I85PREP
⌘ K
ACI Adhesive Anchor Inspector study materials
ACI Adhesive Anchor Inspector study resources

ACI Adhesive Anchor Inspector practice questions

One question at a time. Build your ACI Adhesive Anchor Inspector understanding.

First 50 of 200 questions. Each one lists the choices, the correct answer, and an explanation. The checker at the top of this page saves progress in this browser when it is available.

Continue in the practice tool above to load more questions, 50 at a time.

Question 1Adhesive Anchor Installation Inspection

Before dispensing adhesive into a drilled hole, the inspector should confirm that the hole has been cleaned according to the adhesive manufacturer's written instructions because residual dust primarily does what?

  1. Increases the open time of the adhesive cartridge
  2. Accelerates the cure of the adhesive in cold weather
  3. Reduces the bond between the adhesive and the concrete wall of the hole Correct answer.
  4. Prevents the anchor rod from reaching the bottom of the hole

Explanation

Dust and debris on the hole wall act as a bond breaker between the adhesive and the concrete, reducing load capacity. Manufacturer instructions specify the required cleaning method (brushing and blowing) and the number of cycles. Inspection verifies the cleaning was performed as written before dispensing.

Question 2Adhesive Anchor Installation Inspection

An inspector observes a technician blowing out a drilled hole with oil-free compressed air but not brushing it. Per typical manufacturer instructions, the hole cleaning is:

  1. Complete, since air blowing removes all debris
  2. Acceptable only for horizontal holes
  3. Acceptable only if the hole is deeper than the embedment
  4. Incomplete, because brushing is also required to remove dust from the wall Correct answer.

Explanation

Most adhesive anchor systems require both mechanical brushing and blowing to remove dust from the hole wall. Brushing loosens adhered dust that air alone will not dislodge. The inspector should stop the installation until the specified cleaning sequence is followed.

Question 3Adhesive Anchor Installation Inspection

The primary purpose of the installation instructions printed on the adhesive cartridge or product data sheet is to:

  1. Specify the concrete mix design for the project
  2. Define the manufacturer's required installation parameters and limitations Correct answer.
  3. List the retail price of the product
  4. Provide marketing information about the product line

Explanation

Manufacturer printed instructions define the parameters under which the anchor is qualified, including hole size, cleaning, temperature limits, and cure times. The inspector compares field practice to these instructions. Deviating from them invalidates the basis of the anchor's qualification.

Question 4Adhesive Anchor Installation Inspection

During installation, the inspector notes the ambient concrete temperature is 40°F (4°C). The adhesive product data sheet lists a minimum installation temperature of 50°F (10°C). The correct inspector action is to:

  1. Allow installation because the adhesive will eventually cure
  2. Require the use of a different adhesive system qualified for that temperature or wait until conditions meet the minimum Correct answer.
  3. Allow installation if the cure time is doubled
  4. Allow installation if the technician warms the cartridge in a bucket of hot water

Explanation

Installation outside the manufacturer's stated temperature range is not permitted because the product has not been qualified under those conditions. The inspector must require an adhesive qualified for the temperature or delay work. Warming the cartridge does not change the qualified substrate temperature range.

Question 5Adhesive Anchor Installation Inspection

The gel time (working time) of an adhesive anchor product is best described as:

  1. The time available to insert the anchor and complete adjustments after dispensing Correct answer.
  2. The time required for the adhesive to reach full design strength
  3. The shelf life of an unopened cartridge
  4. The time between cartridge opening and disposal

Explanation

Gel time is the interval after mixing during which the adhesive remains workable so the rod can be inserted and positioned. Exceeding gel time means the rod may not be properly embedded. Cure time, by contrast, is the period before loading.

Question 6Adhesive Anchor Installation Inspection

An inspector sees a technician reinsert a rod into a hole after the adhesive's gel time has expired and the adhesive has begun to stiffen. The inspector should:

  1. Accept the installation if the rod is fully seated
  2. Accept the installation if the rod is rotated during insertion
  3. Accept the installation if extra adhesive is added on top
  4. Reject the installation and require the hole to be re-drilled and the anchor reinstalled Correct answer.

