Conventional Roof Framing Class Exercise 1 - 30 0 Residential Studies Certificate IV 2182D.

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Presentation transcript:

Conventional Roof Framing Class Exercise Residential Studies Certificate IV 2182D

Using the Floor Plan & Details provided complete the Preliminary Calculations so that the most economical Size, Span and Spacing Of the Ceiling and Roof members can be achieved.

Note: Hyspan LVL Strutting Beams to Living/Family & Living/Dining rooms as shown Floor Plan Class Exercise 1

Preliminary Calculations Common Rafter True Length of Common RafterPitch Half Span Rise Half Span = – = 3.635m Rise = 30 Tan x = 2.099m TLCR = TLCR = cos = 4.197m

Calculate Common Rafter Span - RLW RLW = = 2.098m RLW = 2.098m Say 2.100m

Calculate Eaves Overhang – Eaves RLW TL O/Hang = COS 30 = 0.693m 0.693m RLW Eaves = 0.693m

Calculate Fan Struts Strut = 2.1 Strut = Tan30 x = Strut

Calculate Fan Strut Length Fan Strut =  = 1.713m or = cos 45 = 1.713m Half Spread Fan Strut = 1.211m Fan Strut Length = 1.713m

Calculate Distance X Distance X is the distance From the inside of the plate to the centre of the underpurlin. The Formula is Run of rafter divided by 2 minus the width of the wall plate Run of rafter = / 2 = – 90 = 1728

Summary: Rafter Span = Say RLW Underpurlin = 2.1 Eaves Overhang = Distance X = Half spread of the fan strut = Full spread of the fan strut = Length of strut = 1.713

Using the information from the Preliminary Calculations & The Job Specification Fill in the Project job sheets to arrive at final design requirements.

MemberRule/TableSizeComments Timber Species Timber Grade Supp. No. Roof Mass Type/Construct. Floor to Ceiling height Eaves Width Fill in comments column with information from project specification General Information from Project Details

MemberRule/TableSizeComments Timber Species Timber Grade Supp. No. Roof Mass Type/Construct. Floor to Ceiling height Eaves Width Seasoned S/Wood Fill in comments column with information from project specification General Information from Project Details

MemberRule/TableSizeComments Timber Species Timber Grade Supp. No. Roof Mass Type/Construct. Floor to Ceiling height Eaves Width Seasoned S/Wood Fill in comments column with information from project specification MGP 15 General Information from Project Details

MemberRule/TableSizeComments Timber Species Timber Grade Supp. No. Roof Mass Type/Construct. Floor to Ceiling height Eaves Width Seasoned S/Wood Fill in comments column with information from project specification MGP 15 6 – N3 General Information from Project Details

MemberRule/TableSizeComments Timber Species Timber Grade Supp. No. Roof Mass Type/Construct. Floor to Ceiling height Eaves Width Seasoned S/Wood Fill in comments column with information from project specification MGP 15 6 – N3 10Kg/m 2 General Information from Project Details

MemberRule/TableSizeComments Timber Species Timber Grade Supp. No. Roof Mass Type/Construct. Floor to Ceiling height Eaves Width Seasoned S/Wood Fill in comments column with information from project specification MGP 15 6 – N3 10Kg/m 2 Conventional General Information from Project Details

MemberRule/TableSizeComments Timber Species Timber Grade Supp. No. Roof Mass Type/Construct. Floor to Ceiling height Eaves Width Seasoned S/Wood Fill in comments column with information from project specification MGP 15 6 – N3 10Kg/m 2 Conventional General Information from Project Details

MemberRule/TableSizeComments Timber Species Timber Grade Supp. No. Roof Mass Type/Construct. Floor to Ceiling height Eaves Width Seasoned S/Wood Fill in comments column with information from project specification MGP 15 6 – N3 10Kg/m 2 Conventional General Information from Project Details

Using A.S (2006) – Section 7 Roof Framing 1. Obtain information for Ceiling Joists to complete job sheet. MemberRule/TableSizeComments Ceiling Joists RTRRTR 90 x 35 Single Span Continuous Span (over more than 1 span) 1.Page 81 – rule ceiling joists(building practice) Page 98 – rule ceiling joists (member sizes) Determine Span Table of supplements(supp. 6, N3, s/softwood, MGP 15)

