Bow-Fix

Repair Strategies

BF-01 - Fixing Bow-Fix Into Joist Ends

BF-02 - Fixing Bow-Fix Into Sides Of Joists

BF-03 - Repairing Bay Windows

BF-04 - Fixing Bow-Fix Into Timber Frame

BF-05 - Fixing Bow-Fix To Cavity Walls



BF-01 - Fixing Bow-Fix Into Joist Ends

To download a technical data sheet on this repair strategy, please click here...

(1) Locate positions of joist ends and mark on the external side of wall.

(2) Drill 12mm clearance holes through masonry in line of and centre of the joist ends.

(3) Clear hole of any dust or loose debris using a air-pump.

(4) Load bow-fix into support tool and insert through clearance hole, then hammer bow-fix into joist end to the required depth .

(5) Inject Tri-resin hole and completely fill.

(6) Make good surface of holes using colour matching dyed mortar.

Installation Notes: Unless specified otherwise the following criteria are to be used.

a) Minimum penetration depth into end grain of timber to be 50mm.

b) Install Bow-fix ties into every joist end in area concerned.

BF-02 - Fixing Bow-Fix Into Sides Of Joists

To download a technical data sheet on this repair strategy, please click here...

(1) Locate positions of joists and mark on the external side of wall.

(2) Drill 12mm clearance holes through masonry and first joist in line with centre of joists.

(3) Clear hole of any dust or loose debris using a air-pump.

(4) Load bow-fix into support tool and insert through clearance hole, then hammer bow-fix into second joist to the required depth .

(5) Inject Tri-resin into hole and completely fill.

(6) Make good surface of holes using colour matching dyed mortar.

Installation Notes: Unless specified otherwise the following criteria are to be used.

a) Minimum penetration depth into timber to be 50mm.

b) Bow-fix ties to be installed at 600mm horizontal centres.





BF-03 - Repairing Bay Windows

To download a technical data sheet on this repair strategy, please click here...

Use Bow-Fix detail BF-01 to tie joist ends which run perpendicular to front elevation of Bays

Use Bow-Fix detail BF-02 to tie joists which run parallel to front elevation of Bays.

NOTE: Further additional repair methods may well be required depending on the condition of the bay masonry. See repair methods TB14 to TB16and CF12.

BF-04 - Fixing Bow-Fix Into Timber Frame

To download a technical data sheet on this repair strategy, please click here...

(1) Locate positions of joist ends and mark on the external side of wall.

(2) Drill 12mm clearance holes through masonry in line with the centre of the joist ends.

(3) Clear hole of any dust or loose debris using a air-pump.

(4) Load bow-fix into support tool and insert through clearance hole, then hammer bow-fix into joist end to the required depth .

(5) Inject Tri-resin into hole and completely fill.

(6) Make good surface of holes using colour matching dyed mortar.

Installation Notes: Unless specified otherwise the following criteria are to be used.

a) Minimum penetration depth into end grain of timber to be 50mm.

b) Install Bow-fix ties into every joist end in area concerned.





BF-05 - Fixing Bow-Fix To Cavity Walls

To download a technical data sheet on this repair strategy, please click here...

Use Bow-Fix detail BF-01 to tie joist ends which run perpendicular to walls and install remedial wall ties between joists

Use Bow-Fix detail BF-02 to tie joists which run parallel to wall and install remedial wall ties between joists

TRISET PRODUCT DATA SHEET

DESCRIPTION

Triset is a rapid curing 'one shot' two part chemical anchoring cartridge system based on a polyester resin. Applied in one single action to produce a cost effective, tough, chemical resistant fixing. Triset is ideal for close-to edge applications (unlike expansion anchors) as no stress is placed on the surrounding substrate. Versatile in use, Triset is suitable for fixing wall ties, starter bars, studs, bolts or large screws in a wide range of substrates including brickwork, concrete, masonry, stone and PF A blocks. Hollow base materials can be securely fastened into by using Triset in conjunction with a sleeve or sieve.

PREPARATION

1. Drill hole to the correct diameter and depth (see chart for guide), ideally using a rotary percussion machine. For optimum results the hole must be coarse sided. If the holes are produced by diamond drilling the surfaces should be thoroughly roughened.

2. Remove all dust and debris from the hole using a hand air pump or a stiff rotary brush.

3. All bars should be clean and free from oil or grease and all flaking rust should be removed. Threaded rod or struts should be chisel-ended to prevent them being unscrewed from the cured resin.

APPLICATION

1. Attach the mixing nozzle to the cartridge (screw down hand tight).

2. Mount the cartridge into the dispensing gun.

3. Squeeze out material through the nozzle until an even colour is achieved (approximately 5-6 inches of extruded material should be adequate).

