## Monday, September 28, 2015

### How to design tank foundation with AFES foundation design software

This construction video provides brief guidelines for the design for tank foundations with AFES foundation design software. This video is very useful civil engineers.

AFES is a useful software designed for raft foundation. It consists of structural calculation report, construction drawing having bar schedule, material quantities and 3D CAD modeling.

It is used to create the design of equipment supports, steel structure and piperack foundations.

Storage Tank Foundation Design Guide

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Rajib Dey
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## Saturday, September 26, 2015

### How to estimate the quantity of reinforcement

In order to figure out the accurate cost of the structure, the proper idea on the quantities of the materials together with the reinforcement should be considered. One can estimate the proper quantities concerning the concrete and brickwork out of the layout drawings. In case the working drawings and schedules for the reinforcement are unavailable, the estimation should be made on the basis of the predictable quantities. The quantities are generally spcified consistent with the conditions of the Standard method of measurement concerning the building works.

To deal with the reinforcement quantities the followings are required :

1. Bar reinforcement is explained separately with steel type (e.g. Gentle or high-yield steel), diameter and weight and seqregated as per the following : (a) Element of structure, e.g. foundations, slabs, walls, columns, etc., and (b) Bar ‘shape’, e.g. straight, bent or hooked; curved; links, stirrups and spacers.

2. Fabric (mesh) reinforcement is defined separately with steel type, fabric type and area, segregated as per (a) and 1(b) mentioned above.

In order to estimate the reinforcement quantities, various techniques are used and amid them the followings three techniques are most recognized :-

Method-1 for Reinforcement Estimation: This method is easy to use and it is created on the basis of the type of structure and the volume of the reinforced concrete elements. As for instance, common values are :-

• Warehouses and identically loaded and proportioned structures: 1 tonne of reinforcement per 105m3
• Offices, shops, hotels: 1 tonne per 13.5m3
• Residential, schools: 1 tonne per 15.05m3

Although this method is used to examine the total estimated quantity, but it may not be completely correct. Besides, lots of expertize are required to break the tonnage down to Standard Method of Measurement requirements.

Method-2 for Reinforcement Estimation: The other useful technique is to apply factors for transforming the steel areas captured from the preliminary design calculations to weights, e.g. kg/M2 or kg/m as suitable to the element.

If the weights are divided into practical, This technique offers a logically perfect judgement if the weights are segregated into functional bar diameters and shapes. Though the factors strongly accept a degree of standardization both of structural form and detailing.

This method is treated as relatively adaptable and accurate in practice, since it is formed with reinforcement requirements established by the preliminary design calculations.

Method-3 for Reinforcement Estimation: Under this technique sketches are created toward the ‘typical’ cases of elements and then weighted.

This method offers the following benefits :

• The sketches denotes the existing structure
• The sketches consist of the intended form of detailing and distribution of primary and secondary reinforcement
• An allocation of supplimentary steel for variations and holes are created through inspection.

This method is also suitable for calculating or analyzing the factors narrrated in method 2 as it consider the individual detailing methods.

In order to make the reinforcement estimate, the importance should be given on the following items :

• Laps and starter bars: A rational allowance concerning normal laps in both primary and distribution bars and for starter bars should be allowed. It should also be verified wheather special lapping arrangements can be applied.
• Architectural features: The drawings should be analyzed properly and plentiful allowance made for the reinforcement is necessary for such ‘non-structural’ features.
• Contingency: A contingency ranging from 10% and 15% is to be included considering some modifications and probable errors.

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Rajib Dey
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## Thursday, September 24, 2015

### Spreadsheet based calculation to model water flow in a double pipe heat exchanger

Douglas Price presents an video useful for the chemical engineering students. By undergoing this youtube video, one can learn how to make calculation through an excel based spreadsheet to model hot and cold water flow in double pipe heat exchanger.

The experimental and theoretical study of heat exchange is very vital for chemical and mechanical engineering students.