Using A.S (2006) – Section 7 Roof Framing 1. Obtain information for Ceiling Joists to complete job sheet. MemberRule/TableSizeComments Ceiling Joists RTRRTR 90 x c/c Single Span Continuous Span (over more than 1 span) 1.Page 81 – rule ceiling joists(building practice) Page 98 – rule ceiling joists (member sizes) Determine Span Table of supplements(supp. 6, N3, s/softwood, MGP 15) Find allowable spans for 90 x 35 MGP15 ceiling joists from table 21 supp. 6

Using A.S (2006) – Section 7 Roof Framing 1. Obtain information for Ceiling Joists to complete job sheet. MemberRule/TableSizeComments Ceiling Joists RTRRTR 90 x c/c Single Span Continuous Span (over more than 1 span) 1.Page 81 – rule ceiling joists(building practice) Page 98 – rule ceiling joists (member sizes) Determine Span Table of supplements(supp. 6, N3, s/softwood, MGP 15) Find allowable spans for 90 x 35 MGP15 ceiling joists from table 21 supp

Using A.S (2006) – Section 7 Roof Framing 1. Obtain information for Ceiling Joists to complete job sheet. MemberRule/TableSizeComments Ceiling Joists RTRRTR 90 x c/c Single Span Continuous Span (over more than 1 span) 1.Page 81 – rule ceiling joists(building practice) Page 98 – rule ceiling joists (member sizes) Determine Span Table of supplements(supp. 6, N3, s/softwood, MGP 15) Find allowable spans for 90 x 35 MGP15 ceiling joists from table 21 supp

2. Obtain information for Hanging Beams MemberRule/TableSizeComments Room Span CLW Hanging Beams RTRRTR Bedroom 1 Bedroom 2 Bedroom 3 Bath / WC Laundry Kitchen Dining Family Living Entry 1.Page 82 – rule Hanging Beams(building practice) Page 99 – rule Hanging Beams (member sizes) Determine Span Table of supplements(supp. 6, N3, s/softwood, MGP 15)

2. Obtain information for Hanging Beams MemberRule/TableSizeComments Room Span CLW Hanging Beams RTRRTR Bedroom 1 Bedroom 2 Bedroom 3 Bath / WC Laundry Kitchen Dining Family Living Entry 1.Page 82 – rule Hanging Beams(building practice) Page 99 – rule Hanging Beams (member sizes) Determine Span Table of supplements(supp. 6, N3, s/softwood, MGP 15) Determine Hanging Beams to rooms from table 23 supp. 6, MGP15

2. Obtain information for Hanging Beams MemberRule/TableSizeComments Room Span CLW Hanging Beams RTRRTR Bedroom 1 Bedroom 2 Bedroom 3 Bath / WC Laundry Kitchen Dining Family Living Entry 1.Page 82 – rule Hanging Beams(building practice) Page 99 – rule Hanging Beams (member sizes) Determine Span Table of supplements(supp. 6, N3, s/softwood, MGP 15) Determine Hanging Beams to rooms from table 23 supp. 6, MGP

2. Obtain information for Hanging Beams MemberRule/TableSizeComments Room Span CLW Hanging Beams RTRRTR 140 x 35 Bedroom 1 Bedroom 2 Bedroom 3 Bath / WC Laundry Kitchen Dining Family Living Entry 1.Page 82 – rule Hanging Beams(building practice) Page 99 – rule Hanging Beams (member sizes) Determine Span Table of supplements(supp. 6, N3, s/softwood, MGP 15) Determine Hanging Beams to rooms from table 23 supp. 6, MGP

2. Obtain information for Hanging Beams MemberRule/TableSizeComments Room Span CLW Hanging Beams RTRRTR 140 x 35 Bedroom 1 Bedroom Bedroom 3 Bath / WC Laundry Kitchen Dining Family Living Entry 1.Page 82 – rule Hanging Beams(building practice) Page 99 – rule Hanging Beams (member sizes) Determine Span Table of supplements(supp. 6, N3, s/softwood, MGP 15) Determine Hanging Beams to rooms from table 23 supp. 6, MGP

2. Obtain information for Hanging Beams MemberRule/TableSizeComments Room Span CLW Hanging Beams RTRRTR 140 x 35 Bedroom 1 Bedroom Bedroom 3 Bath / WC Laundry Kitchen Dining Family Living Entry 1.Page 82 – rule Hanging Beams(building practice) Page 99 – rule Hanging Beams (member sizes) Determine Span Table of supplements(supp. 6, N3, s/softwood, MGP 15) Determine Hanging Beams to rooms from table 23 supp. 6, MGP