Explanation

Once gel time has passed, the adhesive can no longer wet the rod and hole wall properly, so the anchor is not installed per the qualified procedure. The typical remedy is to abandon that hole, drill a new one at the specified spacing, and reinstall. Adding adhesive or rotating the rod does not restore the bond.

Question 7Adhesive Anchor Installation Inspection

When dispensing a two-component adhesive cartridge, the inspector should verify that the initial extruded material is discarded until:

  1. The cartridge is half empty
  2. The material begins to warm noticeably
  3. A uniform, consistent color is achieved across the mixed material Correct answer.
  4. The nozzle is fully seated against the hole

Explanation

The first portion of extruded material may not be uniformly mixed and must be discarded until a consistent color appears. This confirms proper mixing of the two components. Installing with improperly mixed adhesive produces inadequate strength.

Question 8Adhesive Anchor Installation Inspection

The inspector observes that the technician dispenses adhesive into the hole starting at the back of the hole and withdrawing the nozzle as the hole fills. This practice is:

  1. Incorrect, because adhesive should be injected at the hole face
  2. Incorrect, because the nozzle should be removed before dispensing
  3. Correct, because it helps avoid entrapping air voids in the adhesive Correct answer.
  4. Correct only for overhead installations

Explanation

Dispensing from the bottom of the hole while withdrawing the nozzle helps fill the hole without trapping air pockets. This is a common requirement in adhesive anchor instructions. Air voids reduce the effective bond area.

Question 9Adhesive Anchor Installation Inspection

Embedment depth of an installed adhesive anchor is verified by the inspector primarily to confirm that:

  1. The adhesive cartridge was within its shelf life
  2. The rod extends above the concrete the specified amount and reaches the required depth in the hole Correct answer.
  3. The concrete has reached its design strength
  4. The hole diameter matches the drill bit used

Explanation

Embedment depth controls the anchor's capacity, and the inspector verifies the rod reaches the specified depth in the hole and projects the required length above the surface. This is checked before the adhesive cures. Hole diameter is a separate check.

Question 10Adhesive Anchor Installation Inspection

The inspector finds that the drilled hole diameter is larger than the diameter specified for the adhesive anchor. The correct response is to:

  1. Reject the hole and require it to be re-drilled at the specified diameter Correct answer.
  2. Proceed if the embedment depth is increased
  3. Proceed if the hole is cleaned twice
  4. Proceed, since more adhesive will fill the gap

Explanation

The adhesive anchor is qualified only for the specified hole diameter, which controls the adhesive annulus thickness. An oversized hole can reduce bond and is not permitted. The hole must be re-drilled at the specified diameter.

Question 11Adhesive Anchor Installation Inspection

After the adhesive has cured, the inspector observes that the anchor rod can be rotated by hand with little resistance. This observation most likely indicates:

  1. The adhesive did not properly bond or the anchor was installed improperly Correct answer.
  2. The anchor is ready for immediate loading
  3. The concrete is at the correct temperature
  4. The anchor has achieved full design capacity

Explanation

A rod that spins freely after cure suggests the adhesive did not bond to the rod, hole, or both, or that installation deviated from the instructions. This is a defect requiring investigation and possible replacement. Properly bonded anchors should not rotate freely.

Question 12Adhesive Anchor Installation Inspection

The inspector should verify that anchor holes are located at the specified spacing and edge distance because:

  1. Edge distance only affects appearance
  2. Larger spacing always increases capacity beyond design
  3. Smaller spacing and edge distances can reduce anchor capacity or cause concrete failure Correct answer.
  4. Spacing affects only the adhesive cure time

Explanation

Anchor capacity depends on the spacing between anchors and the distance to concrete edges. Installing closer than specified can cause concrete breakout or splitting failures. The inspector verifies layout against the design.

Question 13Adhesive Anchor Installation Inspection

The inspector notes a technician is installing an overhead adhesive anchor and adhesive drips from the hole during rod insertion. The technician should:

  1. Add more adhesive from the top after insertion
  2. Stop and follow manufacturer guidance, as dripping may indicate improper fill or technique Correct answer.
  3. Continue, since dripping indicates good mixing
  4. Continue, since overhead anchors cannot be inspected

Explanation

Excessive dripping in overhead installations may indicate the hole is not properly filled or the technique is incorrect. Manufacturer instructions may require special procedures for overhead work. The inspector should require the technician to follow those instructions.