Temperature is characterized as the amount of energy that a substance contains. Heat exchangers can be applied for transmitting that energy from one substance to another. In process units, the temperature must be controlled for inward and outward streams. These streams range from either gases or liquids. Heat exchangers increase or decrease the temperature of these streams by transmitting heat to or from the stream.

The double-pipe heat exchanger refers to the most easiest types of heat exchangers. It is known as double-pipe exchanger as one fluid runs inside a pipe and the other fluid runs connecting that pipe and another pipe that encircles the first. Flow in a double-pipe heat exchanger is co-current or counter-current. There exist two flow configurations: co-current means when the flow of the two streams run in the identical direction, counter current means when the flow of the streams run in reverse directions.

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Rajib Dey
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## Wednesday, September 23, 2015

### Different types of construction equipments for reinforcement steel bar bending

1779, 1780, 1782 - Rebar bending machines for building construction sites: FEAL PROGETT has developed the automatic rebar bending machines. These construction machines are specifically designed toward small building construction sites. The machines contain wheels for short displacement on site.

1783, 1784, 1785 - Rebar bending machines having 2 extended saddle for double bend: Besides containing wheels for short displacement on the construction site, these machine also contain 2 extended sliding saddleshaving holes for double bend.

1785B - Rebar bending machines having 4 sliding saddles for special bends: The machines automate the process toward rebar bending for large building construction site. The machines consist of wheels for short displacement on the construction site. Besides, the machines also contain 4 extended sliding saddles having holes for special bends.

1786, 1786B - Rebar bending machines which include computer 20 angles selector: These types of machines are intended for large building construction site and there are 4 extensive sliding saddles which contain holes to be utilized for special bends. These machines are provided with computer 20 angles selector.

1787 - Bar bending machines for high performances: These types of Rebar bending machines are used for large building construction sites for greater production. These machines are capable of bending reinforcement steel bar up to 60mm diameter.

All the above machines are developed by FEAL PROGETTI and useful for dealing with reinofrcement steel bar in construction jobsites. All the machines are furnished with wheels for short displacements.

Automatic SEAM rebar bending machines are supported with electric motor, gearbox having gears and pinions in hardened steel performing in a oil bath and having driving shaft toward the circulation of the working plate to handle all diameter of reinforcement steel bar suitable for various types of bends and/or stirrups.

There are control board having superior quality components, IP54 water proof, micro-switches, emergency push buttons as well as magneto-thermal switch & fuses for protecting overloaded motor ,within Rebar bending machines.

Different types of construction equipments for reinforcement steel bar bending download

Rebar bending machine 1779 contains three-phase or single-phase electric motor.

Rebar benders 1783, 1784 and 1785 are available with 2 extended sliding saddles containing holes for double bend.

Rebar benders 1785B, 1786, 1786B and 1787 comprise 4 extended sliding saddles for special bends.

Rebar bender 1786B is furnished with computer 20 angles selector.

All SEAM REBAR MACHINES contain the following features : Computer 20 angles selector, Measuring-bending stirrups device, Big radius equipment, Spiral and hoops equipment, Steel benches with rollers and All rebar bending machines are provided with set of bushes, pivots and remote foot pedal.

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Rajib Dey
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## Tuesday, September 22, 2015

### Brief overview of Seismic designs for masonry building

The National Building Code of Canada 2005 (NBCC 2005) and the CSA S304.1-04 masonry design standard are two useful construction documents which facilitate the structural engineers to create design for masonry buildings toward seismic load effects.

This article offers a explanation on the elementary theoretical background and theory for the CSA S304.1-04 seismic design provisions. Modifications in the seismic design provisions are described in Part 4 of the NBCC 2005 and CSA S304.1-04, as well as how these affect the masonry design and construction.

This document provides a detailed up-to-date guide on seismic design and building of masonry structural elements for low to mid-rise structures, like warehouses, industrial buildings, schools, commercial buildings, and residential/hotel structures. This construction article mainly focuses on how to apply concrete block units for designing and construction of masonry structures.

