H8 - Perform Renovations and Additions - LT #3

Question 1

What is the Advantage of using Steel beams?

Answer 1

1) Less depth than wood and spans much further

Question 2

What are the advantages of using engineered beams for renvoation work?

Answer 2

Engineered beam span farther than sawn nail laminated lumber, beam, can be designed to support point loads.

Question 3

By replacing a load-bearing wall with a beam, the uniform load is changed to what kind of loads?

Answer 3

Concentrated (Point) Loads)

Question 4

Why must a building’s structure be understood before renovations start?

Answer 4

To determine how existing loads are transferred to the foundations. (Determine where load-bearing walls and point loads are located)

Question 5

Why must any new loads be transferred down to the foundation?

Answer 5

So that no part of existing structure becomes overloaded, leading to FAILURE.

Question 6

What types of posts work well for temporary support?

Answer 6

1) Shore posts.
2) Teleposts
3) Wood posts with screw jacks.

Question 7

What should be done before cutting into a wall?

Answer 7

Remove some cladding to inspect for wires and pipes.

Question 8

What type of renovation typically uses scaffolding for temp. support?

Answer 8

Large Commercial and Industrial Projects.

Question 9

Besides checking the load-bearing rating for a shore post or telepost, what should also be done before using the post?

Answer 9

Visual inspection for Cracks, Broken welds, or other damage.

Question 10

Instead of removing temporary supports with brute force (Sledge hammer), what method should be used?

Answer 10

Gently with hydraulic or screw jacks.

Question 11

What should be avoided when installing finishes?

Answer 11

Having continuous finishes across the joints between the new and existing structures.

Question 12

What are the main purposes of renovations?

Answer 12

Main reasons for renovation:

Add floor area, accommodate disability, or modernize a building.

Question 13

When is a Built-Up wood Beam best used?

Answer 13

When is a Built-Up wood Beam best used?

IF new beam or lintel does not bear a point load, and if space permits then a built-up wood beam of framing lumber may be enough and usually cost efficient.

Question 14

Why are Engineered Beam (LVL) usefull?

Answer 14

Can span further than a beam made from sawn lumber, often can be designed with shallow depth to increase headroom.

Question 15

Engineered beams are good when there is a point load, why?

Answer 15

Engineered beams are good when there is a point load, why?

Can be certified by the manuf. to support the load.

Question 16

When an existing beam needs additional strength, instead of replacing the entire beam, sometimes a single ply of Eng. beam can be:

Answer 16

When an existing beam needs additional strength, instead of replacing the entire beam, sometimes a single ply of Eng. beam can be:

Bolted to side of existing beam

Question 17

Problem with Steel beams:

Answer 17

Weight and extra work required to make wood to steel connections.

Question 18

When an existing beam needs to be strengthened, how can it be strengthened?

Answer 18

sheet of 19 mm plywood glued and nailed to one or both sides or a steel plate can be bolted to one or both sides.

Question 19

When removing all or part of interior load-bearing wall, it is critical to learn if joists are:

Answer 19

Continuous, lapped or butted on the wall.

Question 20

If continuous or lapped enough to overhang the wall:

Answer 20

temporary support is only needed on the lapped sides. If butted, support will be needed on both sides.

Question 21

When removing a wall, beam, lintel or post, what is needed?

Answer 21

Some temp. support.

Question 22

Beams supported on posts can be used as temp. support, how?

Answer 22

Continuous sill or pad needed under post, unless verified to have enough bearing, because load becomes concentrated.

Question 23

Scaffolding used in falsework can be used to support:

Answer 23

Large areas of floor, ceiling and roof, this type of temporary support is mainly used for large commercial and industrial jobs.

Question 24

Advantages of teleposts:

Answer 24

As wood beams shrink, the telepost can be adjusted to compensate.

Question 25

Teleposts are rated to support:

Answer 25

8000 LB and Concrete Shore posts rated for 14,000 LB

Question 26

Quick and easy fix for repairing a rotting post:

Answer 26

Use a shore post or telepost makes this type of job relatively quick, simple and safe.

Question 27

Adding new foundation alongside an existing foundation:

Answer 27

Concrete-To-Concrete connection should allow for some settling of new foundation

Question 28

New foundation to existing foundation connection made:

Answer 28

To allow independent movement or lock the two foundations together by dowelling.

Method chosen by loading on the new concrete and the type of soil under concrete.

Question 29

Where settlement is expected and/or probable, a space is created using:

Answer 29

Styrofoam or cardboard just above the existing footing to absorb any potential movement.

Question 30

Joint between new and existing foundation wall needs to be:

Answer 30

Joint between new and existing foundation wall needs to be:

Sealed against water seepage. Using special gasket material, or using a membrane on the outside of wall.

Question 31

Primary concerns when connecting existing framing to new framing?

Answer 31

Shrinkage and foundation settlement.

Shrinkage can be minimized by using Engineered beams and joists.

Question 32

When using a steel beam to provide permanent support for joists:

Answer 32

Building Code calls for the beam to be laterally supported.