2. Obtain information for Hanging Beams MemberRule/TableSizeComments Room Span CLW Hanging Beams RTRRTR 140 x 35 Bedroom 1 Bedroom Bedroom Bath / WC Laundry Kitchen Dining Family Living Entry 1.Page 82 – rule Hanging Beams(building practice) Page 99 – rule Hanging Beams (member sizes) Determine Span Table of supplements(supp. 6, N3, s/softwood, MGP 15) Determine Hanging Beams to rooms from table 23 supp. 6, MGP

2. Obtain information for Hanging Beams MemberRule/TableSizeComments Room Span CLW Hanging Beams RTRRTR 140 x x 35 Bedroom 1 Bedroom Bedroom Bath / WC Laundry Kitchen Dining Family Living Entry 1.Page 82 – rule Hanging Beams(building practice) Page 99 – rule Hanging Beams (member sizes) Determine Span Table of supplements(supp. 6, N3, s/softwood, MGP 15) Determine Hanging Beams to rooms from table 23 supp. 6, MGP

2. Obtain information for Hanging Beams MemberRule/TableSizeComments Room Span CLW Hanging Beams RTRRTR 140 x x 35 ________ Bedroom 1 Bedroom Bedroom Bath / WC NA Laundry Kitchen Dining Family Living Entry 1.Page 82 – rule Hanging Beams(building practice) Page 99 – rule Hanging Beams (member sizes) Determine Span Table of supplements(supp. 6, N3, s/softwood, MGP 15) Determine Hanging Beams to rooms from table 23 supp. 6, MGP

2. Obtain information for Hanging Beams MemberRule/TableSizeComments Room Span CLW Hanging Beams RTRRTR 140 x x 35 ________ Bedroom 1 Bedroom Bedroom Bath / WC NA Laundry NA Kitchen Dining Family Living Entry 1.Page 82 – rule Hanging Beams(building practice) Page 99 – rule Hanging Beams (member sizes) Determine Span Table of supplements(supp. 6, N3, s/softwood, MGP 15) Determine Hanging Beams to rooms from table 23 supp. 6, MGP

2. Obtain information for Hanging Beams MemberRule/TableSizeComments Room Span CLW Hanging Beams RTRRTR 140 x x 35 ________ Bedroom 1 Bedroom Bedroom Bath / WC NA Laundry NA Kitchen Dining Family Living Entry 1.Page 82 – rule Hanging Beams(building practice) Page 99 – rule Hanging Beams (member sizes) Determine Span Table of supplements(supp. 6, N3, s/softwood, MGP 15) Determine Hanging Beams to rooms from table 23 supp. 6, MGP

2. Obtain information for Hanging Beams MemberRule/TableSizeComments Room Span CLW Hanging Beams RTRRTR 140 x x 35 ________ 140 x 35 Bedroom 1 Bedroom Bedroom Bath / WC NA Laundry NA Kitchen Dining Family Living Entry 1.Page 82 – rule Hanging Beams(building practice) Page 99 – rule Hanging Beams (member sizes) Determine Span Table of supplements(supp. 6, N3, s/softwood, MGP 15) Determine Hanging Beams to rooms from table 23 supp. 6, MGP

2. Obtain information for Hanging Beams MemberRule/TableSizeComments Room Span CLW Hanging Beams RTRRTR 140 x x 35 ________ 140 x 35 Bedroom 1 Bedroom Bedroom Bath / WC NA Laundry NA Kitchen Dining Family Living Entry 1.Page 82 – rule Hanging Beams(building practice) Page 99 – rule Hanging Beams (member sizes) Determine Span Table of supplements(supp. 6, N3, s/softwood, MGP 15) Determine Hanging Beams to rooms from table 23 supp. 6, MGP

2. Obtain information for Hanging Beams MemberRule/TableSizeComments Room Span CLW Hanging Beams RTRRTR 140 x x 35 ________ 140 x 35 Bedroom 1 Bedroom Bedroom Bath / WC NA Laundry NA Kitchen Dining Family Living Entry 1.Page 82 – rule Hanging Beams(building practice) Page 99 – rule Hanging Beams (member sizes) Determine Span Table of supplements(supp. 6, N3, s/softwood, MGP 15) Determine Hanging Beams to rooms from table 23 supp. 6, MGP