Learn the use of seismic design provisions and cross-referencing of code clauses for designers. The addendums consist of some helpful documentations like design processes and research background toward some of the design provisions. The applicable code clauses are provided through framed boxes wherever required.

Chapter 1 offers the assessment of the general seismic design provisions described in Part 4 of NBCC 2005, together with seismic hazard levels, and the relevent static force processes. One can learn the primary design parameters which range from irregularities, torsion, height limitations, and the ductility and overstrength features for masonry structures. Besides, there is an explanation to the dynamic analysis of structures to simplify the suitable code provisions. As lots of updates are made to the seismic provisions in NBCC 2005, relevancies with the earlier 1995 edition of the building code are also provided in Appendix A.

Chapter 2 contains an explanation of seismic design needs for reinforced masonry walls. Applicable CSA S304.1-04 design needs are provided together with concerned commentary having brief interpretation concerning code provisions. Here topics covered reinforced masonry shear walls based on in-plane and out-of-plane seismic loads, as well as a eloborate explanation of the CSA S304.1 seismic design needs. Some exclusive topics like masonry infill walls, stack pattern walls, masonry veneers, and construction-related issues are also covered. Amendments in CSA S304.1-04 seismic design needs from the earlier (1994) edition are explained and discussed,together with their design suggestions. Appendix B includes topics associated with the Chapter 2 content which range from findings of research studies and foreign code provisions concerning seismic design of masonry structures.

Chapter 3 sum ups differentiations in seismic design provisions explained in the 1995 and 2005 editions of NBCC, and the 1994 and 2004 editions of CSA S304.1. Designers having ideas on the brief seismic and masonry design problems naratted in Chapters 1 and 2, can shift directly to this summary chapter. The differentiations in code provisions are explained in a tabular format. This chapter also synopsizes the viii results of a case study concerning a typical warehouse building designed following NBCC 1995 and NBCC 2005. This construction artilce also focus on three Canadian locationsdefined by various seismic hazards (Vancouver, Calgary, and Toronto).

Chapter 4 offers explanatory design instances of seismic load estimates and allocation of forces to members as per NBCC 2005, and the design of loadbearing and nonloadbearing masonry elements to CSA S304.1-04. The outline of masonry buildings and the mechanical characteristics of their components in the examples are provided to cope up with the circumstances often faced in design practice, specifically when these associated with the torsionally unsymmetric buildings. These explanations set out in a progressive manner, involving adequate examples and proper demonstrations required to modify the design process. Appendix C offers related background information toward the design examples, along with an comprehensive discussion of in-plane wall stiffness. Appendix D offers design assistances applied in the Chapter 4 examples.

Seismic Design Guide for Masonry Buildings download

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Rajib Dey
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## Monday, September 21, 2015

### How to construct a garden wall within 10 minutes through Marshall profile

Noel Marshall, the managing director of Marshall Tools Ltd and a pioneer in developing wall building tools since 2000, has presented an exclusive construction video that focuses on how to construction a L-shaped typical sized garden wall in quickest possible time (within 10 mins) maintaining standard as well as perfect accuracy & matchless competency through Marsahll Profiles.

Marshall profile is the brainchild of Noel. The length of the wall is 16 bricks and width is 10 bricks and height is 12 course from basement.

Bricky : Wall Building Tool - Buy

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Rajib Dey
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## Saturday, September 19, 2015

### Concrete Foundation Estimator is an useful construction app to speed up the estimating & bidding on concrete jobs

Concrete foundation estimator (CFE) is considered as the most useful and powerful productivity tool specifically designed for all contractors, owner-builders and homeowners to ease & augment the estimating and bidding processes for concrete projects. This constrtuction tool contains more than 300 logic formulas which function in background.

This useful construction app includes the following features :-

• Reduce the time for estimating significantly and you can create estimate within 5-10 minutes and at the same enhance your sales greatly.
• Extend the amount of estimates perfomred each day
• Reduce the work or process based on guesses or assumptions
• Reduce the time exhausted on the formation of materials take-off list toward maetrial supplier.