Question 14Adhesive Anchor Installation Inspection

Which document should the inspector consult to determine the required cure time before the anchor may be loaded?

  1. The adhesive manufacturer's product data sheet and installation instructions Correct answer.
  2. The concrete delivery ticket
  3. The drill bit manufacturer's catalog
  4. The project schedule

Explanation

Cure time is specified by the adhesive manufacturer and varies with product and substrate temperature. The product data sheet and installation instructions give the required cure times. The inspector uses these to determine when loading may begin.

Question 15Adhesive Anchor Installation Inspection

The inspector observes that the technician has not marked the embedment depth on the drill bit or rod. Why is this a concern?

  1. It affects the color of the adhesive
  2. It prevents the cartridge from being inserted
  3. Without a depth mark, the technician cannot reliably confirm the required embedment depth Correct answer.
  4. It changes the gel time of the adhesive

Explanation

Marking the drill bit or rod at the required depth allows the technician to verify embedment. Without a mark, depth cannot be reliably confirmed, and the anchor may be installed too shallow. The inspector should require depth marking before drilling.

Question 16Adhesive Anchor Installation Inspection

A cartridge of adhesive has passed its expiration date. The inspector should:

  1. Allow use only in horizontal holes
  2. Reject the product and require an in-date cartridge Correct answer.
  3. Allow use if the cartridge appears full
  4. Allow use if the cure time is extended

Explanation

Expired adhesive is not qualified for use because its properties may have degraded, affecting mixing and strength. The inspector must reject expired product. The expiration date is printed on the cartridge and should be checked before installation.

Question 17Adhesive Anchor Installation Inspection

The inspector is reviewing a completed installation and notes that the technician did not record the installation date, adhesive batch, and cure time. Why is this documentation important?

  1. It is only needed for billing purposes
  2. It determines the concrete mix design
  3. It replaces the need for field inspection
  4. It provides traceability and supports verification that loading occurred after cure Correct answer.

Explanation

Records of date, batch, and cure time provide traceability and demonstrate that the anchor was not loaded before cure. This documentation supports quality assurance and future investigation. It does not replace inspection.

Question 18Adhesive Anchor Installation Inspection

The inspector observes a technician drilling a hole with a bit that shows noticeable wear and produces an oversized hole. The technician should:

  1. Continue drilling, since adhesive will fill the gap
  2. Increase the embedment depth to compensate
  3. Use a smaller rod in the same hole
  4. Replace the bit with one of the specified diameter and re-drill the hole Correct answer.

Explanation

Worn bits produce holes larger than specified, which are not qualified for the adhesive anchor. The technician must use a bit of the correct diameter in good condition and re-drill. Hole diameter is a critical inspection item.

Question 19Adhesive Anchor Installation Inspection

Which of the following best describes the inspector's role during adhesive anchor installation?

  1. Approving changes to the structural design
  2. Performing the drilling and dispensing work
  3. Designing the anchor layout
  4. Verifying that installation follows the approved instructions and specifications Correct answer.

Explanation

The inspector verifies that the installation matches the approved instructions and project specifications. Design changes are the responsibility of the engineer of record, not the inspector. The inspector documents observations and nonconformances.

Question 20Adhesive Anchor Installation Inspection

During inspection, the technician asks whether the anchor can be loaded immediately after insertion because the concrete is warm. The correct basis for the answer is:

  1. The adhesive manufacturer's cure time for the actual substrate temperature Correct answer.
  2. The number of anchors installed that day
  3. The project schedule
  4. The color of the adhesive

Explanation

Cure time before loading is specified by the manufacturer and depends on substrate temperature. Warm concrete shortens cure time but does not eliminate it. The inspector should use the manufacturer's table for the measured temperature.

Question 21Adhesive Anchor Installation Inspection

The inspector notices that the technician is mixing adhesive by hand from bulk containers rather than using the specified cartridge system. The inspector should:

  1. Reject the method unless it is the manufacturer's approved system Correct answer.
  2. Allow it if the mix ratio appears correct
  3. Allow it if the technician is experienced
  4. Allow it if the cure time is doubled

Explanation

Adhesive anchor systems are qualified as complete systems, including the mixing and dispensing method. Hand mixing from bulk is not permitted unless it is the manufacturer's approved system. The inspector must require the specified system.