2. Obtain information for Hanging Beams MemberRule/TableSizeComments Room Span CLW Hanging Beams RTRRTR 140 x x 35 ________ 140 x 35 Bedroom 1 Bedroom Bedroom Bath / WC NA Laundry NA Kitchen Dining Family Living Entry 1.Page 82 – rule Hanging Beams(building practice) Page 99 – rule Hanging Beams (member sizes) Determine Span Table of supplements(supp. 6, N3, s/softwood, MGP 15) Determine Hanging Beams to rooms from table 23 supp. 6, MGP

2. Obtain information for Hanging Beams MemberRule/TableSizeComments Room Span CLW Hanging Beams RTRRTR 140 x x 35 ________ 140 x x 35 Bedroom 1 Bedroom Bedroom Bath / WC NA Laundry NA Kitchen Dining Family Living Entry 1.Page 82 – rule Hanging Beams(building practice) Page 99 – rule Hanging Beams (member sizes) Determine Span Table of supplements(supp. 6, N3, s/softwood, MGP 15) Determine Hanging Beams to rooms from table 23 supp. 6, MGP

2. Obtain information for Hanging Beams MemberRule/TableSizeComments Room Span CLW Hanging Beams RTRRTR 140 x x 35 ________ 140 x x 35 Bedroom 1 Bedroom Bedroom Bath / WC NA Laundry NA Kitchen Dining Family Living Entry 1.Page 82 – rule Hanging Beams(building practice) Page 99 – rule Hanging Beams (member sizes) Determine Span Table of supplements(supp. 6, N3, s/softwood, MGP 15) Determine Hanging Beams to rooms from table 23 supp. 6, MGP

2. Obtain information for Hanging Beams MemberRule/TableSizeComments Room Span CLW Hanging Beams RTRRTR 140 x x 35 ________ 140 x x x 35 Bedroom 1 Bedroom Bedroom Bath / WC NA Laundry NA Kitchen Dining Family Living Entry 1.Page 82 – rule Hanging Beams(building practice) Page 99 – rule Hanging Beams (member sizes) Determine Span Table of supplements(supp. 6, N3, s/softwood, MGP 15) Determine Hanging Beams to rooms from table 23 supp. 6, MGP

2. Obtain information for Hanging Beams MemberRule/TableSizeComments Room Span CLW Hanging Beams RTRRTR 140 x x 35 ________ 140 x x x 35 ________ Bedroom 1 Bedroom Bedroom Bath / WC NA Laundry NA Kitchen Dining Family Living Entry NA 1.Page 82 – rule Hanging Beams(building practice) Page 99 – rule Hanging Beams (member sizes) Determine Span Table of supplements(supp. 6, N3, s/softwood, MGP 15) Determine Hanging Beams to rooms from table 23 supp. 6, MGP

3. Obtain information for Rafters MemberRule/TableSizeComments Common Rafter RTRRTR Rafter Spacing RLW Eaves O/Hang Underpurlin is mid-span of Rafter Fill in comments column with information from project specification & Prelim. Calcs. 1.Page 86 – rule Rafters(building practice) Page 105 – rule Rafters (member sizes) Determine Span Table of supplements(supp. 6, N3, s/softwood, MGP 15)

3. Obtain information for Rafters MemberRule/TableSizeComments Common Rafter RTRRTR Rafter Spacing RLW Eaves O/Hang Underpurlin is mid-span of Rafter Fill in comments column with information from project specification & Prelim. Calcs. 1.Page 86 – rule Rafters(building practice) Page 105 – rule Rafters (member sizes) Determine Span Table of supplements(supp. 6, N3, s/softwood, MGP 15) 29 4.Determine Rafter Size from table 29 supp. 6, MGP15, N3 (Check - single or continuous span - roof mass – span – O/hang)

3. Obtain information for Rafters MemberRule/TableSizeComments Common Rafter RTRRTR Rafter Spacing RLW Eaves O/Hang Underpurlin is mid-span of Rafter Fill in comments column with information from project specification & Prelim. Calcs Page 86 – rule Rafters(building practice) Page 105 – rule Rafters (member sizes) Determine Span Table of supplements(supp. 6, N3, s/softwood, MGP 15) 29 4.Determine Rafter Size from table 29 supp. 6, MGP15, N3 (Check - single or continuous span - roof mass – span – O/hang)