CFE app produces professional, adjustable, simplified construction bid, estimate, quote together with the following segments :-

• destruction of existing concrete slabs and footings
• compute excavation volume and cost by applying manual labor or machinery
• Remove soil hauling and dumping fees
• Crush concrete hauling and dumping fees
• Estimate the cost of materials and volume for: Footings, Stem walls, Piers, Slabs, Reinforcement, Shear walls, Anchor bolts, All thread retrofits, Concrete ready-mix or in bags, Volume, cost and waste %, Labor for piers, reinforcement assembly and concrete pouring, Cost of concrete pumping
• Brief estimate for foundation
• Adaptable Workman’s compensation rate
• Sales tax in your area for all materials
• Custom fields to include in estimate

The homeowners, contractors as well as other professionals who are going to develop a house or make an addition, can use this construction app to quickly compute their cost by adding essential values out of engineering plans.

An estimate can be generated that contains the following features :-

• thorough, cataloging all trades labor, materials.
• Basic, cataloging only trades and it’s cost.
• By trade, presenting any trade according to your selection.
• Also include overhead and discount.

Share or bid:

• Email quote for concrete job to any client inside the app in PDF
• transform estimate to Excel and personalize output
• Email list of materials to your supplier

This construction app allow the homeowners and owner-builders to match quotes from various contractors.

CFE offers pre-arranged settings which can be customized according to your own level of price, time and application of materials.While using it first time, just persue all sections and update preset values. Just update material or labor cost sometimes. Future app version will provide the facility to update materials cost occassionally.

It also includes in-built portfolio page to preserve all of your projects and the users will be able to recover and adjust estimates instantly, make amendments, generate PDF quotes or Excel supported adaptable spreadsheets.

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Rajib Dey
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## Friday, September 18, 2015

### How to make estimates for road with Autocad

Super Civil 3D introduces a very informative online construction video through their youtube video channel. This construction tutorial is useful Civil Engineers, Road Builders, Contractors, Project Managers & Students. By going through this online presentation, the construction professional can learn how to use Autocad for creating estimates for roads & highways which cover QUANTITY ESTIMATION OF ROAD WORKS , EARTHWORK CALCULATIONS , CROSS & L SECT.

Watch the following demo video that focuses on how it works.

For more information, visit www.supercivilcd.com / www.agboatwala.com

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Rajib Dey
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## Thursday, September 17, 2015

### Bricky - An exclusive construction tool to provide a professional finish to your brick

Noel Marshall, the professional tool evaluator has developed Bricky. It is very useful for constructing wall in a structure.

With this construction tool, the builders can maintain a perfect standard following building regulation with constancy of walls. This construction tool is available in three different sizes 100 mm, 140 mm and 215 mm.

The tool makes sure that a precisely consistent bed of mortar is placed between courses of bricks and blocks. It perfectly works with standard brick and block on-edge construction in both US and Metric (W x D x H) dimensions:

Usefulness :-
• Accurately spaced clean joints having no mess.
• Produce your own brick planters, raised vegetable gardens, boundary walls, home extensions etc.
• Give a superior quality professional finish to your brick with raised flower bed, BBQ, fire pit, firewood storage unit, brick or block fence or entrance wall, mailbox base, fish pond or water feature, garage, workshop, home addition, porch, or entryway.

 Image Courtesy: bricky.com

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Rajib Dey
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## Wednesday, September 16, 2015

### Start digital takeoff of your construction project with Takeoff Live

Takeoff Live is a cost effective and user-friendly digital takeoff software that is used to virtually generate any digital file for your quantity surveys and work out lengths, areas, counts, and volumes. One can start calculation with square footage, lineal footage, and even volumes instantly. With just a simple click, all the records can be exported to Excel. One can take help from the internal spreadsheet to provide prices for labor, material, subcontactors, equipment, and other costs.

This construction estimating software provides following benefits to the architects, contractors and subcontractors.