Question 22Adhesive Anchor Installation Inspection

The inspector observes that a hole has been drilled through a rebar and the technician intends to install the anchor in the same location. The correct action is to:

  1. Relocate the hole per the engineer's direction and re-drill Correct answer.
  2. Proceed, since the hole is already drilled
  3. Install the anchor at a shallower depth in the same hole
  4. Fill the hole with adhesive and reuse it

Explanation

Cutting or damaging reinforcement can affect structural integrity, and the anchor location should be relocated per the engineer's direction. The damaged hole is not suitable for the anchor. The inspector should document the condition and obtain direction.

Question 23Adhesive Anchor Installation Inspection

The inspector should verify that the anchor rod is clean and free of oil, dirt, or scale before insertion because:

  1. Scale increases the embedment depth
  2. Oil improves the bond with the adhesive
  3. Contaminants on the rod can reduce the adhesive-to-rod bond Correct answer.
  4. Clean rods cure faster

Explanation

Contaminants on the rod surface act as a bond breaker between the adhesive and the steel. The manufacturer requires clean rods before insertion. The inspector verifies rod condition as part of the installation check.

Question 24Adhesive Anchor Installation Inspection

The inspector is asked to verify that the adhesive has fully cured before the anchor is proof loaded. The most reliable basis for this determination is:

  1. The ambient humidity
  2. The technician's estimate of elapsed time
  3. The manufacturer's cure time table for the measured temperature and elapsed time Correct answer.
  4. The color of the exposed adhesive

Explanation

The manufacturer specifies cure times as a function of substrate temperature. The inspector compares elapsed time and measured temperature to that table. This provides a documented basis for permitting loading.

Question 25Adhesive Anchor Installation Inspection

Which condition would most likely require the inspector to reject an adhesive anchor installation?

  1. The rod was clean and free of oil before insertion
  2. The adhesive was dispensed from the bottom of the hole while withdrawing the nozzle
  3. The anchor was installed after the adhesive's gel time had expired Correct answer.
  4. The hole was cleaned by brushing and blowing per instructions

Explanation

Installing after gel time has expired means the adhesive can no longer properly wet the rod and hole wall. This is a nonconformance requiring rejection and reinstallation. The other listed conditions reflect correct practice.

Question 26Adhesive Anchor Installation Inspection

Which of the following is the primary purpose of the inspector's pre-installation verification of the adhesive cartridge?

  1. To confirm that the adhesive is within its expiration date and has been stored per the manufacturer's instructions Correct answer.
  2. To verify that the cartridge can be easily opened by hand
  3. To check that the cartridge color matches the color of the anchor rod
  4. To ensure that the cartridge is full by weighing it

Explanation

Adhesive performance depends on using material within its shelf life and stored within the manufacturer's temperature range. Expired or improperly stored adhesive may not cure properly. The inspector must verify these conditions before installation begins.

Question 27Adhesive Anchor Installation Inspection

During hole preparation, the inspector should confirm that the hole is cleaned according to the manufacturer's written instructions because:

  1. Cleaning the hole is required only for overhead installations
  2. Cleaning the hole reduces the amount of adhesive needed
  3. Cleaning the hole makes the drill bit last longer
  4. Proper cleaning removes dust and debris that can prevent the adhesive from bonding to the concrete Correct answer.

Explanation

Dust and debris act as a bond breaker between the adhesive and the concrete, reducing anchor capacity. Manufacturer instructions specify cleaning methods (e.g., brushing and blowing) that must be followed. The inspector verifies that these steps are performed.

Question 28Adhesive Anchor Installation Inspection

The inspector observes that the technician is using a brush that is worn and does not contact the hole walls. What is the most appropriate action?

  1. Allow the installation to proceed since the hole was already brushed once
  2. Instruct the technician to blow the hole with compressed air only
  3. Note the condition in the report but take no other action
  4. Require the technician to use a new brush of the correct diameter and re-clean the hole Correct answer.

