anchoring - presentation slides

Product SeminarBK GULF

10-09-2014

Agenda-

1. Stanley Black and Decker 2. How did Dewalt get into anchoring business? 3. Dewalt fasteners - range4. Basic Fastening concepts4. Basic Fastening concepts5. Anchor selection6. Modes of failure7. MEP applications8. Q&A/ Open Discussion

Established in 1843 by Frederick Trent Stanley, as a small hardware manufacturing shop in New Britain, CT

SBD - History

166-year reputation for product quality and service

133 years of consecutive dividends

World-class hand tools portfolio

Established in 1910 by S. Duncan Black and Alonzo G. Decker, who founded a small machine shop in Baltimore, MD

SBD - History

100-year reputation for product innovation and customer focus

72 years of consecutive dividends

SBD - History

+

2010

An S&P 500 company, with 2012 revenue of US$10.2 billion

SBD - History

6

Global supplier of consumer products, industrial tools, and security solutions for professional, industrial and consumer use

Largest hand tool company world-wide

Security SolutionsSecurity SolutionsIndustrial & AutomotiveIndustrial & AutomotiveConstruction & DIYConstruction & DIY

SBD Portfolio

8

Eng. Fastening

Infrastructure

How did DEWALT get into anchor business??

Powers Organization

Branch Office

Headquarters

Powers Organization

R&D Center

Dewalt fasteners- RangeDewalt fasteners- Range

Product Line Overview

SCREW FASTENERS

Self drilling , self tapping screws, roofing screws, etc.

Mechanical Anchors

Through-Bolt PTB-PRO

Heavy Duty PB-PRO

Screw Anchor BT

Drop In DM-PRODrop In DM-PRO

Internal Screw Snake

Undercut Atomic+

Nylon NHS-PRO, KT-PRO

OthersTapper, Sleeve, Shield, Vertigo

Adhesive or chemical anchors

• Concrete anchoring

• Masonry anchoring

• Rebar anchoring

• Concrete anchoring

• Core drilled concrete anchoring

• Rebar anchoring

AC100-PRO Pure150-PRO Pure110-PRO PV50-PRO SC-PRO

• Concrete anchoring

Forced Entry or Direct fastening

Fuel Cell

Nails

Nails and powder charges

P-nails16-76mm,Also with ballistic point

P-nails fastening on

P-nails with various washers

Powder loads in strip green, yellow, red and black

P-nails for thin steel

fastening on steel

P-nails with conduit clip

P-nails for suspended constructions

Nails on strip16-72mm

P3X nails on strip15-60mm

Powder disc yellow and red

Green: LowYellow: MediumRed: StrongBlack: Very strong

Printed Literature

Tech. Manual Buyer’s GuideProduct

Brochures

Basic fastening concepts

LOADS:

• Force / Load F: Resultant load acting in any direction

• Tension loads N: Load component acting in axial direction

• Shear loads V: Load component acting perpendicular to the anchor axis

• Moment M: load acting with lever armN

FN

V

F

Mechanical Adhesive

Expansion Screw Undercut

Torque-controlled DisplacementControlled.Bolt-type Sleeve-type

Cone Expansion

element

Sleeve

Expansion element

Cone Thread Undercut element Adhesive

Plug

Friction Mechanical interlock Bond

DEWALT Products

Bolt-typeExpansion Anchor

“Throughbolt”

Sleeve-typeExpansion Anchor

“Heavy Duty Anchor”

