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 Pelham NH New Hampshire

Welcome to AffordableConcreteCutting.Net

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

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

We Are Your Local Concrete Cutter

Call 603-622-4441

We Service Pelham NH and all surrounding Cities & Towns

“No Travel Charges – Ever! Guaranteed!”

Concrete Cutting Pelham NH      

Concrete Cutter Pelham NH        

Concrete Coring Pelham NH       

Core Drilling Pelham NH              

Concrete Sawing Pelham NH

Concrete Sawing Pelham New Hampshire

Concrete Cutting Pelham New Hampshire       

Concrete Cutter Pelham New Hampshire         

Concrete Coring New Hampshire           

Core Driller Pelham NH                

Core Drilling Pelham New Hampshire               

The nine 1-inch bars give a much better distribution of the metal inside of the concrete. The superficial area of the nine 1-inch bars is 18 square inches per linear inch of the concrete beam, while the area of the four 3-inch bars is only 12 square inches per inch of length. But an even greater advantage is furnished by the fact that we have nine bars instead of four, which may be bent upward (and bent more easily than the 3-inch bars) as fast as they can be spared from the bottom of the concrete beam. In this way the shear near the end of the concrete beam may be much more effectually and easily provided for. Since the shear is greatest at the ends of the concrete beam, more bars should be reserved for turning up near the ends. For example, in the above case of the nine bars, one or two bars might be turned up at about the quarter-points of the concrete beam. One or two more might be turned up at a distance equal to, or a little less than, the depth of the concrete beam from the quarter-points toward the abutments. Others would be turned up at intermediate points; at the abutments there should be at least two, or perhaps three, diagonal bars, to take up the maximum shear near the abutments. This is illustrated, although without definite calculations, in Fig. 101. This will be illustrated by a numerical example.

A concrete beam having a span of 18 feet supports one side of a 6-inch concrete slab 8 feet wide which carries a live load of 200 pounds per square foot. In addition, a special piece of machinery, weighing 2,400 pounds, is located on the concrete slab so near the middle of the concrete beam that we shall consider it to be a concentrated load at the center of the concrete beam. The concrete floor area carried by the concrete beam is 18 feet by 4 feet = 72 square feet. Adding 3 inches to the 6 inches thickness of the concrete slab as an allowance for the weight of the concrete beam, we have 9 X 12 = 108 pounds per square foot for the dead weight of the concrete floor. With a factor of 2 for dead load, this equals 216. Using a factor of 4 on the live load (200), we have 800 pounds per square foot. 'Then the ultimate load on the concrete beam, due to these sources, is (216 + 800) the reliability of the whole calculation. Therefore the rules which have been suggested for a prevention of this form of failure are wholly empirical. Mr. E. L. Ransome uses a rule for spacing vertical stirrups, made of wires or i-inch rods, as follows: The first stirrup is placed at a distance from the end of the concrete beam' equal to one-fourth the depth of the concrete beam; the second is at a distance of one-half the depth beyond the first stirrup; the third, three-fourths of the depth beyond the second; and the fourth, a distance equal to the depth of the concrete beam beyond the third (see Fig. 100). This empirical rule agrees with the theory, in the respect that the stirrups are closer at the ends of the concrete beam, where the shear is greatest. The four stirrups extend for a distance from the end equal to 212 times the depth of the concrete beam. Usually this is a sufficient distance; but some "systems" use stirrups throughout the length of the concrete beam.

On very short concrete beams, tIe shear changes so rapidly that at 212 times the depth from the end of the concrete beam the shear is not generally so great as to produce dangerous stresses. With a very long concrete beam, the change in the shear is correspondingly more gradual; and it is possible that stir- nips or some other device must be used for a greater actual distance from the end, although for a less proportional distance. When the diagonal reinforcement is accomplished by bending tip the bars at an angle of about 45°, the bending should be done so that there is at all sections a sufficient area of steel in the lower part of the concrete beam to withstand the transverse moment at that section.

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

We Are Your Local Concrete Cutter

Call 603-622-4441

We Service Pelham NH and all surrounding Cities & Towns