Explanation

Brushes must be in good condition and sized to the hole to effectively remove dust from the walls. A worn brush will not clean the hole properly, so the hole must be re-cleaned with a proper brush. Allowing installation to proceed would compromise the anchor.

Question 29Adhesive Anchor Installation Inspection

Which of the following best describes the inspector's responsibility regarding the adhesive mixing process when using a two-component cartridge with a static mixer?

  1. Check that the cartridge is shaken vigorously before use
  2. Confirm that the adhesive is mixed in a separate container
  3. Verify that the correct static mixer is used and that the initial mixed adhesive is discarded until a uniform color is achieved Correct answer.
  4. Ensure that the technician mixes the adhesive with a wooden stick for at least one minute

Explanation

Two-component cartridges require a specific static mixer to ensure proper mixing. The initial extruded material often has an inconsistent mix ratio and must be discarded until a uniform color appears. The inspector verifies these steps.

Question 30Adhesive Anchor Installation Inspection

The inspector notices that the technician is installing an anchor in a hole that was drilled at an angle not specified by the manufacturer. What is the primary concern?

  1. The hole will be easier to clean
  2. The adhesive will cure too quickly
  3. The anchor may not achieve the design load capacity because the angle affects the load distribution and embedment Correct answer.
  4. The anchor will be easier to insert

Explanation

Adhesive anchors are designed for specific installation orientations and embedment depths. Drilling at an unapproved angle can reduce capacity and may not be permitted by the manufacturer. The inspector must ensure compliance with the approved design.

Question 31Adhesive Anchor Installation Inspection

During a proof load test, the inspector should verify that the test load is applied:

  1. Incrementally and held for the specified duration, with the load measured by a calibrated device Correct answer.
  2. Only after the anchor has been in service for at least 30 days
  3. Rapidly to the maximum load to save time
  4. Without measuring the load, relying on visual observation of movement

Explanation

Proof load tests must be performed according to a specified procedure, typically involving incremental loading and a hold period. The load must be measured with a calibrated device to ensure accuracy. The inspector verifies that the procedure is followed.

Question 32Adhesive Anchor Installation Inspection

The inspector observes that the technician is not wearing safety glasses while dispensing adhesive. What is the most appropriate action?

  1. Stop the work and require the technician to wear appropriate personal protective equipment Correct answer.
  2. Ask the technician to stand back while dispensing
  3. Ignore it since adhesive is not hazardous
  4. Continue work but note the violation in the report

Explanation

Adhesive chemicals can cause eye irritation or injury, so safety glasses are required. The inspector has the authority and responsibility to stop work if safety requirements are not met. Personal protective equipment must be used as specified.

Question 33Adhesive Anchor Installation Inspection

Which of the following conditions would most likely require rejection of an adhesive anchor installation?

  1. The adhesive was dispensed at a temperature within the manufacturer's range
  2. The anchor rod is not fully inserted to the required embedment depth Correct answer.
  3. The hole was cleaned with a brush and compressed air
  4. The anchor was loaded after the specified cure time

Explanation

Insufficient embedment depth reduces the anchor's capacity and is a nonconformance. Proper cleaning, correct temperature, and proper cure time are all requirements; meeting them is acceptable. The inspector must reject installations that do not meet embedment requirements.

Question 34Adhesive Anchor Installation Inspection

The inspector should verify that the anchor rod is straight and free of bends because:

  1. Bends can induce eccentric loading and reduce the anchor's tensile capacity Correct answer.
  2. Bends increase the adhesive's cure speed
  3. Straight rods are required for aesthetic reasons
  4. Bent rods are harder to insert

Explanation

Anchor rods are designed to carry loads primarily in tension or shear along their axis. Bends or kinks can cause eccentricity and stress concentrations, reducing capacity. The inspector must ensure rods are straight and undamaged.

Question 35Adhesive Anchor Installation Inspection

When the inspector observes the technician installing an anchor in a hole that is wet, what should the inspector do?

  1. Allow installation because water improves adhesion
  2. Verify that the adhesive is approved for use in wet holes and that the hole is prepared accordingly Correct answer.
  3. Require the technician to dry the hole with a rag only
  4. Reject the installation immediately because adhesive anchors cannot be used in wet holes

Explanation

Some adhesives are formulated for use in wet or damp holes, but they must be specified and installed per the manufacturer's instructions. The inspector must confirm that the product is suitable for the condition. Not all adhesives are approved for wet holes.

