New Castle NH            

Concrete Cutter New Castle NH  

Concrete Coring New Castle NH

Core Drilling New Castle NH                    

Concrete Sawing New Castle NH

Concrete Sawing New Castle New Hampshire

Concrete Cutting New Castle New Hampshire

Concrete Cutter New Castle New Hampshire   

Concrete Coring New Hampshire           

Core Driller New Castle NH                      

Core Drilling New Castle New Hampshire                    

We have already determined that: Substituting the above value of Ic in this equation, we have, after considerable reduction: The above equation shows that we cannot select the percentage of steel at random, since it evidently depends on the selected stresses for the steel and concrete, and also on the ratio of their module. For example, consider a high-grade concrete (1:2:4) whose modulus of elasticity is considered to be 2,900,000, and which has a limiting compressive stress of 2,700 pounds (c'), which we may consider in conjunction with the limiting stress of 55,000 pounds in the steel. The values of c, s, and r are therefore 2,700, 55,000, and 10 respectively. Substituting these values in Equation 18, we compute p = .012. What percentage of steel would be required for ordinary stone concrete, with r = 15, c =2,000, and s = 55,000 ANS 0.95 percent. The moment which resists the action of the external forces is evidently measured by the product of the distance from the center of gravity of the steel to the cancroids of compression of the concrete, times the total compression of the concrete, or, otherwise, times the tension in the steel. The compression in the concrete and the tension in the steel are equal, and it is therefore only a matter of convenience to express this product in terms of the tension in the steel. Therefore, adopting the notation already mentioned, we may write the formula: But since the computations are frequently made in terms of the dimensions of the concrete and of the percentage of the reinforcing steel, it may be more convenient to write the equation: From Equation 12 we have the total compression in the concrete. Multiplying this by the distance from the steel to the cancroids of compression (d - x), we have another equation for the moment: This equation is perfectly general, except that it depends on the assumption as to the form of the stress-strain diagram as described in Article 260. On the assumption that q = 'for ultimate stresses in the concrete, the equation becomes: When the percentage of steel used agrees with that computed from Equation 18, then Equations 20 and 22 will give identically the same results; but when the percentage of steel is selected arbitrarily, as is frequently done, then the proposed section should be tested by both equations. When the percentage of steel is larger than that required by Equation 18, the concrete will be compressed more than is intended before the steel attains its normal tension. On the other hand, a lower percentage of steel will require a higher unit-tension in the steel before the concrete attains its normal compression. When the discrepancy between the percentage of steel assumed and the true economical value is very great, the stress in the steel (or the concrete) may become dangerously high when the stress in the other element (on which the computation may have been made) is only normal.

268. Example 1. What is the ultimate resisting moment of a concrete beam made of 1:3:5 concrete, which is 7 inches wide, 10 inches deep to the reinforcement, and which uses 1.2 per cent of reinforcement? The concrete is supposed to have a ratio for the module of elasticity (r) of 15. The ultimate strength of the concrete is assumed as 2.000.

Answer. From Table XIII, p = .012, and r = 15, Ic = .490; x = .357 lcd = .175 d; d - x = .825 d. From Equation 22 we have: M0=>< 2,000 x .490 X 7 X10 x 8.25=330,137 inch-pounds. The total compression in the concrete is the continued product of all the factors except the last, and equals 40,017. But this equals the tension in the steel, whose area = pbd = .012 x 7 X 10 .84 square inch. Therefore the unit-stress in the steel would equal 40)017 ± .84 = 47,640 pounds per square inch. This is considerably less than the usual ultimate of 55,000, and shows that the percentage of steel is considerably in excess of the normal value.

Are You in New Castle New Hampshire? Do You Need Concrete Cutting?

We Are Your Local Concrete Cutter

Call 603-622-4441

We Service New Castle NH and all surrounding Cities & Towns