Screw Anchor

AdhesiveAnchor

UndercutAnchorDrop-in

• PTB• PTB-SS

• PB• PB-SS

• DM • BT• Snake

• Atomic

• AC100• Pure150• PV 50 • SC Pro

Base Plate and Member GeometryBase Plate and Member Geometry

Base plate design includes thickness and projection of the anchors required to

• Anchor spacing s

• Edge distance c

• Member thickness h

Meeting minimum dimensions helps in avoiding splitting of base material during installation

anchors required to avoid plateyielding

Anchor Installation ParameterAnchor Installation Parameter

• hef - Effective embedment depth

• h1 - Borehole depth

• hmin - Minimum member thickness

• d0 - Nominal drill bit diameter0

• df - Diameter of hole clearance in fixture

• tfix - Thickness of fixture

• Sw - Socket size of wrench

Anchor SelectionAnchor SelectionAnchor SelectionAnchor Selection

Technical Approvals and Listings

• ETA: - Option 1 for cracked concrete- Option 7 for uncracked concrete- Part 6 for multiple anchors in non-structural applications- Part 6 for multiple anchors in non-structural applications

• ESR: In contrast to mechanical anchors (inch/metric), theadhesive qualified for ETA and ESR is identical. In conclusion, ESR complements ETA approved adhesive anchoring systems.

• Fire Rating: - Included in the ETA for mechanical anchors- Additional Report for adhesive anchoring systems

• NSF: US certification of chemical harmlessness in potable water

• VOC: Indoor air Quality measure

Base Material: Concrete

• Uncracked concrete: Concrete in compression

• Cracked concrete: Concrete in tension

If uncracked concrete is not proven by design, cracked concrete has to be assumed

Reinforcement in concrete is an indicator for this zone being tensioned and thus cracked.

deformation

Tension zonecracks

Cracked concrete!

Compressive zoneUncracked concrete

Base Material: MasonryBase Material: Masonry

• Solid bricks: Bricks with less than 15% voids

• Hollow bricks: Bricks with large voids, load transfer is assured by sleeves

In general, masonry requires adhesive anchoring systems, in particular for hollow bricks.

Base Material: OthersBase Material: Others

• Hollow bricks: Bricks with large voids, load transfer is assured by sleevespreventing uncontrolled flow of the adhesive into the caverns

• Wood

• Steel

• Plasterboard

Not within the scope of engineered anchors and their design

Atmospheric Exposure

• Dry internal conditions: Carbon steel, zinc plated

• Atmospheric external conditions: Stainless steel (SS316 / A4)• Atmospheric external conditions: Stainless steel (SS316 / A4)

• Particular aggresive conditions: High corrosion resistance (HCR) steel- Splash zone of sea water- Chloride atmosphere of indoor swimming pools- Industrial air with extreme chemical pollution- Road tunnels

Ambient Temperature

• Installation temperature: Low temperatures during curing slow downchemical reaction and reduces bond strength

Temperature impacts curing and properties of adhesives

chemical reaction and reduces bond strength

• Service temperature (Short term / Long term): High temperatures increasecreep, i.e. displacements under permanent load

- Short term temperatures vary over short intervals, e.g. day/night- Long term temperatures will be approximately constant over time

Water During Installation

• Wet boreholes: Adhesive is approved for wet boreholesNote: ETAs recognizes only dry/wet category;

ESRs differentiate between dry and wet boreholes

Curing of adhesives may be inhibited by water or moisture

ESRs differentiate between dry and wet boreholes

• Flooded holes: Adhesive can be installed in water filled holes

Loading Types

• Static: Dead loads and other permanently or temporarily acting loadsincluding snow

• Qasi-static: Live loads varying at low rates such as traffic and moving loads

• Seismic: Earthquake actions resulting in cyclic loads and cycled cracks• Seismic: Earthquake actions resulting in cyclic loads and cycled cracks

• Wind: Load demands deriving from moderate wind are covered bythe approval for quasi-static loading

• High wind: Generally, anchors are considered fit for applications in areasprone to typhoons if they are approved for seismic loading

Installation Types

• Preset installation: Anchor is installed first and then the fixture is attached→ Common procedure for adhesive anchors→ Required for anchors which are larger in diameter→ Required for anchors which are larger in diameter

than the clearance hole in the fixture (e.g. DM,Snake and Atomic through-type)

• Through installation: Fixture is placed first and then the anchor is installed→ Mechanical anchors with a formed head

(e.g. PB and BT) require through installation

• Standoff installation: Element to be anchored is mounted at a distance to the surface of the base material, thus creating abending moment in the anchor→ Not possible for anchors with a formed head

Redundant Anchorage

Anchors qualified according to ETAG 001 Part 6 are only approved for ‚ multiple use for non-structural applications. This means that this anchor and size may only be used for redundant ancorage of non-structural components and systems (NSC).and systems (NSC).