4. Apply to the hole working from the base out. Once the required fill is obtained release the pressure and wipe away excess material. Place the bolt or screw into the hole with a rotary action. Wipe away excess material. Attach fixture once resin has cured.

NB Once material has started to extrude through the nozzle over pressuring the system will not increase flow rate. And can cause leakage from the rear of the cartridge.

TECHNICAL DATA

MIXING RATIO 10: 1 by volume
Supplied in 380ml cartridges

ULTIMATE PHYSICAL PROPERTIES

Tensile Strength (ASTM 638) -> 1ON/mm sq.
Compressive Strength (ASTM 695) -> 78N/mm sq.
Flexural Strength (ASTM 790 - 21N/mm sq.
Elastic Modulus - 4570N/mm sq.
Mixed Density - 1.65g/cm sq.

The above physical properties were arrived at independently by Birmingham City Laboratories.

Tension figures quoted are tested in accordance with BS5080 part 1 in 63 N/mm sq concrete blocks (12 x 12 x 12 inches). In all cases for 16mm and 20mm anchors failure of the concrete block was observed before the anchor was dislodged.



The ultimate pull out strength is varied by:
1. The strength of both the substrate and bar/stud
2. The length of the resin bond to bar
3. Hole preparation
4. Anchor separation

Safety factors of between 2:1 and 4:1 should be considered depending on the strength and nature of the substrate. Due to the inconsistent nature of hollow blocks and bricks tension figures may vary. Site testing should be carried out where necessary to establish particular suitability. In order to achieve maximum performance the distance between the centres of the anchors should be a minimum of2.5 x the embedment depth, and 1.25 x the embedment depth for the minimum distance from edges.

STORAGE

Store in a dry area between 5 C and 25 C. Do not expose to direct sunlight. Storage at higher temperatures will reduce the shelf life.

HEALTH AND SAFETY DATA

Triset contains styrene and is flammable. Do not smoke and do not allow naked flames to come into contact with this material. Avoid breathing vapour and wear suitable protective clothing such as gloves and overalls. On contact with skin wash off immediately with plenty of soap and water.

IMPORTANT

The information and data given is based on our own experience, research and testing and is believed to be reliable and accurate. However, as Wallfast Ltd. cannot know the varied uses to which its products may be applied, or the methods of application used, no warranty as to the fitness or suitability of its products is given or implied. It is the users responsibility to determine suitability of use. For further information, please contact our Technical Department.

MATERIAL SAFETY DATA SHEET

1. IDENTIFICATION OF SUBSTANCE/PREPARATION AND COMPANY

Product Name: TRI-SET POLYESTER RESIN

Company: Wallfast Ltd - Portsmouth - PO3 6FH

Chemical Name & Synonyms: Unsaturated Polyester Resin in Styrene.

For Information: 023 92298443 (8.30am - 4.30pm)

In an Emergency: As above

2. COMPOSITION/INFORMATION OF INGREDIENTS

Hazardous Components: Cas Number Percentage

Styrene 100-42-5 30-50 %

3. HAZARDS IDENTIFICATION

Harmful by inhalation. Irritating to eyes and skin. Flammable.

Signs and Symptoms of Exposure (Acute Effects) Irritant to skin, eyes and respiratory tract.

Signs and Symptoms of Exposure (Possible Long Term Effects). Irritant can cause skin disorders with repeated prolonged exposure. Inhalation of vapour can cause nausea and headaches.

4. FIRST AID MEASURES

Summon immediate medical assistance after
contact with skin, eyes, inhalation or ingestion.
Eye: Irrigate with clean running water for at least 15 minutes. Seek medical attention.

Skin: Remove from skin with plenty of soap and water. Remove contaminated clothing. If irritation persists, seek medical advice.

Ingestion: Drink plenty of water. Seek medical attention. DO NOT INDUCE
VOMITING.

Inhalation: Move patient to fresh air and allow to rest. If patient is slow to recover or unconscious, obtain medical assistance immediately.
First Aiders should protect themselves from exposure (Refer to Section 8)

5. FIRE FIGHTING MEASURES

Extinguishing Media: CO2/ Foam/ Dry Chemical.

Exposure Hazards: Flammable, sealed containers heated can pressurise leading to explosion. Emits acrid black smoke and irritating fumes when heated to decomposition.

Fire Fighting Equipment: N/A

6. ACCIDENTAL RELEASE MEASURES

Do not discharge into sewers. Dike spilled material with liquid absorbent. Scrape or pump into a suitable container. Wash area with water.