3. Obtain information for Rafters MemberRule/TableSizeComments Common Rafter RTRRTR Rafter Spacing RLW Eaves O/Hang Underpurlin is mid-span of Rafter Fill in comments column with information from project specification & Prelim. Calcs Page 86 – rule Rafters(building practice) Page 105 – rule Rafters (member sizes) Determine Span Table of supplements(supp. 6, N3, s/softwood, MGP 15) 29 4.Determine Rafter Size from table 29 supp. 6, MGP15, N3 (Check - single or continuous span - roof mass – span – O/hang)

3. Obtain information for Rafters MemberRule/TableSizeComments Common Rafter RTRRTR Rafter Spacing RLW Eaves O/Hang Underpurlin is mid-span of Rafter Fill in comments column with information from project specification & Prelim. Calcs Page 86 – rule Rafters(building practice) Page 105 – rule Rafters (member sizes) Determine Span Table of supplements(supp. 6, N3, s/softwood, MGP 15) 29 4.Determine Rafter Size from table 29 supp. 6, MGP15, N3 (Check - single or continuous span - roof mass – span – O/hang)

3. Obtain information for Rafters MemberRule/TableSizeComments Common Rafter RTRRTR Rafter Spacing RLW Eaves O/Hang Underpurlin is mid-span of Rafter Fill in comments column with information from project specification & Prelim. Calcs Page 86 – rule Rafters(building practice) Page 105 – rule Rafters (member sizes) Determine Span Table of supplements(supp. 6, N3, s/softwood, MGP 15) 29 4.Determine Rafter Size from table 29 supp. 6, MGP15, N3 (Check - single or continuous span - roof mass – span – O/hang) 140 x 45

4. Obtain information for Collar Ties MemberRule/TableSizeComments Collar Ties RTRT or Length Check section 7 (Roof Framing) for information – rules & tables for Collar Ties Note:Find rules relating to Collar Ties. Page 90 Rule & Page 109, Rule – Other members or Components, states that Table 7.6 give details for miscellaneous roof framing members not given in span tables of the supplements &

4. Obtain information for Collar Ties MemberRule/TableSizeComments Collar Ties RTRT or Length Check section 7 (Roof Framing) for information – rules & tables for Collar Ties Note:Find rules relating to Collar Ties. Page 90 Rule & Page 109, Rule – Other members or Components, states that Table 7.6 give details for miscellaneous roof framing members not given in span tables of the supplements & Page 110, Table 7.6 – Collar Ties gives required Information 7.6 (page 110)

4. Obtain information for Collar Ties MemberRule/TableSizeComments Collar Ties RTRT or Length Check section 7 (Roof Framing) for information – rules & tables for Collar Ties Note:Find rules relating to Collar Ties. Page 90 Rule & Page 109, Rule – Other members or Components, states that Table 7.6 give details for miscellaneous roof framing members not given in span tables of the supplements & Page 110, Table 7.6 – Collar Ties gives required Information 7.6 (page 110) Refer to floor plan to calculate length of collar tie: / 2 =

4. Obtain information for Collar Ties MemberRule/TableSizeComments Collar Ties RTRT 70 x 35 Length Check section 7 (Roof Framing) for information – rules & tables for Collar Ties Note:Find rules relating to Collar Ties. Page 90 Rule & Page 109, Rule – Other members or Components, states that Table 7.6 give details for miscellaneous roof framing members not given in span tables of the supplements & Page 110, Table 7.6 – Collar Ties gives required Information 7.6 (page 110) Refer to floor plan to calculate length of collar tie: / 2 =

5. Obtain information for Ridge board MemberRule/TableSizeComments Ridge RTRT Not Strutted Check section 7 (Roof Framing) for information – rules & tables for Ridge boards Note:Find rules relating to Ridge boards

5. Obtain information for Ridge board MemberRule/TableSizeComments Ridge RTRT Not Strutted Check section 7 (Roof Framing) for information – rules & tables for Ridge boards Note:Find rules relating to Ridge boards Page 86, Rule – The size of Ridge boards shall be determined from Table (page 110) Table 7.6 Ridge boards – Refers to Unstrutted ridges in coupled roofs has having a depth not less than length of Rafter Plumb-Cut x 19mm thick

Rafter 140 x 45 MGP 15 Seasoned Softwood Ridge Length of Plumb Cut Length of Plumb cut = Rafter Depth Cos. Roof Pitch = Cos = Refer Table 7.6 (AS ) page 110, Ridge depth = rafter plumb cut x 19mm thick. Therefore use 170 x 19 MGP 15 S/wood.