Question 36Adhesive Anchor Installation Inspection

The inspector notes that the technician is using an adhesive that has been specified for a different anchor diameter than the one being installed. What is the most appropriate action?

  1. Add more adhesive to compensate
  2. Allow the installation because adhesive is universal
  3. Stop the installation and verify that the correct adhesive is used for the anchor diameter Correct answer.
  4. Continue but reduce the embedment depth

Explanation

Adhesives are qualified for specific anchor diameters and embedment depths; using the wrong adhesive can compromise the anchor's capacity. The inspector must ensure that the adhesive matches the design and manufacturer's requirements. Installation should not proceed until the correct adhesive is used.

Question 37Adhesive Anchor Installation Inspection

Which of the following is a key reason the inspector should verify that the hole diameter is measured with a gauge or caliper?

  1. To determine the amount of adhesive to order
  2. To check the drill bit's sharpness
  3. To confirm the anchor rod length
  4. To ensure the hole is within the tolerance specified for the adhesive anchor Correct answer.

Explanation

The hole diameter must fall within the manufacturer's specified tolerance for the adhesive to perform correctly. Using a gauge or caliper provides an accurate measurement. Visual estimation is not sufficient.

Question 38Adhesive Anchor Installation Inspection

The inspector observes that the technician is not recording the installation parameters (e.g., date, adhesive lot, hole size). Why is this a concern?

  1. It is required only for overhead anchors
  2. It slows down the installation process
  3. Recording is optional and only for the contractor's records
  4. Documentation provides traceability for quality control and future verification Correct answer.

Explanation

Installation records are essential for traceability, quality assurance, and verifying that the anchor was installed correctly. They may be required by the specifications. The inspector should ensure that records are maintained.

Question 39Adhesive Anchor Installation Inspection

Before loading an adhesive anchor, the inspector should confirm that:

  1. The anchor can be moved slightly to check for flexibility
  2. The adhesive has cured for the full duration specified by the manufacturer for the site temperature Correct answer.
  3. The adhesive is still tacky to the touch
  4. The adhesive has cured for at least one hour regardless of temperature

Explanation

Cure time depends on the adhesive formulation and the concrete temperature. The manufacturer provides a cure schedule that must be followed before loading. Loading too early can damage the bond.

Question 40Adhesive Anchor Installation Inspection

The inspector notices that the technician is using a hammer drill in hammer mode to drill a hole in a location where the manufacturer requires rotary-only drilling. What is the consequence?

  1. The drilling will be faster, which is beneficial
  2. The hole may be oversized or damaged, reducing the anchor's capacity Correct answer.
  3. The hole will be cleaner
  4. The adhesive will cure faster

Explanation

Hammer drilling can cause microcracking and enlargement of the hole, which can reduce bond strength. Some adhesives require rotary-only drilling to avoid damage. The inspector must ensure that the correct drilling method is used.

Question 41Adhesive Anchor Installation Inspection

During the inspection of an adhesive anchor installation, the inspector should verify that the adhesive is dispensed:

  1. From the bottom of the hole upward to avoid trapping air Correct answer.
  2. Only after the anchor rod is inserted
  3. From the top of the hole downward to fill evenly
  4. In one rapid motion to save time

Explanation

Dispensing adhesive from the bottom of the hole upward helps prevent air pockets and ensures complete filling. This is a common requirement in manufacturer instructions. The inspector should observe this technique.

Question 42Adhesive Anchor Installation Inspection

The inspector observes that the technician is inserting the anchor rod with a twisting motion. Why is this important?

  1. Twisting increases the cure speed
  2. Twisting helps distribute the adhesive evenly and remove air pockets Correct answer.
  3. Twisting is required to activate the adhesive
  4. Twisting is only needed for overhead anchors

Explanation

A slow twisting motion during insertion helps coat the rod and hole with adhesive and minimizes voids. This is often specified by the manufacturer. The inspector should verify that the rod is inserted with a twisting action.

Question 43Adhesive Anchor Installation Inspection

Which of the following best describes the inspector's role when a deviation from the installation instructions is observed?