Core Drilling

In contrast to hammer drilled boreholes, diamond drilled boreholes have a very smooth surface reducing micro-locking and thus bond strength of the adhesive. For this application, adhesive anchoring systems need specific approval.approval.

Diamond-drilling is mainly used for:

• Large borehole diameters

• Multiple boreholes

• Boreholes in densely reinforced concrete

micro-locking

MODES OF FAILURE

NV

ANCHOR FAILURE(Steel)

Tension forces N Shear forces V

Steel failure

Steel failure

CCD-Method

α

V

BASE MATERIALFAILURE(Concrete)

concrete cone

failure

splitting

failure

pull-out

failure

.

edge

failure

pry-out

failure

Approvals and Verification

Regular 3 rd Party QC Verification Audits at all Production Poin ts

TECHNICAL SUPPORT

DATA COLLECTION FORM

Failure occurs due to-

1. Incorrect installation•We can provide training on job site•We can provide verification by a pull out test that the installation was carried out alright or not

2. Wrong anchor selection

3. Lack of design

•We can advice at the point of sale

• DDA •Technical services to design anchor cases

We have 2 types of machines-1. Hydraulic- Post installed rebar(max T25) and anchors

in concrete upto (M12- M24) 300KN 2. Hydrajaws – anchors in weaker base materials,

concrete (M8-M10) up to 30KN

MEP anchoring applicationsMEP anchoring applications

ELECTRICAL-

For suspending cable trays, bus bars andtrunking on the underside of slabs anchorsare used. These anchors should haveapproval for cracked concrete andguidelines for redundant fastening shouldbe followed. Any of these anchors couldbe used, depending on the situationbe used, depending on the situation

PTB PRO

DM PRO

VERTIGO

ELECTRICAL-

Where electrical services are floorsupported, a range of anchors can beused. Mechanical anchors are morepopular than chemical fixings here.

Any of these anchors could be used,depending on the situation

PTB PRO

DM PRO

FHS

ELECTRICAL-In electrical shafts/risers to fix bus barand cable trays onto the shaft wall arange of anchors are required. The basematerial could be concrete or block . Anyof these anchors could be used ,depending on the situation

PTB PRO

DM PRO

SAP

FHS

AC 100

PLUMBING-

For suspending pipes on the underside ofslabs anchors are used. These anchorsshould have approval for cracked concreteand guidelines for redundant fasteningshould be followed. Any of these anchorscould be used, depending on the situation

Also there might be a requirement for firerating on the anchors

PTB PRO

DM PRO

VERTIGO

PLUMBING-

In pipe shafts/risers to fix pipes onto theshaft wall a range of anchors are required.The base material could be concrete orblock. Any of these anchors could beused, depending on the situation

PTB PROPTB PRO

DM PRO

SAP

FHS

AC 100

DUCTING AND CHILLED WATER-

For suspending CHW pipes and ducts onthe underside of slabs, anchors are usedalong with supports. These anchors shouldhave approval for cracked concrete andguidelines for redundant fastening shouldbe followed along with other relatedstandards. Any of these anchors could bestandards. Any of these anchors could beused, depending on the situation

PTB PRO

DM PRO

VERTIGO

HEAVY SUPPORTS-

When heavy pipes and other HVAC componentsneeds to be supported they are normallysupported onto concrete. Any of these anchorscould be used, depending on the situation

In certain conditions anchors are subjected to loads that are dynamic in nature and where they need to have an seismic approval or rating.

Q&A/Open discussionQ&A/Open discussion

THANK YOUTHANK YOU