5. Obtain information for Ridge board MemberRule/TableSizeComments Ridge RTRT Not Strutted Check section 7 (Roof Framing) for information – rules & tables for Ridge boards Note:Find rules relating to Ridge boards Page 86, Rule – The size of Ridge boards shall be determined from Table (page 110) Table 7.6 Ridge boards – Refers to Unstrutted ridges in coupled roofs has having a depth not less than length of Rafter Plumb-Cut x 19mm thick Calculate Rafter Plumb-Cut Length = 0.162(Therefore 170 x 19 Ridge) cos x 19

6. Obtain information for Hip Rafter (Hip) MemberRule/TableSizeComments Hip Rafter RRTRRT Check section 7 (Roof Framing) for information – rules & tables for Hip Rafters Note:Find rules relating to Hip rafters Page 87, Rule – Hip & Valley Rafters )

6. Obtain information for Hip Rafter (Hip) MemberRule/TableSizeComments Hip Rafter RRTRRT Check section 7 (Roof Framing) for information – rules & tables for Hip Rafters Note:Find rules relating to Hip rafters Page 87, Rule – Hip & Valley Rafters Page 109, Rule The size of Miscellaneous roof members shall be determined from Table (Page 110) Table states that hips should be 50mm greater In depth than rafters x 19 thick (seasoned) for stress grades F11/ MGP15 min. No less than rafter stress grade.

6. Obtain information for Hip Rafter (Hip) MemberRule/TableSizeComments Hip Rafter RRTRRT Check section 7 (Roof Framing) for information – rules & tables for Hip Rafters Note:Find rules relating to Hip rafters Page 87, Rule – Hip & Valley Rafters Page 109, Rule The size of Miscellaneous roof members shall be determined from Table (Page 110) Table states that hips should be 50mm greater In depth than rafters x 19 thick (seasoned) for stress grades F11/ MGP15 min. No less than rafter stress grade. Use 190 x 19 Hip Rafters ( = 190) 190 x 19

7. Obtain information for Under purlins MemberRule/TableSizeComments Underpurlin RRTRRT 140 x 70 Span Direct from Span Tables of Supplements. Max. Span = Check section 7 (Roof Framing) for information – rules & tables for Underpurlins Note:Find rules relating to Underpurlins Page 84, Rule – Underpurlins

7. Obtain information for Under purlins MemberRule/TableSizeComments Underpurlin RRTRRT 140 x 70 Span Direct from Span Tables of Supplements. Max. Span = Check section 7 (Roof Framing) for information – rules & tables for Underpurlins Note:Find rules relating to Underpurlins Page 84, Rule – Underpurlins Page 104, Rule Size of Underpurlins Span Table 28 of Supplements Refer Table 28 – Continuous Span - for allowable span to Underpurlin (Rafter spacing = 1200, RLW = 2100 & Roof Mass = 10Kg/m 2 ) Determine allowable Max. Span for Underpurlin size 140 x 70 from Table 28

We must interpolate between a RLW of 1800 & 2700 Continuous Span ? 4600

We must interpolate between a RLW of 1800 & ? /900 = x/1000

We must interpolate between a RLW of 1800 & ? /900 = x/600 X = 333 ? = 4567

7. Obtain information for Under purlins MemberRule/TableSizeComments Underpurlin RRTRRT 140 x 70 Span Direct from Span Tables of Supplements. Max. Span = Check section 7 (Roof Framing) for information – rules & tables for Underpurlins Note:Find rules relating to Underpurlins Page 84, Rule – Underpurlins Page 104, Rule Size of Underpurlins Span Table 28 of Supplements Refer Table 28 – Continuous Span - for allowable span to Underpurlin (Rafter spacing = 1200, RLW = 2100 & Roof Mass = 10Kg/m 2 ) Determine allowable Max. Span for Underpurlin size 140 x 70 from Table m

8. Obtain information for Struts (Roof Strutting) MemberRule/TableSizeComments Struts RRTRRT or Straight Strut Length = Fan Strut Length = Check section 7 (Roof Framing) for information – rules & tables for Struts Note:Find rules relating to Struts Page 87, Rule – Roof Strutting & Page 90, Rule Fan Struts From Prelim. Calcs. Fill in lengths for straight & fan struts.