  1. Allow the contractor to decide whether to correct it
  2. Ignore minor deviations to avoid delays
  3. Report the deviation only if it affects the schedule
  4. Document the deviation and require corrective action before acceptance Correct answer.

Explanation

The inspector must ensure that installations comply with the approved instructions. Deviations should be documented and corrected. Acceptance should not be granted until the issue is resolved.

Question 44Adhesive Anchor Installation Inspection

The inspector should verify that the anchor rod is cleaned before insertion because:

  1. Oil, dirt, or scale can prevent the adhesive from bonding to the rod Correct answer.
  2. Clean rods are required for aesthetic reasons
  3. Clean rods cure faster
  4. Clean rods are easier to insert

Explanation

Contaminants on the rod can act as a bond breaker, reducing the anchor's capacity. The manufacturer typically requires rods to be clean and free of oil, dirt, or scale. The inspector should confirm that the rods are clean.

Question 45Adhesive Anchor Installation Inspection

During a field test, the inspector observes that the anchor moves when the proof load is applied. What is the appropriate action?

  1. Record the movement and accept the anchor if it holds
  2. Reduce the load and continue
  3. Stop the test and reject the anchor, then investigate the cause Correct answer.
  4. Continue the test to the maximum load

Explanation

Significant movement under proof load indicates that the anchor may not have achieved adequate capacity. The test should be stopped, and the anchor should be rejected and investigated. Continuing the test could be unsafe.

Question 46Adhesive Anchor Installation Inspection

The inspector notes that the technician is installing an anchor near a free edge with a distance less than the manufacturer's minimum edge distance. What is the primary risk?

  1. The anchor will be easier to install
  2. The hole will be too deep
  3. The concrete may crack or the anchor may not achieve its design capacity Correct answer.
  4. The adhesive will not cure

Explanation

Minimum edge distance is specified to prevent concrete breakout or splitting. Installing too close to an edge can reduce capacity and lead to failure. The inspector must ensure that edge distances meet the manufacturer's requirements.

Question 47Adhesive Anchor Installation Inspection

Which of the following is a critical item the inspector should check before the adhesive is dispensed into the hole?

  1. That the adhesive cartridge is full
  2. That the concrete is at least 28 days old
  3. That the anchor rod is painted
  4. That the hole is clean and the adhesive is within its working time Correct answer.

Explanation

The hole must be properly cleaned and the adhesive must be used within its working time (gel time) to ensure proper bonding. These are critical pre-dispensing checks. Other factors like concrete age may be relevant but are not the immediate check.

Question 48Adhesive Anchor Installation Inspection

The inspector observes that the technician is using a static mixer that is too short for the cartridge. What is the likely consequence?

  1. The adhesive may not be properly mixed, leading to incomplete curing Correct answer.
  2. The cartridge will leak
  3. The adhesive will cure too quickly
  4. The anchor will be easier to insert

Explanation

The static mixer must have the correct number of elements to ensure thorough mixing. A mixer that is too short may not blend the two components adequately. This can result in poor curing and reduced strength.

Question 49Adhesive Anchor Installation Inspection

The inspector should verify that the anchor rod is inserted to the required depth by:

  1. Counting the number of hammer blows
  2. Measuring the exposed length of the rod
  3. Observing the amount of adhesive that squeezes out
  4. Checking that the embedment mark on the rod aligns with the concrete surface Correct answer.

Explanation

The embedment depth is typically marked on the rod or drill bit. The inspector verifies that the mark aligns with the concrete surface after insertion. This confirms that the rod is fully inserted.

Question 50Adhesive Anchor Installation Inspection

When the inspector observes that the technician is installing an anchor in a hole that was drilled deeper than specified, what is the appropriate action?

  1. Reduce the amount of adhesive used
  2. Ignore the depth as long as the rod is embedded
  3. Allow installation because deeper is always better
  4. Require the hole to be backfilled with adhesive or use a deeper anchor as approved Correct answer.

Explanation

Excessive hole depth may not be permitted by the manufacturer; it can affect adhesive volume and anchor performance. The inspector should require corrective action, such as using a deeper anchor or filling the hole per instructions. Simply allowing it or reducing adhesive is not acceptable.