Refer to section 5, 8 and 13 for Protective Measures and Disposal.

7. HANDLING AND STORAGE

Store in a cool, dry and well ventilated area. Store away from direct sunlight.

When handling, suitable protective clothing should be worn. (Refer to section 8)

8. EXPOSURE CONTROLS/PERSONAL PROTECTION
OCCUPATIONAL EXPOSURE LIMITS.

Long Term: 100 ppm (UK)
Short Term: 10 minutes 250ppm (UK)

Respiratory: If forced air extraction is not available in enclosed areas an organic vapour mask will be required, if the occupational exposure limit is exceeded.

Ingestion: Unlikely during normal use.

Skin Protection: Wear gloves at all times.

Eye Protection: Not normally required during normal use. If splashing occurs, goggles should be worn.

9. PHYSICAL/CHEMICAL PROPERTIES

Appearance: Amber fluid.
Odour: Styrene.
Viscosity: 6-8 poise at 25 degrees C.
Specific Gravity: 1.10 g/cm3 (20 degrees C)
Boiling Point/Range: N/A
Meeting Point/Melting Range: N/A
Flash Point: 31 degrees C
Flammability: Flammable.
Auto-Flammability: 490 degrees C
Explosive Properties: Lower limit 1.1% Upper limit 6.1%
Oxidising Properties: None.
Vapour Pressure: 6.52 mb 20 C (styrene)
Evaporation Rate: N/A
Solubility: Insoluble in water. Soluble in solvents
pH: N/A
Partition Coefficient: N/A
Di-Electric Strength: N/A
Additional Information: N/A

10. STABILITY AND REACTIVITY

Stability: Can polymerise (solidify) exothermically if heated, exposed to sunlight or by addition of free radical initiators. Stable under normal conditions.

Materials to Avoid: Reacts vigorously with strong oxidising agents and peroxides.

Hazardous Decomposition: Emits acrid smoke and irritating fumes when heated to decomposition.

Hazardous Polymerisations: Polymerisations in a closed container can give rise to pressure, which may rupture the vessel.

11. TOXICOLOGICAL INFORMATION

Oral: Material is classed as harmful. An oral LD50 in rats of 5g/kg Styrene. LC50 in rats ranges between 2770-6000ppm.

Inhalation: Lung irritant can induce drowsiness and eventual unconsciousness.

Eye: Severe irritant

Skin: Moderate irritant

12. ECOLOGICAL INFORMATION

Do not discharge into drains or the environment.

13. DISPOSAL CONSIDERATIONS

In an uncured state, place in a suitable container and dispose as chemical waste in accordance with local regulations. Small quantities may be reacted with the corresponding amount of activator. Allow curing and dispose as solid waste.

14. TRANSPORT INFORMATION

Supply label: Harmful
Flammable

IMDG Code: 3379 UN No./SI No: 1866
EAC: 3 (Y) Hazard Class: 3
ADR HIN: 30 Packing Group: III

15. REGULATORY INFORMATION

Labelling: Harmful, Flammable.
Risk Phrases (R10) Flammable.
(R20) Harmful by inhalation.
(R36/38) Irritating to skin and eyes.

Safety phrases (S2) Keep out of reach of children.
(S23) Do not breathe vapour.
(S36/37/39) Wear suitable protective Clothing.
Gloves and eye/face protection.

16. OTHER INFORMATION

Our ref: SMJH

Date of Preparation: March 2002

Prepared By: S Mullineaux

The information contained within this document is furnished without warranty of any kind. Users should consider this data only as a supplement of other information gathered by them and make independent determinations of suitability and completeness of information from all sources to ensure proper use and disposal of these materials and the safety of employees customers.

Installation Procedure

Bow-Fix lateral restraint system offers a quick and easy labour saving method of restraining bowing walls to timber floor chambers.
	1 After marking the outer wall drill a 14mm clearance hole through the wall and first joist.
	2 load Bow-Fix Tie into support tool and insert through clearance hole in wall and first joist, then hammer Bow-Fix Tie into second joist to the required depth.
	3 The Bow-Fix should at this time, be load tested to check strength of fixing to required load.
	4 Then use an air pump to eliminate loose debris and dust.
	5 Using the tri-set resin, inject into the outer wall until the hole is filled, the outer wall can be made good.

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Bow-Fix General Information

BF-01 - Fixing Bow-Fix Into Joist Ends

BF-02 - Fixing Bow-Fix Into Sides Of Joists

BF-03 - Repairing Bay Windows

BF-04 - Fixing Bow-Fix Into Timber Frame

BF-05 - Fixing Bow-Fix To Cavity Walls