8. Obtain information for Struts (Roof Strutting) MemberRule/TableSizeComments Struts RRTRRT or Straight Strut Length = Fan Strut Length = Check section 7 (Roof Framing) for information – rules & tables for Struts Note:Find rules relating to Struts Page 87, Rule – Roof Strutting & Page 90, Rule Fan Struts. Page 109, Rule The size of Miscellaneous roof members shall be determined from Table From Prelim. Calcs. Fill in lengths for straight & fan struts. Using Table 7.6 Determine section size of Struts – (Sheet Roof)

8. Obtain information for Struts (Roof Strutting) MemberRule/TableSizeComments Struts RRTRRT or Straight Strut Length = Fan Strut Length = Check section 7 (Roof Framing) for information – rules & tables for Struts Note:Find rules relating to Struts Page 87, Rule – Roof Strutting & Page 90, Rule Fan Struts. Page 109, Rule The size of Miscellaneous roof members shall be determined from Table From Prelim. Calcs. Fill in lengths for straight & fan struts m 1.713m Using Table 7.6 Determine section size of Struts – (Sheet Roof)

8. Obtain information for Struts (Roof Strutting) MemberRule/TableSizeComments Struts RRTRRT Straight Strut Length = Fan Strut Length = Check section 7 (Roof Framing) for information – rules & tables for Struts Note:Find rules relating to Struts Page 87, Rule – Roof Strutting & Page 90, Rule Fan Struts. Page 109, Rule The size of Miscellaneous roof members shall be determined from Table From Prelim. Calcs. Fill in lengths for straight & fan struts m 1.713m Using Table 7.6 Determine section size of Struts – (Sheet Roof) 90 x 45 2/90x45

9. Obtain information for Strutting Beams MemberRule/TableSizeComments Strutting Beams Supporting roof & Ceiling Loads. Use: Hyspan LVL Location Span Spacing Living/Dining Living/Family Use Hyspan LVL Span Tables for Residential Building Calculate spans for strutting beams from floor plan

Beam to Living/Dining span = Beam to Living/Family span = Floor Plan Class Exercise 1

8. Obtain information for Strutting Beams MemberRule/TableSizeComments Strutting Beams Supporting roof & Ceiling Loads. Use: Hyspan LVL Location Span Spacing Living/Dining Living/Family Use Hyspan LVL Span Tables for Residential Building Calculate spans for strutting beams from floor plan Fill in span information Spacing as per plan Centre Off Centre / Determine table numbers from Hyspan LVL tables to select beam section sizes

Use table 17 for Beam To Living/Dining - Span = Supporting Underpurlins & Ceiling Joists Go to Table 17 for member size

RLW = Span = Beam Size = 170 x 63

8. Obtain information for Strutting Beams MemberRule/TableSizeComments Strutting Beams Supporting roof & Ceiling Loads. Use: Hyspan LVL Location Span Spacing Living/Dining Living/Family Use Hyspan LVL Span Tables for Residential Building Calculate spans for strutting beams from floor plan Fill in span information Spacing is centre of rooms Centre Off Centre / Determine table numbers from Hyspan LVL tables to select beam section sizes Fill in Data for Living/Dining Beam T x 63

Use table 18 for Beam To Living/Family - Span = Supporting Underpurlins & Hanging Beams Go to Table 18 for member size

RLW = Span = Beam Size = 2/170x36

8. Obtain information for Strutting Beams MemberRule/TableSizeComments Strutting Beams Supporting roof & Ceiling Loads. Use: Hyspan LVL Location Span Spacing Living/Dining Living/Family Use Hyspan LVL Span Tables for Residential Building Calculate spans for strutting beams from floor plan Fill in span information Spacing is centre of rooms Centre Off Centre Determine table numbers from Hyspan LVL tables to select beam section sizes Fill in Data for Living/Dining Beam T x 63 Fill in Data for Living/Family Beam T 18 2/170x36

Part A can now be completed. On the plan supplied clearly mark all Hanging Beams, Underpurlins and any Strutting Beams & / or Special Strutting Beams supporting Roof and Ceiling loads.

Strutting Hyspan Strutting Beams Hanging Beams Under Purlins xx x xx x x x

Class Exercise 1 – Now Complete